CN204290764U - A kind of voltage commutation power circuit - Google Patents
A kind of voltage commutation power circuit Download PDFInfo
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- CN204290764U CN204290764U CN201420683407.4U CN201420683407U CN204290764U CN 204290764 U CN204290764 U CN 204290764U CN 201420683407 U CN201420683407 U CN 201420683407U CN 204290764 U CN204290764 U CN 204290764U
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Abstract
The utility model discloses a kind of voltage commutation power circuit, comprise rectification circuit, VIN port, transistor group circuit, input filter circuit and IC1 booster circuit, described transistor group circuit comprises transistor M1, transistor M2, transistor M3 and transistor M4, wherein, the drain electrode of transistor M1 is connected to the positive port of VIN, the source electrode of transistor M1 is connected to drain electrode and the VOUT negative terminal mouth of transistor M2, the source electrode of transistor M2 is connected to VIN negative terminal mouth, the source electrode of transistor M3 is connected to the positive port of VIN, the drain electrode of transistor M3 is connected to source electrode and the positive port of VOUT of transistor M4, the drain electrode of transistor M4 is connected to VIN negative terminal mouth, the grid of transistor M3 is connected to the grid of transistor M1, the grid of transistor M4 is connected to the grid of transistor M2, transistor M1, the grid of transistor M3 is connected to VIN negative terminal mouth, transistor M2, the grid of transistor M4 is connected to the positive port of VIN, the utility model structure is simple, and output voltage stabilization, realizes the conversion from low pressure to high pressure.
Description
Technical field
The utility model relates to power circuit, specifically a kind of voltage commutation power circuit.
Background technology
In order to solve the problem exchanging and turn direct current or prevent the power end of element and the error-polarity connection of earth terminal, usually bridge rectifier can be made to be led back to by different input voltage phases to fixing voltage level, and bridge rectifier output voltage has certain pressure drop, the voltage of the positive pole of output voltage is usually low than the voltage of the positive pole of input voltage, and the voltage of the negative pole of output voltage is usually high than the voltage of the negative pole of input voltage, therefore, actual effective output voltage is few compared with input voltage, this can cause posterior member cannot obtain enough voltage and cannot normally work usually.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, and voltage stabilization, realizes the voltage commutation power circuit of the conversion from low pressure to high pressure, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of voltage commutation power circuit, comprises rectification circuit, VIN port, transistor group circuit, input filter circuit and IC1 booster circuit, described transistor group circuit comprises transistor M1, transistor M2, transistor M3 and transistor M4, wherein, the drain electrode of transistor M1 is connected to the positive port of VIN, the source electrode of transistor M1 is connected to drain electrode and the VOUT negative terminal mouth of transistor M2, the source electrode of transistor M2 is connected to VIN negative terminal mouth, the source electrode of transistor M3 is connected to the positive port of VIN, the drain electrode of transistor M3 is connected to source electrode and the positive port of VOUT of transistor M4, the drain electrode of transistor M4 is connected to VIN negative terminal mouth, the grid of transistor M3 is connected to the grid of transistor M1, the grid of transistor M4 is connected to the grid of transistor M2, transistor M1, the grid of transistor M3 is connected to VIN negative terminal mouth, transistor M2, the grid of transistor M4 is connected to the positive port of VIN, the positive port of described VOUT, VOUT negative terminal mouth are connected with the input of common mode inductance L 2, and common mode inductance L2 output is arranged in parallel input filter circuit, input filter circuit is made up of electrochemical capacitor C11, the positive pole of electrochemical capacitor C11 connects the positive port of VIN, minus earth, IC1 booster circuit is by soft start capacitor C13, bootstrap capacitor C12, chip enable resistance R11, bootstrapping resistance R12 and IC1 integrated device composition, the positive pole of described bootstrap capacitor C12 is connected with the BST port of IC1 integrated device, the negative pole of bootstrap capacitor C12 is connected with one end of bootstrapping resistance R12, the other end of bootstrapping resistance R12 is connected with the SW port of IC1 integrated device, one end of chip enable resistance R11 is connected with the positive pole of input DC power, the other end is connected with the EN port of IC1 integrated device, one end of soft start capacitor C13 is connected with the SS port of IC1 integrated device, other end ground connection, described overvoltage crowbar is made up of resistance R14 and resistance R15, wherein, resistance R14 is connected with one end of resistance R15, and is connected with the V0 port of IC1 integrated device, the other end ground connection of resistance R14, the other end of described resistance R15 connects one end of electric capacity C2 and one end of resistance R6 simultaneously, described output voltage regulation circuit comprises resistance R13 and resistance R16, one end of FB port connecting resistance R13 of IC1 integrated device and one end of resistance R16, the other end ground connection of resistance R13, the other end of resistance R16 connects one end of electric capacity C2 and one end of resistance R6 simultaneously, 1 pin of described high-frequency step-up transformer T11 is connected with the negative pole end of the SW port of IC1 integrated device and sustained diode 11,2 pins of high-frequency step-up transformer T11 and the plus earth of sustained diode 11, the 3 pin mouth ground connection of T11,4 pins of T11 are connected with the positive pole of rectifier diode D12, the positive pole of described rectifier diode D12 is connected with the FB port of high-frequency step-up transformer T11, and the negative pole of rectifier diode D12 is connected with resistance R4, one end of one end contact resistance R4 of high-frequency filter capacitor C14, other end ground connection, the anode of electrochemical capacitor C15 is also connected with electric capacity C2, other end ground connection.
Further, described high frequency booster circuit is made up of high-frequency step-up transformer T11 and sustained diode 11.
Further, described current rectifying and wave filtering circuit is made up of rectifier diode D12, high-frequency filter capacitor C14, electrochemical capacitor C15.
Compared with prior art, the utility model can produce the output voltage similar with input voltage, and when the output voltage is too high, can reduce output voltage, to maintain a stable output voltage by the resistance value controlling transistor; Circuit structure is simple, components and parts are few and reliable and stable, overcome existing one chip withstand voltage on the low side, independently cannot realize the shortcoming that low pressure is changed to high pressure, provide a kind of volume little, output current voltage stabilization, the special driving power of valve positioner of low cost of manufacture, and be core devices by integrated circuit (IC) chip and high-frequency step-up transformer, realize the conversion from low pressure to high pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of voltage commutation power circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of voltage commutation power circuit, comprises rectification circuit, VIN port, transistor group circuit, input filter circuit and IC1 booster circuit, described transistor group circuit comprises transistor M1, transistor M2, transistor M3 and transistor M4, wherein, the drain electrode of transistor M1 is connected to the positive port of VIN, the source electrode of transistor M1 is connected to drain electrode and the VOUT negative terminal mouth of transistor M2, the source electrode of transistor M2 is connected to VIN negative terminal mouth, the source electrode of transistor M3 is connected to the positive port of VIN, the drain electrode of transistor M3 is connected to source electrode and the positive port of VOUT of transistor M4, the drain electrode of transistor M4 is connected to VIN negative terminal mouth, the grid of transistor M3 is connected to the grid of transistor M1, the grid of transistor M4 is connected to the grid of transistor M2, transistor M1, the grid of transistor M3 is connected to VIN negative terminal mouth, transistor M2, the grid of transistor M4 is connected to the positive port of VIN, in work, on transistor group circuit, when the polarity of input voltage VIN is correct (that is there is no reversal connection when transistor group circuit is connected on power supply, the positive port of VIN is high voltage, VIN negative terminal mouth is low-voltage), transistor M2 and transistor M3 meeting conducting, transistor M1 and transistor M4 then can not conducting, therefore, the voltage of the positive port of VOUT can be identical with the positive port of VIN, the voltage of VOUT negative terminal mouth then can be identical with VIN negative terminal mouth, that is output voltage VO UT can very close to input voltage VIN, and problem of pressure drop can not be produced, when the polarity of input voltage VIN incorrect (on the contrary) (that is reverse polarity connection when transistor group circuit is connected on power supply, the positive port of VIN is low-voltage, VIN negative terminal mouth is high voltage), transistor M1 and transistor M4 meeting conducting, transistor M2 and transistor M3 then can not conducting, therefore, the voltage of the positive port of VOUT can be identical with VIN negative terminal mouth, the voltage of VOUT negative terminal mouth then can be identical with the positive port of VIN, that is the polarity of output voltage V OUT remains, and correct (the positive port of VOUT is high voltage, VOUT negative terminal mouth is low-voltage), and its voltage can very close to input voltage VIN, also problem of pressure drop can not be produced, the positive port of described VOUT, VOUT negative terminal mouth are connected with the input of common mode inductance L 2, and common mode inductance L2 output is arranged in parallel input filter circuit, input filter circuit is made up of electrochemical capacitor C11, the positive pole of electrochemical capacitor C11 connects the positive port of VIN, minus earth, IC1 booster circuit is by soft start capacitor C13, bootstrap capacitor C12, chip enable resistance R11, bootstrapping resistance R12 and IC1 integrated device composition, the positive pole of described bootstrap capacitor C12 is connected with the BST port of IC1 integrated device, the negative pole of bootstrap capacitor C12 is connected with one end of bootstrapping resistance R12, the other end of bootstrapping resistance R12 is connected with the SW port of IC1 integrated device, one end of chip enable resistance R11 is connected with the positive pole of input DC power, the other end is connected with the EN port of IC1 integrated device, one end of soft start capacitor C13 is connected with the SS port of IC1 integrated device, other end ground connection, described overvoltage crowbar is made up of resistance R14 and resistance R15, wherein, resistance R14 is connected with one end of resistance R15, and is connected with the V0 port of IC1 integrated device, the other end ground connection of resistance R14, the other end of described resistance R15 connects one end of electric capacity C2 and one end of resistance R6 simultaneously, described output voltage regulation circuit comprises resistance R13 and resistance R16, one end of FB port connecting resistance R13 of IC1 integrated device and one end of resistance R16, the other end ground connection of resistance R13, the other end of resistance R16 connects one end of electric capacity C2 and one end of resistance R6 simultaneously, described high frequency booster circuit is made up of high-frequency step-up transformer T11 and sustained diode 11, wherein, 1 pin of high-frequency step-up transformer T11 is connected with the negative pole end of the SW port of IC1 integrated device and sustained diode 11,2 pins of high-frequency step-up transformer T11 and the plus earth of sustained diode 11, the 3 pin mouth ground connection of T11,4 pins of T11 are connected with the positive pole of rectifier diode D12, described current rectifying and wave filtering circuit is made up of rectifier diode D12, high-frequency filter capacitor C14, electrochemical capacitor C15, wherein, the positive pole of rectifier diode D12 is connected with the FB port of high-frequency step-up transformer T11, the negative pole of rectifier diode D12 is connected with resistance R4, one end of one end contact resistance R4 of high-frequency filter capacitor C14, other end ground connection, the anode of electrochemical capacitor C15 is also connected with electric capacity C2, other end ground connection, in work, is core devices by integrated circuit (IC) chip and high-frequency step-up transformer, input filter circuit and the conversion of IC1 booster circuit realizing circuit from low pressure to high pressure.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. a voltage commutation power circuit, comprises rectification circuit, VIN port, transistor group circuit, input filter circuit and IC1 booster circuit, it is characterized in that, described transistor group circuit comprises transistor M1, transistor M2, transistor M3 and transistor M4, wherein, the drain electrode of transistor M1 is connected to the positive port of VIN, the source electrode of transistor M1 is connected to drain electrode and the VOUT negative terminal mouth of transistor M2, the source electrode of transistor M2 is connected to VIN negative terminal mouth, the source electrode of transistor M3 is connected to the positive port of VIN, the drain electrode of transistor M3 is connected to source electrode and the positive port of VOUT of transistor M4, the drain electrode of transistor M4 is connected to VIN negative terminal mouth, the grid of transistor M3 is connected to the grid of transistor M1, the grid of transistor M4 is connected to the grid of transistor M2, transistor M1, the grid of transistor M3 is connected to VIN negative terminal mouth, transistor M2, the grid of transistor M4 is connected to the positive port of VIN, the positive port of described VOUT, VOUT negative terminal mouth are connected with the input of common mode inductance L 2, and common mode inductance L2 output is arranged in parallel input filter circuit, input filter circuit is made up of electrochemical capacitor C11, the positive pole of electrochemical capacitor C11 connects the positive port of VIN, minus earth, IC1 booster circuit is by soft start capacitor C13, bootstrap capacitor C12, chip enable resistance R11, bootstrapping resistance R12 and IC1 integrated device composition, the positive pole of described bootstrap capacitor C12 is connected with the BST port of IC1 integrated device, the negative pole of bootstrap capacitor C12 is connected with one end of bootstrapping resistance R12, the other end of bootstrapping resistance R12 is connected with the SW port of IC1 integrated device, one end of chip enable resistance R11 is connected with the positive pole of input DC power, the other end is connected with the EN port of IC1 integrated device, one end of soft start capacitor C13 is connected with the SS port of IC1 integrated device, other end ground connection, described overvoltage crowbar is made up of resistance R14 and resistance R15, wherein, resistance R14 is connected with one end of resistance R15, and is connected with the VO port of IC1 integrated device, the other end ground connection of resistance R14, the other end of described resistance R15 connects one end of electric capacity C2 and one end of resistance R6 simultaneously, described output voltage regulation circuit comprises resistance R13 and resistance R16, one end of FB port connecting resistance R13 of IC1 integrated device and one end of resistance R16, the other end ground connection of resistance R13, the other end of resistance R16 connects one end of electric capacity C2 and one end of resistance R6 simultaneously, 1 pin of described high-frequency step-up transformer T11 is connected with the negative pole end of the SW port of IC1 integrated device and sustained diode 11,2 pins of high-frequency step-up transformer T11 and the plus earth of sustained diode 11, the 3 pin mouth ground connection of T11,4 pins of T11 are connected with the positive pole of rectifier diode D12, the positive pole of described rectifier diode D12 is connected with the FB port of high-frequency step-up transformer T11, and the negative pole of rectifier diode D12 is connected with resistance R4, one end of one end contact resistance R4 of high-frequency filter capacitor C14, other end ground connection, the anode of electrochemical capacitor C15 is also connected with electric capacity C2, other end ground connection.
2. voltage commutation power circuit according to claim 1, is characterized in that, described high frequency booster circuit is made up of high-frequency step-up transformer T11 and sustained diode 11.
3. voltage commutation power circuit according to claim 1, is characterized in that, described current rectifying and wave filtering circuit is made up of rectifier diode D12, high-frequency filter capacitor C14, electrochemical capacitor C15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683407.4U CN204290764U (en) | 2014-11-14 | 2014-11-14 | A kind of voltage commutation power circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683407.4U CN204290764U (en) | 2014-11-14 | 2014-11-14 | A kind of voltage commutation power circuit |
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| CN204290764U true CN204290764U (en) | 2015-04-22 |
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| CN201420683407.4U Expired - Fee Related CN204290764U (en) | 2014-11-14 | 2014-11-14 | A kind of voltage commutation power circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985997A (en) * | 2015-06-24 | 2015-10-21 | 蒋晓凡 | Normally-opened type automatic alarm tire pressure measuring device |
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2014
- 2014-11-14 CN CN201420683407.4U patent/CN204290764U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985997A (en) * | 2015-06-24 | 2015-10-21 | 蒋晓凡 | Normally-opened type automatic alarm tire pressure measuring device |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU PAINUO OPTOELECTRONICS TECHNOLOGY CO., LTD Free format text: FORMER NAME: JIANGSU PAINUO OPTOELECTRONICS TECHNOLOGYLTD. |
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| CP03 | Change of name, title or address |
Address after: 226600, Jiangsu Nantong County Haian Economic Development Zone, Haian development avenue and the junction of the east side of the road Patentee after: Jiangsu painuo photoelectric Polytron Technologies Inc Address before: 226000, Jiangsu Nantong County Haian Economic Development Zone, Haian development avenue and the junction of the east side of the road Patentee before: Jiangsu Painuo Optoelectronics Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151114 |
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| EXPY | Termination of patent right or utility model |