TWM609409U - Power management device - Google Patents

Abstract

A power management device for a consumer product are provided. The power management device includes a memory, a configuration channel interface circuit and a control circuit. When a power supply device is electrically connected to a connector of the consumer product, the control circuit performs a power delivery protocol conforming to a USB specification to the power supply device through the configuration channel interface circuit and a configuration channel pin of the connector, so as to determine a power mode in which the power supply device supplies power to the consumer product. When the power delivery protocol is successful, based on the at least one protocol configuration file stored in the memory, the control circuit performs a vendor-defined messaging protocol to the power supply device through the configuration channel interface circuit and the configuration channel pin, so as to determine whether change the power mode.

Description

Power management device

The new creation relates to a consumer electronic product, and in particular to a power management device for consumer electronic products.

Generally speaking, users will use chargers or adapters to supply power to consumer electronic products, such as desk lamps, speakers, or other consumer electronic products. The connection interface between the charger and the consumer electronic product is generally a connector that meets the standard specifications. For example, the connection interface between the charger and the consumer electronic product may be a universal serial bus (Universal Serial Bus, USB) specification USB type-A connector or a USB type-C connector. Manufacturers may formulate special power source protocols to allow chargers (or adapters) to provide more power than standard specifications to consumer electronic products. Based on the execution of the special power agreement, the power mode between the charger (or adapter) and the consumer electronic product can be adjusted from the standard specification mode to the high power mode to increase the output power of the charger (or adapter). When the power mode between the charger (or adapter) and the consumer electronic product is adjusted to the high-power mode, the power greater than the standard specification can enable the charger (or adapter) to provide greater power to the consumer electronic product. Power requirements.

However, different manufacturers often develop different power agreements. For example, suppose "Charger A" can perform "Power Protocol A" (but not "Power Protocol B"), and "Charger B" can perform "Power Protocol B" (but cannot perform "Power Protocol A" ). When "Charger A" is electrically connected to a consumer electronic product that can perform "Power Protocol A", based on the process of "Power Protocol A", charger A and the consumer electronic product can operate in a high-power mode. However, when "Charger B" is electrically connected to a consumer electronic product that can perform "Power Protocol A", because the consumer electronic product cannot perform "Power Protocol B", the charger B and the consumer electronic product can only Operate in standard specification mode.

It should be noted that the content of the "prior art" paragraph is used to help understand the creation of this new type. Part of the content (or all of the content) disclosed in the "Prior Art" paragraph may not be the conventional technology known to those with ordinary knowledge in the technical field. The content disclosed in the "prior art" paragraph does not mean that the content has been known to those with ordinary knowledge in the technical field before the application for the creation of the new model.

The present invention provides a power management device, which can carry out the agreement corresponding to the power device to determine the power supply mode of the power device to supply consumer electronic products.

In an embodiment of the present invention, the above-mentioned power management device is suitable for being configured in consumer electronic products. The power management device includes a memory, a configuration channel interface circuit, and a control circuit. The memory is suitable for storing at least one protocol profile. The configuration channel interface circuit is adapted to be coupled to the configuration channel pins of the connector of the consumer electronic product. The control circuit is coupled to the configuration channel interface circuit and the memory. When the power supply device is electrically connected to the connector of the consumer electronic product, the control circuit performs a power transmission protocol conforming to the USB specification to the power supply device via the configuration channel interface circuit and the configuration channel pin to determine the power supply device to supply power to the consumer electronic product Power mode. When the power transmission protocol is successful, based on the protocol configuration file stored in the memory, the control circuit performs a vendor-customized message protocol to the power supply device through the configuration channel interface circuit and the configuration channel pins to determine whether to change the power device The power mode between and consumer electronics.

Based on the above, in an embodiment of the present invention, the power management device can transmit the power supply device in a bidirectional manner through the differential signal pin pair of the connector (for example, the D+ pin and the D- pin of the USB connector). Perform the first power supply agreement. When the progress of the first power agreement is successful, the power mode of the power supply device for supplying power to the consumer electronic product can be changed to a high power mode. In another embodiment of the present invention, after the power management device successfully implements a power transmission (PD) protocol that complies with the USB specification, the power management device may also configure channel pins via the connector (for example, USB The CC pin of the connector) performs a vendor customized message (VDM) agreement with the power supply device to determine whether to change the power mode between the power supply device and the consumer electronic product to the high-power mode. In another embodiment of the present invention, the protocol configuration files corresponding to different power protocols can be stored in the memory of the consumer electronic product in advance. When the power supply device is electrically connected to the connector of the consumer electronic product, the power management device can perform the PD protocol and the VDM protocol corresponding to the power supply device to the power supply device according to the different protocol configuration files of the memory to determine whether to switch the power supply The power mode between the device and the consumer electronic product is further changed to a high-power mode. Therefore, the power management device can perform a protocol corresponding to the power supply device to determine the power supply mode of the power supply device for supplying power to the consumer electronic product. Furthermore, in an embodiment of the present invention, the memory can also store traceability data (Traceability Data) so that external electronic devices (not shown) can use the configuration channel pins and configuration of the connector Read by the channel interface circuit. According to design requirements and/or application requirements, the traceability data includes product model (product model), product serial number (product serial number), manufacturing date information, manufacturer information, and/or other related consumer electronics Product-related information/data.

In order to make the above-mentioned features and advantages of the new creation more obvious and understandable, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows.

The term "coupling (or connection)" used in the full text of the specification of this case (including the scope of the patent application) can refer to any direct or indirect connection means. For example, if it is described in the text that the first device is coupled (or connected) to the second device, it should be interpreted as that the first device can be directly connected to the second device, or the first device can be connected through other devices or some This kind of connection means is indirectly connected to the second device. The terms "first" and "second" mentioned in the full text of the description of this case (including the scope of the patent application) are used to name the element (element), or to distinguish different embodiments or ranges, and are not used to limit the number of elements The upper or lower limit of is not used to limit the order of components. In addition, wherever possible, elements/components/steps with the same reference numbers in the drawings and embodiments represent the same or similar parts. Elements/components/steps that use the same reference numerals or use the same terms in different embodiments may refer to related descriptions.

FIG. 1 is a schematic diagram of a circuit block of a consumer electronic product 100 according to an embodiment. The universal serial bus (USB) type-C connector 110 of the consumer electronic product 100 shown in FIG. 1 can be connected to the USB type-C connector 11 of a USB charger 10 via a cable. . The USB charger 10 may be a USB adapter (adapter). When the USB charger 10 is electrically connected to the consumer electronic product 100, the USB charger 10 can supply power to the consumer electronic product 100.

The consumer electronic product 100 includes a power management device 120, a power switch 130 and a load 140. In the case that the consumer electronic product 100 has a desk lamp function, the load 140 may include a light emitting diode (LED), a man-machine interface circuit, and/or other circuits/components. In the case where the consumer electronic product 100 has a speaker function, the load 140 may include a speaker, an amplifier circuit, a wireless communication circuit, and/or other circuits/components. The operating power required by the load 140 is provided by the main power bus Pbus.

The power management device 120 has a power delivery (Power Delivery, PD) function that complies with the USB specification. The power management device 120 can detect the electrical state of the configuration channel (CC) pin of the USB type-C connector 110 to determine whether the USB type-C connector 110 is connected to any external electronic device. When an external electronic device (such as the USB charger 10) is electrically connected to the USB type-C connector 110, the power management device 120 can exchange configuration information with the external electronic device through the CC pin of the USB type-C connector 110. For example, power profile (power profile). The parameters of the power profile are determined by the resistances R1, R2, R3, R4, R5, R6, R7 and R8. The resistors R1 and R2 can provide the first voltage division level to the VMAX pin of the power management device 120 to determine the highest voltage of the power profile. The resistors R3 and R4 can provide the second voltage division level to the VMIN pin of the power management device 120 to determine the lowest voltage of the power profile. The resistors R5 and R6 can provide a third voltage division level to the ILIM_FINE pin of the power management device 120 to determine the fine current level of the power profile. The resistors R7 and R8 can provide a fourth voltage division level to the ILIM_COARSE pin of the power management device 120 to determine the rough current level of the power profile.

When the USB charger 10 is electrically connected to the USB type-C connector 110, the power management device 120 can perform PD agreement with the USB charger 10 through the CC pin of the USB type-C connector 110. When the power management device 120 performs the PD protocol on the USB charger 10 as a result of success, the power management device 120 may turn on the power switch 130 of the consumer electronic product 100 to pass the power provided by the USB charger 10 The Vbus pin of the USB type-C connector 110 and the power switch 130 are transmitted to the main power bus Pbus of the consumer electronic product 100. At this time, the USB charger 10 can supply power to the load 140 of the consumer electronic product 100.

For the design/manufacturing stage, resistors R1 to R8 provide flexibility to adjust the power profile. In any case, the resistors R1 to R8 are fixed on the circuit board of the consumer electronic product 100. After the manufacture of the consumer electronic product 100 is completed, the adjustment of the power profile of the consumer electronic product 100 is no longer flexible. Furthermore, the resistors R1 to R8 will occupy a limited area of the circuit board, and will increase the manufacturing cost of the consumer electronic product 100. In addition, the power management device 120 needs to be configured with VMAX pins, VMIN pins, ILIM_FINE pins, and ILIM_COARSE pins to connect the resistors R1 to R8, and these pins will increase the packaging cost of the power management device 120.

FIG. 2 is a circuit block diagram of a consumer electronic product 200 according to an embodiment of the invention. In the embodiment shown in FIG. 2, the connector 210 of the consumer electronic product 200 may include a USB type-C connector. According to design requirements, in another embodiment, the connector 210 may include other types of USB connectors. In other embodiments, the connector 210 may include other electrical connectors. The connector 210 of the consumer electronic product 200 shown in FIG. 2 may be connected to the connector 21 of the power supply device 20 via a cable. When the power supply device 20 is electrically connected to the consumer electronic product 200, the power supply device 20 can supply power to the consumer electronic product 200. According to application requirements, the power supply device 20 may include a USB charger, a USB adapter, or other power supply devices. When the power supply device 20 is a USB charger or a USB adapter, the connector 21 may include a USB type-A connector, a USB type-C connector, and/or other USB connectors.

The consumer electronic product 200 includes a power management device 220, a power switch 230 and a load 240. In the case that the consumer electronic product 200 has a desk lamp function, the load 240 may include an LED, a human-machine interface circuit, and/or other circuits/components. In the case that the consumer electronic product 200 has a speaker function, the load 240 may include a speaker, an amplifier circuit, a wireless communication circuit, and/or other circuits/components. The operating power required by the load 240 is provided by the main power bus Pbus of the consumer electronic product 200.

The power management device 220 includes a data channel interface circuit 221, a configuration channel interface circuit 222, a control circuit 223, and a memory 224. According to design requirements, the memory 224 may include One-Time Programming (OTP) memory, electrically erasable programmable read only memory (EEPROM), and (or Yes) Other non-volatile memory. The memory 224 can store one or more protocol profiles and/or power profiles. The power profile may include voltage parameters, current parameters, and/or other power parameters.

In addition, according to design requirements, the memory 224 can also store traceability data for external electronic devices (not shown) to be read through the CC pin of the connector 210 and the configuration channel interface circuit 222 take. According to design requirements and/or application requirements, the traceability data includes product model (product model), product serial number (product serial number), manufacturing date information, manufacturer information, and/or other related consumer electronics Information/data related to product 200.

The data channel interface circuit 221 is adapted to be coupled to a differential signal pin pair of the connector 210 of the consumer electronic product 200. In the case that the connector 210 includes a USB connector, the pair of differential signal pins may include the D+ pin and D- pin of the USB connector, and the data channel interface circuit 221 may include differential data conforming to the USB specification The physical layer circuit of the channel. The control circuit 223 is coupled to the data channel interface circuit 221. Through the data channel interface circuit 221, the control circuit 223 can detect the D+ pin and D- pin of the connector 210 in compliance with the USB specification.

Fig. 3 is a schematic flowchart of a power management method according to an embodiment of the invention. In the embodiment shown in FIG. 3, the connector 21 of the power supply device 20 is assumed to be a USB type-A connector, that is, the connector 21 does not have a CC pin. Please refer to Figure 2 and Figure 3. In step S310, the control circuit 223 can detect the signal of the D+ pin and D- pin of the connector 210 (the electrical state of the differential signal pin pair) through the data channel interface circuit 221, so as to know whether there is external electronics. The device is electrically connected to the connector 210. The details of the detection operation in step S310 can comply with the USB specification, and the USB specification is already known, so it will not be repeated here.

When the external electronic device (such as the power supply device 20) is electrically connected to the connector 210 of the consumer electronic product 200, that is, the determination result of step S320 is "Yes", the control circuit 223 may proceed to step S330 to determine the power supply device 20 The power supply mode for supplying power to the consumer electronic product 200. In step S330, the control circuit 223 can detect the electrical state of the differential signal pin pair (D+ pin and D- pin) of the connector 210 through the data channel interface circuit 221. The detection operation in step S330 includes the external electronic device (such as the power supply device 20) applying an electrical signal conforming to the USB specification to the differential signal pin pair (D+ pin and D- pin) of the connector 210 via the connector 21 , Or the external electronic device (such as the power supply device 20) makes the D+ pin and D- pin of the connector 210 in a short-circuit state according to the USB specification to set the electrical state of the differential signal pin pair of the connector 210. The details of the detection operation in step S330 may comply with the USB specification, and the USB specification is already known, so it will not be repeated here.

According to the electrical state of the differential signal pin pair of the connector 210, the control circuit 223 may decide to turn on the power switch 230 of the consumer electronic product 200 (step S340) to reduce the power provided by the power supply device 20 It is transmitted to the main power bus Pbus of the consumer electronic product 200 through the connector 210 and the power switch 230. At this time, the power supply device 20 can supply power to the load 240 of the consumer electronic product 200 in accordance with the USB standard specification. The power supply device 20 unidirectionally sets the electrical state of the differential signal pin pair of the connector 210, so the operation of step S330 can be regarded as a power source protocol performed in a unidirectional manner.

After the power switch 230 is turned on, the control circuit 223 can perform the first power protocol to the power supply device 20 in a bidirectional manner via the differential signal pin pair (D+ pin and D- pin) of the data channel interface circuit 221 and the connector 210 (Step S350) to determine the power mode of the power supply device 20 to supply power to the consumer electronic product 200. For example, the first power protocol may include the QC protocol of the Q company, the SCP protocol of the H company, the FCP protocol of the H company, and/or other power protocols. The QC agreement, SCP agreement and FCP agreement are already known, so they will not be repeated here.

The first power protocol in step S350 may determine whether to make the power supply device 20 further adjust the power mode from the standard power mode specified by the USB2.0 specification to the high power mode, wherein the power of the high power mode exceeds the specification specified by the USB2.0 specification Power. When the power supply mode between the power supply device 20 and the consumer electronic product 200 is adjusted to a high power mode, a power greater than the standard specification can enable the power supply device 20 to provide a greater power demand for the consumer electronic product 200.

The first power protocol in step S350 may include the following operations. The control circuit 223 can receive the protocol signal sent by the power supply device 20 via the differential signal pin pair (D+ pin and D- pin) of the data channel interface circuit 221 and the connector 210. Different manufacturers often develop different power protocols, so that the protocol signals sent by the power supply devices 20 of different manufacturers may have different signal patterns. The memory 224 can store one or more protocol profiles. The control circuit 223 can identify the protocol signal sent by the power supply device 20 based on the protocol configuration file stored in the memory 224 of the consumer electronic product 200. Therefore, regardless of the power protocol performed by the power supply device 20, the power management device 220 can successfully identify the protocol signal sent by the power supply device 20. In the future, if a new power supply device 20 implements a new power supply protocol, the user (external electronic device, not shown) can also connect the protocol configuration file corresponding to the new power supply protocol through the CC pin of the connector 210 and The configuration channel interface circuit 222 is written into (stored in) the memory 224.

In the first power protocol described in step S350, when the control circuit 223 successfully recognizes the protocol signal sent by the power supply device 20, the control circuit 223 can use the data channel interface circuit 221 and the differential signal pin pair (D+ Pin and D-pin) send the answer signal corresponding to the protocol signal to the power supply device 20. After the power supply device 20 receives the answer signal corresponding to the protocol signal, the power supply device 20 can adjust the power supply mode to a high power mode, wherein the power of the high power mode exceeds the power specified by the USB 2.0 specification. When the control circuit 223 cannot recognize the protocol signal sent by the power supply device 20, or when the power supply device 20 does not send the protocol signal, the power supply mode between the power supply device 20 and the consumer electronic product 200 can be maintained as Comply with the standard specification power mode of USB2.0 specification.

Please refer to FIG. 2, the configuration channel interface circuit 222 is adapted to be coupled to the configuration channel (Configuration Channel, CC) pin of the connector 210 of the consumer electronic product 200. In the case where the connector 210 includes a USB connector, the configuration channel interface circuit 222 may include a physical layer circuit that complies with the CC pin of the USB specification. The control circuit 223 is coupled to the configuration channel interface circuit 222. By configuring the channel interface circuit 222, the control circuit 223 can detect the CC pin of the connector 210 in compliance with the USB specification. The control circuit 223 has a power transmission (PD) function compliant with the USB specification. The control circuit 223 can detect the electrical state of the CC pin of the connector 210 by configuring the channel interface circuit 222 to determine whether the connector 210 is connected to any external electronic device.

When an external electronic device (such as the power supply device 20) is electrically connected to the connector 210, the control circuit 223 can exchange configuration information, such as a power profile, with the external electronic device through the CC pin of the connector 210. The parameters of the power configuration file are determined by the configuration file stored in the memory 224. Therefore, the memory 224 provides flexibility to adjust the power profile. Compared with the embodiment shown in FIG. 1, the consumer electronic product 200 shown in FIG. 2 does not need to be configured with resistors R1 to R8, and the power management device 220 does not need to be configured with VMAX pins, VMIN pins, ILIM_FINE pins, and ILIM_COARSE pins. foot. Because the user (external electronic device, not shown) can write (store) new parameters into the memory 224 via the CC pin of the connector 210 and the configuration channel interface circuit 222 at any time, so that the consumer electronic product 200 can be completed. After the manufacture of the consumer electronic product 200, the adjustment of the power profile of the consumer electronic product 200 is still flexible.

Fig. 4 is a schematic flowchart of a power management method according to another embodiment of the invention. In the embodiment shown in FIG. 4, the connector 21 of the power supply device 20 can be a USB type-A connector (without CC pins) or a USB type-C connector (with CC pins). Please refer to Figure 2 and Figure 4. In step S410, the memory 224 may store one or more protocol profiles. In step S420, the control circuit 223 can detect the signal of the D+ pin and D- pin of the connector 210 (the electrical state of the differential signal pin pair) through the data channel interface circuit 221, and/or The channel interface circuit 222 is configured to detect the signal of the CC pin of the connector 210 (the electrical state of the CC pin) to know whether an external electronic device is electrically connected to the connector 210. The details of the detection operation in step S420 may comply with the USB specification, and the USB specification is already known, so it will not be repeated here.

When the external electronic device (such as the power supply device 20) is electrically connected to the connector 210 of the consumer electronic product 200, that is, the determination result of step S430 is "Yes", the control circuit 223 may proceed to step S440 to determine the power supply device 20 The power supply mode for supplying power to the consumer electronic product 200. In step S440, the control circuit 223 may perform a power transmission (PD) protocol compliant with the USB specification to the power supply device 20 via the configuration channel interface circuit 222 and the CC pin of the connector 210. The PD protocol is already known, so it will not be repeated here. The control circuit 223 may perform PD protocol to the power supply device 20 based on a protocol profile stored in the memory 224 of the consumer electronic product 200 to determine the power mode of the power supply device 20 to supply power to the consumer electronic product 200.

When the result of the control circuit 223 performing the PD protocol on the power supply device 20 is successful, that is, the judgment result of step S450 is "Yes", the control circuit 223 may proceed to step S461. In step S461, the control circuit 223 may decide to turn on the power switch 230 of the consumer electronic product 200 to transmit the power provided by the power supply device 20 to the main power of the consumer electronic product 200 via the connector 210 and the power switch 230 Bus Pbus. At this time, the power supply device 20 can supply power to the load 240 of the consumer electronic product 200 in accordance with the USB standard specification.

When the progress of the PD protocol is successful (when the power switch 230 is turned on), the control circuit 223 may proceed to step S462. In step S462, the control circuit 223 may perform a Vendor-Defined Messaging (VDM) agreement to the power supply device 20 via the configuration channel interface circuit 222 and the CC pin of the connector 210. The control circuit 223 may perform a VDM protocol with the power supply device 20 based on the protocol profile stored in the memory 224 of the consumer electronic product 200 to determine whether to further change the relationship between the power supply device 20 and the consumer electronic product 200 Power mode.

The VDM agreement in step S462 may include the following operations. Based on the protocol configuration file stored in the memory 224, the control circuit 223 can send the query signal corresponding to the power supply device 20 to the power supply device via the configuration channel interface circuit 222 and the CC pin of the connector 210 to query the power supply device 20 Does it support VDM protocol? After the power supply device 20 replies the answer signal corresponding to the inquiry signal to the control circuit 223, the power supply mode between the power supply device 20 and the consumer electronic product 200 can be adjusted to a high power mode, wherein the high power mode The power exceeds the power regulated by the PD protocol. When the power supply mode between the power supply device 20 and the consumer electronic product 200 is adjusted to a high power mode, a power greater than the standard specification can enable the power supply device 20 to provide a greater power demand for the consumer electronic product 200.

In the operation of step S462, when there is no protocol configuration file corresponding to the power supply device 20 in the memory 224, the power supply mode between the power supply device 20 and the consumer electronic product 200 can be maintained to comply with the standard specifications specified in the PD protocol Power mode. That is, the power supply device 20 can maintain the power supply mode as the power supply mode determined in step S440.

When the power supply device 20 is electrically connected to the connector 210 of the consumer electronic product 200, when the PD protocol fails or when the CC pin of the connector 210 is not electrically connected to the power supply device 20, That is, the judgment result of step S450 is "No", and the control circuit 223 can perform steps S471, S472, and S473. Steps S471, S472, and S473 shown in FIG. 4 can be deduced by analogy with reference to related descriptions of steps S330, S340, and S350 shown in FIG. 3, so they will not be repeated.

In step S473, based on the protocol configuration file stored in the memory 224, the control circuit 223 may use the data channel interface circuit 221 and the differential signal pin pair of the connector 210 (D+ pin and D- pin) The first power agreement is performed to the power supply device 20 in a bidirectional manner to determine whether to further change the power supply mode between the power supply device 20 and the consumer electronic product 200. The first power protocol in step S473 may determine whether to make the power supply device 20 further adjust the power mode from the standard power mode specified by the USB2.0 specification to the high power mode, wherein the power of the high power mode exceeds the specification specified by the USB2.0 specification Power. When the power supply mode between the power supply device 20 and the consumer electronic product 200 is adjusted to a high power mode, a power greater than the standard specification can enable the power supply device 20 to provide a greater power demand for the consumer electronic product 200.

The first power protocol in step S473 may include the following operations. The control circuit 223 can receive the protocol signal sent by the power supply device 20 via the differential signal pin pair (D+ pin and D- pin) of the data channel interface circuit 221 and the connector 210. The control circuit 223 can identify the protocol signal sent by the power supply device 20 based on the protocol configuration file stored in the memory 224. Therefore, regardless of the power protocol performed by the power supply device 20, the power management device 220 can successfully identify the protocol signal sent by the power supply device 20. When the control circuit 223 successfully recognizes the protocol signal sent by the power supply device 20, the control circuit 223 can send the signal via the differential signal pin pair (D+ pin and D- pin) of the data channel interface circuit 221 and the connector 210 The answer signal corresponding to the protocol signal is sent to the power supply device 20, so that the power supply device 20 adjusts the power supply mode to the high power mode. When the control circuit 223 cannot recognize the protocol signal sent by the power supply device 20, or when the power supply device 20 does not send the protocol signal, the power mode between the power supply device 20 and the consumer electronic product 200 is maintained to comply with the USB 2.0 specification The standard specification power mode.

According to different design requirements, the implementation of the blocks of the power management device 220 and/or the control circuit 223 can be hardware, firmware, software, or the above three. A combination of more than one of them.

In terms of hardware, the blocks of the power management device 220 and/or the control circuit 223 described above can be implemented in a logic circuit on an integrated circuit. The related functions of the power management device 220 and/or the control circuit 223 may be implemented as hardware by using hardware description languages (for example, Verilog HDL or VHDL) or other suitable programming languages. For example, the related functions of the power management device 220 and/or the control circuit 223 may be implemented in one or more controllers, microcontrollers, microprocessors, and application-specific integrated circuits (Application-specific integrated circuit). , ASIC), digital signal processor (DSP), Field Programmable Gate Array (FPGA) and/or various logic blocks, modules and circuits in other processing units.

In terms of software and/or firmware, the related functions of the power management device 220 and/or the control circuit 223 can be implemented as programming codes. For example, general programming languages (such as C, C++, or assembly language) or other suitable programming languages are used to implement the power management device 220 and/or the control circuit 223. The programming code may be recorded/stored in a recording medium, which includes, for example, a read-only memory (Read Only Memory, ROM), a storage device, and/or a random access memory (Random Access Memory, RAM). . A computer, a central processing unit (CPU), a controller, a microcontroller, or a microprocessor can read and execute the programming code from the recording medium, so as to achieve related functions. As the recording medium, a "non-transitory computer readable medium" can be used. For example, tape, disk, card, semiconductor memory, and non-transitory computer readable medium can be used. Programming logic circuits, etc. Furthermore, the program may also be provided to the computer (or CPU) via any transmission medium (communication network or broadcast wave, etc.). The communication network is, for example, the Internet, wired communication, wireless communication, or other communication media.

To sum up, the power management device 220 described in the above embodiments can be connected to the power supply device 20 in a bidirectional manner through the differential signal pin pair of the connector 210 (for example, the D+ pin and the D- pin of the USB connector). The first power agreement. When the progress of the first power agreement is successful, the power mode of the power supply device 20 to supply the consumer electronic product 200 can be changed to a high power mode. In another embodiment of the present invention, after the power management device 220 successfully implements the PD protocol conforming to the USB specification, the power management device 220 can also communicate to the power supply device 20 via the CC pin of the connector 210 The VDM protocol is used to determine whether to further change the power mode between the power supply device 20 and the consumer electronic product 200 to a high power mode. In another embodiment of the present invention, the protocol configuration files corresponding to different power protocols can be stored in the memory 224 of the consumer electronic product 200 in advance. When the power supply device 20 is electrically connected to the connector 210 of the consumer electronic product 200, the power management device 220 can perform the PD protocol and VDM corresponding to the power supply device 20 to the power supply device 20 according to the different protocol configuration files of the memory 224 Agreement to determine whether to further change the power mode between the power supply device 20 and the consumer electronic product 200 to a high power mode. Therefore, the power management device 220 can perform the agreement corresponding to the power supply device 20 to determine the power supply mode of the power supply device 20 to supply the consumer electronic products. Furthermore, in an embodiment of the present invention, the memory can also store traceability data so that external electronic devices (not shown) can pass through the configuration channel pins of the connector and the configuration channel interface circuit. Read. According to design requirements and/or application requirements, the traceability data includes product model, product serial number, manufacturing date information, manufacturer information, and/or other information/data related to consumer electronic products.

Although the creation of this new type has been disclosed in the above embodiments, it is not intended to limit the creation of this new type. Anyone with ordinary knowledge in the technical field can make some changes and changes without departing from the spirit and scope of the creation of the new type. Retouching, so the scope of protection of the creation of this new model shall be subject to the scope of the attached patent application.

10: USB charger 11.110: Universal serial bus (USB) type-C connector 20: Power supply unit 21, 210: Connector 100, 200: consumer electronics 120, 220: power management device 130, 230: power switch 140, 240: load 221: data channel interface circuit 222: Configure channel interface circuit 223: control circuit 224: Memory CC, D+, D-, ILIM_COARSE, ILIM_FINE, Vbus, VMAX, VMIN: pins Pbus: main power bus R1, R2, R3, R4, R5, R6, R7, R8: resistance S310～S350, S410～S473: steps

FIG. 1 is a schematic diagram of a circuit block of a consumer electronic product according to an embodiment. FIG. 2 is a schematic block diagram of a circuit of a consumer electronic product according to an embodiment of the invention. Fig. 3 is a schematic flowchart of a power management method according to an embodiment of the invention. Fig. 4 is a schematic flowchart of a power management method according to another embodiment of the invention.

20: Power supply unit

21, 210: Connector

200: consumer electronics

220: Power management device

221: data channel interface circuit

222: Configure channel interface circuit

223: control circuit

224: Memory

230: Power switch

240: load

CC, D+, D-, Vbus: pin

Pbus: main power bus

Claims (10)

A power management device suitable for being configured in a consumer electronic product, the power management device comprising: A memory, suitable for storing at least one protocol configuration file; A configuration channel interface circuit adapted to be coupled to a configuration channel pin of a connector of the consumer electronic product; and A control circuit coupled to the configuration channel interface circuit and the memory, wherein When a power supply device is electrically connected to the connector of the consumer electronic product, the control circuit performs a power transmission protocol conforming to a USB specification to the power supply device via the configuration channel interface circuit and the configuration channel pins, so as Determine a power mode for the power supply device to supply power to the consumer electronic product, and After the progress of the power transmission protocol is successful, based on the at least one protocol configuration file stored in the memory, the control circuit performs a supplier self-control to the power supply device via the configuration channel interface circuit and the configuration channel pins. A message protocol is established to determine whether to change the power mode between the power supply device and the consumer electronic product. The power management device according to claim 1, wherein the connector includes a USB connector. The power management device according to claim 1, wherein the power supply device includes a USB charger or a USB adapter. The power management device according to claim 1, wherein the supplier customized message agreement includes: Based on the at least one protocol configuration file stored in the memory, the control circuit sends an inquiry signal corresponding to the power supply device to the power supply device via the configuration channel interface circuit and the configuration channel pin; and After the power supply device responds to the control circuit with an answer signal corresponding to the inquiry signal, the power supply mode between the power supply device and the consumer electronic product is adjusted to a high power mode, wherein the power of the high power mode Exceed the power specified by the power transmission agreement. The power management device according to claim 1, wherein When the at least one protocol configuration file corresponding to the power supply device does not exist in the memory, the power mode between the power supply device and the consumer electronic product is maintained to comply with a standard power mode specified by the power transmission protocol . The power management device according to claim 1, further comprising: A data channel interface circuit adapted to be coupled to a differential signal pin pair of the connector, wherein the control circuit is also coupled to the data channel interface circuit, In the case that the power supply device is electrically connected to the connector of the consumer electronic product, when the power transmission protocol fails or when the configuration channel pin is not electrically connected to the power supply device, The control circuit detects an electrical state of the differential signal pin pair through the data channel interface circuit, and turns on a power switch of the consumer electronic product according to the electrical state to provide a power supply device Power is transmitted to a main power bus of the consumer electronic product through the connector and the power switch, and After the power switch is turned on, the control circuit performs a bidirectional first power protocol to the power supply device via the data channel interface circuit and the differential signal pin to determine whether to change the power supply device to the consumer The power mode of the electronic product. The power management device according to claim 6, wherein the first power agreement includes: The control circuit receives a protocol signal sent by the power supply device through the data channel interface circuit and the differential signal pin pair; The control circuit identifies the protocol signal based on the at least one protocol configuration file stored in the memory; When the control circuit successfully recognizes the protocol signal sent by the power supply device, the control circuit sends an answer signal corresponding to the protocol signal to the power supply device via the data channel interface circuit and the differential signal pin pair, So that the power supply device adjusts the power mode to a high power mode, wherein the power of the high power mode exceeds the power regulated by a USB2.0 specification; and When the control circuit cannot recognize the protocol signal sent by the power supply device, or when the power supply device does not send the protocol signal, the power supply mode between the power supply device and the consumer electronic product is maintained to comply with the A standard power mode of the USB2.0 specification. The power management device according to claim 6, wherein the pair of differential signal pins includes a D+ pin and a D- pin of a USB connector. The power management device according to claim 1, wherein the memory also stores traceability data for an electronic device to read through the configuration channel interface circuit and the configuration channel pin. The power management device according to claim 9, wherein the traceability data includes at least one of a product serial number, a manufacturing date information, and a manufacturer information.

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