CN105978345A - Current-enhanced bipolar switch stabilized voltage supply - Google Patents
Current-enhanced bipolar switch stabilized voltage supply Download PDFInfo
- Publication number
- CN105978345A CN105978345A CN201610408289.XA CN201610408289A CN105978345A CN 105978345 A CN105978345 A CN 105978345A CN 201610408289 A CN201610408289 A CN 201610408289A CN 105978345 A CN105978345 A CN 105978345A
- Authority
- CN
- China
- Prior art keywords
- pole
- resistance
- audion
- polar capacitor
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
- H02M1/0022—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being input voltage fluctuations
Abstract
The invention discloses a current-enhanced bipolar switch stabilized voltage supply. The current-enhanced bipolar switch stabilized voltage supply is characterized by mainly comprising a control chip U1, a transformer T, a reference voltage circuit, a triode VT1, a diode D1, a polar capacitor C7, a triode current expansion circuit, a microprocessor circuit, a voltage regulation circuit, a switch control circuit and the like, wherein the triode current expansion circuit is connected with an OUT pin of the control chip U1; the microprocessor circuit is connected between the reference voltage circuit and a primary induction coil L1 of the transformer T in series; the voltage regulation circuit is connected between the reference voltage circuit and a VCC pin of the control chip U1 in series; and the switch control circuit is connected with the OUT pin and an I pin of the control chip U1 separately. According to the current-enhanced bipolar switch stabilized voltage supply, the input voltage can be automatically regulated; and the condition that the current-enhanced bipolar switch stabilized voltage supply can output stable voltage is effectively ensured, so that the detection accuracy on various functions of a battery protection circuit board is improved.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of intensifying current formula bipolarity switching power supply.
Background technology
At present, battery manufacturer is typically necessary after having made battery protection circuit and comes with bipolar power supply
The various functions detecting this battery protection circuit is the most up to standard, i.e. uses bipolar power supply to realize right
The overvoltage of battery protection circuit, quickly calibrated and test under-voltage, stream excessively.So-called bipolar power supply is
Refer to that during this corona discharge, the electric current of its power source internal is to flow to positive pole from negative pole, and to its electricity during this power source charges
Electric current within source is to flow to negative pole from positive pole (no matter its internal electric current of traditional common power is in what feelings
All can only flow to positive pole from negative pole under condition, and negative pole can not be flowed to from positive pole).But, institute the most on the market
The bipolar power supply sold exists for the problem of piezoelectric voltage unstable properties, thus causes battery protecting circuit
The various functions detection of plate is inaccurate, has had a strong impact on using and promoting of its profound level.
Therefore it provides the stable bipolar power supply of a kind of power supply performance is the task of top priority.
Summary of the invention
It is an object of the invention to overcome bipolar power supply of the prior art to exist for unstable the lacking of electrical property
Fall into, it is provided that a kind of intensifying current formula bipolarity switching power supply.
The present invention is achieved through the following technical solutions: a kind of intensifying current formula bipolarity switching power supply,
Main by control chip U1, transformator T, reference voltage circuit, audion VT1, with control chip U's
Audion that OUT pin is connected expands current circuit, N pole after resistance R11 with the AO of control chip U1
The diode D1 that pin is connected, P pole is connected with the base stage of audion VT1, positive pole is after resistance R12
Be connected with the colelctor electrode of audion VT1, polar capacitor C7, the P pole of minus earth and transformator T secondary
The non-same polarity of inductance coil L3 is connected, N pole after polar capacitor C6 with transformator T secondary inductance line
The diode D5 that the Same Name of Ends of circle L3 is connected, is serially connected in the VCC of reference voltage circuit and control chip U1
Voltage-regulating circuit between pin, one end is connected with the VCC pin of control chip U1, the other end with
The resistance R8 that voltage-regulating circuit is connected, is serially connected in the former limit inductor wire of reference voltage circuit and transformator T
Micro-processor interface circuit between circle L1, and expand current circuit and the I pin phase of control chip U with audion respectively
The ON-OFF control circuit composition connected；The emitter stage of described audion VT1 and control chip U1 and transformation
The Same Name of Ends of device T former limit inductance coil L2 is connected with reference voltage circuit respectively；Described ON-OFF control circuit
The non-same polarity of limit inductance coil L2 former with transformator T is connected；The GND pipe of described control chip U1
Foot and the equal ground connection of RC pin.
Described audion expands current circuit by audion VT5, audion VT6, audion VT7, amplifier
P2, positive pole electrode input end with amplifier P2 after resistance R33 is connected, negative pole is after resistance R32
Polar capacitor C13, the N pole of ground connection is connected with the positive pole of polar capacitor C13, P pole is after resistance R34
The diode D10 being connected with the emitter stage of audion VT5, positive pole after resistance R35 with diode D10
The polar capacitor that P pole is connected, negative pole colelctor electrode with audion VT6 after resistance R38 is connected
C15, negative pole colelctor electrode with audion VT7 after resistance R40 is connected, positive pole after resistance R37 with
The polar capacitor C14 that the negative input of amplifier P2 is connected, the colelctor electrode phase of one end and audion VT7
Connect, resistance R45, the N pole of other end ground connection is connected with the base stage of audion VT7, P pole is through resistance
The diode D12 that after R41, base stage with audion VT6 is connected, positive pole after resistance R39 with amplifier
The pole that the outfan of P2 is connected, negative pole emitter stage with audion VT7 after adjustable resistance R44 is connected
Property electric capacity C16, N pole colelctor electrode with audion VT5 after resistance R36 is connected, P pole is through resistance R42
The diode D11 that emitter stage with audion VT6 is connected afterwards, and the transmitting of one end and audion VT6
The resistance R43 composition that pole is connected, the other end is connected with the negative pole of polar capacitor C16；Described audion
The base stage of VT5 is connected with the electrode input end of amplifier P2；The positive pole of described polar capacitor C13 is as three
Pole pipe expands the input of current circuit and is connected with the OUT pin of control chip U；Described audion VT7
Emitter stage expand the outfan of current circuit as audion and be connected with ON-OFF control circuit.
Described voltage-regulating circuit by voltage stabilizing chip U2, audion VT4, positive pole after resistance R22 with steady
Pressure chip U2 VIN pin be connected, negative pole as voltage-regulating circuit input and and reference voltage
The polar capacitor C10 that circuit is connected, positive pole sequentially after resistance R23 and resistance R24 with polar capacitor C10
The polarity electricity that positive pole is connected, negative pole ADJ pin with voltage stabilizing chip U2 after resistance R25 is connected
Holding C11, one end is connected with the ADJ pin of control chip U2, the base stage of the other end and audion VT4
The adjustable resistance R26 being connected, positive pole VOUT pin with voltage stabilizing chip U2 after resistance R27 is connected
Connect, polar capacitor C12, P pole that negative pole is connected with the emitter stage of audion VT4 after resistance R30 with
The positive pole of polar capacitor C12 is connected, N pole colelctor electrode with audion VT4 after resistance R28 is connected
Diode D9, P pole be connected with the positive pole of polar capacitor C12, N pole after resistance R29 with diode
The Zener diode D8 that the N pole of D9 is connected, and P pole after resistance R21 with polar capacitor C10's
The diode D7 group that positive pole is connected, N pole is connected with the P pole of Zener diode D8 after resistance R31
Become；The N pole of described diode D9 be connected with the negative pole of polar capacitor C11 after ground connection；Described voltage stabilizing two
The N pole of pole pipe D8 as the outfan of voltage-regulating circuit and after resistance R8 with control chip U1's
VCC pin is connected.
Described reference voltage circuit by amplifier P1, audion VT2, negative pole after resistance R3 with audion
The polar capacitor that the base stage of VT2 is connected, positive pole anelectrode with amplifier P1 after resistance R1 is connected
C3, positive pole is connected with the emitter stage of audion VT2 after resistance R7, negative pole is electric with the former limit of transformator T
The polar capacitor C5 that is connected of Same Name of Ends of sense coil L1, negative pole negative with amplifier P1 after resistance R6
The polarity electricity that pole input is connected, positive pole is connected with the RC pin of control chip U1 after resistance R13
Holding C2, after negative pole resistance R2, the outfan with amplifier P1 is connected, positive pole is sent out with audion VT1's
The polar capacitor C1 that emitter-base bandgap grading is connected, one end is connected with the negative pole of polar capacitor C1, the other end and three poles
The resistance R9 that the emitter stage of pipe VT1 is connected, and one end is connected, separately with the negative pole of polar capacitor C11
The resistance R10 composition that one end is connected with the AO pin of control chip U1；The negative electricity of described amplifier P1
Pole ground connection；The grounded collector of described audion VT2, its emitter stage is connected with the negative pole of polar capacitor C10
Connect；The VR pin of described control chip U1 is connected with the positive pole of polar capacitor C2；Described amplifier P1
The positive pole of anelectrode and polar capacitor C1 be collectively forming the input of reference voltage circuit；Described amplifier
The electrode input end of P1 is connected with micro-processor interface circuit.
Described ON-OFF control circuit is by field effect transistor MOS, and audion VT3, P pole is through adjustable resistance R14
Be connected with the grid of field effect transistor MOS afterwards, two poles that N pole is connected with the emitter stage of audion VT7
Pipe D3, negative pole is connected with the source electrode of field effect transistor MOS, positive pole after resistance R15 with control chip U1
The polar capacitor C9 that is connected of I pin, positive pole is connected with the I pin of control chip U1, minus earth
Polar capacitor C8, one end is connected with the source electrode of field effect transistor MOS, the other end and audion VT3
Resistance R16, the N pole that base stage is connected is connected with the drain electrode of field effect transistor MOS, P pole is through resistance R17
Zener diode D4, the N pole that emitter stage with audion VT3 is connected afterwards after resistance R20 with transformation
The Same Name of Ends of device T secondary inductance coil L3 is connected, P pole after resistance R18 with audion VT3 send out
The Zener diode D6 that emitter-base bandgap grading is connected, and one end is connected with the negative pole of polar capacitor C6, the other end
The resistance R19 composition being connected with the P pole of Zener diode D6；The colelctor electrode of described audion VT3 connects
Ground；The non-same polarity of the drain electrode of field effect transistor MOS limit former with transformator T inductance coil L2 is connected.
Described micro-processor interface circuit is by N pole limit inductance coil L1 former with transformator T of the same name after resistance R5
The diode D2 that end is connected, P pole electrode input end with amplifier P1 after resistance R4 is connected, one
End be connected with the electrode input end of amplifier P1, other end limit former with transformator T inductance coil L1 same
The name inductance L4 that is connected of end, and positive pole is connected with the P pole of diode D2, negative pole and transformator T
The polar capacitor C4 composition that the non-same polarity of former limit inductance coil L1 is connected.
For the practical effect of the present invention, described control chip U1 the most preferentially uses UC3845 integrated
Chip realizes；The most described voltage stabilizing chip U2 the most preferentially have employed the integrated chip of LM317T and realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) voltage of input can be automatically adjusted by the present invention, effectively ensure that the present invention can export surely
Fixed voltage, thus improve the accuracy that the various functions of battery protection circuit is detected by the present invention.
(2) present invention can effectively improve the intensity of electric current, load capacity is expanded and flow to more than 10A, thus
The present invention can export stable powerful voltage x current, and improve the present invention can be to battery protecting circuit simultaneously
Plate detects accurately.
(3) voltage pulsation of input can be adjusted by the present invention, makes voltage keep stable, ensures that
The present invention can export stable voltage.
(4) control chip of the present invention have employed the integrated core of UC3845, this chip have blood pressure lowering, voltage stabilizing,
Programmable current limits and the function of overcurrent protection, ensures that the present invention can export stable electricity
Pressure.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the voltage-regulating circuit of the present invention.
Fig. 3 is the electrical block diagram of the audion expansion current circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U1, transformator T, reference voltage circuit, three poles
Pipe VT1, the audion being connected with the OUT pin of control chip U expands current circuit, and N pole is through resistance R11
Be connected with the AO pin of control chip U1 afterwards, diode that P pole is connected with the base stage of audion VT1
D1, positive pole colelctor electrode with audion VT1 after resistance R12 is connected, the polar capacitor of minus earth
C7, P pole is connected with the non-same polarity of transformator T secondary inductance coil L3, N pole is through polar capacitor C6
The diode D5 that Same Name of Ends with transformator T secondary inductance coil L3 is connected afterwards, is serially connected in reference voltage
Voltage-regulating circuit between the VCC pin of circuit and control chip U1, one end is with control chip U1's
The resistance R8 that VCC pin is connected, the other end is connected with voltage-regulating circuit, is serially connected in reference voltage electricity
Micro-processor interface circuit between road and the former limit inductance coil L1 of transformator T, and stream electricity is expanded respectively with audion
The ON-OFF control circuit composition that road is connected with the I pin of control chip U；The transmitting of described audion VT1
The Same Name of Ends of pole and control chip U1 and transformator T former limit inductance coil L2 respectively with reference voltage circuit
It is connected；The non-same polarity of described ON-OFF control circuit limit former with transformator T inductance coil L2 is connected；Institute
State GND pin and the equal ground connection of RC pin of control chip U1.
Wherein, described reference voltage circuit by amplifier P1, 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 form.
During connection, the negative pole of polar capacitor C3 base stage with audion VT2 after resistance R3 is connected,
Its positive pole anelectrode with amplifier P1 after resistance R1 is connected.The positive pole of polar capacitor C5 is through resistance
Be connected with the emitter stage of audion VT2 after R7, its negative pole limit former with transformator T inductance coil L1 same
Name end is connected.
Meanwhile, the negative pole of polar capacitor C2 negative input with amplifier P1 after resistance R6 be connected,
Its positive pole RC pin with control chip U1 after resistance R13 is connected.The negative electricity of polar capacitor C1
Be connected with the outfan of amplifier P1 after resistance R2, its positive pole is connected with the emitter stage of audion VT1.
One end of resistance R9 is connected with the negative pole of polar capacitor C1, the emitter stage of its other end and audion VT1
It is connected.One end of resistance R10 is connected with the negative pole of polar capacitor C11, its other end and control chip
The AO pin of U1 is connected.
The negative electrode ground connection of described amplifier P1；The grounded collector of described audion VT2, its emitter stage
It is connected with the negative pole of polar capacitor C10；The VR pin of described control chip U1 is with polar capacitor C2's
Positive pole is connected；The anelectrode of described amplifier P1 and the positive pole of polar capacitor C1 are collectively forming reference voltage
The input of circuit；The electrode input end of described amplifier P1 is connected with micro-processor interface circuit and and external power source
It is connected.
Further, described 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, polarity
Electric capacity C8, polar capacitor C9, diode D3, Zener diode D4, and Zener diode D6 form.
During connection, the P pole of diode D3 after adjustable resistance R14 with the grid phase of field effect transistor MOS
Connect, its N pole is connected with the emitter stage of audion VT7.The negative pole of polar capacitor C9 and field effect transistor
The source electrode of MOS is connected, its positive pole I pin with control chip U1 after resistance R15 is connected.Pole
Property electric capacity C8 positive pole is connected with the I pin of control chip U1, its minus earth.One end of resistance R16
Be 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 pole of Zener diode D4 be connected with the drain electrode of field effect transistor MOS, its P pole warp
After resistance R17, the emitter stage with audion VT3 is connected.The N pole of Zener diode D6 is through resistance R20
Afterwards the Same Name of Ends with transformator T secondary inductance coil L3 be connected, its P pole after resistance R18 with three poles
The emitter stage of pipe VT3 is connected, and one end of resistance R19 is connected with the negative pole of polar capacitor C6, it
The other end is connected with the P pole of Zener diode D6.The grounded collector of described audion VT3；Field effect
Should the non-same polarity of drain electrode limit former with transformator T inductance coil L2 of pipe MOS be connected.
Further, described micro-processor interface circuit by resistance R4, resistance R5, diode D2, inductance L4,
And polar capacitor C4 composition.
During connection, the N pole of diode D2 limit inductance coil L1 former with transformator T same after resistance R5
Name end is connected, its P pole electrode input end with amplifier P1 after resistance R4 is connected.Inductance L4
One end be connected with the electrode input end of amplifier P1, its other end and transformator T former limit inductance coil
The Same Name of Ends of L1 is connected.The positive pole of polar capacitor C4 is connected with the P pole of diode D2, its negative pole with
The non-same polarity of transformator T former limit inductance coil L1 is connected.
As in figure 2 it is shown, described voltage-regulating circuit is by voltage stabilizing chip U2, audion VT4, resistance R21,
Resistance R22, resistance R23, resistance R24, resistance R25, adjustable resistance R26, resistance R27, resistance
R28, resistance R29, resistance R30, resistance R31, polar capacitor C10, polar capacitor C11, polarity electricity
Hold C12, diode D7, diode D8, and diode D9 composition.
During connection, the positive pole of polar capacitor C10 after resistance R22 with the VIN pin phase of voltage stabilizing chip U2
Connect, its negative pole as the input of voltage-regulating circuit and is connected with reference voltage circuit.Polar capacitor
The positive pole of C11 is sequentially connected through resistance R23 positive pole with polar capacitor C10 after resistance R24, it is born
Pole ADJ pin with voltage stabilizing chip U2 after resistance R25 is connected.One end of adjustable resistance R26 and control
The ADJ pin of coremaking sheet U2 is connected, its other end is connected with the base stage of audion VT4.
Meanwhile, the positive pole of polar capacitor C12 after resistance R27 with the VOUT pin phase of voltage stabilizing chip U2
Connect, its negative pole is connected with the emitter stage of audion VT4.The P pole of diode D9 is after resistance R30
Be connected with the positive pole of polar capacitor C12, its N pole after resistance R28 with the colelctor electrode phase of audion VT4
Connect.The P pole of Zener diode D8 is connected with the positive pole of polar capacitor C12, its N pole is through resistance R29
It is connected with the N pole of diode D9 afterwards.The P pole of diode D7 after resistance R21 with polar capacitor C10
Positive pole be connected, P pole with Zener diode D8 after resistance R31, its N pole is connected.
The N pole of described diode D9 be connected with the negative pole of polar capacitor C11 after ground connection；Described voltage stabilizing two
The N pole of pole pipe D8 as the outfan of voltage-regulating circuit and after resistance R8 with control chip U1's
VCC pin is connected.
As it is shown on figure 3, described audion expands current circuit by audion VT5, audion VT6, audion
VT7, amplifier P2, resistance R32, resistance R33, resistance R34, resistance R35, resistance R36, resistance
R37, resistance R38, resistance R39, resistance R40, resistance R41, resistance R42, resistance R43, adjustable
Resistance R44, resistance R45, polar capacitor C13, polar capacitor C14, polar capacitor C15, polar capacitor
C16, diode D10, diode D11, and diode D12 form.
During connection, the positive pole of polar capacitor C13 after resistance R33 with the electrode input end phase of amplifier P2
Connection, its negative pole ground connection after resistance R32.The N pole of diode D10 and the positive pole phase of polar capacitor C13
Connect, its P pole emitter stage with audion VT5 after resistance R34 is connected.Polar capacitor C15 is just
P pole with diode D10 after resistance R35, pole is connected, its negative pole after resistance R38 with audion
The colelctor electrode of VT6 is connected.The negative pole of polar capacitor C14 after resistance R40 with the current collection of audion VT7
Pole is connected, its positive pole negative input with amplifier P2 after resistance R37 is connected.
Meanwhile, resistance R45 one end be connected with the colelctor electrode of audion VT7, its other end ground connection.Two
The N pole of pole pipe D12 is connected with the base stage of audion VT7, its P pole after resistance R41 with audion
The base stage of VT6 is connected.The positive pole of polar capacitor C16 after resistance R39 with the outfan of amplifier P2
Be connected, its negative pole emitter stage with audion VT7 after adjustable resistance R44 is connected.Diode D11
N pole colelctor electrode with audion VT5 after resistance R36 be connected, its P pole after resistance R42 with
The emitter stage of audion VT6 is connected.One end of resistance R43 is connected with the emitter stage of audion VT6,
Its other end is connected with the negative pole of polar capacitor C16.
The base stage of described audion VT5 is connected with the electrode input end of amplifier P2；Described polar capacitor
The positive pole of C13 expands the input of current circuit as audion and is connected with the OUT pin of control chip U；
The emitter stage of described audion VT7 expands the outfan of current circuit as audion and is connected with ON-OFF control circuit
Connect.
During operation, the voltage of input can be automatically adjusted by the present invention, and the present invention can also be to the electricity of input
Pressure fluctuation is adjusted, and makes voltage keep stable, thus improves each to battery protection circuit of the present invention
The accuracy of item Function detection.The present invention can effectively improve the intensity of electric current, load capacity is expanded and flow to 10A
Above, thus the present invention can export stable powerful voltage x current, and improve the present invention can be to electricity simultaneously
Pond protection circuit plate detects accurately.Meanwhile, the control chip of the present invention have employed the integrated core of UC3845,
This chip has blood pressure lowering, voltage stabilizing, programmable current restriction and the function of overcurrent protection, so that it is guaranteed that
The present invention can export stable voltage.In order to preferably implement the present invention, described voltage stabilizing chip U2 is the most preferential
Have employed the integrated chip of LM317T to realize.
According to above-described embodiment, can well realize the present invention.
Claims (7)
1. an intensifying current formula bipolarity switching power supply, it is characterised in that main by control chip
U1, transformator T, reference voltage circuit, audion VT1, it is connected with the OUT pin of control chip U
The audion that connects expands current circuit, and N pole AO pin with control chip U1 after resistance R11 is connected, P
The diode D1 that pole is connected with the base stage of audion VT1, positive pole after resistance R12 with audion VT1
Colelctor electrode be connected, polar capacitor C7, the P pole of minus earth and transformator T secondary inductance coil L3
Non-same polarity be connected, N pole of the same name with transformator T secondary inductance coil L3 after polar capacitor C6
The diode D5 that end is connected, is serially connected between the VCC pin of reference voltage circuit and control chip U1
Voltage-regulating circuit, one end is connected with the VCC pin of control chip U1, the other end is electric with Voltage Cortrol
The resistance R8 that road is connected, is serially connected between reference voltage circuit and the former limit inductance coil L1 of transformator T
Micro-processor interface circuit, and opening of being connected of the I pin expanding current circuit and control chip U respectively with audion
Pass control circuit composition；The emitter stage of described audion VT1 and control chip U1 and the former limit of transformator T
The Same Name of Ends of inductance coil L2 is connected with reference voltage circuit respectively；Described ON-OFF control circuit and transformator
The non-same polarity of T former limit inductance coil L2 is connected；The GND pin of described control chip U1 and RC pipe
The equal ground connection of foot.
A kind of intensifying current formula bipolarity switching power supply the most according to claim 1, its feature
Being, described audion expands current circuit by audion VT5, audion VT6, audion VT7, amplifier
P2, positive pole electrode input end with amplifier P2 after resistance R33 is connected, negative pole is after resistance R32
Polar capacitor C13, the N pole of ground connection is connected with the positive pole of polar capacitor C13, P pole is after resistance R34
The diode D10 being connected with the emitter stage of audion VT5, positive pole after resistance R35 with diode D10
The polar capacitor that P pole is connected, negative pole colelctor electrode with audion VT6 after resistance R38 is connected
C15, negative pole colelctor electrode with audion VT7 after resistance R40 is connected, positive pole after resistance R37 with
The polar capacitor C14 that the negative input of amplifier P2 is connected, the colelctor electrode phase of one end and audion VT7
Connect, resistance R45, the N pole of other end ground connection is connected with the base stage of audion VT7, P pole is through resistance
The diode D12 that after R41, base stage with audion VT6 is connected, positive pole after resistance R39 with amplifier
The pole that the outfan of P2 is connected, negative pole emitter stage with audion VT7 after adjustable resistance R44 is connected
Property electric capacity C16, N pole colelctor electrode with audion VT5 after resistance R36 is connected, P pole is through resistance R42
The diode D11 that emitter stage with audion VT6 is connected afterwards, and the transmitting of one end and audion VT6
The resistance R43 composition that pole is connected, the other end is connected with the negative pole of polar capacitor C16；Described audion
The base stage of VT5 is connected with the electrode input end of amplifier P2；The positive pole of described polar capacitor C13 is as three
Pole pipe expands the input of current circuit and is connected with the OUT pin of control chip U；Described audion VT7
Emitter stage expand the outfan of current circuit as audion and be connected with ON-OFF control circuit.
A kind of intensifying current formula bipolarity switching power supply the most according to claim 2, its feature
Be, described voltage-regulating circuit by voltage stabilizing chip U2, audion VT4, positive pole after resistance R22 with steady
Pressure chip U2 VIN pin be connected, negative pole as voltage-regulating circuit input and and reference voltage
The polar capacitor C10 that circuit is connected, positive pole sequentially after resistance R23 and resistance R24 with polar capacitor C10
The polarity electricity that positive pole is connected, negative pole ADJ pin with voltage stabilizing chip U2 after resistance R25 is connected
Holding C11, one end is connected with the ADJ pin of control chip U2, the base stage of the other end and audion VT4
The adjustable resistance R26 being connected, positive pole VOUT pin with voltage stabilizing chip U2 after resistance R27 is connected
Connect, polar capacitor C12, P pole that negative pole is connected with the emitter stage of audion VT4 after resistance R30 with
The positive pole of polar capacitor C12 is connected, N pole colelctor electrode with audion VT4 after resistance R28 is connected
Diode D9, P pole be connected with the positive pole of polar capacitor C12, N pole after resistance R29 with diode
The Zener diode D8 that the N pole of D9 is connected, and P pole after resistance R21 with polar capacitor C10's
The diode D7 group that positive pole is connected, N pole is connected with the P pole of Zener diode D8 after resistance R31
Become；The N pole of described diode D9 be connected with the negative pole of polar capacitor C11 after ground connection；Described voltage stabilizing two
The N pole of pole pipe D8 as the outfan of voltage-regulating circuit and after resistance R8 with control chip U1's
VCC pin is connected.
A kind of intensifying current formula bipolarity switching power supply the most according to claim 3, its feature
Be, described reference voltage circuit by amplifier P1, audion VT2, negative pole after resistance R3 with three poles
The polarity electricity that the base stage of pipe VT2 is connected, positive pole anelectrode with amplifier P1 after resistance R1 is connected
Holding C3, positive pole is connected with the emitter stage of audion VT2 after resistance R7, negative pole and the former limit of transformator T
The polar capacitor C5 that the Same Name of Ends of inductance coil L1 is connected, negative pole after resistance R6 with amplifier P1's
The polarity that negative input is connected, positive pole is connected with the RC pin of control chip U1 after resistance R13
Electric capacity C2, after negative pole resistance R2 the outfan with amplifier P1 be connected, positive pole and audion VT1
The polar capacitor C1 that emitter stage is connected, one end is connected with the negative pole of polar capacitor C1, the other end and three
The resistance R9 that the emitter stage of pole pipe VT1 is connected, and one end is connected with the negative pole of polar capacitor C11,
The resistance R10 composition that the other end is connected with the AO pin of control chip U1；Described amplifier P1's is negative
Electrode ground connection；The grounded collector of described audion VT2, the negative pole phase of its emitter stage and polar capacitor C10
Connect；The VR pin of described control chip U1 is connected with the positive pole of polar capacitor C2；Described amplifier
The positive pole of the anelectrode of P1 and polar capacitor C1 is collectively forming the input of reference voltage circuit；Described amplification
The electrode input end of device P1 is connected with micro-processor interface circuit.
A kind of intensifying current formula bipolarity switching power supply the most according to claim 4, its feature
Being, described ON-OFF control circuit is by field effect transistor MOS, and audion VT3, P pole is through adjustable resistance R14
Be connected with the grid of field effect transistor MOS afterwards, two poles that N pole is connected with the emitter stage of audion VT7
Pipe D3, negative pole is connected with the source electrode of field effect transistor MOS, positive pole after resistance R15 with control chip U1
The polar capacitor C9 that is connected of I pin, positive pole is connected with the I pin of control chip U1, minus earth
Polar capacitor C8, one end is connected with the source electrode of field effect transistor MOS, the other end and audion VT3
Resistance R16, the N pole that base stage is connected is connected with the drain electrode of field effect transistor MOS, P pole is through resistance R17
Zener diode D4, the N pole that emitter stage with audion VT3 is connected afterwards after resistance R20 with transformation
The Same Name of Ends of device T secondary inductance coil L3 is connected, P pole after resistance R18 with audion VT3 send out
The Zener diode D6 that emitter-base bandgap grading is connected, and one end is connected with the negative pole of polar capacitor C6, the other end
The resistance R19 composition being connected with the P pole of Zener diode D6；The colelctor electrode of described audion VT3 connects
Ground；The non-same polarity of the drain electrode of field effect transistor MOS limit former with transformator T inductance coil L2 is connected.
A kind of intensifying current formula bipolarity switching power supply the most according to claim 5, its feature
Being, described micro-processor interface circuit is by N pole limit inductance coil L1 former with transformator T of the same name after resistance R5
The diode D2 that end is connected, P pole electrode input end with amplifier P1 after resistance R4 is connected, one
End be connected with the electrode input end of amplifier P1, other end limit former with transformator T inductance coil L1 same
The name inductance L4 that is connected of end, and positive pole is connected with the P pole of diode D2, negative pole and transformator T
The polar capacitor C4 composition that the non-same polarity of former limit inductance coil L1 is connected.
A kind of intensifying current formula bipolarity switching power supply the most according to claim 6, its feature
Being, described control chip U1 is the integrated chip of UC3845；Described voltage stabilizing chip U2 then have employed LM317T
Integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408289.XA CN105978345A (en) | 2016-06-12 | 2016-06-12 | Current-enhanced bipolar switch stabilized voltage supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408289.XA CN105978345A (en) | 2016-06-12 | 2016-06-12 | Current-enhanced bipolar switch stabilized voltage supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105978345A true CN105978345A (en) | 2016-09-28 |
Family
ID=57010473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610408289.XA Pending CN105978345A (en) | 2016-06-12 | 2016-06-12 | Current-enhanced bipolar switch stabilized voltage supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105978345A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962621A (en) * | 2017-12-22 | 2019-07-02 | 魏主祐 | Power supply change-over device |
-
2016
- 2016-06-12 CN CN201610408289.XA patent/CN105978345A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962621A (en) * | 2017-12-22 | 2019-07-02 | 魏主祐 | Power supply change-over device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105958831A (en) | Voltage regulation circuit based bipolar switch voltage-stabilizing power supply | |
| CN104917431A (en) | Broad pulse trigger type DC speed regulating system with overvoltage and overcurrent protection | |
| CN104869729A (en) | Broad-pulse triggering lowpass filtering LED voltage stabilizing system based on phase processing | |
| CN105978345A (en) | Current-enhanced bipolar switch stabilized voltage supply | |
| CN104953997A (en) | Driving harness winding inserter system based on buck type constant current | |
| CN105978347A (en) | Bipolar switch voltage-stabilizing power supply based on audion current expanding circuit | |
| CN206041809U (en) | Bipolarity switching power supply | |
| CN206041810U (en) | Bipolarity switching power supply based on triode expansive flows circuit | |
| CN106059311A (en) | Constant-voltage output power supply based on overvoltage protecting circuit | |
| CN105978348A (en) | Multi-circuit processing type bipolar switch voltage-stabilizing power supply | |
| CN106026663A (en) | Micro-processing circuit-based linear filter bipolar switching power supply | |
| CN102780203A (en) | Overvoltage and under-voltage protection circuit | |
| CN106208731A (en) | A kind of automatic AC regulated power supply of stable performance | |
| CN106169878A (en) | A kind of face detection system power supply based on audion mu balanced circuit | |
| CN106160494A (en) | A kind of feedback signal processing-type PWM inverse-excitation type switch power-supply | |
| CN106059308A (en) | Bipolar switch regulated power supply based on linear filter circuit | |
| CN106026668A (en) | Over-voltage protection type constant-voltage output power supply based on high-voltage absorption circuit | |
| CN105977903A (en) | High-precision ripple suppression type mains supply overvoltage protection system for LEDs | |
| CN105978346A (en) | Bipolar switch voltage-stabilizing power supply | |
| CN106100380A (en) | A kind of soft start current stabilization circuit based on filtering and amplifying circuit | |
| CN105978313A (en) | Photoelectric coupling switching circuit-based single-chip switching power supply of air conditioner controller | |
| CN105934044A (en) | Multi-way output voltage stabilized power supply for LED based on snubber circuit | |
| CN106100376A (en) | A kind of many processing of circuit type face detection system power supply | |
| CN106026655A (en) | Frequency modulation type constant-voltage output power supply based on high-voltage absorption circuit | |
| CN105979646A (en) | Operational amplification circuit based white light LED constant-current driving power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160928 |