TWI776427B - Switching power supply system and method thereof - Google Patents

Abstract

A switching power supply system is disclosed in the present invention. The switching power supply system includes a power supply unit, a first monitoring and protecting chip, a power switch, a second monitoring and protecting chip, a third monitoring and protecting chip, at least one first functional module, at least one second functional module, and a plurality of fans. The second functional module is utilized to operate at a S5 state. The fans are utilized to receive a standby power and operate at a lower power. The first functional module is utilized to operate at a S0 state. The fans are utilized to receive the standby power and part of a power-on power and operate at a higher power.

Description

Switched power supply system and method thereof

The present invention relates to a system and method, in particular to a switching power supply system and method.

With the development of science and technology, the application of server system is also more extensive. The server system is also constantly updated and optimized according to the different application fields of various companies or users to meet different usage requirements and cooling requirements. The server system usually has six states from S0 to S5. Among them, the S0 state is the normal operation state of the startup, and the S5 state is the shutdown state. It should be noted that the S5 state refers to the shutdown state, which means that the server system is turned off and the plug is inserted The status on the socket indicates that although the server system is shut down, it still receives the utility power provided by the socket.

In different usage requirements, the types of components in the server system will also be different, the number will also increase, the timing of use will also be different, and the heat dissipation requirements will also be different. For example, some components may There are usage requirements to operate in S5 state, fans may need to run at higher power, etc.

However, in the prior art, the fan usually receives standby power from a monitoring and protection chip together with some components, and another part of the components receives power-on power from another monitoring and protection chip. When the monitoring and protection chip is abnormal and the server system is turned on, Not only does the fan fail to run, but it can also cause the server system to overheat, fail to operate, or even be damaged. In addition, in the prior art, fans are also divided into two types: fans that receive startup power and fans that receive standby power, although this can be done differently. The heat dissipation requirements and different operating powers also cause problems such as an increase in the number of fans, an increase in costs, and an increase in the space occupied. Therefore, there is room for improvement in the prior art.

In view of the prior art, the server system needs to respond to different usage requirements, heat dissipation requirements, power supply requirements and other issues. One of the main objectives of the present invention is to provide a switching power supply system for solving at least one problem in the prior art.

In order to solve the problems of the prior art, the present invention adopts the necessary technical means to provide a switching power supply system, which is applied to a server system and includes a power supply unit, a first monitoring and protection chip, a power integration circuit, and a A second monitoring and protection chip, a third monitoring and protection chip, at least one first function module, at least one second function module and a plurality of fans. The power supply unit provides a standby power when the server system is in a shutdown state, and provides a power-on power when the server system is in a power-on state. The first monitoring and protection chip is electrically connected to the power supply unit, and is used for receiving power-on power in the power-on state. The power integration circuit is electrically connected to the power supply unit, and is used for receiving standby power in a shutdown state; and receiving standby power and a part of the power-on power in a power-on state.

The second monitoring and protection chip is electrically connected to the power integration circuit, and is used for receiving standby power in a shutdown state; and receiving standby power and a part of the power-on power in a power-on state. The third monitoring and protection chip is electrically connected to the power integration circuit, and is used for receiving standby power when in a shutdown state; and receiving standby power and part of the power-on power in a power-on state. The first functional module is electrically connected to the first monitoring and protection chip, and is used for receiving power-on power and operating in a power-on state. The second function module is electrically connected to the third monitoring and protection chip, and is used for receiving standby power and operating in a shutdown state; and is used for receiving standby power and a part of the startup power and operating in a power-on state. The fan is electrically connected to the second monitoring and protection chip, and is used for receiving standby power in the off state and running at a standby power; in the power-on state, it receives the standby power and part of the power on, and operates at a normal power higher than the standby power run.

On the basis of the above necessary technical means, an auxiliary technical means derived from the present invention is to use the ADM1278 chip as the first monitoring and protection chip in the switching power supply system.

On the basis of the above necessary technical means, an auxiliary technical means derived from the present invention is to use the MP5023 chip as the second monitoring and protection chip in the switching power supply system.

On the basis of the above necessary technical means, an auxiliary technical means derived from the present invention is to use the MP5023 chip as the third monitoring and protection chip in the switching power supply system.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that one of the first functional modules in the switching power supply system is a central processing unit.

On the basis of the above necessary technical means, an auxiliary technical means derived from the present invention is to make one of the first functional modules in the switchable power supply system be a memory module.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that one of the second functional modules in the switching power supply system is a baseboard management controller.

On the basis of the above necessary technical means, an auxiliary technical means derived from the present invention is to make one of the second functional modules in the switching power supply system a complex programmable logic device.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention is to provide a switchable power supply method, which is implemented by using the above-mentioned switchable power supply system, and includes the following steps: using the power supply unit, in the server When the system is in the shutdown state, the standby power is provided; the power integration circuit is used to receive the standby power; the third monitoring protection chip is used to receive and transmit the standby power to the at least one second functional module; the second monitoring protection is used The chip receives and transmits the standby power to the fan, and makes the fan operate with the standby power; using the power supply unit, additionally provides the power-on power when the server system is switched from the off state to the on state; using the first power The monitoring and protection chip receives and transmits the power-on power to the at least one first functional module; additionally receives part of the power-on power by using the power integration circuit; and uses the second monitoring and protection chip to additionally receive and transmit the above-mentioned part of the power-on power to the fan, and run the fan at this normal power.

Based on the above, the switching power supply system and method provided by the present invention utilizes the power supply unit, the first monitoring and protection chip, the power integration circuit, the second monitoring and protection chip, the third monitoring and protection chip, the first functional module, The second functional module and the fan, compared with the prior art, the present invention utilizes the third monitoring and protection chip, so that the second functional module can operate in a shutdown state, and utilizes the first monitoring and protection chip, so that the first functional module is It only starts to operate in the power-on state. The second monitoring and protection chip is used to electrically connect the fan, so that the power supply of the fan and other modules are separated and will not be affected by other modules. It can be smoothly boosted to run at normal power.

The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagrams. The advantages and features of the present invention will become more apparent from the following description and the scope of the claims. It should be noted that the drawings are all in a very simplified form and use inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

Please refer to the first figure and the second figure, wherein, the first figure shows a block diagram of the switching power supply system provided by the preferred embodiment of the present invention; and, the second figure shows the preferred embodiment of the present invention. The flow chart of the switching power supply method. As shown in the figure, a switchable power supply method is implemented using a switchable power supply system 1, and includes the following steps S101 to S110.

The switching power supply system 1 is applied to a server system, and includes a power supply unit 11, a first monitoring and protection chip 12, a power integration circuit 13, a second monitoring and protection chip 14, a third monitoring and protection chip 15, At least one first functional module 16a, 16b, 16c (drawn in the drawing and marked with three symbols), at least one second functional module 17a, 17b, 17c (drawn in the drawing and marked with three symbols) and a plurality of fans 18 (schematically draw three and label one schematic). It should be noted that the application of the switchable power supply system 1 to the server system does not mean that the switchable power supply system 1 must be externally connected to the server system, and the switchable power supply system 1 may also be included in the server system.

The power supply unit 11 is electrically connected to the first monitoring and protection chip 12 and the power integration circuit 13 . The first monitoring and protection chip 12 is electrically connected to the first functional modules 16a, 16b, and 16c. The power integration circuit 13 is electrically connected to the second monitoring and protection chip 14 and the third monitoring and protection chip 15 . The second monitoring and protection chip 14 is electrically connected to the fan 18 . The third monitoring and protection chip 15 is electrically connected to the second functional modules 17a, 17b, 17c.

Step S101: Check whether the server system is in a shutdown state.

Determines whether the server system is in a shutdown state. The shutdown state here refers to the S5 state, which means that the server system is turned off and the plug is inserted into the socket. It means that although the server system is shut down, there is still a receiving socket. Mains electricity. When the result of step S101 is yes, the process goes to step S102; when the result of step S101 is no, the process goes to step S101 again.

Step S102: Use the power supply unit to provide standby power.

The power supply unit 11 provides a standby power when the server system is in a shutdown state. Standby power, also referred to as reserve power and backup power, refers to a kind of power delivered by the power supply unit 11 when the plug of the server system is plugged into the socket and not turned on.

Step S103 : using the power integration circuit to receive standby power.

The power integration circuit 13 receives standby power from the power supply unit 11 when the server system is in a shutdown state.

Step S104 : using the third monitoring and protection chip to receive the standby power, and transmit the power to the second functional module, so that the second functional module receives the standby power and operates.

The third monitoring and protection chip 15 receives standby power from the power integration circuit 13 and transmits it to the second functional modules 17a, 17b, and 17c. Therefore, the second functional modules 17a, 17b, 17c can operate when the server system is in a shutdown state. For example, the second functional module 17a may be a Baseboard Management Controller (BMC), the second functional module 17b may be a Complex Programmable Logic Device (CPLD), and the second functional module 17b may be a complex programmable logic device (CPLD). The module 17c can be other modules that need to be operated in a shutdown state. In this embodiment, the third monitoring and protection chip 15 is an MP5023 chip, which is used to monitor the current flowing and power consumption, and has the function of Over Current Protection (OCP).

Step S105 : using the second monitoring protection chip to receive the standby power and transmit it to the fan, so that the fan receives the standby power and operates with the standby power.

The second monitoring and protection chip 14 receives standby power from the power integration circuit 13 and transmits it to the fan 18 . Therefore, the fan 18 can operate at standby power when the server system is shut down. Since only the second functional modules 17a, 17b, and 17c can operate normally when the server system is in a shutdown state, the fan 18 operating at standby power can not only solve the heat dissipation requirements of the second functional modules 17a, 17b, and 17c , and there will be no problem of excessive waste of power. In practice, the standby power of the fan 18 usually means that the duty cycle of the PWM is between 15% and 25%.

In this embodiment, the second monitoring and protection chip 14 can also use an MP5023 chip, which is used to monitor the flowing current and power consumption, and has the function of Over Current Protection (OCP).

Step S106 : whether the server system is switched to the power-on state.

Determine whether the server system is switched to the power-on state, and the power-on state here is the S0 state. When the result of step S106 is yes, it means that the server system is in a normal operation state, that is, all components of the server system start to operate, then step S107 is entered; when the result of step S106 is no, step S106 is entered again.

Step S107 : using the power supply unit to additionally provide power-on power.

The power supply unit 11 additionally provides a power-on power when the server system is in a power-on state. Power-on power, also referred to as main power, normal power, or “real power” in the industry, refers to a type of power transmitted by the power supply unit 11 after the server system is powered on.

Step S108 : using the first monitoring protection chip to receive the power-on power and transmit the power to the first functional module, so that the first functional module receives the power-on power and operates.

The first monitoring and protection chip 12 receives power-on power from the power supply unit 11 when the server system is turned on, and transmits the power to the first functional modules 16a, 16b, and 16c. Therefore, the first functional modules 16a, 16b, 16c start to operate when the server system is powered on. For example, the first functional module 16a may be a Central Processing Unit (CPU), the first functional module 16b may be a Dual In-line Memory Module (DIMM), and the first functional module 16b may be a dual in-line memory module (DIMM). The module 16c may be other modules that start to operate only when the module is powered on.

In this embodiment, the first monitoring and protection chip 12 adopts an ADM1278 chip, which is used to monitor the current flowing and power consumption, and has the function of Over Current Protection (OCP). Because the power of the power-on power is higher than the standby power, the maximum current that the first monitoring and protection chip 12 can withstand is greater than that of the second monitoring and protection chip 14 and the third monitoring and protection chip 15 .

Step S109 : using the power integration circuit to additionally receive part of the power-on power.

The power integration circuit 13 additionally receives part of the power-on power from the power supply unit 11 when the server system is in a power-on state. At this time, the power integration circuit 13 still receives standby power.

Step S110: Using the second monitoring protection chip to additionally receive part of the power-on power and transmit it to the fan, so that the fan can receive the standby power and part of the power-on power to operate at normal power when the fan is powered on.

The second monitoring and protection chip 14 additionally receives part of the power-on power and standby power from the power integration circuit 13 and transmits it to the fan 18 . Therefore, the fan 18 can be boosted to run at a normal power higher than the standby power when the server system is on. Since the first functional modules 16a, 16b, 16c and the second functional modules 17a, 17b, 17c all operate normally when the server system is turned on, the fan 18 is boosted to operate at normal power, which can solve the problem of the first functional module. The heat dissipation requirement required for the groups 16a, 16b, 16c and the second functional modules 17a, 17b, 17c to operate simultaneously. In practice, the normal power of the fan 18 usually means that the duty cycle of the PWM is at least 50%.

With the increasing heat dissipation demand, the number of fans 18 is also increasing. Therefore, the power integration circuit 13 additionally receives and transmits a part of the power-on power from the power supply unit 11, which also helps to allow the increased number of fans 18 to operate smoothly. Boost to run at normal power. In practice, the power integration circuit 13 usually includes at least one Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET), and can make the transmitted standby power and part of the power-on power reach 50 amps.

The second monitoring and protection chip 14 is independently electrically connected to the power integration circuit 13 and the fan 18, so as to be separated from other modules (the first functional modules 16a, 16b, 16c and the second functional modules 17a, 17b, 17c). Power supply behavior, to avoid the failure of other modules (the first monitoring and protection chip 12, the third monitoring and protection chip 15, the first functional modules 16a, 16b, 16c and the second functional modules 17a, 17b, 17c) that cannot operate due to abnormality question.

In summary, the switching power supply system and method provided by the present invention utilizes the power supply unit, the first monitoring and protection chip, the power integration circuit, the second monitoring and protection chip, the third monitoring and protection chip, the first functional module, The second functional module and the fan, compared with the prior art, the present invention utilizes the third monitoring and protection chip, so that the second functional module can operate in a shutdown state, and utilizes the first monitoring and protection chip, so that the first functional module is It only starts to operate in the power-on state. The second monitoring and protection chip is used to electrically connect the fan, so that the power supply of the fan and other modules are separated and will not be affected by other modules. It can be smoothly boosted to run at normal power. In addition, the usability of the switching power supply system provided by the present invention is more flexible, and can also be applied to more different usage requirements.

Through the detailed description of the preferred embodiments above, it is hoped that the features and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various modifications and equivalent arrangements within the scope of the claimed scope of the present invention.

1: Switched power supply system 11: Power supply unit 12: The first monitoring and protection chip 13: Power integration circuit 14: The second monitoring and protection chip 15: The third monitoring protection chip 16a, 16b, 16c: The first function module 17a, 17b, 17c: Second function module 18: Fan

The first figure is a block diagram showing the switching power supply system provided by the preferred embodiment of the present invention; and The second figure is a flow chart showing the switching power supply method provided by the preferred embodiment of the present invention.

1: Switched power supply system

11: Power supply unit

12: The first monitoring and protection chip

13: Power integration circuit

14: The second monitoring and protection chip

15: The third monitoring protection chip

16a, 16b, 16c: The first function module

17a, 17b, 17c: Second functional module

18: Fan

Claims (9)

A switching power supply system is applied to a server system, and includes: a power supply unit, which provides a standby power when the server system is in a shutdown state, and provides a power-on power when the server system is in a power-on state; a first monitoring and protection chip electrically connected to the power supply unit for receiving the power-on power in the power-on state; a power integration circuit electrically connected to the power supply unit for receiving the standby power in the off state; receiving the standby power and a part of the boot power in the on state; a second monitoring and protection chip, electrically connected to the power integration circuit, for receiving the standby power in the off state; receiving the standby power and a part of the boot power in the on state; a third monitoring and protection chip, electrically connected to the power integration circuit, for receiving the standby power in the off state; receiving the standby power and a part of the boot power in the on state; At least one first function module is electrically connected to the first monitoring and protection chip, and is used for receiving the power-on power and operating in the power-on state; At least one second function module is electrically connected to the third monitoring and protection chip for receiving the standby power and operating in the shutdown state; for receiving the standby power and a part of the power-on power in the power-on state and operate; and A plurality of fans are electrically connected to the second monitoring and protection chip for receiving the standby power in the off state and running with a standby power; in the on state, receiving the standby power and a part of the boot power, and operates at a normal power higher than the standby power. The switching power supply system according to claim 1, wherein the first monitoring and protection chip is an ADM1278 chip. The switching power supply system according to claim 1, wherein the second monitoring and protection chip is an MP5023 chip. The switching power supply system according to claim 1, wherein the third monitoring and protection chip is an MP5023 chip. The switching power supply system according to claim 1, wherein one of the at least one first functional module is a central processing unit. The switching power supply system of claim 1, wherein one of the at least one first functional module is a memory module. The switching power supply system of claim 1, wherein one of the at least one second functional module is a baseboard management controller. The switching power supply system of claim 1, wherein one of the at least one second functional module is a complex programmable logic device. A switching power supply method is implemented using the switching power supply system as described in claim 1, and includes the following steps: (a) using the power supply unit to provide the standby power when the server system is in the shutdown state; (b) utilizing the power integration circuit to receive the standby power; (c) using the third monitoring protection chip to receive and transmit the standby power to the at least one second functional module; (d) using the second monitoring protection chip to receive and transmit the standby power to the fans, and make the fans operate at the standby power; (e) using the power supply unit to additionally provide the power-on power when the server system is switched from the power-off state to the power-on state; (f) using the first monitoring protection chip to receive and transmit the power-on power to the at least one first functional module; (g) utilizing the power integration circuit to additionally receive part of the start-up power; (h) using the second monitoring protection chip to additionally receive and transmit the above-mentioned part of the power-on power to the fans, and make the fans run at the normal power.

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