CN104679197A - Overflowing protecting system and method - Google Patents

Abstract

The invention provides an overflowing protecting system. The system comprises a power controller, a CPU and a plurality of phase power supply circuits; the power controller comprises a control unit, a storing unit, a detecting unit and a comparing unit; the control unit controls the power supply circuit to work; the storing unit stores a reference value of the current of each phase power supply circuit; the detecting unit detects the current value of each phase power supply circuit and outputs the detected current value to the comparing unit; the comparing unit compares the detected current value of each phase power supply circuit with the corresponding reference value and sends a first signal to the control unit if the detected current value of some phase power supply circuit is more than the corresponding reference value; after receiving the first signal, the control unit controls the power supply circuit of which the detected current value is more than the corresponding reference value to stop working. According to the overflowing protecting system, overflowing protection is performed for each phase power supply circuit. The invention further provides an overflowing protecting method.

Description

Over Current Protection System and method

Technical field

The present invention relates to a kind of Over Current Protection System and method.

Background technology

Server usually adopts heterogeneous feed circuit to equal electronic component to CPU, DDR and powers.Heterogeneous feed circuit general only in total current more than starting protection pattern during a preset value.But; the electric current of each phase of heterogeneous feed circuit is also unequal; when the electric current of a certain phase is excessive and total current does not exceed preset value, heterogeneous feed circuit can not starting protection pattern, so that the element such as field effect transistor and inductance of the excessive feed circuit of electric current is very easily burnt.

Summary of the invention

In view of above content, be necessary to provide a kind of Over Current Protection System all can protected each phase feed circuit in heterogeneous feed circuit.

There is a need to provide a kind of over-current protection method being applied to described Over Current Protection System.

A kind of Over Current Protection System, comprise a power-supply controller of electric, one central processing unit and some phase feed circuit, described power-supply controller of electric comprises a control module, one storage unit, one detecting unit and a comparing unit, described control module and described detecting unit are all connected with described feed circuit, described comparing unit and described control module, described storage unit, described detecting unit and described central processing unit are connected, described feed circuit are connected with described central processing unit, described control module controls described feed circuit work, think that described central processing unit is powered, the reference value of each phase feed circuit electric current of described cell stores, described detecting unit detects the current value of each phase feed circuit, and the current value detected is exported to described comparing unit, the reference value that the current value that each phase feed circuit detects by described comparing unit is corresponding with it compares, and when the current value that a certain phase feed circuit detect is greater than the reference value of its correspondence, send one first signal to described control module and send a secondary signal to described central processing unit, after described control module receives described first signal, the feed circuit that the current value controlling to detect is greater than the reference value of its correspondence quit work, described central processing unit reduces current drain after receiving described secondary signal.

A kind of over-current protection method, comprises the following steps:

A. control the work of some phase feed circuit and think that a central processing unit is powered;

B. the reference value of each phase feed circuit electric current is stored;

C. detect the current value of each phase feed circuit, and the current value detected is exported to a comparing unit;

D. the reference value whether current value that each phase feed circuit detects is greater than its correspondence is compared;

E., when the current value detected when a certain phase feed circuit is greater than the reference value of its correspondence, sends one first signal and send a secondary signal to described central processing unit to described control module;

F., after described control module receives described first signal, the feed circuit that the current value controlling to detect is greater than the reference value of its correspondence quit work; And

G. described central processing unit reduces current drain after receiving described secondary signal.

Over Current Protection System of the present invention and method are by the reference value of each phase feed circuit electric current of described cell stores, and the current value of each phase feed circuit is detected by described detecting unit, the reference value that the current value also detected by each phase feed circuit by described comparing unit is corresponding with it compares, and send a signal to described control module when the current value that a certain phase feed circuit detect is greater than the reference value of its correspondence, the feed circuit being greater than the reference value of its correspondence with the current value making described control module control to detect quit work, thus all overcurrent protection has been carried out to each phase feed circuit.

Accompanying drawing explanation

Fig. 1 is the block scheme of Over Current Protection System better embodiment of the present invention.

Fig. 2 is the process flow diagram of over-current protection method better embodiment of the present invention.

Main element symbol description

Power-supply controller of electric	10
		Control module	12
Storage unit	15
		Detecting unit	16
Comparing unit	18
		CPU	20
First-phase feed circuit	30
		Second-phase feed circuit	40
Third phase feed circuit	50
		Over Current Protection System	100

Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.

Embodiment

Below in conjunction with accompanying drawing and better embodiment, the present invention is described in further detail:

Please refer to Fig. 1, the better embodiment of Over Current Protection System 100 of the present invention comprises power-supply controller of electric 10, CPU(Central Processing Unit, central processing unit) 20 and some phase feed circuit.Described power-supply controller of electric 10 comprises control module 12, storage unit 15, detecting unit 16 and a comparing unit 18.In the present embodiment, only for the first to third phase feed circuit 30-50, the principle of work that described Over Current Protection System 100 is all protected each phase feed circuit is described.In other embodiments, the number of phases of described feed circuit can adjust accordingly according to actual conditions.

Described control module 12 and described detecting unit 16 are all connected with described the first to third phase feed circuit 30-50.Described comparing unit 18 is connected with described control module 12, described storage unit 15, described detecting unit 16 and described CPU 20.Described CPU 20 is connected with described the first to third phase feed circuit 30-50.

During work, described control module 12 controls described the first to third phase feed circuit 30-50 and works, and thinks that described CPU 20 powers.Described storage unit 15 stores the reference value of each phase feed circuit electric current.Described detecting unit 16 detects the current value of each phase feed circuit, and the current value detected is exported to described comparing unit 18.The reference value that the current value that each phase feed circuit detects by described comparing unit 18 is corresponding with it compares, and when the current value that a certain phase feed circuit detect is greater than the reference value of its correspondence, send one first signal to described control module 12 and send a secondary signal to described CPU 20, after described control module 12 receives described first signal, the feed circuit that the current value controlling to detect is greater than the reference value of its correspondence quit work.Current drain is reduced, to maintain the stable work of systems stay after described CPU 20 receives described secondary signal.

Such as, when the current value that described second-phase feed circuit 40 detect is greater than the reference value of the electric current of described second-phase feed circuit 40, described comparing unit 18 sends described first signal to described control module 12 and send described secondary signal to described CPU 20.After described control module 12 receives described first signal, control described second-phase feed circuit 40 and quit work.Current drain is reduced after described CPU 20 receives described secondary signal, after quitting work to make described second-phase feed circuit 40, the electric current that described first-phase feed circuit 30 and third phase feed circuit 50 provide still can meet the demand of system, thus the work making system energy continual and steady.In other embodiments, described the first to third phase feed circuit 30-50 can be other electronic components such as DDR and powers.

Please continue to refer to Fig. 2, the better embodiment that the present invention is applied to the over-current protection method of described Over Current Protection System 100 comprises the following steps:

Step S1, described control module 12 controls described the first to third phase feed circuit 30-50 and works, and thinks that described CPU 20 powers.

Step S2, described storage unit 15 stores the reference value of each phase feed circuit electric current.

Step S3, described detecting unit 16 detects the current value of each phase feed circuit, and the current value detected is exported to described comparing unit 18.

Step S4, described comparing unit 18 compares the reference value whether current value that each phase feed circuit detects is greater than its correspondence, when the current value that each phase feed circuit detects all is not more than the reference value of its correspondence, returns step S3.

Step S5, when the current value that a certain phase feed circuit detect is greater than the reference value of its correspondence, described comparing unit 18 send one first signal to described control module 12 and send a secondary signal to described CPU 20.

Step S6, after described control module 12 receives described first signal, the feed circuit that the current value controlling to detect is greater than the reference value of its correspondence quit work.

Step S7, reduces current drain after described CPU 20 receives described secondary signal.

Over Current Protection System of the present invention and method store the reference value of each phase feed circuit electric current by described storage unit 15, and the current value of each phase feed circuit is detected by described detecting unit 16, the reference value that the current value also detected by each phase feed circuit by described comparing unit 18 is corresponding with it compares, and send a signal to described control module 12 when the current value that a certain phase feed circuit detect is greater than the reference value of its correspondence, the feed circuit being greater than the reference value of its correspondence with the current value making described control module 12 control to detect quit work, thus all overcurrent protection has been carried out to each phase feed circuit.

Claims (3)

1. an Over Current Protection System, comprise a power-supply controller of electric, one central processing unit and some phase feed circuit, described power-supply controller of electric comprises a control module, one storage unit, one detecting unit and a comparing unit, described control module and described detecting unit are all connected with described feed circuit, described comparing unit and described control module, described storage unit, described detecting unit and described central processing unit are connected, described feed circuit are connected with described central processing unit, described control module controls described feed circuit work, think that described central processing unit is powered, the reference value of each phase feed circuit electric current of described cell stores, described detecting unit detects the current value of each phase feed circuit, and the current value detected is exported to described comparing unit, the reference value that the current value that each phase feed circuit detects by described comparing unit is corresponding with it compares, and when the current value that a certain phase feed circuit detect is greater than the reference value of its correspondence, send one first signal to described control module and send a secondary signal to described central processing unit, after described control module receives described first signal, the feed circuit that the current value controlling to detect is greater than the reference value of its correspondence quit work, described central processing unit reduces current drain after receiving described secondary signal.

2. an over-current protection method, comprises the following steps:

A. control the work of some phase feed circuit and think that a central processing unit is powered;

B. the reference value of each phase feed circuit electric current is stored;

C. detect the current value of each phase feed circuit, and the current value detected is exported to a comparing unit;

D. the reference value whether current value that each phase feed circuit detects is greater than its correspondence is compared;

E., when the current value detected when a certain phase feed circuit is greater than the reference value of its correspondence, sends one first signal and send a secondary signal to described central processing unit to described control module;

F., after described control module receives described first signal, the feed circuit that the current value controlling to detect is greater than the reference value of its correspondence quit work; And

G. described central processing unit reduces current drain after receiving described secondary signal.

3. over-current protection method as claimed in claim 2, is characterized in that: further comprising the steps of:

When the current value that each phase feed circuit detects all is not more than the reference value of its correspondence, return step c.