CN206041809U - Bipolarity switching power supply - Google Patents
Bipolarity switching power supply Download PDFInfo
- Publication number
- CN206041809U CN206041809U CN201620563443.6U CN201620563443U CN206041809U CN 206041809 U CN206041809 U CN 206041809U CN 201620563443 U CN201620563443 U CN 201620563443U CN 206041809 U CN206041809 U CN 206041809U
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- resistance
- jing
- audion
- control chip
- transformator
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Abstract
The utility model discloses a bipolarity switching power supply, its characterized in that, mainly by control chip U, transformer T, reference voltage circuit, triode VT1, diode D1, polarity electric capacity C7 concatenates the microprocessing circuit between reference voltage circuit and transformer T's primary -side inductance coil L1 to and the constitutions such as ON -OFF control circuit that are connected with control chip U's OUT pin and I pin respectively. The utility model discloses can carry out the automatic adjustment to the voltage of input, effectually ensure the utility model discloses can export stable voltage, thereby improve the utility model discloses accuracy to each item function test of battery protection circuit board.
Description
Technical field
This utility model is related to electronic applications, specifically, is a kind of bipolarity switching power supply.
Background technology
At present, battery manufacturer is typically necessary with bipolar power supply to detect this after battery protection circuit has been made
Whether the various functions of battery protection circuit are up to standard, i.e., realize to battery protection circuit using bipolar power supply
The quickly calibrated and test of over-pressed, under-voltage, excessively stream.The electricity of its power source internal when so-called bipolar power supply refers to the corona discharge
Stream is to flow to positive pole from negative pole, and is to flow to negative pole from positive pole (traditional is general to the electric current of its power source internal during the power source charges
When its internal electric current of energization source all can only flow to positive pole from negative pole, and can not flow to negative pole from positive pole).
But, there are supply voltage unstable properties in the bipolar power supply sold on the market at present, so as to cause to battery
The various functions detection of protection circuit plate is inaccurate, has had a strong impact on using and promoting for its profound level.
Therefore it provides a kind of stable bipolar power supply of power supply performance is the task of top priority.
Utility model content
The purpose of this utility model be overcome bipolar power supply of the prior art exist power supply performance it is unstable lack
Fall into, there is provided a kind of bipolarity switching power supply.
This utility model is achieved through the following technical solutions：A kind of bipolarity switching power supply, mainly by control core
Piece U, transformator T, reference voltage circuit, audion VT1, N poles are connected with the AO pins of control chip U Jing after resistance R11, P
The diode D1 that pole is connected with the base stage of audion VT1, positive pole is connected with the colelctor electrode of audion VT1 Jing after resistance R12,
The polar capacitor C7 of minus earth, P poles are connected with the non-same polarity of transformator T secondary inductance coil L3, N poles Jing polar capacitors
The VCC pins of the diode D5 being connected with the Same Name of Ends of transformator T secondary inductance coil L3 after C6, one end and control chip U
Be connected, the resistance R8 that the other end is connected with reference voltage circuit, be serially connected in the former limit electricity of reference voltage circuit and transformator T
Micro-processor interface circuit between sense coil L1, and the on-off control being connected with the OUT pins and I pins of control chip U respectively
Circuit is constituted；The Same Name of Ends of the emitter stage and control chip U and transformator T former limit inductance coil L2 of the audion VT1 point
It is not connected with reference voltage circuit；The ON-OFF control circuit is connected with the non-same polarity of transformator T former limit inductance coil L2
Connect；The GND pins and RC pins of the control chip U is grounded.
The reference voltage circuit is by amplifier P, audion VT2, base stage phase of the negative pole Jing after resistance R3 with audion VT2
Connection, the polar capacitor C3 that is connected with the anelectrode of amplifier P Jing after resistance R1 of positive pole, positive pole Jing after resistance R7 with audion
The emitter stage of VT2 is connected, the polar capacitor C5 that negative pole is connected with the Same Name of Ends of transformator T former limit inductance coil L1, negative pole
It is connected with the negative input of amplifier P Jing after resistance R6, positive pole is connected with the RC pins of control chip U Jing after resistance R13
The polar capacitor C2 for connecing, is connected with the outfan of amplifier P after negative pole resistance R2, the emitter stage phase of positive pole and audion VT1
The polar capacitor C1 of connection, one end is connected with the negative pole of polar capacitor C1, the other end is connected with the emitter stage of audion VT1
Resistance R9, and one end is connected with the negative pole of polar capacitor C11, the other end is connected with the AO pins of control chip U
Resistance R10 is constituted；The negative electrode ground connection of the amplifier P；The grounded collector of the audion VT2, its emitter stage Jing resistance
It is connected with the VCC pins of control chip U after R8；The VR pins of the control chip U are connected with the positive pole of polar capacitor C2；
The anelectrode of the amplifier P is collectively forming the input of reference voltage circuit with the positive pole of polar capacitor C1；The amplifier P
Electrode input end be connected with micro-processor interface circuit.
The ON-OFF control circuit by field effect transistor MOS, audion VT3, P poles Jing after adjustable resistance R14 with field effect transistor
The grid of MOS is connected, the diode D3 that N poles are connected with the OUT pins of control chip U, the source of negative pole and field effect transistor MOS
Pole is connected, the polar capacitor C9 that positive pole is connected with the I pins of control chip U Jing after resistance R15, positive pole and control chip U
I pins be connected, the polar capacitor C8 of minus earth, one end is connected with the source electrode of field effect transistor MOS, the other end and three poles
The resistance R16 that the base stage of pipe VT3 is connected, N poles are connected with the drain electrode of field effect transistor MOS, P poles Jing after resistance R17 with three poles
The Zener diode D4 that the emitter stage of pipe VT3 is connected, N poles are of the same name with transformator T secondary inductance coil L3 Jing after resistance R20
End is connected, the Zener diode D6 that P poles are connected with the emitter stage of audion VT3 Jing after resistance R18, and one end and polarity
The resistance R19 compositions that the negative pole of electric capacity C6 is connected, the other end is connected with the P poles of Zener diode D6；The audion VT3
Grounded collector；The drain electrode of field effect transistor MOS is connected with the non-same polarity of transformator T former limit inductance coil L2.
The micro-processor interface circuit is connected with the Same Name of Ends of transformator T former limit inductance coil L1 Jing after resistance R5 by N poles, P
The diode D2 that pole is connected with the electrode input end of amplifier P Jing after resistance R4, the electrode input end phase of one end and amplifier P
The inductance L4 that connection, the other end are connected with the Same Name of Ends of transformator T former limit inductance coil L1, and positive pole is with diode D2's
The polar capacitor C4 compositions that P poles are connected, negative pole is connected with the non-same polarity of transformator T former limit inductance coil L1.
For practical effect of the present utility model, the control chip U then preferentially using UC3845 integrated chips come
Realize.
This utility model compared with prior art, with advantages below and beneficial effect：
(1) this utility model can be automatically adjusted to the voltage being input into, and effectively ensure that this utility model can be exported
Stable voltage, so that improve the accuracy that this utility model is detected to the various functions of battery protection circuit.
(2) control chip of the present utility model employs the integrated cores of UC3845, and the chip has blood pressure lowering, voltage stabilizing, may be programmed
The function of current limit and overcurrent protection, ensures that this utility model can export stable voltage.
Description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Specific embodiment
This utility model is described in further detail with reference to embodiment and its accompanying drawing, but reality of the present utility model
Apply mode not limited to this.
Embodiment
As shown in figure 1, this utility model is mainly by control chip U, transformator T, reference voltage circuit, audion VT1, N
The diode D1 that pole is connected with the AO pins of control chip U Jing after resistance R11, P poles are connected with the base stage of audion VT1,
Positive pole is connected with the colelctor electrode of audion VT1 Jing after resistance R12, the polar capacitor C7 of minus earth, P poles and transformator T pairs
The non-same polarity of side inductance coil L3 is connected, Same Name of Ends of the N poles Jing after polar capacitor C6 with transformator T secondary inductance coil L3
The diode D5 being connected, one end is connected with the VCC pins of control chip U, the other end is connected with reference voltage circuit
Resistance R8, the micro-processor interface circuit being serially connected between reference voltage circuit and the former limit inductance coil L1 of transformator T, and respectively with
The ON-OFF control circuit composition that the OUT pins of control chip U are connected with I pins；The emitter stage of the audion VT1 and control
The Same Name of Ends of chip U and transformator T former limit inductance coil L2 is connected with reference voltage circuit respectively；The on-off control electricity
Road is connected with the non-same polarity of transformator T former limit inductance coil L2；The GND pins and RC pins of the control chip U connects
Ground.
Wherein, the reference voltage circuit is by amplifier P, audion VT2, resistance R1, resistance R2, resistance R3, resistance R6,
Resistance R7, resistance R9, resistance R10, resistance R13, polar capacitor C1, polar capacitor C2, polar capacitor C3, and polar capacitor C5
Composition.
During connection, the negative pole of polar capacitor C3 is connected with the base stage of audion VT2 Jing after resistance R3, its positive pole Jing resistance
It is connected with the anelectrode of amplifier P after R1.The positive pole of polar capacitor C5 is connected with the emitter stage of audion VT2 Jing after resistance R7
Connect, its negative pole is connected with the Same Name of Ends of transformator T former limit inductance coil L1.
Meanwhile, the negative pole of polar capacitor C2 is connected with the negative input of amplifier P Jing after resistance R6, its positive pole Jing is electric
It is connected with the RC pins of control chip U after resistance R13.Outfan phase after the negative pole resistance R2 of polar capacitor C1 with amplifier P
Connection, its positive pole are connected with the emitter stage of audion VT1.One end of resistance R9 is connected with the negative pole of polar capacitor C1, which
The other end is connected with the emitter stage of audion VT1.One end of resistance R10 is connected with the negative pole of polar capacitor C11, which is another
End is connected with the AO pins of control chip U.
The negative electrode ground connection of the amplifier P；The grounded collector of the audion VT2, its emitter stage is Jing after resistance R8
It is connected with the VCC pins of control chip U；The VR pins of the control chip U are connected with the positive pole of polar capacitor C2；It is described
The anelectrode of amplifier P is collectively forming the input of reference voltage circuit with the positive pole of polar capacitor C1；The amplifier P is just
Pole input is connected with micro-processor interface circuit and is connected with external power source.
Further, the ON-OFF control circuit is by field effect transistor MOS, audion VT3, adjustable resistance R14, resistance R15,
Resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, polar capacitor C8, polar capacitor C9, diode D3, voltage stabilizing two
Pole pipe D4, and Zener diode D6 compositions.
During connection, the P poles of diode D3 are connected with the grid of field effect transistor MOS Jing after adjustable resistance R14, its N pole with
The OUT pins of control chip U are connected.The negative pole of polar capacitor C9 is connected with the source electrode of field effect transistor MOS, its positive pole Jing is electric
It is connected with the I pins of control chip U after resistance R15.Polar capacitor C8 positive poles are connected with the I pins of control chip U, its negative pole
Ground connection.One end of resistance R16 is connected with the source electrode of field effect transistor MOS, its other end is connected with the base stage of audion VT3.
Meanwhile, the N poles of Zener diode D4 are connected with the drain electrode of field effect transistor MOS, its P pole Jing after resistance R17 with three
The emitter stage of pole pipe VT3 is connected.The N poles of Zener diode D6 are same with transformator T secondary inductance coil L3 Jing after resistance R20
End is connected name, its P pole is connected with the emitter stage of audion VT3 Jing after resistance R18, one end and the polarity electricity of resistance R19
The negative pole of appearance C6 is connected, its other end is connected with the P poles of Zener diode D6.The grounded collector of the audion VT3；
The drain electrode of field effect transistor MOS is connected with the non-same polarity of transformator T former limit inductance coil L2.
Further, the micro-processor interface circuit is by resistance R4, resistance R5, diode D2, inductance L4, and polar capacitor
C4 is constituted.
During connection, the N poles of diode D2 are connected with the Same Name of Ends of transformator T former limit inductance coil L1 Jing after resistance R5,
Its P pole is connected with the electrode input end of amplifier P Jing after resistance R4.One end of inductance L4 and the electrode input end of amplifier P
It is connected, its other end is connected with the Same Name of Ends of transformator T former limit inductance coil L1.The positive pole and diode of polar capacitor C4
The P poles of D2 are connected, its negative pole is connected with the non-same polarity of transformator T former limit inductance coil L1.
During operation, this utility model can be automatically adjusted to the voltage being input into, and effectively ensure that this utility model energy
The stable voltage of output, so that improve the accuracy that this utility model is detected to the various functions of battery protection circuit.Together
When, control chip of the present utility model employs the integrated cores of UC3845, there is the chip blood pressure lowering, voltage stabilizing, programmable current to limit,
And the function of overcurrent protection, ensure that this utility model can export stable voltage.
According to above-described embodiment, you can realize this utility model well.
Claims (5)
1. a kind of bipolarity switching power supply, it is characterised in that main by control chip U, transformator T, reference voltage circuit,
Audion VT1, N pole is connected with the AO pins of control chip U Jing after resistance R11, P poles are connected with the base stage of audion VT1
Diode D1, positive pole is connected with the colelctor electrode of audion VT1 Jing after resistance R12, the polar capacitor C7 of minus earth, P poles
Be connected with the non-same polarity of transformator T secondary inductance coil L3, N poles Jing after polar capacitor C6 with transformator T secondary inductance lines
The diode D5 that is connected of Same Name of Ends of circle L3, one end is connected with the VCC pins of control chip U, the other end and reference voltage
The resistance R8 that circuit is connected, the microprocessor electricity being serially connected between reference voltage circuit and the former limit inductance coil L1 of transformator T
Road, and the ON-OFF control circuit composition being connected with the OUT pins and I pins of control chip U respectively；The audion VT1
Emitter stage and the Same Name of Ends of control chip U and transformator T former limit inductance coil L2 be connected with reference voltage circuit respectively；
The ON-OFF control circuit is connected with the non-same polarity of transformator T former limit inductance coil L2；The GND pipes of the control chip U
Foot and RC pins are grounded.
2. a kind of bipolarity switching power supply according to claim 1, it is characterised in that the reference voltage circuit by
Amplifier P, audion VT2, negative pole is connected with the base stage of audion VT2 Jing after resistance R3, positive pole Jing after resistance R1 with amplification
The polar capacitor C3 that the anelectrode of device P is connected, positive pole is connected with the emitter stage of audion VT2 Jing after resistance R7, negative pole with
The polar capacitor C5 that the Same Name of Ends of transformator T former limit inductance coil L1 is connected, negative pole of the negative pole Jing after resistance R6 with amplifier P
Input is connected, the polar capacitor C2 that positive pole is connected with the RC pins of control chip U Jing after resistance R13, negative pole resistance R2
Be connected with the outfan of amplifier P afterwards, the polar capacitor C1 that positive pole is connected with the emitter stage of audion VT1, one end and pole
Property electric capacity C1 negative pole be connected, the resistance R9 that the other end is connected with the emitter stage of audion VT1, and one end and polarity electricity
The resistance R10 compositions that the negative pole of appearance C11 is connected, the other end is connected with the AO pins of control chip U；The amplifier P's
Negative electrode is grounded；The grounded collector of the audion VT2, VCC pin phase of its emitter stage Jing after resistance R8 with control chip U
Connection；The VR pins of the control chip U are connected with the positive pole of polar capacitor C2；The anelectrode of the amplifier P and polarity
The positive pole of electric capacity C1 is collectively forming the input of reference voltage circuit；The electrode input end and micro-processor interface circuit of the amplifier P
It is connected.
3. a kind of bipolarity switching power supply according to claim 2, it is characterised in that the ON-OFF control circuit by
Field effect transistor MOS, audion VT3, P poles are connected with the grid of field effect transistor MOS Jing after adjustable resistance R14, N poles with control core
The diode D3 that the OUT pins of piece U are connected, negative pole is connected with the source electrode of field effect transistor MOS, positive pole Jing after resistance R15 with
The polar capacitor C9 that the I pins of control chip U are connected, positive pole is connected with the I pins of control chip U, the pole of minus earth
Property electric capacity C8, one end is connected with the source electrode of field effect transistor MOS, the resistance that the other end is connected with the base stage of audion VT3
R16, N pole is connected with the drain electrode of field effect transistor MOS, P poles are steady with what the emitter stage of audion VT3 was connected Jing after resistance R17
Pressure diode D4, N poles are connected with the Same Name of Ends of transformator T secondary inductance coil L3 Jing after resistance R20, P poles are Jing after resistance R18
The Zener diode D6 being connected with the emitter stage of audion VT3, and one end be connected with the negative pole of polar capacitor C6, it is another
The resistance R19 compositions that end is connected with the P poles of Zener diode D6；The grounded collector of the audion VT3；Field effect transistor
The drain electrode of MOS is connected with the non-same polarity of transformator T former limit inductance coil L2.
4. a kind of bipolarity switching power supply according to claim 3, it is characterised in that the micro-processor interface circuit is by N
Pole is connected with the Same Name of Ends of transformator T former limit inductance coil L1 Jing after resistance R5, P poles Jing after resistance R4 with amplifier P just
The diode D2 that pole input is connected, one end is connected with the electrode input end of amplifier P, the other end and transformator T former limits
The inductance L4 that the Same Name of Ends of inductance coil L1 is connected, and positive pole be connected with the P poles of diode D2, negative pole and transformator T
The polar capacitor C4 compositions that the non-same polarity of former limit inductance coil L1 is connected.
5. a kind of bipolarity switching power supply according to claim 4, it is characterised in that the control chip U is
UC3845 integrated chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563443.6U CN206041809U (en) | 2016-06-12 | 2016-06-12 | Bipolarity switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563443.6U CN206041809U (en) | 2016-06-12 | 2016-06-12 | Bipolarity switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206041809U true CN206041809U (en) | 2017-03-22 |
Family
ID=58312491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620563443.6U Expired - Fee Related CN206041809U (en) | 2016-06-12 | 2016-06-12 | Bipolarity switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206041809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808531A (en) * | 2021-06-25 | 2021-12-17 | 博发电子股份有限公司 | Single-inductor buck-boost bipolar multi-output converter and control method thereof |
-
2016
- 2016-06-12 CN CN201620563443.6U patent/CN206041809U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808531A (en) * | 2021-06-25 | 2021-12-17 | 博发电子股份有限公司 | Single-inductor buck-boost bipolar multi-output converter and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20170612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |