CN111580635A - Overpower protection circuit and method applied to PC input power supply - Google Patents
Overpower protection circuit and method applied to PC input power supply Download PDFInfo
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- CN111580635A CN111580635A CN202010255715.7A CN202010255715A CN111580635A CN 111580635 A CN111580635 A CN 111580635A CN 202010255715 A CN202010255715 A CN 202010255715A CN 111580635 A CN111580635 A CN 111580635A
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- G06—COMPUTING; CALCULATING OR COUNTING
- 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
Abstract
The invention discloses an over-power protection circuit and method applying a PC input power supply. The over-power protection circuit using the PC input power supply comprises: the over-power protection chip, the power supply, the controller and the power adapter; the power supply is connected to the controller through a system management bus, and the controller adjusts the current value or the voltage value of the power supply through signals of the system management bus; the power adapter is connected to the controller, and the controller detects parameters of the power adapter; the power adapter is connected to the over-power protection chip, and the over-power protection chip acquires a current value or a voltage value flowing through the power adapter; the power supply is connected to the over-power protection chip and provides a current value or a voltage value corresponding to the maximum power which can be carried by the power adapter to the over-power protection chip.
Description
Technical Field
The invention relates to the field of circuit protection, in particular to an over-power protection circuit and method applied to a PC input power supply.
Background
With the increasing demands of computer users, the computer is required to have strong compatibility and expandability, and a computer motherboard is often required to be matched with various expanded input/output (IO) devices, so that the whole computer has different power consumption, and therefore power adapters with different power values are required to supply power to systems with different configurations. The load capacity of power adapters with different power values is limited, and if the Current range of the allowed load is exceeded, overcurrent Protection (Over Current Protection) can be triggered to cause system shutdown. Therefore, different maximum currents of the allowed loads need to be set for the power adapters with different power values, that is, different Over-power Protection points (Over budget power Protection) are set, and when the current of the load exceeds the set Over-power Protection points, a Central Processing Unit (CPU) is notified to reduce the operating frequency, so as to reduce the power consumption of the system, thereby reducing the output current of the power adapter, and thus avoiding the system from being turned off.
Fig. 1 illustrates a prior art over-power protection circuit for a power adapter for a plurality of different power values. As shown in fig. 1, the APL3573B in the circuit is a chip with a current limiting function. The chip has an ALSET PIN (PIN) which provides a current of 10uA to the outside, and the current flows through the ALSET PIN and is externally connected to resistors R with different resistance valuesALSETBy applying a resistance RALSETGrounding, i.e. obtaining different voltage values VALSET. When the controller (EC) detects the insertion of a power adapter with different power values, the controller (EC) passes the control ID0、ID1、ID2、 ID3、ID4To control the switch Q, of the 0, 1 state of a general purpose input/output port (GPIO) signal0、Q1、Q2、Q3、Q4To open or closed state of the resistor R, thereby controlling the resistance RALSETThe resistance value of the power adapter is obtained, and different voltage values V corresponding to the over-power protection points of the power adapter with different power values are finally obtainedALSET. When the APL3573B chip calculates that the Current flowing through the system end exceeds the Over-power Protection point set by the power adapter, the APL3573B chip transmits the signal to the controller (EC), and the controller (EC) informs the Central Processing Unit (CPU) to reduce the operating frequency, so that the power consumption of the system is reduced, and the problem that the Over-Current Protection (Over Current Protection) of the power adapter is triggered and the system is closed due to continuous high power consumption of the system end is avoided.
However, as the compatibility and expansibility of the computer are continuously enhanced and increased, the collocation configuration of the computer motherboard is more and more, and for example, a common motherboard needs 7 configurations, then 7 adapters need to be set for the power adapterThe same over-power protection point. With the above prior art, the controller (EC) needs to provide at least 6 general purpose input/output ports (GPIO) to control the resistor RALSETThe resistance value of (2) is large, which means that 6 GPIO pins are required to be punched to make signals routed from the EC to the data acquisition end, and for an integrated circuit board with a small space, the space for routing the circuit layout is severely limited. In addition, the prior art determines different voltage values V corresponding to the over-power protection points of the power adapter with different power valuesALSETThe required resistance is excessive and the switch also needs to be debugged, which results in a significant increase in the number of components on the entire motherboard. Finally, the prior art uses too many GPIO pins that require EC control, which can cause certain loading difficulties.
Disclosure of Invention
The present invention has been made to solve at least one of the above problems, and it is an object of the present invention to provide an overpower protection circuit and method applied to a PC input power supply.
According to a first aspect of the embodiments of the present invention, there is provided an over-power protection circuit using a PC input power supply, including: the over-power protection chip, the power supply, the controller and the power adapter; the power supply is connected to the controller through a system management bus, and the controller adjusts the current value or the voltage value of the power supply through signals of the system management bus; the power adapter is connected to the controller, and the controller detects parameters of the power adapter; the power adapter is connected to the over-power protection chip, and the over-power protection chip acquires a current value or a voltage value flowing through the power adapter; the power supply is connected to the over-power protection chip and provides a current value or a voltage value corresponding to the maximum power which can be borne by the power adapter for the over-power protection chip.
According to an embodiment of the present invention, the over-power protection circuit further includes a configuration circuit, the power source is a current source, and the current source is connected to the over-power protection chip through the configuration circuit, wherein the configuration circuit includes a first configuration resistor and a second configuration resistor, the current source is connected between the first configuration resistor and the second configuration resistor, the other end of the first configuration resistor is connected to the over-power protection chip, and the other end of the second configuration resistor is grounded.
According to an embodiment of the present invention, the power source is a digital-to-analog converter chip NCT 3933U.
According to an embodiment of the invention, the model of the over-power protection chip is APL 3573B.
According to an embodiment of the present invention, the controller is an embedded controller.
According to a second aspect of the embodiments of the present invention, there is provided an over-power protection method using a PC input power supply, the method including the steps of: detecting a parameter of a power adapter by using a controller, wherein the power adapter is connected to the controller; adjusting the current value or the voltage value of a power supply by using the controller according to the detected parameter of the power adapter, wherein the power supply is connected to the controller through a system management bus; providing a current value or a voltage value corresponding to the maximum power which can be carried by the power adapter to an over-power protection chip by using the power supply, wherein the power supply is connected to the over-power protection chip; and acquiring a current value or a voltage value flowing through the power adapter by using the over-power protection chip, wherein the power adapter is connected to the over-power protection chip.
According to an embodiment of the invention, the method further comprises the steps of: the over-power protection chip judges whether the current value or the voltage value flowing through the power adapter exceeds the current value or the voltage value corresponding to the maximum power which can be borne by the power adapter, if so, the over-power protection chip generates an overload signal and transmits the overload signal to the controller, and if not, the over-power protection chip does not generate the overload signal; and after the controller receives the overload signal transmitted by the over-power protection chip, the controller sends a frequency reduction signal to the central processing unit for reducing the working frequency of the central processing unit.
According to an embodiment of the present invention, the power source is a digital-to-analog converter chip NCT 3933U.
According to an embodiment of the invention, the model of the over-power protection chip is APL 3573B.
According to an embodiment of the present invention, the controller is an embedded controller.
Compared with the prior art, the circuit provided by the embodiment of the invention can greatly reduce the number of elements on the mainboard, saves the design space of a circuit layout, realizes the digital adjustment of the overpower protection point of the power adapter, and solves the problem that the required overpower protection point cannot be adjusted due to the limitation of the resistance value of a resistor.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
FIG. 1 illustrates a prior art over-power protection circuit for a power adapter for a plurality of different power values;
FIG. 2 is a schematic diagram of an embodiment of an over-power protection circuit using a PC input power supply according to the present invention;
FIG. 3 is a circuit diagram illustrating another embodiment of an over-power protection circuit using a PC input power supply according to the present invention;
FIG. 4 is a circuit diagram showing a further embodiment of the over-power protection circuit of the present invention using a PC input power supply;
FIG. 5 is a flow diagram illustrating one embodiment of an over-power protection method of the present invention using a PC input power supply.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, a schematic diagram of an embodiment of an over-power protection circuit using a PC input power according to the present invention is shown.
As shown in fig. 2, the over-power protection circuit applied to the PC input power supply of the embodiment of the present invention includes: an over-power protection chip (OBP IC), a power supply, a controller, a power adapter ("adapter" in fig. 2). The power supply is connected to the controller through the system management bus, and the controller adjusts the current value or the voltage value of the power supply through signals of the system management bus. The power adapter is connected to the controller, and the controller detects a parameter (ID) of the power adapter. The power adapter is connected to an over-power protection chip that obtains a value of current or voltage flowing through the power adapter. The power supply is connected to the over-power protection chip and provides the over-power protection chip with a current value or a voltage value corresponding to the maximum power which can be carried by the power adapter. As a preferred embodiment, a current value or a voltage value provided by the power supply and corresponding to the maximum power that can be carried by the power adapter can be converted into an overvoltage protection point (V) of the power adapter by a configuration circuit (not shown in FIG. 2)LIMIT). The embodiment of the invention greatly reduces the number of components on the mainboard, saves the design space of a circuit layout, realizes the digital adjustment of the over-power protection point of the power adapter, and solves the problem that the required over-power protection point cannot be adjusted due to the limitation of the resistance value of the resistor.
Fig. 3 is a circuit configuration diagram showing another embodiment of the over-power protection circuit of the present invention using the PC input power. As shown in fig. 3, the over-power protection circuit further includes a configuration circuit, preferably, the power source is a current source, the current source is connected to the over-power protection chip (OBP IC in fig. 3) through the configuration circuit, wherein the configuration circuit includes a first configuration resistor (PR1) and a second configuration resistor (PR2), the current source is connected between the first configuration resistor and the second configuration resistor (i.e., terminal 1 of the first configuration resistor and terminal 2 of the second configuration resistor are connected to the current source), the other terminal of the first configuration resistor (i.e., terminal 2 of the first configuration resistor) is connected to the over-power protection chip, and the other terminal of the second configuration resistor (i.e., terminal 1 of the second configuration resistor) is grounded. As a preferred embodiment, the LIMIT pin of the over-power protection chip OBP IC externally provides a constant current value I1, and the 2 terminal of the first configuration resistor is connected to the LIMIT pin of the over-power protection chip. Taking the current source providing a constant current value I2, the calculation formula of the over-voltage protection point VLIMIT of the power adapter is: VLIMIT ═ (I1+ I2) × R2+ I1 × R1. In this embodiment, the overvoltage protection point VLIMIT of the power adapter can be set to different values by changing the current value I2 of the current source, which is a complicated process.
As a preferred embodiment, as shown in fig. 3, the over-power protection circuit of the embodiment of the present invention using the PC input power supply further includes a configuration resistor PR3, wherein the configuration resistor PR3 is connected to the current sensing pins ISENN and ISENP of the over-power protection chip, respectively, and the pins ISENN and ISENP correspond to the cathode (-) input pin and the anode (+) input pin of the current sensing, respectively. The general over-power protection chip integrates a resistor for measuring current flowing through a system end in the chip, but the internal temperature of the chip is high during operation, which affects the accuracy of calculating the voltage value of the resistor for measuring the current flowing through the system end, and the current value flowing through the system end can be calculated more accurately by externally connecting the configuration resistor PR3 to the over-power protection chip, so that the problem of low calculation accuracy of the current value flowing through the system end due to the over-high temperature during the operation of the chip is solved.
Fig. 4 is a circuit configuration diagram showing still another embodiment of the over-power protection circuit of the present invention using the PC input power. As shown in fig. 4, in the embodiment of the present invention, the power source selects a digital-to-analog converter chip NCT3933U, the model of the over-power protection chip selects APL3573B, and the controller is an Embedded Controller (EC). The NCT3933U chip is a current source originally used for overclocking, it can regulate the current source of drain/source through the System Management Bus (SMBUS) signal, it can provide 0 to + -1270 μ a, and the current value of each step is 10 μ a, totaling 128 steps, and the embodiment of the invention mainly utilizes its source function. First, PR1 is set to 68K Ω, PR2 is set to 2K Ω in fig. 4, and the initial over-power protection point of the power adapter is set to the current limit point 3.5A, so that the following data table is obtained:
| I2/μA | VALSET/volt (v) | Current limit point/ampere (A) |
| 0 | VALSET＝(I1+I2)×R2+I1×R1＝0.7 | 3.5 |
| 10 | VALSET＝(I1+I2)×R2+I1×R1＝0.72 | 3.6 |
| 20 | VALSET＝(I1+I2)×R2+I1×R1＝0.74 | 3.7 |
| 30 | VALSET＝(I1+I2)×R2+I1×R1＝0.76 | 3.8 |
| 40 | VALSET＝(I1+I2)×R2+I1×R1＝0.78 | 3.9 |
Compared with the prior art (in the prior art, 6 resistors are used to realize 7 bit levels), the embodiment of the invention realizes the intelligent digital adjustment of the overpower protection point of the power adapter, can realize the adjustment of the 0.1A first-order current point (corresponding to the overpower protection point of the power adapter) without changing hardware, can realize the smooth adjustment of the current limit point (corresponding to the overpower protection point of the power adapter) of the power adapter, and provides great convenience for the adjustment and debugging (debug) of the performance of the mainboard. In addition, since the controller is an Embedded Controller (EC), for the EC, the present embodiment may share a pair of SMBUS communication channels with other devices, as long as it is ensured that the slave address is not the same as that of the other devices, and at least 6 general purpose input/output (GPIO) ports may be saved for the EC; meanwhile, in the prior art, the EC needs to detect 6 GPIOs one by one, so that much time is needed, and the embodiment does not need the EC to spend time to detect the general purpose input/output (GPIO) ports, thereby reducing the load of the EC.
FIG. 5 is a flow diagram illustrating one embodiment of an over-power protection method of the present invention using a PC input power supply. As shown in fig. 5, the method comprises the steps of: detecting a parameter of a power adapter (i.e., "adapter ID") with a controller, wherein the power adapter (i.e., "adapter" in fig. 5) is connected to the controller; adjusting the current value or the voltage value of a power supply by using the controller according to the detected parameters of the power adapter, wherein the power supply is connected to the controller through a system management bus; providing a current value or a voltage value corresponding to the maximum power which can be carried by the power adapter to an over-power protection chip by using the power supply, wherein the power supply is connected to the over-power protection chip; and acquiring a current value or a voltage value flowing through the power adapter by using the over-power protection chip, wherein the power adapter is connected to the over-power protection chip.
According to one embodiment of the present invention, the method for protecting an input power of a PC from an over-power condition further comprises the steps of: the over-power protection chip judges whether the current value or the voltage value flowing through the power adapter exceeds the current value or the voltage value corresponding to the maximum power which can be borne by the power adapter, if so, the over-power protection chip generates an overload signal and transmits the overload signal to the controller, and if not, the over-power protection chip does not generate the overload signal; and after the controller receives the overload signal transmitted by the over-power protection chip, the controller sends a frequency reduction signal to the central processing unit for reducing the working frequency of the central processing unit.
According to one embodiment of the invention, an over-power protection method for a PC input power supply is applied, wherein the power supply is a digital-to-analog converter chip NCT 3933U.
According to an embodiment of the invention, the model of the over-power protection chip is APL 3573B.
According to an embodiment of the present invention, the controller is an embedded controller.
Here, it should be noted that: the above description of the embodiment of the over-power protection method using the PC input power is similar to the description of the protection circuit embodiments shown in fig. 2, 3, and 4, and has similar beneficial effects to the method embodiments shown in fig. 2, 3, and 4, and therefore, the description is not repeated.
The previous description is intended to enable any person skilled in the art to make and use the disclosure, and is provided in the context of a particular application and its requirements. Furthermore, the foregoing descriptions of embodiments of the present disclosure are presented only for purposes of illustration and description. They are not intended to be exhaustive or to limit the disclosure to the forms disclosed. Thus, many modifications and variations will be apparent to practitioners skilled in the art, and the generic principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Furthermore, the discussion of the preceding embodiments is not intended to limit the present disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Claims (10)
1. An over-power protection circuit using a PC input power supply, comprising: the over-power protection chip, the power supply, the controller and the power adapter; the power supply is connected to the controller through a system management bus, and the controller adjusts the current value or the voltage value of the power supply through signals of the system management bus; the power adapter is connected to the controller, and the controller detects parameters of the power adapter; the power adapter is connected to the over-power protection chip, and the over-power protection chip acquires a current value or a voltage value flowing through the power adapter; the power supply is connected to the over-power protection chip and provides a current value or a voltage value corresponding to the maximum power which can be carried by the power adapter to the over-power protection chip.
2. The overpower-protection circuit applied with a PC input power supply of claim 1, further comprising a configuration circuit, wherein the power supply is a current source, and the current source is connected to the overpower-protection chip through the configuration circuit, wherein the configuration circuit comprises a first configuration resistor and a second configuration resistor, the current source is connected between the first configuration resistor and the second configuration resistor, the other end of the first configuration resistor is connected to the overpower-protection chip, and the other end of the second configuration resistor is grounded.
3. The overpower protection circuit using PC input power of claim 1 or 2, wherein the power is digital-to-analog converter chip NCT 3933U.
4. The overpower protection circuit using the PC input power of claim 1 or 2, wherein the model of the overpower protection chip is APL 3573B.
5. The overpower protection circuit using PC input power of claim 1 or 2, wherein the controller is an embedded controller.
6. An over-power protection method using a PC input power supply, the method comprising the steps of:
detecting a parameter of a power adapter by using a controller, wherein the power adapter is connected to the controller;
adjusting the current value or the voltage value of a power supply by using the controller according to the detected parameter of the power adapter, wherein the power supply is connected to the controller through a system management bus;
providing a current value or a voltage value corresponding to the maximum power which can be carried by the power adapter to an over-power protection chip by using the power supply, wherein the power supply is connected to the over-power protection chip;
and acquiring a current value or a voltage value flowing through the power adapter by using the over-power protection chip, wherein the power adapter is connected to the over-power protection chip.
7. The method of claim 6, further comprising the steps of:
the over-power protection chip judges whether the current value or the voltage value flowing through the power adapter exceeds the current value or the voltage value corresponding to the maximum power which can be borne by the power adapter, if so, the over-power protection chip generates an overload signal and transmits the overload signal to the controller, and if not, the over-power protection chip does not generate the overload signal;
and after the controller receives the overload signal transmitted by the over-power protection chip, the controller sends a frequency reduction signal to the central processing unit for reducing the working frequency of the central processing unit.
8. The method of claim 6, wherein the power supply is a digital-to-analog converter chip NCT 3933U.
9. The method of claim 6, wherein the model of the over-power protection chip is APL 3573B.
10. The method of claim 6, wherein the controller is an embedded controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010255715.7A CN111580635A (en) | 2020-04-02 | 2020-04-02 | Overpower protection circuit and method applied to PC input power supply |
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| CN202010255715.7A CN111580635A (en) | 2020-04-02 | 2020-04-02 | Overpower protection circuit and method applied to PC input power supply |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268144A (en) * | 2013-06-07 | 2013-08-28 | 张宁 | Power monitoring device and overcurrent protection method |
| CN104331141A (en) * | 2013-07-22 | 2015-02-04 | 纬创资通股份有限公司 | Overcurrent protection circuit and server thereof |
| CN107239129A (en) * | 2017-06-28 | 2017-10-10 | 联想(北京)有限公司 | The power control method and device of a kind of electronic equipment |
| US20190319545A1 (en) * | 2018-04-13 | 2019-10-17 | Wistron Corporation | Hub device and power supply method thereof |
-
2020
- 2020-04-02 CN CN202010255715.7A patent/CN111580635A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268144A (en) * | 2013-06-07 | 2013-08-28 | 张宁 | Power monitoring device and overcurrent protection method |
| CN104331141A (en) * | 2013-07-22 | 2015-02-04 | 纬创资通股份有限公司 | Overcurrent protection circuit and server thereof |
| CN107239129A (en) * | 2017-06-28 | 2017-10-10 | 联想(北京)有限公司 | The power control method and device of a kind of electronic equipment |
| US20190319545A1 (en) * | 2018-04-13 | 2019-10-17 | Wistron Corporation | Hub device and power supply method thereof |
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