CN209267438U - A kind of isolated DC Switching Power Supply of tape starting control - Google Patents
A kind of isolated DC Switching Power Supply of tape starting control Download PDFInfo
- Publication number
- CN209267438U CN209267438U CN201920158010.6U CN201920158010U CN209267438U CN 209267438 U CN209267438 U CN 209267438U CN 201920158010 U CN201920158010 U CN 201920158010U CN 209267438 U CN209267438 U CN 209267438U
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- China
- Prior art keywords
- module
- starting control
- circuit
- control module
- power supply
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- 238000007493 shaping process Methods 0.000 claims abstract description 32
- 238000002955 isolation Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 7
- 210000001367 artery Anatomy 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 25
- 239000004065 semiconductor Substances 0.000 description 20
- 230000001360 synchronised effect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of isolated DC Switching Power Supplies of tape starting control; including input shaper module, conversion module, output Shaping module, control module, protective module and accessory power supply; it further include starting control module; the starting control module input terminal is connected with control module; starting control module output end is connected with output Shaping module; for generating starting control signal according to control module pulse signal, send to output Shaping module and control；Starting control module includes starting control circuit and isolation circuit, and the starting control circuit is used to be isolated the electromagnetic interference of starting control circuit and output Shaping intermodule for generating starting control signal, the isolation circuit.The utility model can solve the problems, such as band pre-bias voltage by starting control module when applying, and consistency is good, applied widely, anti-surge circuit is designed by soft starting mode, the moment surge current that is powered is effectively eliminated, and circuit loss is low, not vulnerable to external interference.
Description
Technical field
The utility model relates to isolated DC field of switch power, the isolated DC switch of specifically a kind of tape starting control
Power supply.
Background technique
Switching Power Supply is a kind of high frequency device for converting electric energy, is one kind of power supply unit, and function is by a position
Quasi- voltage, is converted to the required voltage of user terminal or electric current through various forms of frameworks.Compared to linear power supply, switch
Power supply is widely used in the electronic equipment of all trades and professions because of the advantages that its is high-efficient, small in size and light-weight.Wherein isolation is straight
For current switching power supply since it has the advantages that electrical isolation is used widely, existing isolated DC Switching Power Supply includes that input is whole
Shape module, transformer, output Shaping module, control module and accessory power supply, input shaper module, conversion module and output are whole
Shape module is used to generate pulse signal according to Voltage Feedback for alternating current to be converted to smooth DC output voltage, control module
Voltage needed for controlling conversion module output, accessory power supply is for providing the operating voltage of control module.
Traditional isolated DC Switching Power Supply output Shaping module is rectified using diode, with the development of science and technology,
Requirement to Switching Power Supply is increasingly increased, therefore has the synchronous rectification for improving circuit efficiency and reducing circuit volume advantage
Gradually instead of diode rectification, synchronous rectification is realized by the way that diode is transformed to metal-oxide-semiconductor.But due to metal-oxide-semiconductor
For bidirectionally conductive device, therefore in electrifying startup, if being had existed on the filter capacitor of output Shaping module sufficiently high pre-
Bias voltage can then generate reverse current, the phenomenon that energy is transmitted from output Shaping module to transformer occur, this will lead to out
Powered-down source cannot normally start, and occur rushing on output voltage waveforms, transformer and load can be damaged when serious.
Utility model content
Utility model aims to solve the above problems of existing cabinet, provide a kind of isolation of tape starting control
Direct-current switch power supply can solve the problems, such as that band pre-bias voltage starts by starting control module when applying, and consistency is good, fits
It is wide with range, while can effectively inhibit energization surge, it is ensured that the reliable and secure work of Switching Power Supply.
The purpose of this utility model is achieved through the following technical solutions:
A kind of isolated DC Switching Power Supply of tape starting control, including input shaper module, conversion module, output Shaping mould
Block, control module, protective module and accessory power supply further include starting control module, the starting control module input terminal and control
Molding block is connected, and starting control module output end is connected with output Shaping module, for being generated according to control module pulse signal
Starting control signal, send to output Shaping module and controls；Starting control module includes starting control circuit and isolation circuit, described
Start control circuit for generating starting control signal, the isolation circuit is for being isolated starting control circuit and output Shaping mould
Electromagnetic interference between block.
Preferably, the starting control circuit includes step circuit, for generating step signal.
Preferably, the isolation circuit includes signal isolation chip, and signal isolation chip model is IL711.
Preferably, the protective module includes anti-surge circuit, and it is defeated that the anti-surge circuit input terminal connects external alternating current
Enter and connect input shaper module and external loading with output Shaping module, anti-surge circuit output end, for passing through soft start side
Formula inhibits the surge of energization moment.
In conclusion the utility model has the following beneficial effects: by opening function control module, by the pulse of control module
After signal inversion with handled by step signal after the signal phase being slowly unfolded that generates with generate one and be synchronized with conversion module
The signal being slowly unfolded slowly rises to control the metal-oxide-semiconductor driving voltage of output Shaping module, so that in conversion module output end
Metal-oxide-semiconductor is just connected after voltage is greater than pre-bias voltage, to avoid reverse current, reaches and stablizes normal starting.Pass through soft start
Mode designs anti-surge circuit, the moment surge current of being powered is effectively eliminated, and circuit loss is low, not vulnerable to external interference.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the starting electric operation control circuit figure of one specific embodiment of the utility model.
Fig. 2 is the isolates circuit diagram of one specific embodiment of the utility model.
Fig. 3 is the anti-surge circuit figure of one specific embodiment of the utility model.
Fig. 4 is the functional block diagram of one specific embodiment of the utility model.
Specific embodiment
Multiple embodiments that the utility model will be disclosed with schema below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical new
Type.That is, the details in these practices is non-essential in some embodiments of the utility model.In addition, for letter
For the sake of changing schema, some known usual structures and component will be painted it in the drawings in simply illustrative mode.
Embodiment:
As shown in Figures 1 to 4, a kind of isolated DC Switching Power Supply of tape starting control, including input shaper module, transformation mould
Block, output Shaping module, control module and accessory power supply, input shaper module, conversion module and output Shaping module are successively
Connection, for alternating current to be converted to smooth DC output voltage.Control module input terminal connects output Shaping module, controls mould
Block output end connects conversion module, for voltage needed for generating pulse signal control conversion module output according to Voltage Feedback.
Accessory power supply link control module, for providing the operating voltage of control module.Input shaper module and output in above-mentioned module
Shaping Module is all made of common filter circuit and rectification circuit, and conversion module selects common transformer according to voltage transformation demand,
Control module uses single-chip microcontroller STM32F103 and its common peripheral circuit, is not specifically described herein.
The present embodiment further includes starting control module, and accessory power supply is also starting control module power supply, starts control module
Input terminal is connected with control module, and starting control module output end is connected with output Shaping module, for according to control module arteries and veins
It rushes signal and generates the starting control signal for being synchronized with conversion module, it is slow come the metal-oxide-semiconductor driving voltage that controls output Shaping module
Rise, so that metal-oxide-semiconductor is just connected after conversion module output end voltage is greater than pre-bias voltage, to avoid reverse current, reaches
Normally start to stablizing.Starting control module includes starting control circuit and isolation circuit.
Start control circuit for generating starting control signal, starting control circuit includes step circuit, for generating rank
Jump signal.Specifically, starting control circuit includes resistance R1 to R5, capacitor C1, C2 and C4, comparator U1 and U2, diode D1,
Phase inverter X1, with door X2.The one end connecting resistance R1 and the one end capacitor C1 are followed by behind the one end comparator U1 homophase input terminating resistor R2
Input shaper module is grounded after another termination capacitor C1 other end of resistance R2, and comparator U1 anti-phase input terminates reference signal, than
The one end capacitor C2 and the one end resistance R5 are followed by compared with device U1 output terminating resistor R4 and is followed by comparator U2 non-inverting input terminal, and capacitor C2 is another
One end is grounded after being connected with the resistance R5 other end, and phase inverter X1 input termination control module, phase inverter X1 exports terminating diode
D1 cathode and with one end connecting resistance R3 after mono- input terminal of door X2, another terminating diode D1 anode of resistance R3 and the one end capacitor C4
It is followed by comparator U2 reverse input end, capacitor C4 other end ground connection.Phase inverter X1 output termination and another input terminal of door X2, with
Door X2 output end connects isolation circuit input terminal.Comparator U1, resistance R1 and R2, capacitor C1 constitute step electricity in foregoing circuit
Road, by the way that the voltage signal after input shaper is made comparisons with reference voltage, so that comparator U1 output generates from low to high
Jump, obtains the signal a of an ascending variation by the RC time delay network being made of resistance R4, resistance R5 and capacitor C2,
Similar triangle is obtained after the inverted delay with the RCD being made of diode D1, resistance R3 with capacitor C4 of control module signal simultaneously
Wave signal b, then a signal is obtained to the signal c being slowly unfolded compared with b signal, c signal and the control module Jing Guo reverse phase
Signal phase is with the final ascending output Shaping module metal-oxide-semiconductor being slowly unfolded for being synchronized with conversion module for generating needs
Driving signal.Foregoing circuit input signal and reference signal have the existing signal of remaining module to be evolved, and circuit consistency is good,
Suitable for different Switching Power Supplies, and only use comparator, simple with door, phase inverter and resistance capacitance etc. i.e. realization, circuit
Reliably.
Isolation circuit is used to be isolated the electromagnetic interference of starting control circuit and output Shaping intermodule, and isolation circuit includes letter
Number isolating chip, signal isolation chip model are IL711, and specifically, isolation circuit includes signal isolation chip U3, resistance R6 and
R7, capacitor C5 to C7, diode D4 and D5, signal isolation chip U3 pin 2 connect control module, and U3 pin 3 connects starting control electricity
Road output end, U3 pin 1 connect accessory power supply, and U3 pin 4 and pin 5 are grounded, and U3 pin 8 connects the one end capacitor C7 and is followed by auxiliary electricity
Source, capacitor C7 other end ground connection, U3 pin 7 connect the one end connecting resistance R6, the resistance R6 other end and diode after diode D4 cathode
The connected one end capacitor C6 that is followed by of D4 anode is followed by output Shaping module, capacitor C6 other end ground connection.U3 pin 6 is meeting diode D5 just
One end connecting resistance R7 after extremely, the resistance R7 other end is connected with diode D5 cathode to be followed by the one end capacitor C5 and is followed by output Shaping mould
Block, capacitor C5 other end ground connection.Foregoing circuit is isolated using the signal isolation chip of model IL711, and isolation performance is good,
High reliablity.
The present embodiment further includes protective module, and protective module includes anti-surge circuit, and the anti-surge circuit input terminal connects
It connects external alternating current and outputs and inputs Shaping Module, anti-surge circuit output end connects input shaper module and external loading, is used for
Inhibit the surge of energization moment by soft starting mode.As shown in figure 3, anti-surge circuit includes resistance R8 to R15, capacitor C3,
Diode D2 and D3, triode Q1 and Q2, metal-oxide-semiconductor Q3 and Q4.Input shaper module input one end connecting resistance R8 and metal-oxide-semiconductor Q3
It drains, after connecing capacitor C3 anode, the one end resistance R9 and triode Q1 emitter after another termination metal-oxide-semiconductor Q3 source electrode of resistance R8 respectively
External alternating current input is connect, metal-oxide-semiconductor Q3 grid meets the one end connecting resistance R10 and diode D2 after capacitor C3 cathode and the resistance R9 other end
Cathode, diode D2 anode connecting resistance R11 are followed by triode Q1 base stage, connecting resistance R13 after triode Q1 collector connecting resistance R12
One end and metal-oxide-semiconductor Q4 grid, output Shaping module export connecting resistance R13 after the one end terminating resistor R14 and triode Q2 emitter
The other end and metal-oxide-semiconductor Q4 source electrode, one end connecting resistance R15 after another terminating diode D3 cathode of resistance R14, diode D3 anode connect
Ground, another termination triode Q2 base stage of resistance R15, the triode Q2 collector connecting resistance R10 other end, metal-oxide-semiconductor Q4 drain electrode connect defeated
Out.When Switching Power Supply is not powered on, all in off state, capacitor C3 is in electric discharge shape by triode Q1 and Q2, metal-oxide-semiconductor Q3 and Q4
State, when Switching Power Supply is powered, external mains input current supplies input shaper module, output Shaping module by resistance R8 current limliting
Output voltage starts to increase, and so that triode Q2 conducting is charged capacitor C3, when C3 both end voltage reaches the threshold voltage of metal-oxide-semiconductor Q3
When metal-oxide-semiconductor Q3 be connected, bypassed resistance R8, low impedance path provided to the input of external alternating current, capacitor C3 both end voltage continues
It increases so that triode Q1 is connected, provides bias for metal-oxide-semiconductor Q2 and turn it on, resistance R9 and R10 enable metal-oxide-semiconductor Q1 and Q2
Interval is slowly connected.So far, Switching Power Supply clean boot is connected with external loading.Foregoing circuit by metal-oxide-semiconductor Q3 and Q4,
Capacitor C3 is connected to after Switching Power Supply energization is stablized with external loading, so that it is electric to effectively eliminate the surge that moment generates that is powered
The influence to external loading is flowed, ensure that the reliable and stable work of circuit.
It takes or uses for reference prior art and can be realized in the part that do not addressed in aforesaid way.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (4)
1. a kind of isolated DC Switching Power Supply of tape starting control, including input shaper module, conversion module, output Shaping mould
Block, control module, protective module and accessory power supply, it is characterised in that: further include starting control module, the starting control module
Input terminal is connected with control module, and starting control module output end is connected with output Shaping module, for according to control module arteries and veins
It rushes signal and generates starting control signal, send to output Shaping module and control；Start control module include starting control circuit and every
From circuit, the starting control circuit is for generating starting control signal, and the isolation circuit is for being isolated starting control circuit
With the electromagnetic interference of output Shaping intermodule.
2. a kind of isolated DC Switching Power Supply of tape starting control according to claim 1, it is characterised in that: the starting
Control circuit includes step circuit, for generating step signal.
3. a kind of isolated DC Switching Power Supply of tape starting control according to claim 2, it is characterised in that: the isolation
Circuit includes signal isolation chip, and the signal isolation chip model is IL711.
4. according to claim 1 to the isolated DC Switching Power Supply that any tape starting described in 3 controls, it is characterised in that: institute
Stating protective module includes anti-surge circuit, and the anti-surge circuit input terminal connects external alternating current and outputs and inputs Shaping Module,
Anti-surge circuit output end connects input shaper module and external loading, for inhibiting the wave of energization moment by soft starting mode
It gushes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920158010.6U CN209267438U (en) | 2019-01-30 | 2019-01-30 | A kind of isolated DC Switching Power Supply of tape starting control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920158010.6U CN209267438U (en) | 2019-01-30 | 2019-01-30 | A kind of isolated DC Switching Power Supply of tape starting control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209267438U true CN209267438U (en) | 2019-08-16 |
Family
ID=67585179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920158010.6U Expired - Fee Related CN209267438U (en) | 2019-01-30 | 2019-01-30 | A kind of isolated DC Switching Power Supply of tape starting control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209267438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609242A (en) * | 2019-10-31 | 2019-12-24 | 安徽江淮汽车集团股份有限公司 | Monomer voltage acquisition circuit, method and device |
| CN112993957A (en) * | 2021-03-19 | 2021-06-18 | 中国电子科技集团公司第二十九研究所 | Circuit and method for inhibiting power-on surge current of high-capacity capacitor |
-
2019
- 2019-01-30 CN CN201920158010.6U patent/CN209267438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609242A (en) * | 2019-10-31 | 2019-12-24 | 安徽江淮汽车集团股份有限公司 | Monomer voltage acquisition circuit, method and device |
| CN112993957A (en) * | 2021-03-19 | 2021-06-18 | 中国电子科技集团公司第二十九研究所 | Circuit and method for inhibiting power-on surge current of high-capacity capacitor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |