CN207053389U - A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply - Google Patents
A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply Download PDFInfo
- Publication number
- CN207053389U CN207053389U CN201721094322.2U CN201721094322U CN207053389U CN 207053389 U CN207053389 U CN 207053389U CN 201721094322 U CN201721094322 U CN 201721094322U CN 207053389 U CN207053389 U CN 207053389U
- Authority
- CN
- China
- Prior art keywords
- voltage
- output
- power supply
- switching power
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply, Switching Power Supply output overshoot suppression circuit includes voltage control circuit and voltage source, wherein, voltage control circuit and the output sample circuit of Switching Power Supply connect, the reference voltage input terminal of the voltage output end of voltage source and the pid control module of Switching Power Supply connects, and, voltage control circuit exports the sampled signal of sample circuit output according to Switching Power Supply, the size of control voltage source output voltage, the output voltage of voltage source is set to follow the output voltage of the rectifying and wave-filtering output module to change.Therefore; the utility model can make the reference voltage of pid control module follow the output voltage of Switching Power Supply to change; when i.e. output voltage falls; reference voltage, which also follows, to be fallen; reference voltage also gos up when output voltage gos up; it is without damage from the overshoot amplitude of output voltage after depth current-limit mode Condition of Sudden Unloading, the load of protection switch power supply so as to reduce Switching Power Supply.
Description
Technical field
The utility model is related to switch power technology field, more particularly to a kind of Switching Power Supply output overshoot suppression circuit with
And Switching Power Supply.
Background technology
Because the transient transmission power of radar system is larger, and receiving power is relatively low so that average in the whole work period
Power is relatively low.In phased array radar system, because the peak point current inputted to system is restricted, so, high-power of transient state
It can be provided by the external storage capacitor of Switching Power Supply, and the peak power occurred in the T-time, cause Switching Power Supply to export
Voltage Drop, the 30% of rated output voltage can be exceeded serious when by falling amplitude, and when switching to receive by transmitting, entirely
Switching Power Supply is in Light Condition.Due to having an impact load when above launching, output voltage have it is larger fall, PID regulator
Sampling end be sampling and outputting voltage, so the input of PID regulator is there is also Voltage Drop, and the Voltage Drop can cause
The amplifier of PID regulator is in saturation state.Amplifier, which exits saturation and saturation depth, has certain relation, simultaneously because PID
Ring has hysteresis effect, and two kinds of influences are superimposed together, and when can cause the output voltage to rise to rated value, amplifier can't be anti-
It should come, output voltage may proceed to rise, and until the amplifier of PID loop exits saturation state, and output voltage be responded.This
Shi Ruguo does not take the measure that output overshoot suppresses, and the load of Switching Power Supply may be caused to damage.
Utility model content
The purpose of this utility model is：Solve phased array radar system in, due to the T-time occur peak power,
When can cause the Voltage Drop of Switching Power Supply, and switch to receive by transmitting, whole Switching Power Supply is in Light Condition, may be right
The load of Switching Power Supply causes the technical problem of damage.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme：
A kind of Switching Power Supply exports overshoot suppression circuit, because the Switching Power Supply has PWM controller, power conversion mould
Block, rectifying and wave-filtering output module, output sample circuit and pid control module, also, the PWM controller becomes for the power
The switch element for changing the mold block provides drive signal, and the output sample circuit samples to the rectifying and wave-filtering output module, and will
Sampled signal is sent to the pid control module, the pid control module is provided feedback signal, control to the PWM controller
Make the dutycycle of the drive signal of the PWM controller output.Switching Power Supply of the present utility model exports overshoot suppression circuit bag
Voltage control circuit and voltage source are included, wherein, the voltage control circuit is connected with the output sample circuit, the electricity
The voltage output end of potential source is connected with the reference voltage input terminal of the pid control module, also, the voltage control circuit
The sampled signal exported according to the output sample circuit, controls the size of the voltage source output voltage, makes the voltage source
Output voltage follow the output voltage of the rectifying and wave-filtering output module to change.
According to a kind of specific embodiment, in Switching Power Supply output overshoot suppression circuit of the present utility model, the electricity
Potential source is VCVS, and the voltage control circuit includes differential amplifier circuit, and the differential amplifier circuit
Differential amplification is carried out to the sampled signal, exports a corresponding voltage signal to the voltage source.
Further, the voltage control circuit also includes temperature-compensation circuit, for according to environment temperature to described
Differential amplifier circuit compensates.
Based on same inventive concept, the utility model also provides a kind of Switching Power Supply, and it includes switch of the present utility model
Power supply exports overshoot suppression circuit.
Compared with prior art, the beneficial effects of the utility model：
Switching Power Supply output overshoot suppression circuit of the present utility model includes voltage control circuit and voltage source, wherein,
Voltage control circuit and the output sample circuit of Switching Power Supply connect, the voltage output end of voltage source and the PID of Switching Power Supply
The reference voltage input terminal connection of control module, also, voltage control circuit exports sample circuit according to Switching Power Supply and exported
Sampled signal, the size of control voltage source output voltage, the output voltage of voltage source is followed rectifying and wave-filtering output mould
The output voltage change of block.Therefore, the utility model can make the reference voltage of pid control module follow the output of Switching Power Supply
Voltage change, i.e., when output voltage falls, reference voltage, which also follows, to be fallen, and when output voltage gos up, reference voltage also gos up simultaneously
Recover to rated value, so as to reduce Switching Power Supply from the overshoot amplitude of output voltage after depth current-limit mode Condition of Sudden Unloading, protection
The load of Switching Power Supply is without damage.
Brief description of the drawings：
Fig. 1 is the structural representation that the utility model Switching Power Supply exports overshoot suppression circuit；
Fig. 2 is a kind of structural representation of embodiment of the present utility model.
Embodiment
The utility model is described in further detail with reference to test example and embodiment.But should not be by this
The scope for being interpreted as the above-mentioned theme of the utility model is only limitted to following embodiment, all to be realized based on the utility model content
Technology belongs to the scope of the utility model.
The structural representation of the utility model Switching Power Supply output overshoot suppression circuit with reference to shown in Fig. 1；Wherein, switch
Power supply has PWM controller, power conversion modules, rectifying and wave-filtering output module, output sample circuit and pid control module.And
And PWM controller provides drive signal for the switch element of power conversion modules, output sample circuit exports mould to rectifying and wave-filtering
The output voltage of block is sampled, and sampled signal is sent into pid control module, pid control module is carried to PWM controller
For feedback signal, the dutycycle of the drive signal of control PWM controller output.
The utility model Switching Power Supply output overshoot suppression circuit includes voltage control circuit and voltage source, wherein, electricity
Potential source control circuit is connected with output sample circuit, and the voltage output end of voltage source and the reference voltage of pid control module input
End connection.Also, the sampled signal that voltage control circuit exports according to output sample circuit, control voltage source output voltage
Size, and make the output voltage of voltage source follow the output voltage of rectifying and wave-filtering output module to change.That is Switching Power Supply output electricity
When pressure is fallen, the reference voltage of voltage source offer, which also follows, to be fallen, and during switch power source output voltage rise, what voltage source provided
Reference voltage also gos up and recovered to rated value, so as to reduce Switching Power Supply from output voltage after depth current-limit mode Condition of Sudden Unloading
Overshoot amplitude, the load of protection switch power supply is without damage.
A kind of structural representation of embodiment of the present utility model with reference to shown in Fig. 2；Wherein, the utility model switch electricity
In source output overshoot suppression circuit, voltage source is VCVS, and voltage control circuit includes differential amplifier circuit, and
And differential amplifier circuit carries out differential amplification to sampled signal, exports a corresponding voltage signal to voltage source, control voltage
Source output follows the voltage that the output voltage of Switching Power Supply changes.Moreover, voltage control circuit also includes temperature-compensation circuit,
For being compensated according to environment temperature to the differential amplifier circuit.
When in use, the peak power that phased array radar system occurs in the T-time, causes switch power source output voltage
Fall, Switching Power Supply is entered depth current-limit mode, and when phased array radar system switchs to receive by launching, whole switch electricity
Source is in Light Condition, it is necessary to ensure that switch power source output voltage can not be too high.Therefore, because the sampled signal in real time open by reflection
The size of powered-down pressure output voltage, then, differential amplifier circuit combines using the sampled signal of output sample circuit as input
The voltage compensation of temperature-compensation circuit, voltage source can be made to produce the voltage of a sampled value for being slightly above sampled signal, by electricity
Reference voltage of the voltage of potential source output as pid control module, can prevent pid control module from entering depth saturation state,
The drive signal dutycycle for avoiding PWM controller from exporting reduces, and is dashed forward so as to effectively reduce Switching Power Supply from depth current-limit mode
The overshoot amplitude of output voltage, the load of protection switch power supply are without damage after so unloading.
Based on same inventive concept, Switching Power Supply provided by the utility model includes above-mentioned Switching Power Supply output overshoot suppression
Circuit processed.In the application of phased array radar system, Switching Power Supply of the present utility model can effectively reduce Switching Power Supply from
The overshoot amplitude of output voltage, the load of protection switch power supply are without damage after depth current-limit mode Condition of Sudden Unloading.
Claims (4)
1. a kind of Switching Power Supply exports overshoot suppression circuit, the Switching Power Supply has PWM controller, power conversion modules, whole
Stream filtering output module, output sample circuit and pid control module, also, the PWM controller is the power conversion modules
Switch element provide drive signal, it is described output sample circuit the rectifying and wave-filtering output module sample, and will sampling letter
Number the pid control module is sent to, the pid control module is provided feedback signal to the PWM controller, described in control
The dutycycle of the drive signal of PWM controller output, it is characterised in that the output overshoot suppression circuit controls including voltage source
Circuit and voltage source, wherein, the voltage control circuit is connected with the output sample circuit, and the voltage of the voltage source is defeated
Go out end to be connected with the reference voltage input terminal of the pid control module, also, the voltage control circuit is according to the output
The sampled signal of sample circuit output, controls the size of the voltage source output voltage, make the output voltage of the voltage source with
Change with the output voltage of the rectifying and wave-filtering output module.
2. Switching Power Supply as claimed in claim 1 exports overshoot suppression circuit, it is characterised in that the voltage source is voltage control
Voltage source processed, the voltage control circuit includes differential amplifier circuit, and the differential amplifier circuit is believed the sampling
Number carry out differential amplification, export a corresponding voltage signal to the voltage source.
3. Switching Power Supply as claimed in claim 2 exports overshoot suppression circuit, it is characterised in that the voltage control circuit
Also include temperature-compensation circuit, for being compensated according to environment temperature to the differential amplifier circuit.
4. a kind of Switching Power Supply, it is characterised in that including the Switching Power Supply output overshoot suppression as described in one of claims 1 to 3
Circuit processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721094322.2U CN207053389U (en) | 2017-08-29 | 2017-08-29 | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721094322.2U CN207053389U (en) | 2017-08-29 | 2017-08-29 | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207053389U true CN207053389U (en) | 2018-02-27 |
Family
ID=61503731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721094322.2U Active CN207053389U (en) | 2017-08-29 | 2017-08-29 | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207053389U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342678A (en) * | 2017-08-29 | 2017-11-10 | 成都雷电微力科技有限公司 | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply |
| CN111697815A (en) * | 2020-05-26 | 2020-09-22 | 北京国铁路阳技术有限公司 | Circuit and method for prolonging service life of electrolytic capacitor in high-power PFC circuit |
-
2017
- 2017-08-29 CN CN201721094322.2U patent/CN207053389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342678A (en) * | 2017-08-29 | 2017-11-10 | 成都雷电微力科技有限公司 | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply |
| CN111697815A (en) * | 2020-05-26 | 2020-09-22 | 北京国铁路阳技术有限公司 | Circuit and method for prolonging service life of electrolytic capacitor in high-power PFC circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102684656B (en) | Gate circuit | |
| WO2009091474A8 (en) | Hybrid on-chip regulator for limited output high voltage | |
| CN109981057A (en) | The modulator approach of GaN power amplifier drain power modulation chip | |
| CN107342678A (en) | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply | |
| CN207053389U (en) | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply | |
| CN208508789U (en) | A kind of miniaturization low power consumption switch power starting circuit | |
| CN108471228A (en) | A kind of quick leadage circuit of DC/DC conversion modules output voltage and its implementation | |
| CN203674964U (en) | Sampling feedback circuit and power supply circuit | |
| CN104393760B (en) | The positive negative output low voltage difference with short-circuit protection function adjusts circuit | |
| CN109274261A (en) | A kind of non-isolated negative pressure output control circuit and control method | |
| CN204518162U (en) | A kind of charge pump type LED drive chip | |
| CN103701444A (en) | Power driving circuit with hard real-time overcurrent protection function | |
| CN103595093A (en) | Solar storage battery discharging device | |
| CN203415955U (en) | Novel short-circuit protection circuit for switching power supply | |
| CN203026919U (en) | Input under-voltage protection circuit of photovoltaic inverter power supply | |
| CN110854961B (en) | Power-on impact current suppression circuit | |
| CN212305134U (en) | Control circuit for constant current source output voltage convex wave | |
| CN107398609A (en) | One kind is used for large space multiple computer desk Electrolyzed Processing intelligent control pulse power system | |
| CN203204483U (en) | Quick-response direct-current transmitter | |
| CN203337807U (en) | Circuit capable of inhibiting overvoltage locking protection for current-constant power supply during startup | |
| CN203537253U (en) | Parallel connection structure for switching power supplies | |
| CN105468073A (en) | High-speed collecting and processing system transient power consumption reducing circuit and method | |
| CN105444787A (en) | Direct current transmitter with high reliability | |
| CN208386120U (en) | Current foldback circuit with foldback circuit | |
| CN116826683B (en) | Airborne surge voltage clamping circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 610041 Shiyang Industrial Park, No.288, Yixin Avenue, hi tech Zone, Chengdu, Sichuan Province Patentee after: Chengdu lightning Micro Power Technology Co., Ltd Address before: 610213 Shiyang Industrial Park, hi tech Zone, Chengdu, Sichuan Patentee before: RML TECHNOLOGY Co.,Ltd. |