KR20160034790A - Charger circuit including plurality of charging paths - Google Patents

Abstract

In the present invention, provided is a charging circuit which comprises: a first path regulator for generating first regulation current; a path switch for passing or blocking first charging current generated on the basis of the first regulation current; and a second path regulator for generating second regulation current. At least one of the first charging current that passes the path switch and the second charging current generated on the basis of the second regulation current is used to charge a battery. The second charging current is transmitted to the battery without passing through the path switch. According to the present invention, the power consumption of the path switch is reduced, and power efficiency and charging efficiency are increased.

Description

CHARGER CIRCUIT INCLUDING PLURALITY OF CHARGING PATHS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic circuits, and more particularly to a charging circuit used for charging a battery of a mobile device.

Recently, various kinds of electronic devices have been used. In particular, as process technology has developed, the size of electronic devices has been reduced, and portable electronic devices that can be carried by users have been widely used. The mobile electronic device is connected to the battery. The mobile electronic device performs its own functions by receiving power from the battery.

A mobile electronic device includes one or more electronic circuits. The mobile electronic device performs its own functions according to the operation of electronic circuits. By way of example, a mobile electronic device includes a charging circuit. The charging circuit operates to charge a battery connected to the mobile electronic device using power provided from an external power source. In addition, the charging circuit operates to provide the output voltage of the battery to other components of the mobile electronic device or to a peripheral device connected to the mobile electronic device.

To this end, the charging circuit converts a voltage (or current) supplied from an external power source or an output voltage (or an output current) of the battery. Furthermore, the charging circuit provides a path for transferring the voltage (or current). That is, the charging circuit is used to deliver the power required to operate the mobile electronic device.

In some cases, the charging circuit may include a Path Switch. The path switch can be placed on the path connecting the charging circuit and the battery. The path switch may be used to control the flow of charge current used to charge the battery. Furthermore, the path switch can be used to control the connection between the battery and the system output terminal. When a path switch is used, the charge rate can be managed and the charge circuit can operate stably.

However, when the voltage difference between both ends of the path switch is large and the intensity of the current flowing through the path switch is strong, the path switch consumes a lot of power. When the power consumption is unnecessarily increased, the life of the battery is shortened and the heat emission is increased. Therefore, a charging circuit is required to reduce the power consumed by the path switch.

A charging circuit is provided for reducing the power consumed by the path switch. The charging circuit according to an embodiment of the present invention may include a plurality of charging paths. In an embodiment of the present invention, one or more of the charging paths may include a path switch, while the remaining charge paths may not include a path switch.

A charging circuit according to an embodiment of the present invention includes a first path regulator configured to generate a first regulation current based on an input voltage and an input current, a first path regulator configured to generate a first charge current based on a first regulation current in response to a control signal, A path switch configured to pass or pass current therethrough, and a second path regulator configured to generate a second regulation current based on the input voltage and the input current. In this embodiment, at least one of the first charge current passed through the path switch and the second charge current generated based on the second regulation current is used to charge the battery, and the second charge current passes through the path switch It can be delivered to the battery without using it.

The charging circuit according to an embodiment of the present invention may further include a charge controller configured to generate a control signal and to control operations of the first path regulator, the path switch, and the second path regulator.

In an embodiment of the present invention, when the charge mode for charging the battery is operating: the path switch does not pass the first charge current, and a second charge current can be used to charge the battery.

In one embodiment of the invention, when the charge mode is in operation: the first path regulator generates a regulation voltage based on the input voltage and the input current, and the system voltage provided to the power management chip is generated based on the regulation voltage .

A charging circuit configured to generate a charging current used to charge a battery in accordance with another embodiment of the present invention includes a first charging path configured to transfer a first charging current generated based on an input voltage and an input current to a battery, And a second charging path configured to transfer a second charging current generated based on the input voltage and the input current to the battery. In this embodiment, the first charge path includes a path switch configured to pass or not pass the first charge current in response to the control signal, and the second charge path may not include the path switch.

The charging circuit according to another embodiment of the present invention generates a control signal, controls the operation of the path switch, and controls the intensity of the first charging current, the intensity of the second charging current, And a ratio of the intensity of the current.

In another embodiment of the present invention, when the charge mode for charging the battery is operating: the path switch passes the first charge current, at least one of the first charge current passing through the path switch, and the second charge current It can be used to charge the battery.

In another embodiment of the present invention, when the magnitude of the output voltage of the battery in the charging mode is less than the reference value: according to the control of the charging controller, the second charging current has a magnitude of zero, May be used to charge the battery. On the other hand, when the magnitude of the output voltage of the battery in the charging mode is equal to or greater than the reference value: the third charging current obtained by adding the first charging current and the second charging current, which have passed through the path switch, Lt; / RTI >

A charging circuit according to another embodiment of the present invention includes an input switch connected to an input terminal, one end of which is configured to receive an input voltage and an input current, an input switch connected to the other end of the input switch, A first path regulator configured to generate a first regulation voltage based on the first regulation voltage, a battery terminal configured to be connected to a system terminal configured to output a system voltage that is generated based on a first regulation voltage, A second path regulator connected to the other end of the input switch and configured to generate a second regulation voltage based on an input voltage and an input current provided through the input switch, The path switch, and the operations of the second path regulator And a charging controller configured to control the battery. In this embodiment, no path switch may be connected between the battery terminal and the output terminal, which is configured to output the second regulation voltage.

In another embodiment of the present invention, when the input terminal is floating: the path switch is turned on under the control of the charge controller, and the output voltage of the battery may be provided to the system terminal via the turn-on path switch.

In another embodiment of the present invention, when the charging controller senses the connection of the power source to the input terminal, a charging mode for charging the battery may be operated.

In another embodiment of the present invention, when the charging controller senses a connection of a peripheral to an input terminal, a boost mode for powering the peripheral device may operate.

In another embodiment of the present invention, when the boost mode is in operation: the path switch is turned off under the control of the charge controller, the second path regulator is supplied with the output voltage of the battery through the output terminal, To an increased voltage and provides the increased voltage to the other end of the input switch, and the input switch may be turned on under the control of the charge controller and provide an increased voltage to the input terminal.

According to an embodiment of the present invention, the power consumed by the path switch can be reduced. Therefore, the power efficiency and the charging efficiency can be improved. In addition, the heat from the charging circuit is reduced, and the battery of the mobile electronic device can supply power for a long time.

1 is a block diagram illustrating a power system of a mobile electronic device including a charging circuit chip in accordance with an embodiment of the present invention.
2 is a block diagram illustrating an embodiment of the charging circuit chip of FIG.
3 is a conceptual diagram for explaining a first charging path of the charging circuit chip of FIG.
4 is a conceptual diagram illustrating a second charging path of the charging circuit chip of FIG.
5 is a block diagram showing an embodiment of a regulator included in the charging circuit chip of FIG.
6 is a graph for explaining a process of controlling the intensity of a charging current according to an embodiment of the present invention.
7 is a table for explaining a charging mode according to an embodiment of the present invention.
8 is a conceptual diagram for explaining a case where the charging circuit chip of FIG. 2 operates in the second charging mode according to the embodiment of the present invention.
FIG. 9 is a graph illustrating a case where the charging circuit chip of FIG. 2 operates in the second charging mode according to the embodiment of the present invention.
10 is a graph illustrating a change of the charge mode according to the embodiment of the present invention.
11 is a conceptual diagram for explaining a case where the charging circuit chip of FIG. 2 operates in a boost mode according to an embodiment of the present invention.
12 is a conceptual diagram for explaining a case where the charging circuit chip of FIG. 2 operates in a battery power mode according to an embodiment of the present invention.
13 is a block diagram showing another embodiment of the charging circuit chip of FIG.
14 is a block diagram showing another embodiment of the charging circuit chip of FIG.
15 is a block diagram illustrating a mobile electronic device including a charging circuit chip in accordance with an embodiment of the present invention.

The foregoing features and the following detailed description are exemplary of the invention in order to facilitate a description and understanding of the invention. That is, the present invention is not limited to these embodiments, but may be embodied in other forms. The following embodiments are merely examples for the purpose of fully disclosing the present invention and are intended to convey the present invention to those skilled in the art. Thus, where there are several ways to implement the components of the present invention, it is necessary to make it clear that the implementation of the present invention is possible by any of these methods or any of the equivalents thereof.

It is to be understood that, in the context of this specification, when reference is made to a configuration including certain elements, or when it is mentioned that a process includes certain steps, other elements or other steps may be included. In other words, the terms used herein are for the purpose of describing specific embodiments only, and are not intended to limit the concept of the present invention. Further, the illustrative examples set forth to facilitate understanding of the invention include its complementary embodiments.

The terms used in this specification are meant to be understood by those of ordinary skill in the art to which this invention belongs. Commonly used terms should be construed in a manner consistent with the context of this specification. Also, terms used in the specification should not be construed as being excessively ideal or formal in nature unless the meaning is clearly defined. BRIEF DESCRIPTION OF THE DRAWINGS Fig.

1 is a block diagram illustrating a power system of a mobile electronic device including a charging circuit chip in accordance with an embodiment of the present invention. As an embodiment, the power system 1000 includes a connector 1110, a wireless power manager 1120, a charger circuit chip 1200, a battery 1300, and a main power manager Power Manager 1400). However, the power system 1000 may further include components not shown in FIG. Alternatively, the power system 1000 may not include one or more of the components shown in FIG.

The power system 1000 may be used to power a mobile electronic device. The power system 1000 can receive power from a power source that is wired via a transformer such as an adapter. Alternatively, the power system 1000 may be powered from a power source connected wirelessly by resonance of an inductor. The power system 1000 can convert the supplied power appropriately. The power system 1000 can supply the converted power to the components of the mobile electronic device.

By way of example, the connector 1110 may be connected to a conversion device, such as an adapter, via a wired input terminal WIN. The connector 1110 may be powered from a power source that is wired. The connector 1110 can appropriately convert the supplied power and provide the converted power to the charging circuit chip 1200.

By way of example, the wireless power manager 1120 may be coupled to an input inductor (LIN). The input inductor LIN may resonate with the transmitting inductor (not shown) of the wireless power transmitter. The wireless power manager 1120 may be powered from a power source that is connected wirelessly by resonance between the input inductor LIN and the transmitting inductor. The wireless power manager 1120 can appropriately convert the supplied power and provide the converted power to the charging circuit chip 1200.

The charging circuit chip 1200 may include a charging circuit according to an embodiment of the present invention. A charging circuit according to an embodiment of the present invention may be included in a chip such as the charging circuit chip 1200. However, the charging circuit according to the embodiment of the present invention may be included in the apparatus or implemented in the system. In the following description, it is assumed that the charging circuit according to the embodiment of the present invention is implemented as a chip, but the present invention is not limited by this assumption.

The charging circuit chip 1200 may operate in one of a battery power mode, a charging mode, and a boost mode. For example, if no power is supplied through the connector 1110 and the wireless power manager 1120, the battery power mode may operate. In the battery power mode, the charging circuit chip 1200 can receive power from the battery 1300. The charging circuit chip 1200 can appropriately convert the power provided from the battery 1300 and provide the converted power to the main power manager 1400. [

The charging circuit chip 1200 may be powered by at least one of the connector 1110 and the wireless power manager 1120. For example, if power is provided through at least one of the connector 1110 and the wireless power manager 1120, the charging mode may operate. In the charging mode, the charging circuit chip 1200 can appropriately convert the power provided through the connector 1110 or the wireless power manager 1120. [ The charging circuit chip 1200 can charge the battery 1300 using the converted power. Further, the charging circuit chip 1200 can provide the converted power to the main power manager 1400.

For example, a Peripheral Device (e.g., a keyboard, a speaker, etc.) used for assisting in the use of a mobile electronic device may be connected to the charging circuit chip 1200 via a connector 1110. The charging circuit chip 1200 may operate in a boost mode to power the peripheral device. In the boost mode, the charging circuit chip 1200 can boost the output voltage of the battery 1300 and provide an increased voltage to the peripheral device. If necessary, in the boost mode, the charging circuit chip 1200 can appropriately convert the power supplied from the battery 1300 and provide the converted power to the main power manager 1400.

The configuration and operation of the charging circuit chip 1200 according to the embodiment of the present invention will be described in more detail with reference to FIGS. The charging mode of the charging circuit chip 1200 will be described with reference to Figs. 7 to 10, the boost mode will be described with reference to Fig. 11, and the battery power mode will be described with reference to Fig.

The main power manager 1400 can be supplied with power from the charging circuit chip 1200. For example, the main power manager 1400 may convert the voltage provided from the charging circuit chip 1200 to a stable voltage. The main power manager 1400 may provide a stable voltage to the other components of the mobile electronic device. By way of example, each of the processor 1500, the input / output interface 1510, the memory 1520, the storage 1530, the display 1540, and the communication circuit block 1550 included in the mobile electronic device are connected to the main power manager 1400, Lt; RTI ID = 0.0 > provided < / RTI >

By way of example, each of the wireless power manager 1120, the charging circuit chip 1200, and the main power manager 1400 may be implemented as an integrated circuit chip. Each of the wireless power manager 1120, the charging circuit chip 1200, and the main power manager 1400 may be implemented using various types of semiconductor packages. For example, each of the wireless power manager 1120, the charging circuit chip 1200, and the main power manager 1400 may be a package on package (PoP), ball grid arrays (BGAs), chip scale packages (CSPs) A die in wafer form, a chip on board (COB), a ceramic dual in-line package (CERDIP), a metric quad flat pack (MQFP) (Thin Quad Flat Pack (TQFP), Small Outline Integrated Circuit (SOIC), Shrink Small Outline Package (SSOP), Thin Small Outline Package (TSOP), System In Package (SIP), Multi Chip Package (MCP) level Fabricated Package, and WSP (Wafer-Level Processed Stack Package).

2 is a block diagram illustrating an embodiment of the charging circuit chip of FIG. The charging circuit chip 100 may include a first path regulator 110, a path switch (SP), and a second path regulator 130. The charging circuit chip 100 may further include an input switch (SI) and a charge controller (150).

By way of example, the charging circuit chip 1200 of FIG. 1 may include the charging circuit chip 100 of FIG. However, the configuration of the charging circuit chip 100 shown in FIG. 2 is merely an example for facilitating understanding of the present invention, and is not intended to limit the present invention. The charging circuit chip 100 may further include other components not shown in FIG. Alternatively, the charging circuit chip 100 may not include one or more of the components shown in FIG.

The charging circuit chip 100 may be provided with at least one of the input voltage Vin and the input current Iin. As an example, the input voltage Vin and the input current Iin may be provided from one or more of a plurality of power sources. By way of example, input voltage Vin and input current Iin may be provided from at least one of connector 1110 and wireless charge manager 1120 in FIG. The charging circuit chip 100 may be supplied with the input voltage Vin and the input current Iin through the input terminal IN.

One end of the input switch SI may be connected to the input terminal IN. The input switch SI may operate in response to the control of the charge controller 150. The input switch SI may or may not pass the input current Iin provided through the input terminal IN under the control of the charge controller 150. [ The input current Iin having passed through the input voltage Vin and the input switch SI may be provided to the first path regulator 110 and the second path regulator 120. [

In FIG. 2, the input switch SI is shown to be a PMOS (P-channel Metal Oxide Semiconductor) transistor. However, this is only an example for facilitating understanding of the present invention, and is not intended to limit the present invention. The input switch SI may include any configuration for controlling the transfer of the input voltage Vin and the flow of the input current Iin. As an example, the input switch SI may be implemented in other types, such as an NMOS (N-channel MOS) transistor, a switching element, a gate circuit, a buffer circuit,

The first path regulator 110 may be connected to the other end of the input switch SI. The first path regulator 110 can be supplied with the input voltage Vin and the input current Iin through the input switch SI. The first path regulator 110 may generate the first regulation voltage Vr1 and the first regulation current Ir1 based on the input voltage Vin and the input current Iin. For example, the first path regulator 110 may operate under the control of the charge controller 150. The first regulation voltage Vr1 and the first regulation current Ir1 may be output through the first output terminal R1.

In an embodiment, the first path regulator 110 may include a buck converter. However, the present invention is not limited by this embodiment. The first path regulator 110 may include other types of switching regulators such as a boost converter, a buck-boost converter, and the like. In addition, the first path regulator 110 may include a linear regulator such as a low dropout regulator. The first path regulator 110 may be designed in various forms as needed.

The first inductor LT1 may be connected to the first path regulator 110 through the first output terminal R1 to generate the first regulation voltage Vr1 and the first regulation current Ir1. The first regulation voltage Vr1 and the first regulation current Ir1 may be provided to the system terminal SYS through the first inductor LT1.

The first inductor LT1 may be disposed outside the charging circuit chip 100 (i.e., on an off-chip region) as shown in FIG. Alternatively, the first inductor LT1 may be disposed inside the charging circuit chip 100, unlike the one shown in Fig. As an example, the first inductor LT1 may be a discrete inductive element, but the invention is not limited by this example. The first inductor LT1 may include a simulated inductor including semiconductor elements. The first inductor LT1 can be designed in various forms as needed.

The system terminal SYS can output the system voltage Vsys. The system voltage Vsys may be generated based on the first regulation voltage Vr1. The system voltage Vsys may be provided to other components of the mobile electronic device (e.g., the main power manager 1400 of FIG. 1). Furthermore, the first charge current I1 may be generated based on the first regulation current Ir1. The first charge current I1 may be provided to the path switch SP through the system terminal SYS.

One end of the path switch SP may be connected to the system terminal SYS. The other end of the path switch SP may be connected to a battery terminal BAT connected to the battery 1300. The path switch SP can operate in response to a control signal. The control signal may be generated by the charge controller 150. The path switch SP may or may not pass the first charge current I1 in response to the control signal. The first charge current I1 that has passed through the path switch SP may be provided to the battery terminal BAT.

In Fig. 2, the path switch SP is shown to be a PMOS transistor. However, this is only an example for facilitating understanding of the present invention, and is not intended to limit the present invention. The path switch SP may include any configuration for controlling the flow of the charge current I1. By way of example, the path switch SP may be implemented in other types, such as NMOS transistors, switching elements, gate circuits, buffer circuits, and the like. Alternatively, the path switch SP may be implemented as a separate integrated circuit.

The second path regulator 130 may be connected to the other end of the input switch SI. The second path regulator 130 can be supplied with the input voltage Vin and the input current Iin through the input switch SI. The second path regulator 130 can generate the second regulation voltage Vr2 and the second regulation current Ir2 based on the input voltage Vin and the input current Iin. By way of example, the second path regulator 130 may operate under the control of the charge controller 150. The second regulation voltage Vr2 and the second regulation current Ir2 may be output through the second output terminal R2.

As an example, the second path regulator 130 may include a buck converter. However, the present invention is not limited by this embodiment. The second path regulator 130 may include other types of switching regulators such as a boost converter, a buck-boost converter, and the like. In addition, the second path regulator 130 may include a linear regulator, such as a low dropout regulator. The second path regulator 130 can be designed in various forms as needed.

The second inductor LT2 may be connected to the second path regulator 130 through the second output terminal R2 to generate the second regulation voltage Vr2 and the second regulation current Ir2. The second inductor LT2 may be disposed outside the charging circuit chip 100 (i.e., on the off-chip region) as shown in FIG. Alternatively, the second inductor LT2 may be disposed inside the charging circuit chip 100, unlike the one shown in Fig. By way of example, the second inductor LT2 may be a separate inductive element, but the invention is not limited by this example. The second inductor LT2 may include a simulated inductor including semiconductor elements. The second inductor LT2 can be designed in various forms as needed.

And the second charge current I2 may be generated based on the second regulation current Ir2. The second charge current I2 may be provided to the battery terminal BAT. The battery terminal BAT may be provided with the first charge current I1 and the second charge current I2. Therefore, the charging current Ic obtained by adding the first charging current I1 and the second charging current I2 can be provided to the battery 1300. [ The charging current Ic may be used to charge the battery 1300. [ That is, at least one of the first charge current I1 and the second charge current I2 that has passed through the path switch SP can be used to charge the battery 1300. [

As described in FIG. 2, the first charge current I1 may be provided to the battery 1300 along a "first charging path" including the path switch SP. Further, the second charge current I2 may be provided to the battery 1300 along a "second charge path" that does not include the path switch SP. Therefore, the second charge current I2 can be supplied to the battery 1300 without passing through the path switch SP. The first charging path and the second charging path are described in further detail with reference to FIGS. 3 and 4. FIG.

The charging controller 150 may control the overall operations of the charging circuit chip 100. For example, the charge controller 150 may control the operation of the input switch SI. The charge controller 150 can control the operation of the path switch SP by generating a control signal. The charge controller 150 can control the intensity of the first charge current I1 by controlling the operation of the first path regulator 110. [ The charge controller 150 can control the intensity of the second charge current I2 by controlling the operation of the second path regulator 130. [ Furthermore, the charge controller 150 can control the ratio of the intensity of the first charge current I1 to the intensity of the second charge current I2.

However, the present invention is not limited by the above examples. The charge controller 150 may further perform other operations not mentioned in the above example. Alternatively, the charge controller 150 may not perform one or more of the operations mentioned in the above example.

Further, in FIG. 2, the charge controller 150 is shown as being a single component. However, the charging controller 150 may be provided independently for each of the components included in the charging circuit chip 100. As an example, the charge controller for controlling the operation of the path switch SP may be provided separately from the charge controller for controlling the operation of the first path regulator 110. The configuration of the charging circuit chip 100 shown in FIG. 2 is only an example for facilitating understanding of the present invention, and is not intended to limit the present invention.

3 is a conceptual diagram for explaining a first charging path of the charging circuit chip of FIG. In an embodiment, the first charge path P1 may include an input switch SI, a first path regulator 110, a first inductor LT1, and a path switch SP.

The first charge path P1 can transfer the first charge current I1 to the battery 1300. [ As described with reference to FIG. 2, the first charge current I1 may be generated based on the input voltage Vin and the input current Iin. The first charge path P1 may include a first path regulator 110 to generate a first charge current I1. The charge controller 150 may control the operations of the input switch SI, the first path regulator 110, and the path switch SP to transfer the first charge current I1 to the battery 1300 .

Furthermore, the first charging path P1 can transfer the system voltage Vsys to the system terminal SYS. As described with reference to FIG. 2, the system voltage Vsys may be generated based on the input voltage Vin and the input current Iin. The system voltage Vsys may be provided to other components of the mobile electronic device (e.g., the main power manager 1400 of FIG. 1).

2 and 3, the first charge path P1 is shown to include one regulator (i.e., the first path regulator 110). However, the first charge path P1 may include one or more regulators as needed. The regulators included in the first charge path P1 may be connected in series or in parallel.

As described above, the first charge path P1 may include a path switch SP. By way of example, the path switch SP may or may not pass the first charge current I1 in response to a control signal generated by the charge controller 150. [ The path switch SP can control the flow of charge current used to charge the battery 1300. [ The path switch SP can control the connection between the battery 1300 and the system terminal SYS. When the path switch is used, the charging speed can be managed and the charging circuit chip 100 (see FIG. 2) can operate stably.

However, when the voltage difference between the both ends of the path switch SP is large and the intensity of the first charge current I1 flowing through the path switch SP is high, the path switch SP can consume a large amount of power. For example, if the output voltage of the battery 1300 is significantly low (i.e., when the battery 1300 is almost discharged) while the system terminal SYS is outputting the stable system voltage Vsys, The voltage difference between both ends can be large. Here, when the first charge current I1 having a strong intensity for charging the battery 1300 passes through the path switch SP, the path switch SP can consume a large amount of power.

When the power consumption is unnecessarily increased, the life of the battery 1300 is shortened and the heat generated by the charging circuit chip 100 is increased. Therefore, it is necessary to reduce the power consumed by the path switch SP. However, when the path switch SP is removed from the first charging path P1, it is difficult to stably operate the charging circuit chip 100. [ Therefore, a separate charge path not including the path switch SP is required. The second charging path will be described with reference to Fig.

4 is a conceptual diagram illustrating a second charging path of the charging circuit chip of FIG. As an embodiment, the second charging path P2 may include an input switch SI, a second path regulator 130, and a second inductor LT2. The second charging path P2 may not include the path switch SP shown in Figs.

And the second charging path P2 can transfer the second charging current I2 to the battery 1300. [ As described in Fig. 2, the second charge current I2 may be generated based on the input voltage Vin and the input current Iin. In order to generate the second charge current I2, the second charge path P2 may include a second path regulator 130. [ The charge controller 150 may control the operations of the input switch SI and the second path regulator 130 to transfer the second charge current I2 to the battery 1300. [

2 and 4, the second charge path P2 is shown as including one regulator (i.e., the second path regulator 130). However, the second charging path P2 may include one or more regulators as needed. The regulators included in the second charging path P2 may be connected in series or in parallel. Regulators connected in parallel are described with reference to FIG.

As described above, the second charging path P2 may not include the path switch SP. Specifically, the path switch SP may not be connected between the second output terminal R2 and the battery terminal BAT in FIG. The second charging path P2 may not be connected to the system terminal SYS of Fig. Therefore, the second charging path P2 may not include the path switch SP.

When the second charging path P2 is used to charge the battery 1300, the power consumed by the path switch SP included in the first charging path P1 of Fig. 3 can be reduced. Therefore, the power efficiency and the charging efficiency can be improved. In addition, the heat generated by the charging circuit chip 100 (see FIG. 2) is reduced, and the battery 1300 can supply electric power for a long time.

5 is a block diagram showing an embodiment of a regulator included in the charging circuit chip of FIG. By way of example, the first path regulator 110 of FIG. 2 may include the regulator 110a of FIG.

As an example, regulator 110a may include a buck converter. In this embodiment, the regulator 110a may include a first transistor T1, a second transistor T2, and a switching driver 112. In this embodiment, Regulator 110a may be provided with at least one of input voltage Vin and input current Iin.

The switching driver 112 may turn on or turn off the first transistor T1 and the second transistor T2. Under the control of the switching driver 112, the first transistor T1 and the second transistor T2 may be alternately turned on. Accordingly, the regulator 110a can generate the first regulation voltage Vr1 and the first regulation current Ir1 based on the input voltage Vin and the input current Iin.

For example, in order to control the first transistor T1 and the second transistor T2, the switching driver 112 may control the intensity of the first regulation current Ir1 and the amplitude of the first regulation voltage Vr1 At least one can be referenced. To this end, the regulator 110a may further include other components such as a current sensor, a comparator, and the like. Detailed description of the configuration and operation of the buck converter is omitted.

The first inductor LT1 may be connected to the regulator 110a through the first output terminal R1 to generate the first regulation voltage Vr1 and the first regulation current Ir1 . The system terminal SYS can output the system voltage Vsys generated based on the first regulation voltage Vrl. Furthermore, a first charge current I1 generated based on the first regulation current Ir1 may be provided to the system terminal SYS.

However, regulator 110a may include other types of switching regulators such as boost converters, buck-boost converters, and the like. In addition, regulator 110a may include a linear regulator, such as a low dropout regulator. The regulator 110a may be designed in various forms as needed.

Further, the second path regulator 130 of FIG. 2 may include the same or similar configuration as the regulator 110a. However, the output of the second path regulator 130 may be provided to the battery terminal BAT of FIG. 2 through the second inductor LT2 of FIG. The detailed description of the second path regulator 130 is omitted for convenience of explanation.

For example, the regulator 110a may operate in a CV (Constant Voltage) mode or a CC (Constant Current) mode. The regulator 110a may generate a voltage having a constant (or substantially constant) magnitude in the CV mode (e.g., the first regulation voltage Vr1). The regulator 110a can appropriately control the first transistor T1 and the second transistor T2 using the switching driver 112 to generate a voltage having a predetermined magnitude. Alternatively, the regulator 110a may regulate the first regulation voltage Vr1 having a constant magnitude using a separately provided voltage generation circuit.

Further, the regulator 110a may generate a current having a constant (or substantially constant) intensity in the CC mode (e.g., the first regulation current Ir1). The regulator 110a can appropriately control the first transistor T1 and the second transistor T2 using the switching driver 112 to generate a current having a constant intensity.

6 is a graph for explaining a process of controlling the intensity of a charging current according to an embodiment of the present invention. In particular, FIG. 6 shows the process of controlling the intensity of the first charge current (I1, see FIG. 2). Here, it is assumed that the first path regulator 110 of FIG. 2 includes a regulator 110a (i.e., a buck converter) of FIG. However, as mentioned above, the present invention is not limited by this assumption.

6), the first transistor T1 (see FIG. 5) is turned on and the second transistor T1 is turned on in the time intervals between 0 and t1, between t2 and t3, and between t4 and t5, (T2, see FIG. 5) may be turned off. When the first transistor T1 is turned on and the second transistor T2 is turned off, the intensity of the first charge current I1 can be subtracted based on the input voltage Vin (see FIG. 2).

On the other hand, at time intervals between t1 and t2, between t3 and t4, and between t5 and t6, the second transistor T2 may be turned on and the first transistor T1 may be turned off. When the first transistor T1 is turned off and the second transistor T2 is turned on, the intensity of the first charge current I1 may be weakened based on the ground voltage.

As described in FIG. 5, the first transistor T1 and the second transistor T2 may be alternately turned on. By alternately turning on the first transistor T1 and the second transistor T2, the first regulation current Ir1 (see FIG. 2) can be generated. Furthermore, the first charge current I1 can be generated based on the first regulation current Ir1.

In the first case (Case 1), the case where the intensity of the first charge current I1 is counted will be described with reference to the graph shown at the upper right of FIG. When the length of the time period for turning on the first transistor T1 is long and the length of the time period for turning on the second transistor T2 is shortened, the intensity of the first charge current I1 gradually increases . When the first charge current I1 has a desired intensity, the length of the time period for turning on the first transistor T1 is equal to the length of the time period for turning on the second transistor T2. According to this process, the intensity of the first charge current I1 can be reduced.

In the second case (Case 2), the case where the intensity of the first charge current I1 becomes weak will be described with reference to the graph shown at the lower right end of FIG. When the length of the time period for turning on the first transistor T1 is shortened and the length of the time period for turning on the second transistor T2 is long, the intensity of the first charge current I1 is gradually decreased It becomes. When the first charge current I1 has a desired intensity, the length of the time period for turning on the second transistor T2 is equal to the length of the time period for turning on the first transistor T1. According to this process, the intensity of the first charge current I1 can be weakened.

By making the length of the time interval for turning on the first transistor T1 equal to the length of the time interval for turning on the second transistor T2, the first charge current I1 is constant (or substantially ). ≪ / RTI > The length of the time interval for turning on the first transistor T1 and the length of the time interval for turning on the second transistor T2 are adjusted so that the intensity of the first charge current I1 can be adjusted ) have.

The process of controlling the intensity of the first charge current I1 has been described with reference to FIG. The second charge current I2 (see FIG. 2) may also be controlled according to the same or similar process as described with reference to FIG. The redundant description of the second charging current I2 is omitted for convenience of explanation.

As described above, the charging current Ic (see FIG. 2) obtained by adding the first charging current I1 and the second charging current I2 may be provided to the battery 1300 (see FIG. 2). When a switching regulator is used as the first path regulator 110 (see FIG. 2) and the second path regulator 130 (see FIG. 2), the first charge current I1 and the second charge current I2 (I2) may each include a ripple component.

As an embodiment, the phase of the first charge current I1 may be controlled to be different from the phase of the second charge current I2 (i.e., the first charge current I1 may be controlled by the second charge current I2 and the & Interleave "). In this embodiment, the ripple component included in the charge current Ic can be reduced. Particularly, when the difference between the phase of the first charge current I1 and the phase of the second charge current I2 is 180, the ripple component included in the charge current Ic can be minimized.

The ratio of the intensity of the first charge current I1 to the intensity of the second charge current I2 is controlled by controlling at least one of the intensity of the first charge current I1 and the intensity of the second charge current I2 . As an example, to generate a charging current Ic of 1A, a first charging current I1 of 0.5 A and a second charging current I2 of 0.5 A may be generated. Alternatively, a first charge current I1 of 0.2 A and a second charge current I2 of 0.8 A may be generated. In some cases, only a second charge current I2 of 1A is produced, and the first charge current I1 may have an intensity of zero.

In the embodiment of the present invention, as the intensity of the first charge current I1 is weak, the power consumed by the path switch SP (see FIG. 2) can be reduced. This is because the power consumed by the path switch SP is obtained by multiplying the voltage difference between the path switch SP and the intensity value of the current flowing through the path switch SP. However, the intensity of the first charge current I1 and the intensity of the second charge current I2 may be the same as the operation mode of the charge circuit chip 100 (see FIG. 2), the operation stability of the charge circuit chip 100, Can be controlled by considering various factors.

7 is a table for explaining a charging mode according to an embodiment of the present invention. As described above, the charging circuit chip 100 of FIG. 2 may operate in a charging mode. For example, if the charging controller 150 (see FIG. 2) senses the connection of the power source to the input terminal IN, the charging mode may operate.

In the charging mode, the charging circuit chip 100 can appropriately convert the supplied power. The charging circuit chip 100 can charge the battery 1300 (see FIG. 2) using the converted power. As an example, the charging circuit chip 100 may operate in one of three charging modes.

First, referring to FIG. 3 together, a first charging mode will be described. In the first charging mode, the charging circuit chip 100 can charge the battery 1300 only through the first charging path P1. In the first charging mode, the charging current Ic (see FIG. 2) provided to the battery 1300 may be the same as the first charging current I1 that has passed through the path switch SP. In the first charging mode, the charging circuit chip 100 may provide the system voltage Vsys to the system terminal SYS. As an example, in the first charge mode, the charge controller 150 may control the second path regulator 130 to prevent the second path regulator 130 (see FIG. 2) from operating.

Next, referring to FIG. 4 together, a second charging mode is described. In the second charging mode, the charging circuit chip 100 can charge the battery 1300 only through the second charging path P2. In the second charging mode, the charging current Ic provided to the battery 1300 may be equal to the second charging current I2. The charging circuit chip 100 operating in the second charging mode is described in more detail with reference to Figs. 8 and 9. Fig.

Finally, referring to FIG. 2 together, a third charging mode is described. In the third charging mode, the charging circuit chip 100 can charge the battery 1300 through both the first charging path P1 and the second charging path P2. In the third charging mode, the charging current Ic provided to the battery 1300 can be obtained by adding the first charging current I1 and the second charging current I2. In the third charge mode, the ratio of the intensity of the first charge current I1 to the intensity of the second charge current I2 can be controlled under the control of the charge controller 150. [

As an example, the charging circuit chip 100 may be designed to operate only in one of the first to third charging modes. Alternatively, the charging circuit chip 100 may be designed to operate in one of the first to third charging modes, depending on the operating environment. For example, the charging controller 150 may change the charging mode of the charging circuit chip 100 according to the operating environment. The change of the charging mode will be described in more detail with reference to FIG.

8 is a conceptual diagram for explaining a case where the charging circuit chip of FIG. 2 operates in the second charging mode according to the embodiment of the present invention. FIG. 9 is a graph illustrating a case where the charging circuit chip of FIG. 2 operates in the second charging mode according to the embodiment of the present invention.

As described in Fig. 7, in the second charging mode, the charging circuit chip 100 (see Fig. 2) can charge the battery 1300 only through the second charging path P2 (see Fig. 4). As shown in Fig. 8, the second charging path P2, which is connected from the input switch SI to the second path regulator 130, can be used for charging the battery 1300. [ Along the second charging path P2, the second charging current I2 can be generated based on the input voltage Vin and the input current Iin.

In the second charging mode, the first charging path P1 (see Fig. 3) leading from the input switch SI to the first path regulator 110 may not be used to charge the battery 1300. [ Under the control of the charge controller 150, the path switch SP can be turned off. Therefore, the path switch SP may not pass the first charge current I1 (see FIG. 2). Further, the charging current Ic provided to the battery 1300 may be equal to the second charging current I2. That is, the second charge current I2 may be used to charge the battery 1300. [

In the second charging mode, the first charging path P1 may be used to supply system power to other components of the mobile electronic device (e.g., the main power manager 1400 of FIG. 1). The first path regulator 110 may generate the first regulation voltage Vr1 based on the input voltage Vin and the input current Iin. Based on the first regulation voltage Vr1, the system voltage Vsys provided to the other components of the mobile electronic device can be generated.

8 and 9 together, an exemplary operation of the second charging mode will be described. The following description is provided to aid understanding of the present invention and is not to be construed as limiting the present invention.

9 corresponds to a case where the output voltage of the battery 1300 is extremely low (i.e., when the battery 1300 is almost discharged). It is assumed that charging starts after the magnitude of the output voltage of the battery 1300 has decreased to the value of 'V1'. When the battery 1300 is almost discharged, a charging current Ic having a weak intensity Ia (for example, 0.1 A) is provided to the battery 1300 to perform stable charging.

the first path regulator 110 operates in the CV mode in order to output the stable system voltage Vsys in the period (a). The magnitude of the system voltage (Vsys) maintains a value of 'V2'. Further, in order to provide the stable charge current Ic to the battery 1300, the second path regulator 130 operates in the CC mode. The intensity of the charging current Ic maintains the value of 'Ia'.

As the battery 1300 is charged based on the charging current Ic, at time t1, the magnitude of the output voltage of the battery 1300 reaches the reference value V3. (b), a charging current Ic having a strong intensity Ib (e.g., 2A) is provided to the battery 1300 in order to charge the battery 1300 quickly. To this end, the second path regulator 130 operates in the CC mode. The first path regulator 110 operates in the CV mode, and the stable system voltage Vsys is output.

As the battery 1300 is charged based on the charging current Ic, at time t2, the magnitude of the output voltage of the battery 1300 reaches the magnitude of the system voltage Vsys. (c), the second path regulator 130 operates in the CC mode, and a stable charge current Ic is supplied to the battery 1300. [ As the magnitude of the output voltage of the battery 1300 increases, the magnitude of the system voltage Vsys also increases. To continue outputting the system voltage Vsys, the first path regulator 110 operates in the CC mode.

As the battery 1300 is charged based on the charging current Ic, at time t3, the magnitude of the output voltage of the battery 1300 reaches the threshold value V4. (d), in order to fully charge the battery 1300, the intensity of the charging current Ic gradually decreases. This is because the battery 1300 is not fully charged if the intensity of the charging current Ic is strong due to the resistive component of the input terminal of the battery. To continue generating the charge current Ic, the second path regulator 130 operates in CV mode. Further, in order to continuously output the system voltage Vsys, the first path regulator 110 operates in the CC mode.

As the battery 1300 is charged based on the charging current Ic, at time t4, the magnitude of the output voltage of the battery 1300 reaches the maximum value V5. That is, at time t4, the battery 1300 is fully charged. In the period (e), the charging of the battery 1300 is ended. The second path regulator 130 stops operating, and the charge current Ic has an intensity of zero. The first path regulator 130 operates in the CV mode, and the stable system voltage Vsys is output.

8 and 9, the path switch SP may be turned off in the second charge mode. Therefore, the path switch SP may consume almost no power in the second charging mode. As a result, the power efficiency and charging efficiency are improved, and the heat generated by the charging circuit chip 100 can be reduced.

10 is a graph illustrating a change of the charge mode according to the embodiment of the present invention. Referring to Figures 2 and 10 together, an exemplary operation of the charging circuit chip 100 is described. The following description is provided to aid understanding of the present invention and is not to be construed as limiting the present invention.

The period (a) shown in FIG. 10 corresponds to a case where the output voltage of the battery 1300 is considerably low (that is, when the battery 1300 is almost discharged). It is assumed that charging starts after the magnitude of the output voltage of the battery 1300 has decreased to the value of 'V1'. When the battery 1300 is almost discharged, a charging current Ic having a weak intensity Ia (for example, 0.1 A) is provided to the battery 1300 to perform stable charging.

(a), the charging circuit chip 100 operates in the first charging mode. The path switch SP is turned on under the control of the charge controller 150, and passes the first charge current I1. (a), the charging current Ic may have a weak intensity Ia. Therefore, even if the first charge current I1 passes through the path switch SP and is provided to the battery 1300, the path switch SP may not consume much power.

the second path regulator 130 does not operate and the second charge current I2 has an intensity of zero according to the control of the charge controller 150 in the period (a). That is, only the first charge current I1 is used to charge the battery. the charging circuit chip 100 supplies the first charging current I1 to the battery 1300 through only the first charging path P1 (see FIG. 3), and at the same time, through the system terminal SYS And outputs the system voltage Vsys.

As the battery 1300 is charged based on the charging current Ic, at time t1, the magnitude of the output voltage of the battery 1300 reaches the reference value V3. (b), a charging current Ic having a strong intensity Ib (e.g., 2A) is provided to the battery 1300 in order to charge the battery 1300 quickly. However, when the first charge current I1 having a strong intensity Ib is provided to the battery 1300 through the path switch SP, the path switch SP may consume a large amount of power.

Therefore, in the period (b), the charging circuit chip 100 operates in the third charging mode. In the third charging mode, the charging circuit chip 100 charges the battery 1300 through both the first charging path P1 and the second charging path P2 (see Fig. 4). Since the charging current Ic is obtained by adding the first charging current I1 and the second charging current I2, when the intensity of the second charging current I2 is increased, the intensity of the first charging current I1 is It weakens. As a result, the power consumed by the path switch SP can be reduced.

Alternatively, in the period (b), the charging circuit chip 100 operates in the second charging mode. In the second charging mode, the charging circuit chip 100 can charge the battery 1300 only through the second charging path P2. In the second charging mode, since the first charging current I1 has an intensity of zero, the path switch SP may consume almost no power.

In the period (c) and the period (d) after time t2, the charging circuit chip 100 continues to operate in the third charging mode (or the second charging mode). Further, when charging of the battery 1300 is completed at time t4, the charging mode is ended.

As shown in Fig. 10, the path switch SP may not pass the first charge current I1 or may pass the first charge current I1 having a strength lower than the value of Ib. Therefore, the power consumed by the path switch SP can be reduced. As a result, the power efficiency and charging efficiency are improved, and the heat from the charging circuit chip 100 can be reduced.

11 is a conceptual diagram for explaining a case where the charging circuit chip of FIG. 2 operates in the boost mode according to the embodiment of the present invention.

By way of example, a peripheral device 10 (e.g., keyboard, speaker, etc.) used to assist in the use of a mobile electronic device may be connected to the charging circuit chip 100 (see FIG. 2) via a connector 1110 have. For example, if the charging controller 150 senses the connection of the peripheral device 10 to the input terminal IN, the boost mode may operate. The charging circuit chip 100 may operate in a boost mode to power the peripheral device 10. [

The charging circuit chip 100 can supply power to the peripheral device 10 via the boost path PB. The boost path PB may include a second inductor LT2, a second path regulator 130, and an input switch SI. The direction along the boost path PB may be reverse to the direction along the second charge path P2 (see Fig. 4).

The output voltage of the battery 1300 may increase through the second inductor LT2 and the second path regulator 130. [ The second path regulator 130 can receive the output voltage of the battery 1300 through the second output terminal R2. The second path regulator 130 may convert the output voltage of the battery 1300 to a boosted voltage Vb. The second path regulator 130 may provide the increased voltage Vb to the input switch IN.

The input switch IN may be turned on under the control of the charge controller 150. [ The input switch IN may provide the increased voltage Vb provided from the second path regulator 130 to the input terminal IN. The increased voltage Vb may be provided to the peripheral device 10 via the input terminal SI. That is, when the boost mode is in operation, the charging circuit chip 100 may increase the output voltage of the battery 1300 and provide the increased voltage Vb to the peripheral device 10.

As an embodiment, in the boost mode, the path switch SP may be turned off under the control of the charge controller 150. [ In order to supply power to the peripheral device, the first charging path P1 (see Fig. 3) may not be used. In this embodiment, the path switch SP may consume almost no power. As a result, the power efficiency is improved, and the battery can supply power for a long time. In addition, the heat generated by the charging circuit chip 100 can be reduced.

The present invention is not limited by the above embodiments. 11, in the boost mode, the path switch SP may be turned on under the control of the charge controller 150. [ If necessary, the output voltage of the battery 1300 may be used to output the system voltage Vsys (see FIG. 2) through the system terminal SYS. In this embodiment, the output voltage of the battery 1300 may be provided to the system terminal SYS through the turn-on path switch SP. However, the increased voltage Vb may be transmitted through the boost path PB. To this end, the charge controller 150 may appropriately control the first path regulator 110 so that the first path regulator 110 does not operate. Therefore, the power consumed by the path switch SP can be minimized.

11, in the boost mode, the path switch SP can be turned on under the control of the charge controller 150. [ In this embodiment, the output voltage of the battery 1300 may be provided to the first output terminal R1 via the turn-on path switch SP. The first path regulator 110 can receive the output voltage of the battery 1300 through the first output terminal Rl. The first path regulator 110 may convert the output voltage of the battery 1300 to an increased voltage. In this embodiment, the increased voltage Vb may be generated by both the first path regulator 110 and the second path regulator 130. According to this embodiment, the increased voltage Vb can have a larger magnitude.

12 is a conceptual diagram for explaining a case where the charging circuit chip of FIG. 2 operates in a battery power mode according to an embodiment of the present invention.

When the input terminal IN is not connected to the power source and the peripheral device, the input terminal IN may float. When the input terminal IN floats, the battery power mode can be operated. In the battery power mode, the charging circuit chip 100 (see FIG. 2) can output the system voltage Vsys using the output voltage of the battery 1300.

The path switch SP may be turned on under the control of the charge controller 150. [ Therefore, the output voltage of the battery 1300 can be supplied to the system terminal SYS through the turn-on path switch SP. The output voltage of the battery 1300 provided at the system terminal SYS may be output as the system voltage Vsys.

13 is a block diagram showing another embodiment of the charging circuit chip of FIG. The charging circuit chip 200 may include a first path regulator 210, a path switch SP, a second path regulator 230, and a third path regulator 240. The charging circuit chip 200 may further include an input switch SI and a charging controller 250. By way of example, the charging circuit chip 1200 of FIG. 1 may include the charging circuit chip 200 of FIG.

The configurations and functions of the input switch SI, the first path regulator 210, the path switch SP and the charge controller 250 are the same as those of the input switch SI, the first path regulator 110, The switch SP, and the charge controller 150, respectively. The configuration and functions of each of the second path regulator 230 and the third path regulator 240 may include the configuration and functions of the second path regulator 130 of FIG. Redundant descriptions of the input switch SI, the first path regulator 210, the path switch SP, the second path regulator 230, the third path regulator 240, and the charge controller 250 are omitted from the description It is omitted for convenience.

4, the second charge path P2 (see FIG. 4) may include one or more regulators. For example, as shown in FIG. 13, the second charge path P2 may include a second path regulator 230 and a third path regulator 240 that are connected in parallel. In the embodiment of FIG. 13, when the second charge path P2 is used to charge the battery 1300, the second path regulator 230 and the third path regulator 240 May operate.

As an example, the regulation current generated by the second path regulator 230 may be provided to the battery 1300 as a charging current through the second inductor LT2. As an example, the regulation current generated by the third path regulator 240 may be provided to the battery 1300 as a charging current through the third inductor LT3. For example, the regulation currents generated by the second path regulator 230 and the third path regulator 240 are provided to the battery 1300 as a charging current through the second inductor LT2 and the third inductor LT3 .

13, the charging current provided to the battery 1300 is a first charging current provided through the first inductor LT1 and the path switch SP, a second charging current supplied through the second inductor LT2, , And a third charge current provided through the third inductor LT3. Depending on the charging mode, at least one of the first path regulator 210, the second path regulator 230, and the third path regulator 240 may operate. As an embodiment, when two or more of the first path regulator 210, the second path regulator 230, and the third path regulator 240 are operating, the ratio of the intensities of the charge currents can be adjusted. As an embodiment, the phases of the charge currents can be controlled to be different (i. E., The charge currents can be interleaved).

13, the second charge path P2 is shown as including a second path regulator 230 and a third path regulator 240 connected in parallel. However, the second charging path P2 may include three or more regulators. Further, the second charging path P2 may include regulators connected in series. In addition, the first charging path P1 (see FIG. 3) may also include a plurality of regulators connected in series or in parallel.

14 is a block diagram showing another embodiment of the charging circuit chip of FIG. The charging circuit chip 300 may include a first path regulator 310, a path switch SP, and a second path regulator 330. The charging circuit chip 300 may further include a first input switch SI1, a second input switch SI2, and a charge controller 350. By way of example, the charging circuit chip 1200 of FIG. 1 may include the charging circuit chip 300 of FIG.

The configurations and functions of the first path regulator 310, the path switch SP, the second path regulator 330 and the charge controller 350 are the same as those of the first path regulator 110, the path switch SP, The second path regulator 130, and the charge controller 150, respectively. The configuration and functions of each of the first input switch SI1 and the second input switch SI2 may include the configuration and functions of the input switch SI of FIG. The redundant descriptions of the first input switch SI1, the second input switch SI2, the first path regulator 310, the path switch SP, the second path regulator 330, and the charge controller 350 It is omitted for convenience of explanation.

As described with reference to FIGS. 1 and 2, the charging circuit chip 300 may be powered from a plurality of power sources. By way of example, connector 1110 may be powered from a power source that is wired. The connector 1110 may appropriately convert the supplied power and provide the converted power through the first input terminal IN1 to the charging circuit chip 300. [ The first input switch SI1 may or may not pass the power provided through the first input terminal IN1 under the control of the charge controller 350. [

By way of example, the wireless power manager 1120 may be powered by a wirelessly connected power source. The wireless power manager 1120 may appropriately convert the supplied power and provide the converted power through the second input terminal IN2 to the charging circuit chip 300. [ The second input switch SI2 may or may not pass the power provided through the second input terminal IN2 under the control of the charge controller 350. [

In FIG. 14, power is shown to be provided from the two power sources to the charging circuit chip 300. However, more than two power sources may be provided. The number of power sources, the number of input terminals, and the number of input switches can be variously modified or modified as needed.

As an example, the first path regulator 310 may include a buck converter. In this embodiment, the first path regulator 310 may include a first transistor T1, a second transistor T2, and a first switching driver 312. The configurations and functions of the first transistor T1, the second transistor T2 and the first switching driver 312 are the same as those of the first transistor T1, the second transistor T2 and the switching driver Lt; RTI ID = 0.0 > 112 < / RTI >

As an example, the second path regulator 330 may include a buck converter. In this embodiment, the second path regulator 330 may include a third transistor T3, a fourth transistor T4, and a second switching driver 332. The configurations and functions of the third transistor T3, the fourth transistor T4 and the second switching driver 332 are the same as those of the first transistor T1, the second transistor T2 and the switching driver Lt; RTI ID = 0.0 > 112 < / RTI >

The output of the first path regulator 310 may be provided to the system terminal SYS through the first output terminal R1 and the first inductor LT1. The output of the system terminal SYS may be provided to other components of the mobile electronic device (e.g., the main power manager 1400).

15 is a block diagram illustrating a mobile electronic device including a charging circuit chip in accordance with an embodiment of the present invention. The mobile electronic device 2000 includes an image processor 2100, a wireless communicator 2200, an audio processor 2300, a non-volatile memory 2400, a random access memory (RAM) 2500, a user interface 2600, 2700, a power management integrated circuit chip 2800, and a charging circuit chip 2810. As an example, the mobile electronic device 2000 may be a portable terminal, a portable personal assistant (PDA), a personal media player (PMP), a digital camera, a smart phone, a tablet, a wearable device, or the like.

The image processor 2100 can receive light through the lens 2110. The image sensor 2120 and the image signal processor 2130 included in the image processor 2100 can generate an image based on the provided light.

The wireless communication device 2200 may include an antenna 2210, a transceiver 2220, and a modem 2230. The wireless communication device 2200 may be a wireless communication device such as Long Term Evolution (LTE), World Interoperability for Microwave Access (WiMax), Global System for Mobile communication (GSM), Code Division Multiple Access (CDMA), Bluetooth, Near Field Communication Wireless Fidelity (RFID), Radio Frequency Identification (RFID), and the like.

The audio processor 2300 can process the audio signal using the audio signal processor 2310. [ The audio processor 2300 may be provided with an audio input via a microphone 2320 or may provide audio output via a speaker 2330.

The non-volatile memory 2400 can store data that requires storage regardless of the power supply. For example, the nonvolatile memory 2400 may be a NAND-type flash memory, a phase-change RAM (PRAM), a magneto-resistive RAM (MRAM), a Resistive RAM (REAM), a Ferro- , A NOR-type flash memory, and the like.

The RAM 2500 may store data used in the operation of the mobile electronic device 2000. As an example, the RAM 2500 may be used as a working memory, an operation memory, a buffer memory, and the like of the mobile electronic device 2000. The RAM 2500 may temporarily store data to be processed or processed by the main processor 2700.

The user interface 2600 may handle interfacing between the user and the mobile electronic device 2000 under the control of the main processor 2700. For example, the user interface 2600 may include an input interface such as a keyboard, a keypad, a button, a touch panel, a touch screen, a touch pad, a touch ball, a camera, a microphone, a gyroscope sensor, Further, the user interface 2600 may include an output interface such as a display device, a motor, and the like. For example, the display device may include at least one of a liquid crystal display (LCD), a light emitting diode (LED) display, an organic LED (OLED) display, an AMOLED (Active Matrix OLED)

The main processor 2700 may control the overall operations of the mobile electronic device 2000. The image processor 2100, the wireless communication device 2200, the audio processor 2300, the nonvolatile memory 2400 and the RAM 2500 are connected to the user interface 2600 via the user interface 2600 under the control of the main processor 2700 Command can be executed. Alternatively, the image processor 2100, the wireless communication device 2200, the audio processor 2300, the non-volatile memory 2400, and the RAM 2500 may be controlled by the user through the user interface 2600, under the control of the main processor 2700, Can provide services to the user. The main processor 2700 may be implemented as a SoC (System on Chip). By way of example, main processor 2700 may include an application processor.

The power management integrated circuit chip 2800 can manage the power used in the operation of the mobile electronic device 2000. The power management integrated circuit chip 2800 may include the main power manager 1400 of FIG.

The charging circuit chip 2810 may be implemented in accordance with embodiments of the invention described with reference to FIGS. The charging circuit chip 2810 may include one or more charging paths that include a path switch SP (see FIG. 2), and one or more charge paths that do not include a path switch SP. The charging circuit chip 2810 may operate in one of a battery power mode, a charging mode, and a boost mode in accordance with embodiments of the present invention. The description of the embodiments of the present invention is omitted for convenience of explanation.

The configurations shown in the respective conceptual diagrams should be understood from a conceptual viewpoint only. In order to facilitate understanding of the present invention, the shape, structure, size, etc. of each of the components shown in the conceptual diagram have been exaggerated or reduced. The configuration actually implemented may have a physical shape different from that shown in the respective conceptual diagrams. Each conceptual diagram is not intended to limit the physical form of the component.

The device configurations shown in the respective block diagrams are intended to facilitate understanding of the invention. Each block may be formed of blocks of smaller units depending on the function. Alternatively, the plurality of blocks may form a block of a larger unit depending on the function. That is, the technical idea of the present invention is not limited to the configuration shown in the block diagram.

The present invention has been described above with reference to the embodiments of the present invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Accordingly, the above embodiments should be understood in an illustrative rather than a restrictive sense. That is, the technical idea that can achieve the same object as the present invention, including the gist of the present invention, should be interpreted as being included in the technical idea of the present invention.

Therefore, it is intended that the present invention cover modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. The scope of protection of the present invention is not limited to the above embodiments.

10: Peripherals
100: Charging circuit chip 110: First path regulator
110a: Regulator 112: Switching driver
130: second path regulator 150: charge controller
200: Charging circuit chip 210: First path regulator
230: second path regulator 240: third path regulator
250: Charge Controller
300: Charging circuit chip
310: first path regulator 312: first switching driver
330: second path regulator 332: second switching driver
350: charge controller
1000: Power system 1110: Connector
1120: Wireless power manager 1200: Charging circuit chip
1300: Battery 1400: Main power manager
1500: Processor 1510: I / O interface
1520: Memory 1530: Storage
1540: Display 1550: Communication circuit block
2000: Portable electronic devices
2100: image processor 2110: lens
2120: image sensor 2130: image signal processor
2200: wireless communication device 2210: antenna
2220: transceiver 2230: modem
2300: Audio processor 2310: Audio signal processor
2320: Microphone 2330: Speaker
2400: nonvolatile memory 2500: RAM
2600: user interface 2700: main processor
2800: Power management integrated circuit chip
2810: Charging circuit chip

Claims (10)

A first path regulator configured to generate a first regulation current based on an input voltage and an input current;
A path switch configured to, in response to a control signal, not pass or pass a first charge current generated based on the first regulation current; And
And a second path regulator configured to generate a second regulation current based on the input voltage and the input current,
At least one of the first charge current passed through the path switch and the second charge current generated based on the second regulation current is used to charge the battery,
Wherein the second charge current is delivered to the battery without passing through the path switch. The method according to claim 1,
When the charging mode for charging the battery is operated:
The path switch does not pass the first charge current,
And the second charge current is used to charge the battery. 3. The method of claim 2,
When the charging mode is operated:
Wherein the first path regulator generates a regulation voltage based on the input voltage and the input current,
Wherein the system voltage provided to the power management chip is generated based on the regulation voltage. A charging circuit configured to generate a charging current used to charge a battery,
A first charge path configured to transfer a first charge current generated based on an input voltage and an input current to the battery; And
And a second charge path configured to transfer a second charge current generated based on the input voltage and the input current to the battery,
Wherein the first charge path includes a path switch configured to pass or not pass the first charge current in response to a control signal, and wherein the second charge path does not include the path switch. 5. The method of claim 4,
Wherein the control circuit controls the operation of the path switch and controls the operation of the path switch so that the ratio of the intensity of the first charge current, the intensity of the second charge current, and the intensity of the first charge current to the intensity of the second charge current The charging circuit being configured to control at least one of the charging circuit and the charging circuit. 6. The method of claim 5,
When the charging mode for charging the battery is operated:
The path switch passes the first charge current,
Wherein at least one of the first charge current and the second charge current having passed through the path switch is used to charge the battery. An input switch coupled to an input terminal configured to receive input voltage and input current once;
A first path regulator connected to the other end of the input switch and configured to generate a first regulation voltage based on the input voltage and the input current provided through the input switch;
A path switch connected to a system terminal configured to output a system voltage, the one end of which is generated based on the first regulation voltage, and the other end connected to a battery terminal configured to be connected to the battery;
A second path regulator connected to the other end of the input switch and configured to generate a second regulation voltage based on the input voltage and the input current provided through the input switch; And
And a charge controller configured to control operations of the input switch, the first path regulator, the path switch, and the second path regulator,
Wherein the path switch is not connected between an output terminal configured to output the second regulation voltage and the battery terminal. 8. The method of claim 7,
When the input terminal is floated:
The path switch is turned on under the control of the charge controller,
And an output voltage of the battery is provided to the system terminal through the turn-on path switch. 8. The method of claim 7,
Wherein when the charging controller senses a connection of a peripheral device to the input terminal, a boost mode is operated to supply power to the peripheral device. 10. The method of claim 9,
When the boost mode is operated:
The path switch is turned off under the control of the charge controller,
Wherein the second path regulator receives an output voltage of the battery through the output terminal, converts the output voltage of the battery to an increased voltage, provides the increased voltage to the other end of the input switch,
Wherein the input switch is turned on under the control of the charge controller and provides the increased voltage to the input terminal.

Images