CN113985996A - Switching type power supply module and memory storage device - Google Patents
Switching type power supply module and memory storage device Download PDFInfo
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- CN113985996A CN113985996A CN202111335437.7A CN202111335437A CN113985996A CN 113985996 A CN113985996 A CN 113985996A CN 202111335437 A CN202111335437 A CN 202111335437A CN 113985996 A CN113985996 A CN 113985996A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention provides a switching power supply module and a memory storage device. The switching power supply module comprises a first voltage adjusting circuit, a second voltage adjusting circuit, a switching circuit and a control circuit. The first voltage adjusting circuit is used for adjusting the original voltage to a first voltage. The second voltage adjusting circuit is used for adjusting the original voltage to a second voltage. The power conversion efficiency of the first voltage regulating circuit is higher than that of the second voltage regulating circuit. The control circuit is used for controlling the switching circuit to conduct a first power supply path between the first voltage adjusting circuit and the first load circuit in a first state so as to provide a first voltage to the first load circuit. The control circuit is further configured to control the switching circuit to conduct a second power supply path between the second voltage adjusting circuit and the second load circuit in the second state, so as to provide the second voltage to the second load circuit.
Description
Technical Field
The present invention relates to power supply technologies, and particularly to a switching power supply module and a memory storage device.
Background
Most electronic devices are provided with a Regulator (Regulator) to regulate (e.g. step down) an input power to an appropriate value and then provide the regulated value to various electronic circuits inside the electronic device. Common voltage regulators include direct current to direct current (DC/DC) voltage regulators and Low Dropout (LDO) voltage regulators. The DC/DC regulator is a regulation circuit with high power use efficiency. For example, a DC/DC regulator can generally maintain a power utilization of more than 90% when performing a step-down operation. Therefore, DC/DC regulators are often used to power electronic circuits that consume a large amount of power. On the other hand, the LDO voltage regulator consumes excessive power in the form of heat when performing the step-down operation, so the power supply of the LDO voltage regulator has poor efficiency. Therefore, the LDO regulator is suitable for low current supply compared with the DC/DC regulator. In addition, compared with a DC/DC voltage regulator, the LDO voltage regulator has the advantage of lower construction cost. Therefore, it is one of the subjects of research by those skilled in the art how to configure the two voltage regulators in the same electronic device simultaneously and make them complement each other in operation.
Disclosure of Invention
The invention provides a switching power supply module and a memory storage device, which can improve the working efficiency of different types of adjusting circuits when the adjusting circuits are matched with each other for use.
An exemplary embodiment of the present invention provides a switching power supply module, which includes a first voltage adjusting circuit, a second voltage adjusting circuit, a switching circuit and a control circuit. The first voltage adjusting circuit is used for adjusting the original voltage to a first voltage. The second voltage adjusting circuit is used for adjusting the original voltage to a second voltage. The control circuit is connected to the first voltage adjusting circuit, the second voltage adjusting circuit and the switching circuit. The control circuit is used for controlling the switching circuit to operate in one of a first state and a second state. In the first state, the switching circuit is configured to provide the first voltage to the first load circuit and the second load circuit. In the second state, the switching circuit is further configured to cut off a power supply path between the first voltage adjusting circuit and the first load circuit and provide the second voltage to the second load circuit. The power conversion efficiency of the first voltage regulating circuit is higher than that of the second voltage regulating circuit.
In an exemplary embodiment of the present invention, the operation of the control circuit controlling the switching circuit to operate in the one of the first state and the second state includes: in the second state, starting the first voltage adjusting circuit to generate the first voltage; setting the second voltage according to the first voltage; and controlling the switching circuit to switch from the second state to the first state after setting the second voltage according to the first voltage.
In an exemplary embodiment of the present invention, the operation of controlling the switching circuit to switch from the second state to the first state after setting the second voltage according to the first voltage includes: and under the condition that the second voltage is not higher than the first voltage, controlling the switching circuit to switch from the second state to the first state.
In an exemplary embodiment of the present invention, the operation of the control circuit controlling the switching circuit to operate in the one of the first state and the second state includes: in the first state, setting the second voltage according to the first voltage; controlling the switching circuit to switch from the first state to the second state after setting the second voltage according to the first voltage; and in the second state, turning off the first voltage regulating circuit.
In an exemplary embodiment of the present invention, the operation of controlling the switching circuit to switch from the first state to the second state after setting the second voltage according to the first voltage includes: and under the condition that the second voltage is not lower than the first voltage, controlling the switching circuit to switch from the first state to the second state.
In an example embodiment of the present invention, the first load circuit includes a rewritable non-volatile memory module, and the second load circuit includes a peripheral component interconnect Express (PCI Express, PCIe) interface.
An exemplary embodiment of the present invention further provides a memory storage device, which includes a rewritable nonvolatile memory module, a high-speed peripheral component connection interface, and a switching power supply module. The switching power supply module is connected to the rewritable nonvolatile memory module and the high-speed peripheral part connecting interface. The first voltage adjusting circuit in the switching power supply module is used for adjusting the original voltage to a first voltage. The second voltage adjusting circuit in the switching power supply module is used for adjusting the original voltage to a second voltage. The switching power supply module is used for operating in one of a first state and a second state. In the first state, the switching power supply module is used for providing the first voltage to the rewritable nonvolatile memory module and the high-speed peripheral part connecting interface. In the second state, the switching power supply module is configured to cut off a power supply path between the first voltage adjusting circuit and the first load circuit and provide the second voltage to the high-speed peripheral component connection interface. The power conversion efficiency of the first voltage regulating circuit is higher than that of the second voltage regulating circuit.
In an exemplary embodiment of the present invention, the first voltage adjusting circuit adjusts the original voltage to the first voltage by charging an inductance element, and the second voltage adjusting circuit adjusts the original voltage to the second voltage based on a feedback of an error amplifier.
In an exemplary embodiment of the invention, the operation of the switching power supply module in the one of the first state and the second state includes: in the second state, starting the first voltage adjusting circuit to generate the first voltage; setting the second voltage according to the first voltage; and switching from the second state to the first state after setting the second voltage according to the first voltage.
In an exemplary embodiment of the present invention, the operation of setting the second voltage according to the first voltage includes: the first voltage is detected at an output terminal of the first voltage adjusting circuit.
In an exemplary embodiment of the present invention, the operation of setting the second voltage according to the first voltage includes: the second voltage is set to be not higher than the first voltage.
In an exemplary embodiment of the present invention, the operation of switching from the second state to the first state after setting the second voltage according to the first voltage includes: switching from the second state to the first state in a state where the second voltage is not higher than the first voltage.
In an exemplary embodiment of the invention, the operation of the switching power supply module in the one of the first state and the second state includes: in the first state, setting the second voltage according to the first voltage; switching from the first state to the second state after setting the second voltage according to the first voltage; and in the second state, turning off the first voltage regulating circuit.
In an exemplary embodiment of the present invention, the operation of setting the second voltage according to the first voltage includes: the second voltage is set to be not lower than the first voltage.
In an exemplary embodiment of the present invention, the operation of switching from the first state to the second state after setting the second voltage according to the first voltage includes: switching from the first state to the second state in a state where the second voltage is not lower than the first voltage.
In an exemplary embodiment of the invention, the first voltage regulating circuit includes a direct current to direct current (DC/DC) regulator, and the second voltage regulating circuit includes a Low Dropout (LDO) regulator.
Based on the above, the first voltage adjusting circuit adjusts the original voltage to the first voltage. The second voltage adjusting circuit is used for adjusting the original voltage to a second voltage. In particular, the power conversion efficiency of the first voltage regulation circuit is higher than the power conversion efficiency of the second voltage regulation circuit. The control circuit can selectively control the switching circuit to conduct the first power supply path to provide the first voltage to the first load circuit in a first state or conduct the second power supply path to provide the second voltage to the second load circuit in a second state. Therefore, the working efficiency of the two voltage adjusting circuits of different types can be improved when the two voltage adjusting circuits are matched with each other for use.
Drawings
Fig. 1 is a schematic diagram of a switching power supply module according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a switching power module or a switching circuit operating in a first state according to an exemplary embodiment of the invention;
FIG. 3 is a diagram illustrating the switching power module or the switching circuit operating in a second state according to an exemplary embodiment of the invention;
FIG. 4 is a schematic diagram illustrating a first voltage regulation circuit according to an exemplary embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a second voltage regulation circuit according to an exemplary embodiment of the present invention;
FIG. 6 is a schematic diagram of a memory storage device according to an example embodiment of the invention.
Description of the reference numerals
10,60 switching type power supply module
11,12 voltage regulating circuit
111 inductive element
121 error amplifier
13 switching circuit
101,102 load circuit
V1, V2, VDD, Vfb Voltage
EN, SEL, CTRL signals
401 switching element
C1 capacitive element
L1 inductive element
Vin is input voltage
Vout output voltage
501 error amplifier
502 transistor element
R1, R2 impedance element
Vref-reference Voltage
600 memory storage device
61 rewritable nonvolatile memory module
62 high-speed peripheral parts connection interface
P1, P2 power supply
Detailed Description
The present invention will be described in more detail with reference to exemplary embodiments, but the present invention is not limited to the exemplary embodiments. Also, suitable combinations between the exemplary embodiments are also allowed. The term "coupled" as used throughout this specification, including the claims, may refer to any direct or indirect connection means. For example, if a first device couples to a second device, that connection should be interpreted as either being a direct connection, or a indirect connection via other devices and some means of connection. Furthermore, the term "signal" may refer to at least one current, voltage, charge, temperature, data, or any other signal or signals.
Fig. 1 is a schematic diagram of a switching power supply module according to an exemplary embodiment of the invention. Referring to fig. 1, the switching power supply module 10 may include a voltage regulation circuit (also referred to as a first voltage regulation circuit) 11, a voltage regulation circuit (also referred to as a second voltage regulation circuit) 12, a switching circuit 13, and a control circuit 14.
The voltage adjusting circuit 11 is used to adjust the voltage VDD (also referred to as the original voltage) to a voltage V1 (also referred to as the first voltage). For example, the voltage V1 may be lower than the voltage VDD. The voltage adjusting circuit 12 can be used to adjust the voltage VDD to a voltage (also referred to as a second voltage) V2. For example, the voltage V2 may be lower than the voltage VDD. In particular, the power conversion efficiency of the voltage adjustment circuit 11 is higher than that of the voltage adjustment circuit 12.
In an exemplary embodiment, the voltage adjusting circuit 11 may include an inductance (inductance) element 111. The voltage adjusting circuit 11 may be configured to adjust the voltage VDD to the voltage V1 by charging the inductive element 111. For example, the voltage regulation circuit 11 may include a direct current to direct current (DC/DC) regulator.
In an exemplary embodiment, the voltage adjustment circuit 12 may include an error amplifier (error amplifier) 121. The voltage adjusting circuit 12 can be used to adjust the voltage VDD to the voltage V2 based on the feedback of the error amplifier 121. For example, the voltage regulation circuit 12 may include a Low Dropout (LDO) regulator.
The switching circuit 13 is connected to the voltage adjusting circuit 11, the voltage adjusting circuit 12, and the control circuit 14. The switching circuit 13 (or the switching power supply module 10) can be selectively operated in one of a first state and a second state. In the first state, the switching circuit 13 can synchronously provide the voltage V1 generated by the voltage regulating circuit 11 to the load circuit (also referred to as a first load circuit) 101 and the load circuit (also referred to as a second load circuit) 102. That is, in the first state, the voltage adjusting circuit 11 can synchronously supply the load circuits 101 and 102 with the voltage V1 through the switching circuit 13. On the other hand, in the second state, the switching circuit 13 may switch off the power supply path between the voltage adjusting circuit 11 and the load circuit 101 and supply the voltage V2 generated by the voltage adjusting circuit 12 to the load circuit 102. That is, in the second state, the voltage adjustment circuit 12 may supply the load circuit 102 with the voltage V2 alone via the switching circuit 13.
The control circuit 14 is connected to the voltage adjustment circuit 11, the voltage adjustment circuit 12, and the switching circuit 13. The control circuit 14 can be used to switch the circuit 13 to operate in the first state or the second state. For example, the control circuit 14 may send a signal (also referred to as a switching signal) SEL to the switching circuit 13. The signal SEL may be used to control the switching circuit 13 to operate in the first state or the second state. The switching circuit 13 may automatically operate in a first state or a second state in response to a signal SEL. For example, the control circuit 14 may include a microprocessor, a Digital Signal Processor (DSP), a Programmable controller, an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or other similar devices or combinations thereof.
Fig. 2 is a schematic diagram illustrating the switching power module or the switching circuit operating in a first state according to an exemplary embodiment of the invention. Referring to fig. 2, when power is required to be supplied to the load circuits 101 and 102 at the same time, the control circuit 14 may send a signal (also referred to as an enable signal) EN to the voltage regulation circuit 11 to activate the voltage regulation circuit 11. The enabled voltage regulation circuit 11 may generate a voltage V1. On the other hand, the control circuit 14 may send a signal SEL to the switching circuit 13 to control the switching circuit 13 to operate in the first state. In the first state, the switching circuit 13 may turn on the power supply path between the voltage adjusting circuit 11 and the load circuit 101 and the power supply path between the voltage adjusting circuit 11 and the load circuit 102. Thus, in the first state, the switching circuit 13 can provide the voltage V1 generated by the voltage adjusting circuit 11 to the load circuits 101 and 102 to synchronously supply power to the load circuits 101 and 102.
Fig. 3 is a schematic diagram illustrating the switching power module or the switching circuit operating in the second state according to the exemplary embodiment of the invention. Referring to fig. 3, when power supply to the load circuit 101 is not required, the control circuit 14 may turn off the voltage adjusting circuit 11 via the signal EN. The turned-off voltage adjustment circuit 11 may not generate the voltage V1. On the other hand, the control circuit 14 may send a signal SEL to the switching circuit 13 to control the switching circuit 13 to operate in the second state. In the second state, the switching circuit 13 may switch off the power supply path between the voltage adjusting circuit 11 and the load circuit 101 to stop supplying power to the load circuit 101. Meanwhile, in the second state, the switching circuit 13 may turn on the power supply path between the voltage adjusting circuit 12 and the load circuit 102 to supply power to the load circuit 102 using the voltage V2 generated by the voltage adjusting circuit 12.
It should be noted that the power utilization rate (or power conversion efficiency) of the voltage adjusting circuit 11 in the operation of adjusting the voltage VDD to the voltage V1 (for example, stepping down the voltage VDD) is higher than the power utilization rate (or power conversion efficiency) of the voltage adjusting circuit 12 in the operation of adjusting the voltage VDD to the voltage V2 (for example, stepping down the voltage VDD). Therefore, in the exemplary embodiment of fig. 2, when the load circuits 101 and 102 need to be synchronously powered, the voltage adjusting circuit 11 is used to synchronously supply large current to the load circuits 101 and 102, so that the overall power utilization rate can be effectively improved. On the other hand, in the exemplary embodiment of fig. 3, when only the load circuit 102 needs to be powered, the voltage regulator circuit 12 is used to supply a small current to the load circuit 102, so that the static power consumption generated by the operation of the voltage regulator circuit 11 can be effectively reduced.
It should be noted that in the second state shown in fig. 3, the voltage adjusting circuit 11 is in the off state. Before switching the switching power supply module 10 or the switching circuit 13 from the second state to the first state, the control circuit 13 may activate the voltage adjusting circuit 11 via the signal EN. The enabled voltage regulation circuit 11 may generate a voltage V1. Then, the control circuit 13 may set the voltage V2 generated by the voltage adjusting circuit 12 according to the voltage V1. For example, the control circuit 13 may send a signal (also referred to as a voltage control signal CTRL) to the voltage regulation circuit 12 to instruct the voltage regulation circuit 12 to regulate the voltage V2. For example, the control circuit 13 may instruct the voltage adjustment circuit 12 to set the voltage V2 to be not higher than the voltage V1. After setting the voltage V2 according to the voltage V1, the control circuit 13 may control the switching circuit 13 to switch from the second state to the first state via the signal SEL. For example, after setting the voltage V2 according to the voltage V1, in a state where the voltage V2 is not higher than the voltage V1, the control circuit 13 may control the switching circuit 13 to switch from the second state to the first state (e.g., from the power supply state of fig. 3 to the power supply state of fig. 2) via the signal SEL. In addition, after the voltage V2 is set according to the voltage V1, the control circuit 13 may turn off the voltage adjusting circuit 12. Therefore, in the process of switching the switching circuit 13 from the second state to the first state, the current supplied to the load circuit 102 can be gently converted from the voltage adjusting circuit 12 originally responsible for power supply to be supplied by the voltage adjusting circuit 11, thereby reducing the adverse effect on the load circuit 102 caused by the change of the power supply source.
On the other hand, in the first state shown in fig. 2, the voltage regulator circuit 11 is in an activated state to continuously generate the voltage V1. Before switching the switching power supply module 10 or the switching circuit 13 from the first state to the second state, the control circuit 13 may set the voltage V2 generated by the voltage adjusting circuit 12 according to the voltage V1. For example, the control circuit 13 may instruct the voltage adjustment circuit 12 to set the voltage V2 not to be lower than the voltage V1 via the signal CTRL. After setting the voltage V2 according to the voltage V1, the control circuit 13 may control the switching circuit 13 to switch from the first state to the second state via the signal SEL. For example, after instructing the voltage adjustment circuit 12 to adjust the voltage V2, the control circuit 13 may control the switching circuit 13 to switch from the first state to the second state (e.g., to switch from the power supply state of fig. 2 to the power supply state of fig. 3) via the signal SEL in a state where the voltage V2 is not lower than the voltage V1. In addition, after the voltage V2 is set according to the voltage V1, the control circuit 13 may turn off the voltage adjustment circuit 11 to stop generating the voltage V1. Therefore, in the process of switching the switching circuit 13 from the first state to the second state, the current supplied to the load circuit 102 can be gently converted from the voltage adjusting circuit 11 originally responsible for power supply to be supplied by the voltage adjusting circuit 12, thereby reducing the adverse effect on the load circuit 102 caused by the change of the power supply source.
In an exemplary embodiment, the operation of setting the voltage V2 according to the voltage V1 may be performed by setting the voltage V2 to be close to or the same as the voltage V1 by the voltage adjusting circuit 12. By this, in the process of switching the switching circuit 13 from the first state to the second state or from the second state to the first state, the voltages V1 and V2 may tend to coincide, so that the current supplied to the load circuit 102 may be switched between the voltage adjustment circuits 11 and 12 smoothly.
In an exemplary embodiment, the control circuit 13 can detect the voltage 11 at the output terminal of the voltage adjusting circuit 11 in real time. Based on the detected voltage 11, the control circuit 13 can instruct the voltage adjustment circuit 12 to adjust the voltage V2, such as to make the voltage V2 track or approach the voltage 11.
Fig. 4 is a schematic diagram illustrating a first voltage regulation circuit according to an exemplary embodiment of the present invention. Referring to fig. 1 and 4, the voltage adjustment circuit 11 may include a switch element 401, an inductive element L1, and a capacitive element C1. The switching element 401 may be in an on or off state to charge or discharge the inductance element L1, thereby generating the output voltage Vout according to the input voltage Vin. Further, the voltage V1 may be generated from the output voltage Vout of fig. 4. It should be noted that, in various exemplary embodiments, the configuration of the electronic components in the voltage regulating circuit 11 can be adjusted according to practical requirements to meet the functional requirements of the corresponding DC/DC voltage regulator.
Fig. 5 is a schematic diagram illustrating a second voltage regulation circuit according to an exemplary embodiment of the present invention. Referring to fig. 1 and 5, the voltage adjustment circuit 12 may include an error amplifier 501, a transistor device 502, a resistance device R1, a resistance device R2, and a reference voltage Vref. The error amplifier 501 controls the voltage difference between the two terminals of the transistor 502 according to the voltage Vfb and the reference voltage Vref, thereby adjusting the output voltage Vout. In other words, the error amplifier 501 can feed back the output voltage Vout to adjust the voltage difference across the transistor device 502, thereby affecting the output voltage Vout. The voltage V2 may be generated from the output voltage Vout of fig. 5.
In an exemplary embodiment, during the period of setting the voltage V2 according to the voltage V1, the control circuit 13 of fig. 1 may set the voltage Vref according to the voltage V1, for example, to direct or connect the voltage Vref to the output terminal of the voltage adjustment circuit 11. For example, the voltage Vref may be connected to the output terminal of the voltage adjusting circuit 11 via a voltage dividing circuit. The voltage divider circuit can be used to convert the voltage V1 at the output terminal of the voltage regulator circuit 11 into the voltage Vref (e.g., Vref V1 × R2/(R1+ R2)). Thus, during the period of setting the voltage V2 according to the voltage V1, the output voltage Vout can gradually approach or be the same as the voltage V1. It should be noted that, in various exemplary embodiments, the configuration of the electronic components in the voltage regulating circuit 12 can be adjusted according to practical requirements to meet the functional requirements of the corresponding LDO regulator.
In the example embodiment of fig. 1, the load circuit 101 may include a rewritable non-volatile memory module, and the load circuit 102 may include a peripheral component interconnect Express (PCI Express, PCIe) interface. However, in other exemplary embodiments, the load circuits 101 and 102 may comprise other types of electronic circuits or electronic devices.
In an exemplary embodiment, the switching power module 10 mentioned in the foregoing exemplary embodiments may be disposed in a memory storage device. However, in another exemplary embodiment, the switching power module 10 may be disposed in other types of electronic devices, and is not limited to a memory storage device.
In an example embodiment, a memory storage device (also referred to as a memory storage system) includes a rewritable non-volatile memory module (rewritable non-volatile memory module) and a controller (also referred to as a control circuit). Typically, memory storage devices are used with a host system so that the host system can write data to or read data from the memory storage devices.
FIG. 6 is a schematic diagram of a memory storage device according to an example embodiment of the invention. Referring to fig. 6, the memory storage device 600 includes a switching power supply module 60, a rewritable nonvolatile memory module 61, and a peripheral component interconnect Express (PCI Express, PCIe) interface 62. The rewritable non-volatile memory module 61 can be used to store data from a host system. The PCIe interface 62 may be used to connect to a host system.
The switching power module 60 may include the switching power module 10 of fig. 1, the rewritable nonvolatile memory module 61 may be regarded as the load circuit 101 of fig. 1, and the PCIe interface 62 may be regarded as the load circuit 102 of fig. 1. The switching power module 60 can use the power supplies P1 and P2 to respectively power the rewritable nonvolatile memory modules 61 and 62. For example, the power source P1 can be provided by the voltage regulation circuit 11 of fig. 1, and the power source P2 can be selectively provided by the voltage regulation circuit 11 or 12 of fig. 1 in different states of the switching power module 60. For details of the related operations, reference may be made to the description of the foregoing exemplary embodiments, and details will not be repeated herein. In an exemplary embodiment, the rewritable nonvolatile memory module 61 and/or the PCIe interface 62 can be replaced by other types of electronic circuits or electronic devices, and the invention is not limited thereto.
The rewritable nonvolatile memory module 61 is used for storing data written by the host system. The rewritable nonvolatile memory module 61 may include a Single Level Cell (SLC) NAND type flash memory module (i.e., a flash memory module that can store 1 bit in one memory Cell), a two Level Cell (MLC) NAND type flash memory module (i.e., a flash memory module that can store 2 bits in one memory Cell), a Triple Level Cell (TLC) NAND type flash memory module (i.e., a flash memory module that can store 3 bits in one memory Cell), a Quad Level Cell (QLC) NAND type flash memory module (i.e., a flash memory module that can store 4 bits in one memory Cell), other flash memory modules, or other memory modules having the same characteristics.
In summary, the switching power supply module according to the exemplary embodiment of the invention can selectively conduct or switch power supply paths of different types of voltage regulation circuits (such as a DC/DC regulator and an LDO regulator), so as to achieve the best economic benefits of the voltage regulation circuits in the joint operation. In addition, the output voltage of the LDO voltage regulator is enabled to track or approach the output voltage of the DC/DC voltage regulator in advance during the period of switching the power supply path, so that the adverse effect on a load circuit caused by the switching of the power supply path can be reduced.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (21)
1. A switched power module comprising:
a first voltage adjusting circuit for adjusting the original voltage to a first voltage;
a second voltage adjusting circuit for adjusting the original voltage to a second voltage;
a switching circuit; and
a control circuit connected to the first voltage adjusting circuit, the second voltage adjusting circuit and the switching circuit,
wherein the control circuit is used for controlling the switching circuit to operate in one of a first state and a second state,
in the first state, the switching circuit is configured to provide the first voltage to a first load circuit and a second load circuit,
in the second state, the switching circuit is further configured to cut off a power supply path between the first voltage adjusting circuit and the first load circuit and provide the second voltage to the second load circuit, and
the power conversion efficiency of the first voltage regulating circuit is higher than that of the second voltage regulating circuit.
2. The switched power module of claim 1, wherein the first voltage adjustment circuit adjusts the raw voltage to the first voltage by charging an inductive element, and
the second voltage adjustment circuit adjusts the original voltage to the second voltage based on feedback of an error amplifier.
3. The switched power module of claim 1, wherein the operation of the control circuit to control the switching circuit to operate in the one of the first state and the second state comprises:
in the second state, starting the first voltage adjusting circuit to generate the first voltage;
setting the second voltage according to the first voltage; and
controlling the switching circuit to switch from the second state to the first state after setting the second voltage according to the first voltage.
4. The switched power module of claim 3, wherein setting the second voltage in accordance with the first voltage comprises:
the first voltage is detected at an output terminal of the first voltage adjusting circuit.
5. The switched power module of claim 3, wherein setting the second voltage in accordance with the first voltage comprises:
the second voltage is set to be not higher than the first voltage.
6. The switched power module of claim 3, wherein controlling the switching circuit to switch from the second state to the first state after setting the second voltage according to the first voltage comprises:
and under the condition that the second voltage is not higher than the first voltage, controlling the switching circuit to switch from the second state to the first state.
7. The switched power module of claim 1, wherein the operation of the control circuit to control the switching circuit to operate in the one of the first state and the second state comprises:
in the first state, setting the second voltage according to the first voltage;
controlling the switching circuit to switch from the first state to the second state after setting the second voltage according to the first voltage; and
and in the second state, the first voltage adjusting circuit is closed.
8. The switched power module of claim 7, wherein setting the second voltage in accordance with the first voltage comprises:
the second voltage is set to be not lower than the first voltage.
9. The switched power module of claim 7, wherein controlling the switching circuit to switch from the first state to the second state after setting the second voltage according to the first voltage comprises:
and under the condition that the second voltage is not lower than the first voltage, controlling the switching circuit to switch from the first state to the second state.
10. The switched-mode power supply module of claim 1 wherein the first voltage regulation circuit comprises a direct current to direct current (DC/DC) regulator and the second voltage regulation circuit comprises a low dropout regulator.
11. The switched power module of claim 1, wherein the first load circuit comprises a rewritable non-volatile memory module and the second load circuit comprises a high-speed peripheral component connection interface.
12. A memory storage device, comprising:
a rewritable non-volatile memory module;
a high-speed peripheral part connection interface;
a switching power supply module connected to the rewritable nonvolatile memory module and the high-speed peripheral component connection interface,
wherein the first voltage adjusting circuit in the switching power supply module is used for adjusting the original voltage to a first voltage,
a second voltage adjusting circuit in the switching power supply module is used for adjusting the original voltage to a second voltage,
wherein the switching power supply module is used for operating in one of a first state and a second state,
in the first state, the switching power supply module is used for providing the first voltage to the rewritable nonvolatile memory module and the high-speed peripheral part connecting interface,
in the second state, the switching power supply module is used for cutting off a power supply path between the first voltage regulating circuit and the first load circuit and providing the second voltage to the high-speed peripheral component connection interface, and
the power conversion efficiency of the first voltage regulating circuit is higher than that of the second voltage regulating circuit.
13. The memory storage device of claim 12, wherein the first voltage adjustment circuit adjusts the raw voltage to the first voltage by charging an inductive element, and
the second voltage adjustment circuit adjusts the original voltage to the second voltage based on feedback of an error amplifier.
14. The memory storage device of claim 12, wherein operation of the switched power module to operate in the one of the first state and the second state comprises:
in the second state, starting the first voltage adjusting circuit to generate the first voltage;
setting the second voltage according to the first voltage; and
switching from the second state to the first state after setting the second voltage according to the first voltage.
15. The memory storage device of claim 14, wherein the operation of setting the second voltage according to the first voltage comprises:
the first voltage is detected at an output terminal of the first voltage adjusting circuit.
16. The memory storage device of claim 14, wherein the operation of setting the second voltage according to the first voltage comprises:
the second voltage is set to be not higher than the first voltage.
17. The memory storage device of claim 14, wherein switching from the second state to the first state after setting the second voltage according to the first voltage comprises:
switching from the second state to the first state in a state where the second voltage is not higher than the first voltage.
18. The memory storage device of claim 12, wherein operation of the switched power module to operate in the one of the first state and the second state comprises:
in the first state, setting the second voltage according to the first voltage;
switching from the first state to the second state after setting the second voltage according to the first voltage; and
and in the second state, the first voltage adjusting circuit is closed.
19. The memory storage device of claim 18, wherein the operation of setting the second voltage according to the first voltage comprises:
the second voltage is set to be not lower than the first voltage.
20. The memory storage device of claim 18, wherein switching from the first state to the second state after setting the second voltage according to the first voltage comprises:
switching from the first state to the second state in a state where the second voltage is not lower than the first voltage.
21. The memory storage device of claim 12, wherein the first voltage regulation circuit comprises a dc-to-dc voltage regulator and the second voltage regulation circuit comprises a low dropout voltage regulator.
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| CN1396509A (en) * | 2001-07-05 | 2003-02-12 | Lg电子株式会社 | Power supply of central processing unit |
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| CN110299171A (en) * | 2018-03-22 | 2019-10-01 | 东芝存储器株式会社 | Control method in storage system, power control circuit and storage system |
| US10545523B1 (en) * | 2018-10-25 | 2020-01-28 | Qualcomm Incorporated | Adaptive gate-biased field effect transistor for low-dropout regulator |
| CN110971108A (en) * | 2019-12-30 | 2020-04-07 | 珠海格力电器股份有限公司 | Secondary output circuit of transformer, switching power supply circuit and air conditioner |
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2021
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396509A (en) * | 2001-07-05 | 2003-02-12 | Lg电子株式会社 | Power supply of central processing unit |
| CN101752900A (en) * | 2008-12-17 | 2010-06-23 | 索尼爱立信移动通信日本株式会社 | Power supply system and electronic instrument |
| CN110299171A (en) * | 2018-03-22 | 2019-10-01 | 东芝存储器株式会社 | Control method in storage system, power control circuit and storage system |
| US10545523B1 (en) * | 2018-10-25 | 2020-01-28 | Qualcomm Incorporated | Adaptive gate-biased field effect transistor for low-dropout regulator |
| CN110971108A (en) * | 2019-12-30 | 2020-04-07 | 珠海格力电器股份有限公司 | Secondary output circuit of transformer, switching power supply circuit and air conditioner |
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