CN207542992U - High-integration high-calendering slow starting device - Google Patents
High-integration high-calendering slow starting device Download PDFInfo
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- CN207542992U CN207542992U CN201721502102.9U CN201721502102U CN207542992U CN 207542992 U CN207542992 U CN 207542992U CN 201721502102 U CN201721502102 U CN 201721502102U CN 207542992 U CN207542992 U CN 207542992U
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- 238000003490 calendering Methods 0.000 title abstract 2
- 230000010354 integration Effects 0.000 claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims description 78
- 239000007858 starting material Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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Abstract
The utility model provides a high integration level high calendering delay starting drive can realize high voltage power supply's steady delay simply reliably and start, avoids the high pressure to overshoot the damage to photoelectric detector. The device comprises a direct current power supply VCC, an RC charge-discharge circuit, an MOS tube Q1, an MOS tube Q2, an MOS tube Q3 and a light-operated MOS tube; by adding the slow starting circuit between the high-voltage amplitude control end and the high-voltage power supply, wherein RC charge and discharge, the variable resistance of the MOS tube and the combination of the light-operated MOS tube are utilized, when the grid end of the MOS tube Q1 is an effective high level, the state of the MOS tube Q3 is changed slowly along with the state of the MOS tube Q2, so that the MOS tube in the light-operated MOS tube is switched on, the high-voltage amplitude control end is forced to be pulled to the ground, then the light emitting of the light-emitting diode is gradually weakened, the MOS is switched from on to off, the high-voltage amplitude control end is slowly changed into an effective input end, and then the rear-end.
Description
Technical field
The utility model belongs to high voltage power supply technical field, and in particular to a kind of high voltage power supply soft-start circuit.
Background technology
In streak tube, item booster and x-ray source is medium needs the equipment of high voltage supply, steady to the startup of high voltage power supply
It is qualitative that continuous growth trend is presented.High-voltage switch power supply is opened by the way that error signal is converted into duty cycle control signal driving
It closes and works.In startup stage, error amplifier is in nonequilibrium condition so that loop is in 100% duty ratio, therefore meeting
There is very big surge current to pour into output capacitance so that output voltage generates larger overshoot, causes high voltage power supply itself or item
Line pipe is struck sparks, and may damage the photodetectors such as streak tube.
Output soft start is realized in order to eliminate surge current during startup, and usually there are two types of schemes：One kind is voltage limitation；
Another is current limit.
Voltage limitation is by the voltage value of restraining error amplifier output signal, so as to limit duty ratio during startup.
Traditional method is the soft start voltage ramped up by a current source to capacitor charging, reaches the mesh of soft start
's.This scheme advantage is easy to use, and shortcoming is to need a soft start constant volume to start the time to control, and the capacitance is often very
Greatly, it is impossible to be integrated on chip, this will increase using area and application cost.And control can not be isolated in this soft-start circuit
Signal and high voltage power supply cause system reliability poor.
Current limit is the electric current by detection switch pipe and has current comparison circuit come the electric current of limit switch pipe, elimination
It surges.The maximum value of operating current is generally higher than in view of current limit value, starts just to be likely to result in current limit work
Output overshoot realizes soft start by the stepped method for increasing current limit threshold thus.The shortcomings that this method is to need
Increase current detecting and current comparison circuit, be not suitable for the switching power circuit of no current limit function, and electric current
The switching of limits value is often and unstable.
Utility model content
The purpose of this utility model is to provide a kind of new high pressure delay relaxed starter, can simply and reliablely realize height
The steady delay start of voltage source avoids damage of the high voltage overshoot to photodetector.
The solution of the utility model is as follows：
High integration high pressure delay relaxed starter includes DC power supply VCC, RC charge-discharge circuit, metal-oxide-semiconductor Q1, MOS
Pipe Q2, metal-oxide-semiconductor Q3 and light-operated metal-oxide-semiconductor；The RC charge-discharge circuit includes capacitance C1 and resistance R3, and DC power supply VCC is to capacitance
C1 charges, and capacitance C1 and resistance R3 are connected to DC power supply VCC, while resistance R3 one end is with capacitance C1's through different branches respectively
Anode connects, and the resistance R3 other ends are respectively connected to the drain terminal of metal-oxide-semiconductor Q1 and the grid end of metal-oxide-semiconductor Q2, the negativing ending grounding of capacitance C1；
Control signal of the grid end of metal-oxide-semiconductor Q1 as high integration high pressure delay relaxed starter；The source ground connection of metal-oxide-semiconductor Q1,
So that when control signal is effective high level, metal-oxide-semiconductor Q1 is in the conduction state, in the discharge process of the RC charge-discharge circuit
Under, the grid end voltage of metal-oxide-semiconductor Q2 is slowly reduced from original maximum；The drain terminal of metal-oxide-semiconductor Q2 is connected to DC power supply through resistance R12
The source ground connection of VCC, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q2 form a variable resistance, the variable resistance because of the effect of RC charge-discharge circuit
Bleeder circuit is formed with R12, loading is in the grid end of metal-oxide-semiconductor Q3 after being divided to DC power supply VCC；The drain terminal of metal-oxide-semiconductor Q3 is connected to directly
The source of galvanic electricity source VCC, metal-oxide-semiconductor Q3 are connected through the photodiode in light-operated metal-oxide-semiconductor and are grounded；Metal-oxide-semiconductor Q3 follows metal-oxide-semiconductor Q2 shapes
State changes, and then determines the conducting state of photodiode；Metal-oxide-semiconductor in light-operated metal-oxide-semiconductor postpones as the high integration high pressure
Node is drawn directly through light-operated MOS in relaxed starter control output end between high pressure amplitude control terminal and high voltage power supply input terminal
Metal-oxide-semiconductor series connection ground connection in pipe.
Based on above scheme, the utility model has also further made following optimization：
The grid end of metal-oxide-semiconductor Q1 is additionally provided with the protection voltage-stabiliser tube of ground connection.
RC charge-discharge circuit further includes resistance R1 and resistance R2, and DC power supply VCC is successively through resistance R1, resistance R2 series connections
Ground, the node that the node that described resistance R3 one end is connect with the anode of capacitance C1 is also connect simultaneously for resistance R1 with resistance R2.
The dividing point of aforementioned bleeder circuit is connected to the drain terminal of metal-oxide-semiconductor Q1 through one group of shunt capacitance.The mesh of capacitance is set herein
Mainly further delay delay startup；Multiple capacitances in parallel are compared only with a capacitance, can either be before meet demand
It is smaller (according to single capacitance, then needing the capacitance of large-size) to put occupied space, while has also contemplated redundant configuration.
The branch road that another drain terminals for being connected to metal-oxide-semiconductor Q1 of resistance R3 are finally grounded has been arranged in series resistance R4.
Current-limiting resistance R5 is arranged in series between the source of metal-oxide-semiconductor Q3 and light-operated metal-oxide-semiconductor.Certainly, current-limiting resistance R5 can also
It is arranged on ground terminal.
The utility model has the advantages that：
By adding in soft-start circuit between " high voltage power supply " in " high pressure amplitude control terminal ", wherein utilizing RC charge and discharges
The combination of electricity, metal-oxide-semiconductor resistance value changeable terminals and light-operated metal-oxide-semiconductor, realizes that slow slow start-up time is adjustable, height collection of Phototube Coupling
It is simple and reliable into, high and low voltage isolation.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
As shown in Figure 1, the present embodiment be it is a kind of based on optocoupler control, metal-oxide-semiconductor break-make, the high voltage power supply of RC charge and discharge is soft opens
Dynamic device, by the introducing of the device, the reliable steady delay start for realizing high voltage power supply avoids high voltage overshoot to photodetection
The damage of device.
Traditional high voltage supply is directly powered up high voltage power supply by " high pressure amplitude control terminal ".The utility model leads to
It crosses and highly integrated, delay startup time adjustable circuit is added between " high voltage power supply " in " high pressure amplitude control terminal ", realize
The photodetector (such as image intensifier, striped image converter tube, x-ray source) of required high voltage supply is protected.
As shown in Figure 1, the circuit mainly includes DC power supply VCC, RC charge-discharge circuit, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, MOS
Pipe Q3 and light-operated metal-oxide-semiconductor.RC charge-discharge circuit includes capacitance C1, resistance R1, resistance R2 and resistance R3, and DC power supply VCC is successively
It connects and is grounded through resistance R1, resistance R2, DC power supply VCC charges to capacitance C1, and capacitance C1 and resistance R3 are respectively through different branch
Road is connected to DC power supply VCC, while resistance R3 one end is connect with the anode of capacitance C1, the node of connection simultaneously also for resistance R1 with
The node of resistance R2 connections, the resistance R3 other ends are respectively connected to the drain terminal of metal-oxide-semiconductor Q1 and the grid end of metal-oxide-semiconductor Q2, and capacitance C1's is negative
End ground connection.
The source of metal-oxide-semiconductor Q1 is grounded through resistance R4, under the discharge process of RC charge-discharge circuit, the grid end electricity of metal-oxide-semiconductor Q2
Pressure is slowly reduced from original maximum；The drain terminal of metal-oxide-semiconductor Q2 is connected to DC power supply VCC through resistance R12, and the source of metal-oxide-semiconductor Q2 connects
Ground, for metal-oxide-semiconductor Q2 because the effect of RC charge-discharge circuit forms a variable resistance, which forms bleeder circuit with R12, right
The grid end in metal-oxide-semiconductor Q3 is loaded after DC power supply VCC partial pressures, the dividing point of bleeder circuit is connected to metal-oxide-semiconductor through one group of shunt capacitance
The drain terminal of Q1.
The drain terminal of metal-oxide-semiconductor Q3 is connected to DC power supply VCC, and the source of metal-oxide-semiconductor Q3 is through in current-limiting resistance R5, light-operated metal-oxide-semiconductor
Photodiode series connection ground connection；Metal-oxide-semiconductor Q3 follows metal-oxide-semiconductor Q2 state changes, and then determines the conducting state of photodiode；It is high
Node is drawn between pressure amplitude value control terminal and high voltage power supply input terminal directly to connect ground connection through the metal-oxide-semiconductor in light-operated metal-oxide-semiconductor.
After system power-up, control signal is effective high level, and at this moment Q1 is in the conduction state, the electric discharge of C1 and R3 compositions
Channel causes Q2 grid voltages slowly to be reduced from original maximum, with the reduction of the voltage, Q2 experience " fully on " ---
The state change process namely Q2 of " half be connected " --- " completely switched off " because of one variable resistance of charge and discharge electric forming of C1 and R3,
The variable resistance forms bleeder circuit with R12, and the grid control terminal in Q3 is loaded after being divided to VCC, and similarly, Q3 experience is " completely
Conducting " --- " half the is connected " --- state change process of " completely switched off ", in " fully on " conducting, photodiode hair
Light so that metal-oxide-semiconductor is connected in light-operated metal-oxide-semiconductor, at this moment " high pressure amplitude control terminal " haled in " ", subsequent light emitting diode hair
Light gradually weakens, and MOS becomes ending from being connected, and " high pressure amplitude control terminal " slowly becomes effective input terminal, then rear end high-voltage electricity
Source slowly starts.
The utility model is suitable for high voltage power supply, high-voltage pulse for electric installation, can be widely applied to streak camera, framing
The fields such as phase, X-ray tube.
Claims (6)
1. a kind of high integration high pressure postpones relaxed starter, it is characterised in that：Including DC power supply VCC, RC charge-discharge circuit,
Metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3 and light-operated metal-oxide-semiconductor；
The RC charge-discharge circuit includes capacitance C1 and resistance R3, and DC power supply VCC charges to capacitance C1, capacitance C1 and resistance R3
DC power supply VCC is connected to through different branches respectively, while resistance R3 one end is connect with the anode of capacitance C1, the resistance R3 other ends
It is respectively connected to the drain terminal of metal-oxide-semiconductor Q1 and the grid end of metal-oxide-semiconductor Q2, the negativing ending grounding of capacitance C1；
Control signal of the grid end of metal-oxide-semiconductor Q1 as high integration high pressure delay relaxed starter；The source of metal-oxide-semiconductor Q1 connects
Ground so that when control signal is effective high level, metal-oxide-semiconductor Q1 is in the conduction state, in the electric discharge of the RC charge-discharge circuit
Under effect, the grid end voltage of metal-oxide-semiconductor Q2 is slowly reduced from original maximum；
The drain terminal of metal-oxide-semiconductor Q2 is connected to DC power supply VCC through resistance R12, and the source ground connection of metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q2 is because of RC charge and discharge
The effect of circuit forms a variable resistance, which forms bleeder circuit with R12, adds after being divided to DC power supply VCC
It is loaded in the grid end of metal-oxide-semiconductor Q3；
The drain terminal of metal-oxide-semiconductor Q3 is connected to DC power supply VCC, and the source of metal-oxide-semiconductor Q3 is through the photodiode series connection in light-operated metal-oxide-semiconductor
Ground；Metal-oxide-semiconductor Q3 follows metal-oxide-semiconductor Q2 state changes, and then determines the conducting state of photodiode；Metal-oxide-semiconductor in light-operated metal-oxide-semiconductor
Postpone relaxed starter control output end as the high integration high pressure, between high pressure amplitude control terminal and high voltage power supply input terminal
Node is drawn directly through the metal-oxide-semiconductor series connection ground connection in light-operated metal-oxide-semiconductor.
2. high integration high pressure according to claim 1 postpones relaxed starter, it is characterised in that：The grid end of metal-oxide-semiconductor Q1
It is additionally provided with the protection voltage-stabiliser tube of ground connection.
3. high integration high pressure according to claim 1 postpones relaxed starter, it is characterised in that：The RC charge and discharge electricity
Road further includes resistance R1 and resistance R2, and DC power supply VCC connects through resistance R1, resistance R2 be grounded successively, described resistance R3 one end
The node that the node being connect with the anode of capacitance C1 is also connect simultaneously for resistance R1 with resistance R2.
4. high integration high pressure according to claim 1 postpones relaxed starter, it is characterised in that：The bleeder circuit
Dividing point is connected to the drain terminal of metal-oxide-semiconductor Q1 through one group of shunt capacitance.
5. the high integration high pressure delay relaxed starter according to claim 1 or 4, it is characterised in that：The resistance R3
The branch road that another drain terminal for being connected to metal-oxide-semiconductor Q1 is finally grounded has been arranged in series resistance R4.
6. high integration high pressure according to claim 1 postpones relaxed starter, it is characterised in that：The source of metal-oxide-semiconductor Q3
Current-limiting resistance R5 is arranged in series between light-operated metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721502102.9U CN207542992U (en) | 2017-11-10 | 2017-11-10 | High-integration high-calendering slow starting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721502102.9U CN207542992U (en) | 2017-11-10 | 2017-11-10 | High-integration high-calendering slow starting device |
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| Publication Number | Publication Date |
|---|---|
| CN207542992U true CN207542992U (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721502102.9U Withdrawn - After Issue CN207542992U (en) | 2017-11-10 | 2017-11-10 | High-integration high-calendering slow starting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834835A (en) * | 2017-11-10 | 2018-03-23 | 中国科学院西安光学精密机械研究所 | High-integration high-calendering slow starting device |
| CN114221532A (en) * | 2021-12-16 | 2022-03-22 | 上海商米科技集团股份有限公司 | Discharging circuit, method and intelligent equipment |
-
2017
- 2017-11-10 CN CN201721502102.9U patent/CN207542992U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834835A (en) * | 2017-11-10 | 2018-03-23 | 中国科学院西安光学精密机械研究所 | High-integration high-calendering slow starting device |
| CN107834835B (en) * | 2017-11-10 | 2024-05-31 | 中国科学院西安光学精密机械研究所 | High integration level high calendering slow starting drive |
| CN114221532A (en) * | 2021-12-16 | 2022-03-22 | 上海商米科技集团股份有限公司 | Discharging circuit, method and intelligent equipment |
| CN114221532B (en) * | 2021-12-16 | 2024-04-09 | 上海商米科技集团股份有限公司 | Discharging circuit, method and intelligent device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180626 Effective date of abandoning: 20240531 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180626 Effective date of abandoning: 20240531 |