CN207910682U - A kind of startup time-adjustable power module - Google Patents
A kind of startup time-adjustable power module Download PDFInfo
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- CN207910682U CN207910682U CN201721882106.4U CN201721882106U CN207910682U CN 207910682 U CN207910682 U CN 207910682U CN 201721882106 U CN201721882106 U CN 201721882106U CN 207910682 U CN207910682 U CN 207910682U
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Abstract
The utility model discloses a kind of startup time-adjustable power modules, the power module is by metal shell, DC/DC power conversion circuits, input terminal starts time control circuit, input terminal and the integrated composition of output end common mode filtering circuit, using the frame mode of metal shell full-shield, power input and output end increase filter circuit and realize the index with extremely low ripple, DC/DC power conversion circuits realize input terminal and output end electrical isolation, output power and voltage conversion function, input terminal starts time control circuit and realizes that power module starts time control adjustable function.The utility model realizes below single channel maximum 15W power and under the requirement of performance level, power module starts time control circuit, input terminal by metal shell, DC/DC power conversion circuits, input terminal and output end common mode filtering circuit is integrated constitutes, have the function of relatively strong anti-Electro Magnetic Compatibility, input terminal start time control, Ultra-High Efficiency, single channel can different voltages and power output, to meet to power module there is input terminal to start the time is adjustable, has the occasion of higher reliability, EMC Requirements.
Description
Technical field
The utility model is related to a kind of startup time-adjustable power modules
Background technology
In certain occasions for having particular/special requirement, there is control to have startup sequential multigroup secondary power supply module of rear class power supply
The functional requirement of output end can lower secondary power supply module in the impact of a power supply of moment pair that is powered, avoid in this way
Faradic impact, it is ensured that whole system energy steady operation.The soft start pin of prior art chip in order to control can be into
Row starts the adjustment of time 1mS-50mS, but is difficult to meet the requirements, or use number for there is the requirement of long period 1S or more
Word control circuit realizes the startup time adjustable control of multigroup secondary power supply module, and such resolution circuitry is complex, cost
It is higher, for finite volume in the case of, it is difficult to meet the requirements, so a kind of startups time-adjustable power module of research and development, has
Have small, component number is less, at low cost, modularized design.
Utility model content
The utility model technical issues that need to address, which are that, to be overcome the deficiencies of existing technologies, and a kind of startup time is provided
Adjustable electric source module, shell mechanism, input terminal and the output end shielded using all-metal, which increases filter circuit, to be made it have
Better Electro Magnetic Compatibility, DC/DC power conversion circuits realize input terminal and output end electrical isolation, output end power and voltage
Output end different voltages and the function of different capacity may be implemented in conversion function, output end, and input terminal starts time control circuit
Realize that input terminal starts control adjustable function.
To solve the above problems, the utility model adopts the following technical solution：
A kind of startup time-adjustable power module, input terminal are isolated with output end, the shell knot shielded using all-metal
Structure, input terminal and output end increase filter circuit and make it have better Electro Magnetic Compatibility, the realization of DC/DC power conversion circuits
Output end different voltages may be implemented in input terminal and output end electrical isolation, output end power and voltage conversion function, output end
With the function of different capacity, input terminal starts time control circuit and realizes that input terminal starts control adjustable function, power module tool
Have and start adjustable control, Ultra-High Efficiency, high reliability compared with strong electromagnetic compatibility, input terminal, power input terminal voltage covers DC9-
DC80V, output end voltage cover DC3.3V-DC36V, and maximum output end power is 15W.
Power input, output end are isolation method, and isolation voltage is not less than DC500V.
Power input and output end increase the integrated all-metal of filter circuit and shield shelling machine mode, the electricity having
Magnetic compatibility.
DC/DC power conversion circuits realize that output end may be implemented not in output end power and voltage conversion function, output end
With the function of voltage.
Input terminal starts time control circuit and realizes that input terminal starts control tunable characteristic.
Power input terminal voltage covers DC9-DC80V, and output end voltage covers DC3.3V-DC36V, maximum output end work(
Rate is 15W.
Power module control chip U2 has under-voltage protection function pin ULVO, when power module is powered, passes through input terminal point
To one voltage signal of grid of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q3 conducting will control the under-voltage protection electricity of chip by piezoresistance R5, R6 and R7
R9 and R10 short circuits in road, control chip UVLO pin voltages are 0V, and power module under-voltage protection is without output end, so power supply
Without output end voltage when module is powered；A stabilizing circuit is formed by resistance R1, voltage-stabiliser tube DW1 and triode Q1, and stabilization is provided
12V voltages, 12V voltages are isolated by two diodes, give capacitance C3 to charge by resistance R2, when capacitance C3 capacitor chargings
When voltage reaches the threshold voltage of metal-oxide-semiconductor Q2 grids, metal-oxide-semiconductor Q2 conductings, and the other end of 12V is powered to optocoupler, the hair of optocoupler
Optical diode part is connected with metal-oxide-semiconductor Q2, and when metal-oxide-semiconductor Q2 is connected, the LEDs ON inside optocoupler U1 shines, this
When the optocoupler U1 other ends triode portion be also switched on, collector and the metal-oxide-semiconductor Q3 phases of the triode portion of the optocoupler U1 other ends
Even, emitter ground connection, when the conducting of the triode portion of the optocoupler U1 other ends, by the grid voltage in metal-oxide-semiconductor Q2 down for 0V,
Metal-oxide-semiconductor Q2 is not turned on, and control chip U2 has in under-voltage protection function pin ULVO circuits provides one by R8, R9 and R10 partial pressure
A DC1.25V voltages required higher than under-voltage protection, power module do not enter under-voltage protection state, restore normal output；It is logical
It crosses resistance R2 to charge to capacitance C3, it is external shunt capacitance end, external capacitor amount of capacity that two draw pins are drawn at the both ends capacitance C3
Realize the extension of C3 capacitances, when the extension of C3 capacitances is bigger, 12V voltages are longer to the C3 charging time by resistance R2, into
The time for entering to meet the threshold voltage of metal-oxide-semiconductor Q2 grids is elongated, by described in the control principle that is set forth above, the power supply mould of realization
Block starts time-adjustable.
Advantageous effect
1, power module shell uses metal shell, and input terminal increases filter circuit with output end has good electromagnetism simultaneous
Capacitive.
2, power module input terminal control circuit, which is realized, starts time-adjustable.
3, standardization, tandem product design, are suitable for the parameters such as most of input terminal voltage, output end voltage and power
It is required that adaptability is wider.
Description of the drawings
Fig. 1 is that the control of chip soft start pin starts time adjustable scheme；
Fig. 2 is that digital circuit starts time adjustable scheme；
Fig. 3, Fig. 4 are a kind of startup time regulated power supply module circuit diagram；
Fig. 5 specific implementations start conditioned circuit diagram；
Fig. 6 and Fig. 7 is a kind of startup time-adjustable power module outline drawing；
Digital control circuit realizes that the startup time adjustable control of multigroup secondary power supply module is shown in Fig. 2.
Specific implementation mode
Embodiment 1
It shines as shown in Fig. 2, controlling the conducting of optocoupler internal body diodes by one group of output end high level of digital control circuit,
Triode is connected, R1 and R2 short circuits are divided and give metal-oxide-semiconductor Q1 grids one voltage, and metal-oxide-semiconductor conducting, power module 1 has output end
Voltage；Similarly power module outlet voltage is also controlled by digital control circuit, passes through digital control circuit internal output terminal
The startup time of the corresponding power module of startup time control of high level, design that circuit is complicated, and cost is higher in this way, volume compared with
Greatly.
A kind of startup time-adjustable power module is increased using the shell mechanism, input terminal and output end of all-metal shielding
Filter circuit has been added to make it have better Electro Magnetic Compatibility, DC/DC power conversion circuits realize that input terminal and output end are electrical
Isolation, output end power and voltage conversion function, output end different voltages and the function of different capacity may be implemented in output end, defeated
Enter end and start time control circuit realization input terminal startup control adjustable function, circuit diagram is shown in Fig. 3 and Fig. 4.
Start time control circuit for input terminal in dotted line frame and sees Fig. 5.
Power module control chip U2 has under-voltage protection function pin ULVO, when power module is powered, passes through input terminal point
To one voltage signal of grid of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q3 conducting will control the under-voltage protection electricity of chip by piezoresistance R5, R6 and R7
R9 and R10 short circuits in road, control chip UVLO pin voltages are 0V, and power module under-voltage protection is without output end, so power supply
Without output end voltage when module is powered.
A stabilizing circuit is formed by resistance R1, voltage-stabiliser tube DW1 and triode Q1, and stable 12V voltages, 12V electricity are provided
Pressure is isolated by two diodes, is charged to capacitance C3 by resistance R2, when capacitance C3 capacitor charging voltages reach metal-oxide-semiconductor Q2
When the threshold voltage of grid, metal-oxide-semiconductor Q2 conducting, and the other end of 12V gives optocoupler power supply, the light emitting diode part of optocoupler with
Metal-oxide-semiconductor Q2 is connected, and when metal-oxide-semiconductor Q2 is connected, the LEDs ON inside optocoupler U1 shines, at this time the optocoupler U1 other ends
Triode portion be also switched on, the collector of the triode portion of the optocoupler U1 other ends is connected with metal-oxide-semiconductor Q3, emitter ground connection,
When the conducting of the triode portion of the optocoupler U1 other ends, the grid voltage in metal-oxide-semiconductor Q2 is not turned on down for 0V, metal-oxide-semiconductor Q2,
Control chip U2 has in under-voltage protection function pin ULVO circuits provides one higher than under-voltage protection by R8, R9 and R10 partial pressure
It is required that DC1.25V voltages, power module do not enter under-voltage protection state, restores normal output.
It is charged to capacitance C3 by resistance R2, it is external shunt capacitance end, external electricity that two draw pins are drawn at the both ends capacitance C3
Hold amount of capacity realize C3 capacitances extension, when C3 capacitances extend it is bigger, when 12V voltages are charged by resistance R2 to C3
Between it is longer, the time into the threshold voltage for meeting metal-oxide-semiconductor Q2 grids is elongated, real by described in the control principle that is set forth above
Existing power module starts time-adjustable.
Power module input terminal and output end filter common mode inductance use Superfine crystal material, and due to Integrated design,
It matches and is optimal in efficiency, better filter action is realized under smaller volume, there is good anti-conduction electromagnetism
Compatibility.
The outline drawing of power module is shown in Fig. 6 and Fig. 7.
The soft start pin control of existing control chip starts the scheme of time and sees Fig. 1, by adjusting control chip SS feet
The size of direct-to-ground capacitance capacity realizes that the time length that power module starts is adjustable, and general design in this way starts the time to very short and small
In 50mS, chip interior provides the electric current of SS feet in order to control, if control chip SS foot direct-to-ground capacitance capacity is excessive, SS feet are to electricity
Capacity charge needs larger current, in this way design control chip interior transistor to be difficult to bear larger current, and control chip was easy
Stream damage.
Claims (2)
1. a kind of startup time-adjustable power module, it is characterised in that：Input terminal is isolated with output end, is shielded using all-metal
Shell mechanism, input terminal and output end increase filter circuit and make it have better Electro Magnetic Compatibility, DC/DC power conversions
Circuit realizes input terminal and output end electrical isolation, output power and voltage conversion function, and it is different that output may be implemented in output end
The function of voltage and different capacity, input terminal start time control circuit and realize that input terminal starts control adjustable function, power supply mould
Block input terminal, which starts, controls adjustable, power input voltage covering DC9-DC80V, output voltage covering DC3.3V-DC36V, most
Big output power is 15W；
Power module control chip U2 has under-voltage protection function pin ULVO, and when power module is powered, electricity is divided by input terminal
One voltage signal of grid of R5, R6 and R7 to metal-oxide-semiconductor Q3 is hindered, metal-oxide-semiconductor Q3 conductings will be in the under-voltage protecting circuit that control chip
R9 and R10 short circuits, control chip UVLO pin voltages are 0V, and power module under-voltage protection is without output, so power module is logical
Without output voltage when electric；A stabilizing circuit is formed by resistance R1, voltage-stabiliser tube DW1 and triode Q1, and stable 12V electricity is provided
Pressure, 12V voltages are isolated by two diodes, are charged to capacitance C3 by resistance R2, when capacitance C3 capacitor charging voltages reach
To metal-oxide-semiconductor Q2 grids threshold voltage when, metal-oxide-semiconductor Q2 conducting, and the other end of 12V gives optocoupler power supply, the light-emitting diodes of optocoupler
Tube portion is connected with metal-oxide-semiconductor Q2, and when metal-oxide-semiconductor Q2 is connected, the LEDs ON inside optocoupler U1 shines, at this time optocoupler
The triode portion of the U1 other ends is also switched on, and the collector of the triode portion of the optocoupler U1 other ends is connected with metal-oxide-semiconductor Q3, transmitting
Pole is grounded, when the conducting of the triode portion of the optocoupler U1 other ends, by the grid voltage in metal-oxide-semiconductor Q2 down for 0V, metal-oxide-semiconductor Q2
It is not turned on, control chip U2 has in under-voltage protection function pin ULVO circuits provides one higher than deficient by R8, R9 and R10 partial pressure
The DC1.25V voltages that pressure protection requires, power module do not enter under-voltage protection state, restore normal output；It is given by resistance R2
Capacitance C3 chargings, it is external shunt capacitance end that two draw pins are drawn at the both ends capacitance C3, and external capacitor amount of capacity realizes C3 capacitances
Capacity extension, when C3 capacitances extend bigger, 12V voltages are longer to the C3 charging time by resistance R2, into meeting metal-oxide-semiconductor
The time of the threshold voltage of Q2 grids is elongated.
2. a kind of startup time-adjustable power module as described in claim 1, characteristic are：Power input output for every
From mode, isolation voltage is not less than DC500V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721882106.4U CN207910682U (en) | 2017-12-28 | 2017-12-28 | A kind of startup time-adjustable power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721882106.4U CN207910682U (en) | 2017-12-28 | 2017-12-28 | A kind of startup time-adjustable power module |
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| Publication Number | Publication Date |
|---|---|
| CN207910682U true CN207910682U (en) | 2018-09-25 |
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ID=63569068
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721882106.4U Active CN207910682U (en) | 2017-12-28 | 2017-12-28 | A kind of startup time-adjustable power module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979290A (en) * | 2017-12-28 | 2018-05-01 | 航天长峰朝阳电源有限公司 | One kind starts time-adjustable power module |
| CN114400881A (en) * | 2021-11-29 | 2022-04-26 | 固赢科技(深圳)有限公司 | Drive IC power supply time sequence control circuit and coating power supply |
-
2017
- 2017-12-28 CN CN201721882106.4U patent/CN207910682U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979290A (en) * | 2017-12-28 | 2018-05-01 | 航天长峰朝阳电源有限公司 | One kind starts time-adjustable power module |
| CN114400881A (en) * | 2021-11-29 | 2022-04-26 | 固赢科技(深圳)有限公司 | Drive IC power supply time sequence control circuit and coating power supply |
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