CN1329794C - Switching type power supply system and its method for automatic regulating circuit work frequency - Google Patents

Switching type power supply system and its method for automatic regulating circuit work frequency Download PDF

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Publication number
CN1329794C
CN1329794C CNB2004100625112A CN200410062511A CN1329794C CN 1329794 C CN1329794 C CN 1329794C CN B2004100625112 A CNB2004100625112 A CN B2004100625112A CN 200410062511 A CN200410062511 A CN 200410062511A CN 1329794 C CN1329794 C CN 1329794C
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frequency
unit
inductor
trigger condition
monitoring module
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CN1716157A (en
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邱咏证
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Giga Byte Technology Co Ltd
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Giga Byte Technology Co Ltd
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Abstract

The present invention relates to a switching type electricity supplying system and a method for automatically adjusting the work frequency of a circuit. Through the use state of a real-time detecting computer main machine of an induction monitoring unit and according to a standard set by a user, the switching and working frequency of pulse width modulation PWM carry out automatic adjustment. The present invention comprises the induction monitoring unit, a setting unit, a storing unit, a comparing unit and a PWM switching frequency adjusting unit, wherein the induction monitoring unit is connected with a computer main machine, is used for detecting the working state of the computer main machine and outputs a detection value; the setting unit can set a triggering condition value; the storing unit is connected with the setting unit and is used for storing the triggering condition value; the comparing unit is connected with the storing unit and thew induction monitoring unit, compares the processed detection value and the triggering condition value and outputs a comparative result signal; the PWM switching frequency adjusting unit is connected with the comparing unit and a converter, receives the comparative result signal and is used for adjusting the switching working frequency of the pulse width modulation PWM. The converter can efficiently provide electric power for the computer main machine.

Description

The switching power supply system of automatic circuit frequency of operation and method thereof
Technical field
The present invention relates to a kind of switching power supply system and method thereof, particularly a kind of main frame that is applied to, but and the switching power supply system of automatic circuit frequency of operation and method thereof.
Background technology
Please refer to Fig. 1, be the circuit box synoptic diagram of common switching power supply system.Wherein switching power supply system is to utilize pulse width modulation (PWM) technology, in order to the power switch in the control direct current transducer 11 (indicating), and by filtering circuit 13 and then reach the supply of systematic electricity.
The working method of pulse width modulation (PWM) technology provides a frequency of fixing to pulse width modulation unit 15 by oscillatory circuit 17 exactly.At this moment, 12 DC voltage DC that are responsible for detecting output of comparer, when so if the voltage of the DC voltage DC of output after via bleeder circuit 14 is lower than reference voltage 16, that is to say, it is heavy that output load this moment becomes, and then can make the output square wave of pulse width modulation unit 15 broaden, and promptly the work period (duty cycle) of power switch (not indicating) is elongated, like this then can compensate the voltage that output descends, and voltage is returned to original ratings to reach the purpose of voltage stabilizing.
In like manner, if load diminishes, then the voltage of Shu Chu DC voltage DC after via bleeder circuit 14 can be higher than reference voltage 16, after comparer 12 detections, can make the work period (duty cycle) of pulse width modulation unit 15 output square waves shorten, so power switch (the not indicating) work period (dutycycle) has also shortened, therefore, the DC voltage DC of output will be reduced to the ratings of standard, so can reach the effect of voltage stabilizing.And at this, power switch (not indicating) frequency of operation can't change because of the change of work period (dutycycle), and in other words, the frequency of operation of this circuit is fixed forever.
Utilize pulse width modulation (PWM) technology in the computer system at present, in order to provide CPU (central processing unit) (CPU) work required power unit.Therefore, in the electric power system of present CPU (central processing unit) (CPU), it is after design is finished, and the frequency of operation of pulse width modulation PWM output all is changeless.
Therefore, the change in voltage that no matter use that the CPU (central processing unit) (CPU) of which kind of specification carries out that the current loading that any software forms changes, the casing internal and external environment changes, power unit itself or load weight causes, for the frequency of operation of pulse width modulation PWM output, after finishing, design all can't do any change.So, for the service efficiency of pulse width modulation PWM itself, handoff loss (switching loss) to such an extent as to reduction, the inhibition of system temperature, the improvement or the pulsating volage peak of sawtooth current all can't make any contribution to the stable of reduction output voltage of peak value to the lifting of total system degree of stability, also can't bring into play the maximum efficiency of part itself and user's expectation, seriously reduce the general performance of computing machine.
Summary of the invention
In view of this, the present invention proposes a kind of switching power supply system and method thereof of automatic circuit frequency of operation, and its fundamental purpose is to provide a kind of can be applied to main frame and fast or transfer the switching power supply system and the method thereof of slow frequency of operation in order to dynamic auto accent.The present invention has significant lifting for the improvement of the inhibition of the reduction of the service efficiency of pulse width modulation PWM itself, handoff loss (switching loss), system temperature, sawtooth current or pulsating volage peak to the reduction of peak value.
The present invention is via the induction monitor unit that is connected in main frame, detect inside and outside or how many variations of specified point temperature variation, each change in voltage and load of CPU (central processing unit) (CPU) model, CPU (central processing unit) (CPU) power consumption rheologyization, casing in this main frame, and then be converted into a detected value.This detected value is sent to the comparing unit that is connected in this induction monitor unit, and simultaneously, comparing unit is the processing of making comparisons of detected value and the trigger condition value that is stored in storage element, and exports a compare result signal and be sent to PWM switching frequency adjustment unit.The above-mentioned trigger condition value that is stored in storage element is carried out setting operation and is obtained by setup unit.
In the above-mentioned explanation, PWM switching frequency adjustment unit is according to this compare result signal, and is fast or transfer the frequency of operation of Bradycardia towards width modulation PWM in order to dynamic auto accent, makes converter more efficiently to provide electric power to main frame.
Specifically, the invention discloses a kind of switching power supply system of automatic circuit frequency of operation, be used for adjusting the frequency of operation of a converter,, include to provide a direct current power supply to a main frame:
One induction monitor unit, be connected in this main frame, in order to detect the duty of this main frame, and export a detected value, it comprises at least one inductor and at least one monitoring module again, this inductor can be all kinds of combinations of a voltage sensor, a temperature inductor and a load-sensing device, and this monitoring module can be all kinds of combinations of a voltage monitoring module, a monitoring temperature module and a load monitoring module;
One setup unit can be set a trigger condition value, in order to adjust circuit work frequency;
One storage element is connected in this setup unit, in order to store this trigger condition value;
One comparing unit is connected in this storage element and this induction monitor unit, in order to this detected value of comparison process and this trigger condition value, and exports a compare result signal; And
One PWM switching frequency adjustment unit is connected in this comparing unit and this converter, receives this compare result signal, and according to this compare result signal, in order to adjust the frequency of operation of this converter.
The invention also discloses a kind of method of automatic circuit frequency of operation, be used for adjusting the frequency of operation of a converter,, include the following step to provide a direct current electric power to a main frame:
Activate an induction monitor unit, it comprises at least one inductor and at least one monitoring module again, this inductor can be all kinds of combinations of a voltage sensor, a temperature inductor and a load-sensing device, and this monitoring module can be all kinds of combinations of a voltage monitoring module, a monitoring temperature module and a load monitoring module;
The initialization circuit frequency of operation is switched a trigger condition value of adjusting;
Respond in real time and the duty of monitoring this main frame, and obtain a detected value of this host computer duty;
This detected value of real-time relatively this trigger condition value and this main frame duty; And
According to this comparative result,, adjust the frequency of operation of this converter in real time by a PWM switching frequency adjustment unit.
Set this trigger condition value step for setting a single trigger condition value of a single inductor.
Set this trigger condition value step for setting at least one trigger condition value of at least one inductor.
Setting this trigger condition value step is to preestablish before dispatching from the factory in the storage element that is stored in computer system.
At any time set by the user when setting this trigger condition value step, and be stored in the storage element of computer system for start.
The frequency of operation step of adjusting this converter in real time is the adjustment of raising frequency or frequency reducing.
The switching power supply system of automatic circuit frequency of operation of the present invention and method thereof, variation by induction monitor unit real-time monitoring computer host work state, when this variation reaches default adjustment trigger point, PWM switching frequency adjustment unit of the present invention can be according to this compare result signal, fast or transfer the frequency of operation of Bradycardia in order to dynamic auto accent towards width modulation PWM, make converter can react the running environment that changes at any time in good time, and then reach better efficient or more stable output, to provide electric power to main frame.
Description of drawings
Fig. 1 is the circuit box synoptic diagram of common switching power supply system;
Fig. 2 is the circuit box synoptic diagram of the switching power supply system of automatic circuit frequency of operation of the present invention; And
Fig. 3 is the method step process flow diagram of automatic circuit frequency of operation of the present invention.
Wherein, description of reference numerals:
11--direct current transducer, 12--comparer, 13--filtering circuit, 14--bleeder circuit
15--pulse width modulation unit, 16--reference voltage, 17--oscillating circuit
The switching power supply system of 2--automatic circuit frequency of operation
3--converter, 4--main frame
24--induction monitor unit, 26--comparing unit
27--PWM switching frequency adjustment unit, 28--storage element
The 29--setup unit
Embodiment
Please refer to Fig. 2, be the circuit box synoptic diagram of the switching power supply system of automatic circuit frequency of operation of the present invention.The present invention is a kind of switching power supply system 2 of automatic circuit frequency of operation, be used for adjusting the frequency of operation of a converter 3, to provide a direct current, include: an induction monitor unit 24, a comparing unit 26, a PWM switching frequency adjustment unit 27, a storage element 28 and a setup unit 29 to a main frame 4.
With reference to figure 2, wherein induction monitor unit 24 is connected in this main frame 4 again, in order to detecting the duty of this main frame 4, and exports a detected value.Setup unit 29 is connected in this storage element 28, in order to setting a trigger condition value, and this trigger condition value is stored in storage element 28.In the above-mentioned explanation, this trigger condition value is in order to adjust the trigger condition value of frequency of operation.Comparing unit 26 is connected in this induction monitor unit 24 and this storage element 28, receives detected value that is sent by this induction monitor unit 24 and the trigger condition value that is stored in storage element 28, compares simultaneously and handles action, and export a compare result signal.PWM switching frequency adjustment unit 27 is connected in this comparing unit 26 and this converter 3, the compare result signal that reception is sent by comparing unit 26, and fast or transfer the frequency of operation of Bradycardia according to this compare result signal towards width modulation PWM in order to dynamic auto accent, make converter 3 can more efficiently provide electric power to main frame 4.
Again with reference to figure 2, induction monitor unit 24 includes an inductor (not indicating) and a monitoring module (not indicating), wherein this inductor is voltage sensor, current inductor, temperature inductor or load-sensing device etc., and this monitoring module is voltage monitoring module, current monitoring module, monitoring temperature module or load monitoring module etc.Induction monitor unit 24 utilizes this inductor to be connected in a key point (not indicating) of main frame 4, operation state values in order to detection computations machine host 4, and cooperating monitoring module to carry operative scenario in order to the weight of voltage, electric current, temperature or the program of timely supervisory control comuter main frame 4, the real-time then reacting condition with this state is given system.
In the above-mentioned explanation, induction monitor unit 24 can be made up of at least one inductor (not indicating) and at least one monitoring module (not indicating), wherein these inductors are voltage sensor, current inductor, temperature inductor and load-sensing device etc., and these monitoring modules are voltage monitoring module, current monitoring module, monitoring temperature module and load monitoring module etc.Induction monitor unit 24 utilizes these inductors to be connected in the multiple key point of main frame 4, so that the variation of Ling Min detection computations machine host 4 runtime environments more, and cooperation monitoring module separately, carry operative scenario in order to the voltage on the real-time supervisory control comuter main frame 4, electric current, temperature and program weight, the real-time then reacting condition with these states is given system.
Again with reference to figure 2, the user can be when start by the trigger condition value of setup unit 29 initialization systems, and can be, and the trigger condition value of setting is stored in the storage element 28 according to the combination of the multiple trigger condition value of different requirements set.In use subsequently, system can pass through comparing unit 26, according to the detected value that the combination of trigger condition value and the inductor of user's setting are collected system status information, the switch operating frequency of differentiating pulse width modulation PWM should be promoted or be descended.
Under any operating system, when main frame 4 needs to handle a heavily loaded program, or main frame 4 is when needing to handle for a long time a program, and system can transfer the switch operating frequency of fast pulse width modulation PWM automatically according to demand.When system recovery just often, when perhaps routine processes finished, system just can recall to the original switch operating frequency of PWM, with normal frequency work, whole work handoff procedure needn't rely on software processes, also need not restart main frame 4, and handoff procedure can not influence the program of handling.
The present invention also separately the serviceability temperature inductor cooperate the monitoring temperature module, use in order to form a temperature monitor, when the power switch MOS temperature in the pulse width modulation PWM control transformation device 3 is too high, system can transfer the switch operating frequency of Bradycardia towards width modulation PWM automatically, makes that power switch MOS temperature is descended.When the power switch MOS temperature in the pulse width modulation PWM control transformation device 3 was lower than design temperature, pulse width modulation PWM can be with higher switching frequency work.Reaction time of the present invention is fast, and does not have compatibility issue and revise under any operating system or when setting inductor, must not restart main frame 4 and just can finish setting operation, therefore can reach the most stable with maximum usefulness.
Please refer to Fig. 3, be the method step process flow diagram of automatic circuit frequency of operation of the present invention.The method step of automatic circuit frequency of operation of the present invention is as follows: at first, activate an induction monitor cell S 100; Then, the initialization circuit frequency of operation is switched a trigger condition value S102 who adjusts; Then, the duty of induction in real time and monitoring one main frame and obtain a detected value S104 of this main frame duty; Also has the detected value S106 of real-time relatively this trigger condition value and this main frame duty; At last, according to this comparative result,, adjust the frequency of operation S108 of a converter in real time by a PWM switching frequency adjustment unit.
Cooperate Fig. 2, again with reference to figure 3, this induction monitor unit 24 includes inductor (not indicating) and monitoring module (not indicating), wherein this inductor is voltage sensor, current inductor, temperature inductor or load-sensing device etc., or their combination, and inductor all is combined with its monitoring module separately, in order to real-time supervisory control comuter main frame 4 and export detected value.This monitoring module is voltage monitoring module, current monitoring module, monitoring temperature module or load monitoring module etc.
In above-mentioned setting trigger condition step, the trigger condition value can be set according to the single trigger condition value of single inductor, also can set according at least one trigger condition value of at least one inductor.And, can be before system dispatches from the factory, to preestablish the opportunity of setting trigger condition value, and be stored in the storage element 28 of computer system, or, when the user starts shooting, at any time according to circumstances set by the user, and be stored in the storage element 28 of computer system.
In the frequency of operation step of above-mentioned real-time adjustment converter, the detected value that the trigger condition value that system sets according to the user and induction monitor unit 24 the are exported processing of making comparisons, differentiate and whether should adjust the switch operating frequency of pulse width modulation PWM this moment, the switch operating frequency of its pulse width modulation PWM can be carried out two-way adjustment, the i.e. adjustment of raising frequency or frequency reducing.Certainly, if when working environment changes no show trigger condition value, then keep the switch operating frequency of former pulse width modulation PWM.
In sum, the switching power supply system of automatic circuit frequency of operation of the present invention and method thereof provide a kind of and can be applied to main frame 4 and fast or transfer the switching power supply system and the method thereof of slow frequency of operation in order to dynamic auto accent.The present invention has significant lifting for the improvement of the inhibition of the reduction of the service efficiency of pulse width modulation PWM itself, switching loss (switching loss), system temperature, sawtooth current or pulsating volage peak to the reduction of peak value.
Above-mentioned disclosed accompanying drawing, explanation only are embodiments of the invention, and all person skilled in the art persons work as can do other all improvement according to above-mentioned explanation, and these changes still belong in invention spirit of the present invention and the scope of patent protection.

Claims (10)

1. the switching power supply system of an automatic circuit frequency of operation is used for adjusting the frequency of operation of a converter, to provide a direct current power supply to a main frame, includes:
One induction monitor unit, be connected in this main frame, in order to detect the duty of this main frame, and export a detected value, it comprises at least one inductor and at least one monitoring module again, this inductor can be all kinds of combinations of a voltage sensor, a temperature inductor and a load-sensing device, and this monitoring module can be all kinds of combinations of a voltage monitoring module, a monitoring temperature module and a load monitoring module;
One setup unit can be set a trigger condition value, in order to adjust circuit work frequency;
One storage element is connected in this setup unit, in order to store this trigger condition value;
One comparing unit is connected in this storage element and this induction monitor unit, in order to this detected value of comparison process and this trigger condition value, and exports a compare result signal; And
One PWM switching frequency adjustment unit is connected in this comparing unit and this converter, receives this compare result signal, and according to this compare result signal, in order to adjust the frequency of operation of this converter.
2. the switching power supply system of automatic circuit frequency of operation as claimed in claim 1 is characterized in that, this induction monitor unit includes: an inductor and a monitoring module.
3. the switching power supply system of automatic circuit frequency of operation as claimed in claim 2 is characterized in that, this inductor can be a voltage sensor, a current inductor, a temperature inductor or a load-sensing device.
4. the switching power supply system of automatic circuit frequency of operation as claimed in claim 2 is characterized in that, this monitoring module can be a voltage monitoring module, a current monitoring module, a monitoring temperature module or a load monitoring module.
5. the method for an automatic circuit frequency of operation is used for adjusting the frequency of operation of a converter, to provide a direct current electric power to a main frame, includes the following step:
Activate an induction monitor unit, it comprises at least one inductor and at least one monitoring module again, this inductor can be all kinds of combinations of a voltage sensor, a temperature inductor and a load-sensing device, and this monitoring module can be all kinds of combinations of a voltage monitoring module, a monitoring temperature module and a load monitoring module;
The initialization circuit frequency of operation is switched a trigger condition value of adjusting;
Respond in real time and the duty of monitoring this main frame, and obtain a detected value of this host computer duty;
This detected value of real-time relatively this trigger condition value and this main frame duty; And
According to this comparative result,, adjust the frequency of operation of this converter in real time by a PWM switching frequency adjustment unit.
6. the method for automatic circuit frequency of operation as claimed in claim 5 is characterized in that, sets this trigger condition value step for setting a single trigger condition value of a single inductor.
7. the method for automatic circuit frequency of operation as claimed in claim 5 is characterized in that, sets this trigger condition value step for setting at least one trigger condition value of at least one inductor.
8. the method for automatic circuit frequency of operation as claimed in claim 5 is characterized in that, setting this trigger condition value step is to preestablish before dispatching from the factory in the storage element that is stored in computer system.
9. the method for automatic circuit frequency of operation as claimed in claim 5 is characterized in that, is set at any time by the user when setting this trigger condition value step for start, and is stored in the storage element of computer system.
10. the method for automatic circuit frequency of operation as claimed in claim 5 is characterized in that, the frequency of operation step of adjusting this converter in real time is the adjustment of raising frequency or frequency reducing.
CNB2004100625112A 2004-06-30 2004-06-30 Switching type power supply system and its method for automatic regulating circuit work frequency Active CN1329794C (en)

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CN101625588B (en) * 2008-07-08 2011-03-23 鸿富锦精密工业(深圳)有限公司 Supply circuit of PWM controller
CN102136846B (en) * 2010-01-21 2013-11-06 天津里外科技有限公司 Power management device and method
CN102346528B (en) * 2010-08-02 2015-01-07 英业达股份有限公司 Computer device
CN102866941B (en) * 2011-07-04 2018-03-30 技嘉科技股份有限公司 The control method and its control system of computer apparatus
CN103378606A (en) * 2012-04-16 2013-10-30 山亿新能源股份有限公司 Method for improving efficiency of micro-inverter
CN109581093B (en) * 2017-09-29 2021-10-01 瑞昱半导体股份有限公司 Detection circuit and related detection method

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US5420777A (en) * 1993-06-07 1995-05-30 Nec Corporation Switching type DC-DC converter having increasing conversion efficiency at light load
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US5420777A (en) * 1993-06-07 1995-05-30 Nec Corporation Switching type DC-DC converter having increasing conversion efficiency at light load
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