CN106877642B - A kind of full-bridge phase-shift type Switching Power Supply output control system and method - Google Patents
A kind of full-bridge phase-shift type Switching Power Supply output control system and method Download PDFInfo
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- CN106877642B CN106877642B CN201710135924.6A CN201710135924A CN106877642B CN 106877642 B CN106877642 B CN 106877642B CN 201710135924 A CN201710135924 A CN 201710135924A CN 106877642 B CN106877642 B CN 106877642B
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- power supply
- circuit
- flip flop
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/38—Means for preventing simultaneous conduction of switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/38—Means for preventing simultaneous conduction of switches
- H02M1/385—Means for preventing simultaneous conduction of switches with means for correcting output voltage deviations introduced by the dead time
Abstract
The present invention relates to a kind of full-bridge phase-shift type Switching Power Supply output control system and methods, belong to Switching Power Supply output control technology field.The system includes that circuit, output trigger circuit, power supply and output control circuit are extracted in dead zone；It extracts circuit and is mainly made of 3 NAND gates and 2 d type flip flops in dead zone；Output trigger circuit is mainly made of 2 d type flip flops；Output control circuit is by 4 and Men Zucheng；Power supply is full-bridge phase-shift type Switching Power Supply.By full-bridge phase-shift driving circuit die extractive technique, power supply output triggering and control technology, guarantee phase-shift type full bridge driving circuit work in dead zone state control Switching Power Supply output on-off；The impact that switch tube and load can be effectively reduced improves the reliability of Switching Power Supply and the safety of load.
Description
Technical field
It can be the present invention relates to a kind of full-bridge phase-shift type Switching Power Supply output control system and method more particularly to one kind
The work of Switching Power Supply full bridge driving circuit controls the technology of Switching Power Supply output on-off in dead zone (dead time) state, belongs to
Control technology field is exported in Switching Power Supply.
Background technique
Full-bridge phase-shift type Switching Power Supply is a kind of common DC power supply topological structure, has wide input voltage range, conversion
The features such as high-efficient, output ripple is small and the operation is stable, is widely used in high voltage, high-power DC power supply.Common is complete
Bridge phase-shift type Switching Power Supply is be easy to cause out there is switch tube and the biggish defect of load shock not in dead zone switching on and shutting down
The performance decline for closing pipe and load even damages.It, can be effective using the full-bridge phase-shift type Switching Power Supply of output dead zone function circuit
The impact and damage for reducing switch tube and load, improve the reliability of Switching Power Supply and the safety of load.
Totally 4, article of typical case related to the present invention, separately below dissects it:
" microelectric technique " volume 39 the 1st interim " dead-time control circuit for step-down DC-DC converter " text
The production principle for describing the dead time of step-down DC-DC converter proposes a kind of control circuit of dead time, passes through inspection
The electric current in load is surveyed, the delay of dynamic regulation dead zone reduces the turn-on time of body diode, the generation of suppressed ringing phenomenon,
The quality for improving electric power output voltage to a certain extent is not directed to utilize Power MOSFET switching on and shutting down technology.
" the electronic engineering world " is directed to for 2014 the 9th in interim " control method of Switching Power Supply Multiple-output " text
An important performance indexes are exactly to propose constant-current source the problem of loading cross regulation rate and realize that multichannel is defeated in Multiple-output
Out with PWM-PD Multiple-output, improve multi-output switch power source cross regulation rate, is not directed to utilize Power MOSFET
Switching on and shutting down technology.
" Chinese Water Transportation (the second half of the month) " 2008 12 interim " converter main circuit switch control signal dead zone generates research "
There is the characteristics of stringent dead zone requirement according to middle high-pressure converter main circuit and to the switch control signal of input in one text, proposes
Switch control signal dead zone generate with the simulation realizing method of adjustment and digital implementation method, it is real emphatically to give digital method
Existing mentality of designing and part of original code is not directed to utilize Power MOSFET switching on and shutting down technology.
" zero method current soft-switch welding inverter power source of zero-pressure in " China Institute of Electrical Engineering Technology's Annual Conference collection of thesis in 2011 "
The phase shifting control full bridge power translation circuit using auxiliary resonant net is directed in the adaptive phase shifting control system in a dead zone " text,
On the basis of analyzing leading arm and lagging leg power device switching dead time bound, Sofe Switch resonance mistake is disclosed
The rule that requirement of the journey to dead time bound and controllable time changes with power work state (especially output electric current).It mentions
The phase-shifting control method using dead time automatic adjusument is gone out, the resonant process for making dead time and being influenced by circuit energy
It remains cooperation, realizes the Sofe Switch of two-arm power device full-load range.And by control system corrector loop
Save the rational design of parameter, the characteristics of being controlled according to Sofe Switch dynamic adjust the quiescent point of correction link, make the source of welding current
System obtains good quiet dynamic control effect.
Document above otherwise by dead time control reduce Switching Power Supply output ring or make dead time
Cooperation is remained with the resonant process influenced by circuit energy, realizes soft the opening of two-arm power device full-load range
It closes, reduces power supply output ripple to a certain extent, improve the quality of power supply output, but there are still any time switches
The risk that machine causes switch tube and load voltage surges to damage.The invention is exactly to shut down using Power MOSFET power supply
In order to reduce the voltge surge of switching on and shutting down switch tube and power source loads, the reliability of Switching Power Supply and the safety of load are improved
Property.
Summary of the invention
It is an object of the invention to overcome existing full-bridge phase-shift type Switching Power Supply switch tube and load in switching on and shutting down to produce
The technological deficiency of raw voltge surge proposes a kind of full-bridge phase-shift type Switching Power Supply output control system and method.
Specifically, technological core of the invention are as follows: by full-bridge phase-shift driving circuit die extractive technique, power supply export
Triggering and control technology guarantee that the work of phase-shift type full bridge driving circuit controls the on-off of Switching Power Supply output in dead zone state.
In order to achieve the above object, a kind of full-bridge phase-shift type current switch power supply output control system of the present invention and method packet
Containing a kind of full-bridge phase-shift type Switching Power Supply output control system and a kind of full-bridge phase-shift type Switching Power Supply output control method.
Wherein, a kind of full-bridge phase-shift type Switching Power Supply output control system mainly includes that circuit, output triggering are extracted in dead zone
Circuit and output control circuit；
Wherein, dead zone is extracted circuit and is mainly made of 3 NAND gates and 2 d type flip flops；Trigger circuit is exported mainly by 2
A d type flip flop composition；Output control circuit is by 4 and Men Zucheng；Power supply is full-bridge phase-shift type Switching Power Supply；
A kind of connection relationship of full-bridge phase-shift type Switching Power Supply output control system is as follows:
Full-bridge phase-shift type driving circuit (1) and nor gate (6), nor gate (7) and door (13) and door (14) company and door
(15), it is connect with door (16)；Nor gate (6) and full-bridge phase-shift type driving circuit (1), d type flip flop (8) connection；Nor gate (7) and
Full-bridge phase-shift type driving circuit (1), d type flip flop (9) connection；D type flip flop (8) and nor gate (6), nor gate (10) connection；D touching
Send out device (9) and nor gate (7), nor gate (10) connection；Nor gate (10) and d type flip flop (8), d type flip flop (9), d type flip flop
(11) it connects；D type flip flop (11) and nor gate (10), d type flip flop (12) connection；D type flip flop (12) and d type flip flop (11), with
Door (13) is connect with door (14), with door (15), with door (16)；With door (13) and phase-shift type driving circuit (1), d type flip flop
(12), full bridge switching circuit (5) connects；With door (14) and phase-shift type driving circuit (1), d type flip flop (12), full bridge switching circuit
(5) it connects；It is connect with door (15) and phase-shift type driving circuit (1), d type flip flop (12), full bridge switching circuit (5)；With door (16)
With phase-shift type driving circuit (1), d type flip flop (12), full bridge switching circuit (5) connection；Full bridge switching circuit (5) He Yumen
(13), it is connect with door (14), with door (15), with door (16)；
The function of each module is as follows in a kind of full-bridge phase-shift type Switching Power Supply output control system:
It extracts circuit (2) and extracts the pulse signal wide with dead zone from full-bridge phase-shift type driving circuit (1) in dead zone；Output
Trigger circuit (3) exports high or low level to output control circuit after receiving ON/OFF triggering level；Output control circuit
(4) on-off of full bridge switching circuit (5) is controlled；
A kind of full-bridge phase-shift type Switching Power Supply output control method, includes the following steps:
After step 1. connects a kind of power supply of full-bridge phase-shift type Switching Power Supply output control system, full-bridge phase-shift type driving electricity
Distinguish output pulse signal in the road end A, B, C, D；
Wherein, pulse signal is Transistor-Transistor Logic level；
The tetra- road pulse signal of A, B, C, D of step 2. step 1 output extracts circuit into dead zone, specifically:
2.1A, B pulse signal enter output A/B pulse signal after d type flip flop after respectively enteing nor gate；
2.2C, D pulse signal enter output C/D pulse signal after d type flip flop after respectively enteing nor gate；
2.3A/B and C/D pulse signal exports dead time pulse signal after respectively enteing nor gate；
Dead time pulse signal caused by step 3. step 2 enters output trigger circuit and generates output trigger pulse
Signal；
Output start pulse signal caused by step 4. step 3 generates the control of Switching Power Supply on-off by output control circuit
Signal processed；
So far, from step 1 to step 4, a kind of full-bridge phase-shift type Switching Power Supply output control method is completed.
Beneficial effect
A kind of full-bridge phase-shift type Switching Power Supply output control system and method have following beneficial compared with prior art
Effect:
The present invention can the switching on and shutting down at full bridge driving circuit dead zone, the impact of switch tube and load can be effectively reduced,
Improve the reliability of Switching Power Supply and the safety of load.
Detailed description of the invention
Fig. 1 is a kind of circuit composition block diagram of full-bridge phase-shift type Switching Power Supply output control system and method for the present invention；
Fig. 2 is a kind of embodiment circuit diagram of full-bridge phase-shift type Switching Power Supply output control system and method for the present invention；
Fig. 3 is a kind of full-bridge phase-shift type Switching Power Supply output control system of the present invention and embodiment of the method working timing figure.
Specific embodiment
The present invention is done with reference to the accompanying drawing described in detail below.
Embodiment 1
The present embodiment describes a kind of full-bridge phase-shift type Switching Power Supply output control system proposed by the invention and method
Composition and the course of work.
Fig. 1 is a kind of circuit composition block diagram of full-bridge phase-shift type Switching Power Supply output control system and method for the present invention.
As seen from Figure 1, a kind of electricity of full-bridge phase-shift type Switching Power Supply output control system and method for the present invention is realized
Road generally comprises dead zone and extracts circuit (2), output trigger circuit (3) and output control circuit (4).
Fig. 2 is a kind of embodiment circuit diagram of full-bridge phase-shift type Switching Power Supply output control system and method for the present invention.
As seen from Figure 2, circuit (2) are extracted by nor gate (6), nor gate (7), d type flip flop (8), d type flip flop in dead zone
(9) it is formed with nor gate (10)；Output trigger circuit (3) is made of d type flip flop (11) and d type flip flop (12)；Output control electricity
Road (4) You Yumen (13), is formed with door (14), with door (15) He Yumen (16).
Fig. 3 is a kind of full-bridge phase-shift type Switching Power Supply output control system of the present invention and embodiment of the method working timing figure.
As seen from Figure 3, level pulse signal direction represents the time, and pulse signal longitudinal direction represents voltage, dotted line
Represent pulse signal timing.A pulse signal holds output by full-bridge phase-shift type driving circuit (1) A phase；B pulse signal is by full-bridge phase
Shifting formula driving circuit (1) B phase holds generation output；C pulse signal holds generation output by full-bridge phase-shift type driving circuit (1) C phase；D
Pulse signal holds generation output by full-bridge phase-shift type driving circuit (1) D phase；A/B pulse signal by dead zone extract circuit (2) in or
NOT gate (6) generates output；C/D pulse signal extracts nor gate (7) in circuit (2) by dead zone and generates output；Dead time pulse
Signal is A, B pulse signal and C, D pulse signal after d type flip flop (8) and d type flip flop (9) shaping, is generated by nor gate (10)
Output.
The course of work of the invention is as follows:
After power supply power supply, full-bridge phase-shift type driving circuit (1) is started to work, and exports tetra- road A, B, C, D letter shown in Fig. 3
Number, A, B signal export A/B signal shown in Fig. 3 after nor gate (6) in dead zone extraction circuit (2)；C, D signal is mentioned through dead zone
In sense circuit (2) after nor gate (7), C/D signal shown in Fig. 3 is exported.A/B, C/D signal extract the D in circuit (2) through dead zone
Trigger (8), d type flip flop (9) carry out shaping pulse, then extract in nor gate (10) output Fig. 3 in circuit (2) through dead zone
The pulse signal dead time wide with dead zone.A d type flip flop (11) of the pulse signal by output trigger circuit (3)
Shaping pulse is carried out, using this pulse as the clock of one d type flip flop (12) of switching on and shutting down trigger circuit.When output trigger circuit
(3) d type flip flop (12) when the d type flip flop (12) in receives switching on and shutting down trigger signal ON/OFF, in output trigger circuit (3)
Export high level (when booting) or low level (when shutdown).Export the trigger signal of d type flip flop (12) output in trigger circuit 3
To output control circuit (4) with door (13), with door (14), with door (15), with door (16), the full-bridge switch when exporting high level
Circuit (5) is started to work；When exporting low level, full bridge switching circuit (5) stops working.
The above is presently preferred embodiments of the present invention, and it is public that the present invention should not be limited to embodiment and attached drawing institute
The content opened.It is all not depart from the lower equivalent or modification completed of spirit disclosed in this invention, both fall within the model that the present invention protects
It encloses.
Claims (2)
1. a kind of full-bridge phase-shift type Switching Power Supply output control system, it is characterised in that: mainly include that circuit, output are extracted in dead zone
Trigger circuit and output control circuit pass through full-bridge phase-shift driving circuit dead zone extractive technique, power supply output triggering and control skill
Art guarantees that full-bridge phase-shift type drive circuit works control the on-off of full-bridge phase-shift type Switching Power Supply output in dead zone state；
In the full-bridge phase-shift type Switching Power Supply output control system, circuit is extracted mainly by 3 nor gates and 2 D touchings in dead zone
Send out device composition；Output trigger circuit is mainly made of 2 d type flip flops；Output control circuit is by 4 and Men Zucheng；
The connection relationship of the full-bridge phase-shift type Switching Power Supply output control system is as follows:
1st output end of full-bridge phase-shift type driving circuit be connected to the 1st input terminal of nor gate 7 and with door 13 the 1st
A input terminal；2nd output end of full-bridge phase-shift type driving circuit be connected to nor gate 7 the 2nd input terminal and with door 14
The 1st input terminal；3rd output end of full-bridge phase-shift type driving circuit be connected to nor gate 6 the 1st input terminal and with
1st input terminal of door 15；4th output end of full-bridge phase-shift type driving circuit be connected to the 2nd input terminal of nor gate 6 with
And the 1st input terminal with door 16；
The output end of nor gate 6 is connected on the input terminal of d type flip flop 8, and the Q output of d type flip flop 8 is connected to nor gate 10
1st input terminal；The output end of nor gate 7 is connected on the input terminal of d type flip flop 9, the Q output of d type flip flop 9 be connected to or
2nd input terminal of NOT gate 10；
CLK is connected to the input end of clock of d type flip flop 8, d type flip flop 9 and d type flip flop 11；
The Q output of d type flip flop 11 is connected to the input end of clock of d type flip flop 12；ON/OFF signal accesses the defeated of d type flip flop 12
Enter end；The Q output of d type flip flop 12 be respectively connected in output control circuit with door 13, with door 14, with door 15 and with door 16
2nd input terminal；
The function of each module is as follows in the full-bridge phase-shift type Switching Power Supply output control system:
It extracts circuit and extracts dead time pulse signal from full-bridge phase-shift type driving circuit in dead zone；Output trigger circuit is connecing
After receiving ON/OFF triggering level, high or low level is exported to output control circuit；Output control circuit controls full-bridge switch electricity
The on-off on road.
2. a kind of full-bridge phase-shift type Switching Power Supply output control method, characterized by the following steps:
After step 1. connects a kind of power supply of full-bridge phase-shift type Switching Power Supply output control system, full-bridge phase-shift type driving circuit A,
B, output pulse signal is distinguished at the end C, D；
Wherein, pulse signal is Transistor-Transistor Logic level；
The tetra- road pulse signal of A, B, C, D of step 2. step 1 output extracts circuit into dead zone, specifically:
2.1A, B pulse signal respectively enter enter d type flip flop after nor gate after exportPulse signal；
2.2C, D pulse signal respectively enter enter d type flip flop after nor gate after exportPulse signal；
2.3WithPulse signal exports dead time pulse signal after respectively enteing nor gate；
Dead time pulse signal caused by step 3. step 2 enters output trigger circuit and generates output start pulse signal,
Export trigger circuit specifically: dead time pulse signal enters the input terminal of the d type flip flop 11 in output trigger circuit；D touching
The input end of clock of the Q output access d type flip flop 12 of device 11 is sent out, ON/OFF signal accesses the input terminal of d type flip flop 12；Output
Start pulse signal is the Q output of d type flip flop 12；
Output start pulse signal caused by step 4. step 3 generates Switching Power Supply on-off control letter by output control circuit
Number.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135924.6A CN106877642B (en) | 2017-03-09 | 2017-03-09 | A kind of full-bridge phase-shift type Switching Power Supply output control system and method |
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|---|---|---|---|
| CN201710135924.6A CN106877642B (en) | 2017-03-09 | 2017-03-09 | A kind of full-bridge phase-shift type Switching Power Supply output control system and method |
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| Publication Number | Publication Date |
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| CN106877642A CN106877642A (en) | 2017-06-20 |
| CN106877642B true CN106877642B (en) | 2019-03-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2199656Y (en) * | 1994-03-28 | 1995-05-31 | 王保民 | Single wire input and output lamp switch for gradually changing incandescent lamp light |
| US6724596B2 (en) * | 2001-01-26 | 2004-04-20 | Powerware Corporation | Hysteretic current control method and an uninterruptible power supply using same |
| JP4111020B2 (en) * | 2003-03-17 | 2008-07-02 | 横河電機株式会社 | Optical path control device |
| CN100377488C (en) * | 2004-03-29 | 2008-03-26 | 尼克森微电子股份有限公司 | Semi-bridge conrol signal generating circuit and method thereof |
| CN103997295B (en) * | 2014-05-27 | 2016-05-18 | 安徽循环经济技术工程院 | Photovoltaic battery charge controller |
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