CN208424213U - DC/DC converter circuit and DC/DC converter based on middle power - Google Patents
DC/DC converter circuit and DC/DC converter based on middle power Download PDFInfo
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- CN208424213U CN208424213U CN201821015402.9U CN201821015402U CN208424213U CN 208424213 U CN208424213 U CN 208424213U CN 201821015402 U CN201821015402 U CN 201821015402U CN 208424213 U CN208424213 U CN 208424213U
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Abstract
The utility model discloses DC/DC converter circuits and DC/DC converter based on middle power, it is related to power technique fields, it include: circuit for preventing reverse connection of power supply, EMI circuit, soft charge road, phase whole-bridging circuit, the output end of the circuit for preventing reverse connection of power supply is connect with the input terminal of the EMI circuit, the output end of the EMI circuit is connect with the input terminal on the soft charge road, the output end on the soft charge road is connect with the input terminal of the phase whole-bridging circuit, input terminal and input DC power of the circuit for preventing reverse connection of power supply as DC/DC converter, output end of the output end of the phase whole-bridging circuit as DC/DC converter.Utility model advantage is small in size, and power density, transfer efficiency are relatively high, is conducive to permanent application, it is light-weight, performance is stable, waterproof, it is shockproof be adapted to various environment, outside line is simple, saves cost.
Description
Technical field
The utility model relates to power technique fields, it is more particularly to DC/DC converter circuit and DC/ based on middle power
DC converter.
Background technique
DC/DC converter is widely used in long-range and data communication, computer, business automation equipment, industrial instrumentation instrument
The fields such as table, military affairs, space flight are related to all trades and professions of national economy.Into the 90's of 20th century, DC/DC converter is low again
Growth rate increases substantially in power bracket, and due to the high speed of microprocessor, DC/DC converter is from low frequency to middle power side
Inevitable trend to development, thus the growth rate of the DC/DC converter of 251W-750W be also quickly, this is mainly due to
Service medical treatment and experimental facilities, industrial control equipment, telecommunication device, multichannel communication multiple telecommunication and sending device, DC/DC conversion
Device has broad application prospects in long-range and digital communication field.
The volume of the DC/DC converter of existing 251W-750W is big, and power density, transfer efficiency are all relatively low, no
Conducive to permanent application.
Utility model content
That the technical problem to be solved by the utility model is to the volumes of existing DC/DC converter is big, transfer efficiency is low
Problem.
The utility model is to solve above-mentioned technical problem by the following technical programs:
A kind of DC/DC converter circuit based on middle power, comprising: circuit for preventing reverse connection of power supply, EMI circuit, soft charge road,
Phase whole-bridging circuit, the output end of the circuit for preventing reverse connection of power supply are connect with the input terminal of the EMI circuit, the EMI circuit
Output end connect with the input terminal on the soft charge road, the output end on the soft charge road is defeated with the phase whole-bridging circuit
Enter end connection, input terminal and input DC power of the circuit for preventing reverse connection of power supply as DC/DC converter circuit, the phase shift
Output end of the output end of full-bridge circuit as DC/DC converter circuit.
Preferably, the circuit for preventing reverse connection of power supply includes the first field-effect tube Q1, the grid of the first field-effect tube Q1 and straight
The first input end connection of the anode, EMI circuit in galvanic electricity source, the source electrode of the first field-effect tube Q1 and the cathode of DC power supply connect
It connects, the drain electrode of the first field-effect tube Q1 is connect with the second input terminal of EMI circuit.
Preferably, the first field-effect tube Q1 selects SPP06N60C3 model.
Preferably, the EMI circuit includes first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4,
Five capacitor C5, first resistor R1, second resistance R2, common mode inductance L, the second capacitor C2 connects with third capacitor C3 and tie point
Ground connection, first capacitor C1, first resistor R1, second resistance R2 and the second capacitor C2 and third capacitor C3 series circuit all into
Row is connected in parallel, one end of first capacitor C1, one end of first resistor R1, one end of second resistance R2 and the second capacitor C2
Ungrounded end is all connect with the grid of the first field-effect tube Q1, the first coil Same Name of Ends of common mode inductance L is connected, first effect
Should the grid of pipe Q1 be connected with the first coil Same Name of Ends of common mode inductance L, the other end of first capacitor C1, first resistor R1
The ungrounded end of the other end, the other end of second resistance R2 and third capacitor C3 all with the drain electrode of the first field-effect tube Q1, altogether
The second coil Same Name of Ends of mould inductance L is connected, the drain electrode of the first field-effect tube Q1 and the second coil Same Name of Ends of common mode inductance L
Be connected, the 4th capacitor C4, the 5th capacitor C5 carry out it is in parallel, one end of the 4th capacitor C4, the 5th capacitor C5 one end all together
The first coil non-same polarity of mould inductance L is connected, and the output end as EMI circuit, the other end of the 4th capacitor C4, the 5th
The other end of capacitor C5 is all connected and is grounded with the second coil non-same polarity of common mode inductance L.
Preferably, the soft charge road include the 6th capacitor C6, PMOS tube M1,3rd resistor R3, Schottky diode D1,
PNP type triode P1, the 4th resistance R4, the 5th resistance R5, NPN type triode N1, the 6th resistance R6, the 7th resistance R7, the 7th
One end of capacitor C7, the 6th capacitor C6 are connect with the source electrode of PMOS pipe M1, and the leakage of one end of the 6th capacitor C6 and PMOS tube M1
Input terminal of the pole as soft charge road, and connect with the output end of EMI circuit, the other end ground connection of the 6th capacitor C6, third electricity
Resistance R3 and Schottky diode D1 be connected in parallel between the grid of PMOS tube M1 and the source electrode of PMOS tube M1, while 3rd resistor R3 with
Schottky diode D1 is also connected in parallel between the collector and emitter of PNP type triode P1, wherein Schottky diode D1's
Anode is connect with the collector of the grid of PMOS tube M1 and NPN type triode P1, the cathode and positive-negative-positive of Schottky diode D1
The emitter of triode P1 is connected with the source electrode of PMOS tube M1, and the 4th resistance R4 is connected to the base stage and hair of PNP type triode P1
Between emitter-base bandgap grading, the 5th resistance R5 is connected between the base stage of PNP type triode P1 and the collector of NPN type triode N1, and the 6th
Resistance R6 is connected between the drain electrode of PMOS tube M1 and the base stage of NPN type triode N1 and connects, the 6th resistance R6 and the 7th resistance
R7, the 7th capacitor C7 connect, the 7th resistance R7 base in parallel and being connected to NPN type triode N1 with the 7th capacitor C7 progress
Between pole and emitter, the collector of NPN type triode N1, the 7th resistance R7, the non-of the 7th capacitor C7 connect the 6th end resistance R6
And the 6th the end capacitor C6 be all grounded, the drain electrode of PMOS tube M1, the drain electrode of 3rd resistor R3, the 6th resistance R6 and PMOS tube M1 connect
The output end held as soft charge road is connect, and is attached with the input terminal of phase whole-bridging circuit.
Preferably, the phase whole-bridging circuit includes the 8th resistance R8, the 9th resistance R9, the second field-effect tube Q2, third
Field-effect tube Q3, the 8th capacitor C8, the 9th capacitor C9, the first transformer T1, the second diode D2, third diode D3, the 4th
Diode D4, the 5th diode D5, the first inductance L1, the second inductance L2, the 4th field-effect tube Q4, the 5th field-effect tube Q5,
Ten capacitor C10, the 11st capacitor C11, the 12nd capacitor C12, the 13rd capacitor C13, the 8th resistance R8 and the 9th resistance R9 go here and there
Connection, the source electrode of the second field-effect tube Q2 are connect with the drain electrode of third field-effect tube Q3, and the 8th capacitor C8 is connected to the second field-effect
Between the drain electrode and source electrode of pipe Q2, the 9th capacitor C9 is connected between the drain electrode and source electrode of third field-effect tube Q3, the two or two pole
The anode of pipe D2 is connect with the cathode of third diode D3, the drain electrode of the source electrode and the 5th field-effect tube Q5 of the 4th field-effect tube Q4
Connection, the tenth capacitor C10 are connected between the drain electrode and source electrode of the 4th field-effect tube Q4, and the 11st capacitor C11 is connected to the 5th
Between the drain electrode and source electrode of field-effect tube Q5, the non-series connection end of the 8th resistance R8, the drain electrode of the second field-effect tube Q2, the 8th capacitor
The drain electrode connecting pin of C8 and the second field-effect tube Q2, the cathode of the second diode D2, the drain electrode of the 4th field-effect tube Q4, the tenth electricity
Hold the drain electrode connecting pin of C10 and the 4th field-effect tube Q4, it is defeated with soft charge road as the input terminal of phase whole-bridging circuit, and all
Outlet connection；The non-series connection end of 9th resistance R9, the source electrode of third field-effect tube Q3, the 9th capacitor C9 and third field-effect tube
The source electrode connecting pin of Q3, the anode of third diode D3, the source electrode of the 5th field-effect tube Q5, the ten one capacitor C11 and the 5th
The source electrode connecting pin of effect pipe Q5 is all grounded, and the primary side non-same polarity of the first transformer T1 is connected to the source of the second field-effect tube Q2
On the drain bond wires of pole and third field-effect tube Q3, one end of the original side of the same name of the first transformer T1 and the first inductance L1
Connection, the other end of the first inductance L1 are connected to the source electrode of the 4th field-effect tube Q4 and the drain bond wires of the 5th field-effect tube Q5
On, the secondary side Same Name of Ends of the first transformer T1 is connect with the anode of the 4th diode D4, and the secondary side of the first transformer T1 is non-of the same name
It holds and is connect with the anode of the 5th diode D5, one end of the 4th diode D4, the cathode of the 5th diode D5 and the second inductance L2
Connection, the 12nd capacitor C12 connect with the 13rd capacitor C13, and the 13rd capacitor C13's is positive another with the second inductance L2
End connection, the cathode of the 13rd capacitor C13 are connected to the control terminal of the first transformer T1, the electricity of the 12nd capacitor C12 and the 13rd
Hold C13 to be connected between the other end of the second inductance L2 and the control terminal of the first transformer T1, and as phase whole-bridging circuit
Output end, wherein the grid of the second field-effect tube Q2, third field-effect tube Q3, the 4th field-effect tube Q4, the 5th field-effect tube Q5
It is all driver connected.
Preferably, the second field-effect tube Q2, the third field-effect tube Q3, the 4th field-effect tube Q4, described
5th field-effect tube Q5 selects SPP06N60C3 model.
Further, the DC/DC converter of the circuit.
The utility model has the advantage that compared with prior art
Realize fixed frequency soft switch using phase whole-bridging circuit in the utility model, can be improved the efficiency of power supply entirety with
EMI circuit performance, reverse power connection circuit can effective protection circuit, while improving power density, improve efficiency, extend electricity
The service life in pond improves course continuation mileage；The small in size, light-weight of DC/DC converter of middle power, performance are stable, waterproof, prevent
Shake is suitable for various environment, and outside line is simple, and input positive and negative anodes not will start when reversed, avoids damaging, and input is without electric arc, section
Cost-saving.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of DC/DC converter circuit based on middle power of the utility model embodiment.
Fig. 2 is a kind of soft charge road figure of DC/DC converter circuit based on middle power of the utility model embodiment.
Fig. 3 is a kind of EMI circuit diagram of DC/DC converter circuit based on middle power of the utility model embodiment.
Fig. 4 is a kind of power supply reverse connection protection electricity of DC/DC converter circuit based on middle power of the utility model embodiment
Lu Tu.
Fig. 5 is a kind of phase whole-bridging circuit of DC/DC converter circuit based on middle power of the utility model embodiment
Circuit diagram.
Specific embodiment
It elaborates below to the embodiments of the present invention, the present embodiment before being with technical solutions of the utility model
It puts and is implemented, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is unlimited
In following embodiments.
As shown in Figure 1, the DC/DC converter circuit of middle power, comprising: circuit for preventing reverse connection of power supply, EMI circuit, soft charge
The output end on road, phase whole-bridging circuit, circuit for preventing reverse connection of power supply is connect with the input terminal of EMI circuit, the output end of EMI circuit with
The input terminal on soft charge road connects, and the output end on soft charge road and the input terminal of phase whole-bridging circuit connect, power supply reverse connection protection electricity
Input terminal and input DC power of the road as DC/DC converter circuit, the output end of phase whole-bridging circuit are converted as DC/DC
The output end of device circuit.
As shown in Fig. 2, circuit for preventing reverse connection of power supply includes field-effect tube Q1, the grid and DC power supply of field-effect tube Q1 is just
The connection of input terminal 1 of pole, EMI circuit, the source electrode of field-effect tube Q1 and the cathode of DC power supply connect, the drain electrode of field-effect tube Q1
It is connect with the input terminal 2 of EMI circuit.Wherein, field-effect tube Q1 selects SPP06N60C3 model.When reversal connection, reverse power connection electricity
Field-effect tube Q1 in road is in by state, and circuit cannot be connected to protect circuit, when forward conduction, can allow field-effect
Pipe saturation conduction, and internal resistance is smaller, the power consumption generated substantially can be ignored, wherein the internal resistance of SPP06N60C3 model compared with
It is small.
As shown in figure 3, EMI circuit includes capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, resistance R1, resistance
R2, common mode inductance L, capacitor C2 connect with capacitor C3 and tie point be grounded, capacitor C1, resistance R1, resistance R2 and capacitor C2 with
Capacitor C3 series circuit is all connected in parallel, one end of capacitor C1, one end of resistance R1, one end of resistance R2 and capacitor C2
Ungrounded end all connect with the grid of field-effect tube Q1, the coil n1 Same Name of Ends of common mode inductance L is connected, field-effect tube Q1
Grid be connected with the coil n1 Same Name of Ends of common mode inductance L, the other end of capacitor C1, the other end of resistance R1, resistance R2
The ungrounded end of the other end and capacitor C3 are all connected with the coil n2 Same Name of Ends of the drain electrode of field-effect tube Q1, common mode inductance L,
The drain electrode of field-effect tube Q1 is connected with the coil n2 Same Name of Ends of common mode inductance L, and capacitor C4, capacitor C5 carry out in parallel, capacitor
One end of C4, one end of capacitor C5 are all connected with the coil n1 non-same polarity of common mode inductance L, and the output as EMI circuit
End, the other end of capacitor C4, the other end of capacitor C5 are all connected and are grounded with the coil n2 non-same polarity of common mode inductance L.Its
In, the capacitance of capacitor C1 is 0.3uF, capacitor C2, capacitor C3 capacitance be 220pF, capacitor C4, capacitor C5 capacitance be 0.3uF,
Resistance R1, resistance R2 resistance value be 330 Ω.
As shown in figure 4, soft charge road includes capacitor C6, PMOS tube M1, resistance R3, Schottky diode D1, three pole of positive-negative-positive
Pipe P1, resistance R4, resistance R5, NPN type triode N1, resistance R6, resistance R7, capacitor C7, one end of capacitor C6 and PMOS tube M1
Source electrode connection, and input terminal of the drain electrode of one end of capacitor C6 and PMOS tube M1 as soft charge road, and defeated with EMI circuit
Outlet connection, the other end ground connection of capacitor C6, resistance R3 and Schottky diode D1 are connected in parallel on the grid and PMOS of PMOS tube M1
Between the source electrode of pipe M1, while resistance R3 and Schottky diode D1 are also connected in parallel on collector and the transmitting of PNP type triode P1
Between pole, wherein the anode of Schottky diode D1 is connect with the collector of the grid of PMOS pipe M1 and NPN type triode P1,
The cathode of Schottky diode D1 is connect with the source electrode of the emitter of PNP type triode P1 and PMOS tube M1, and resistance R4 is connected to
Between the base stage and emitter of PNP type triode P1, resistance R5 is connected to the base stage and NPN type triode of PNP type triode P1
Between the collector of N1, resistance R6 is connected between the drain electrode of PMOS tube M1 and the base stage of NPN type triode N1 and connects, resistance R6
It connects with resistance R7, capacitor C7, resistance R7 is in parallel with capacitor C7 progress and is connected to the base stage and hair of NPN type triode N1
Between emitter-base bandgap grading, collector, resistance R7, the end non-connecting resistance R6 of capacitor C7 and the end capacitor C6 of NPN type triode N1 is all grounded,
The drain electrode of PMOS tube M1, resistance R3, resistance R6 and PMOS tube M1 output end of the drain electrode connecting pin as soft charge road, and with shifting
The input terminal of phase full-bridge circuit is attached.Wherein, the resistance value of the capacitance 1000pF of capacitor C6, resistance R3 are 1K, resistance R4 electricity
Hinder R5, resistance R6, resistance R7 resistance value be 1K, the capacitance of capacitor C7 is 0.3uF.
As shown in figure 5, phase whole-bridging circuit include resistance R8, resistance R9, field-effect tube Q2, field-effect tube Q3, capacitor C8,
Capacitor C9, transformer T1, diode D2, diode D3, diode D4, diode D5, inductance L1, inductance L2, field-effect tube Q4,
Field-effect tube Q5, capacitor C10, capacitor C11, capacitor C12, capacitor C13, resistance R8 connect with resistance R9, the source of field-effect tube Q2
Pole is connect with the drain electrode of field-effect tube Q3, and capacitor C8 is connected between the drain electrode and source electrode of field-effect tube Q2, and capacitor C9 is connected to
Between the drain electrode and source electrode of field-effect tube Q3, the anode of diode D2 is connect with the cathode of third diode D3, field-effect tube Q4
Source electrode connect with the drain electrode of field-effect tube Q5, capacitor C10 is connected between the drain electrode and source electrode of field-effect tube Q4, capacitor C11
It is connected between the drain electrode and source electrode of field-effect tube Q5, non-series connection end, the drain electrode of field-effect tube Q2, capacitor C8 and the field of resistance R8
The drain electrode connecting pin of effect pipe Q2, the cathode of diode D2, the drain electrode of field-effect tube Q4, the leakage of capacitor C10 and field-effect tube Q4
Pole connecting pin is connect as the input terminal of phase whole-bridging circuit, and all with the output end on soft charge road；The non-series connection of resistance R9
End, the source electrode of field-effect tube Q3, capacitor C9 and the source electrode connecting pin of field-effect tube Q3, the anode of diode D3, field-effect tube Q5
Source electrode, capacitor C11 and field-effect tube Q5 source electrode connecting pin be all grounded, the primary side non-same polarity of transformer T1 connects effect on the scene
Should be on the source electrode of pipe Q2 and the drain bond wires of field-effect tube Q3, the original side of the same name connection and the one of inductance L1 of transformer T1
End connection, the other end of inductance L1 are connected on the source electrode of field-effect tube Q4 and the drain bond wires of field-effect tube Q5, transformer
The secondary side Same Name of Ends of T1 is connect with the anode of diode D4, and the secondary side non-same polarity of transformer T1 and the 5th diode D5 are just
Pole connection, diode D4, diode D5 cathode connect with one end of inductance L2, capacitor C12 connects with capacitor C13, capacitor
The anode of C13 is connect with the other end of inductance L2, and the cathode of capacitor C13 is connected to the control terminal of transformer T1, capacitor C12 and electricity
Hold C13 to be connected between the other end of inductance L2 and the control terminal of transformer T1, and the output end as phase whole-bridging circuit,
In, field-effect tube Q1, field-effect tube Q2, field-effect tube Q3, the grid of field-effect tube Q4 are all driver connected.Phase whole-bridging circuit
Configuration switches frequency is fixed, and the voltage and current stress that switching tube is born are smaller, convenient for control.Wherein, field-effect tube Q2, field effect
Should pipe Q3, field-effect tube Q4, field-effect tube Q5 all select SPP06N60C3 model, resistance R8, resistance R9 resistance value be 1M, electricity
Hold C8, capacitor C9, capacitor C10, capacitor C11, capacitor C12, capacitor C13 capacitance be 1uF.
To sum up, when circuit is connected, judge electric power polarity, if reversal connection, circuit do not work, external dc electricity not can enter
DC/DC converter.Initial time period, the work of soft charge road delay circuit internal capacitance low current after filling, and close slow charging
Road, wherein EMI circuit elder brother prints interference signal, and soft charge road can prevent surge current.DC supply input 46-82V
Voltage, the output end of DC/DC converter exports 12V voltage, and peak efficiencies can reach greater than 95%, and power reaches 600W, low
Total harmonic distortion can work less than 3 at -40-+85 DEG C, then DC/DC converter improves power density simultaneously, mention
High efficiency extends the service life of battery, improves course continuation mileage；Small in size, light-weight, the property of the DC/DC converter of middle power
Energy stabilization, waterproof, shockproof suitable for various environment, outside line is simple, and input positive and negative anodes not will start when reversed, avoid damaging
Bad, input saves cost without electric arc；And converter full-closed structure, metal shell is using the double-deck antirust treatment, internal electricity
Road plate, connector carry out moisture proof, the processing such as anti-mildew and protection from fumes.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of DC/DC converter circuit based on middle power characterized by comprising circuit for preventing reverse connection of power supply, EMI circuit,
Soft charge road, phase whole-bridging circuit, the output end of the circuit for preventing reverse connection of power supply are connect with the input terminal of the EMI circuit, institute
The output end for stating EMI circuit is connect with the input terminal on the soft charge road, and the output end on the soft charge road and the phase shift are complete
The input terminal of bridge circuit connects, input terminal and input dc power of the circuit for preventing reverse connection of power supply as DC/DC converter circuit
Source, output end of the output end of the phase whole-bridging circuit as DC/DC converter circuit.
2. a kind of DC/DC converter circuit based on middle power according to claim 1, which is characterized in that the power supply
The of the anode of the grid of reverse-connection preventing circuit including the first field-effect tube Q1, the first field-effect tube Q1 and DC power supply, EMI circuit
The cathode of the connection of one input terminal, the source electrode of the first field-effect tube Q1 and DC power supply connects, the drain electrode of the first field-effect tube Q1 with
Second input terminal of EMI circuit connects.
3. a kind of DC/DC converter circuit based on middle power according to claim 2, which is characterized in that described first
Field-effect tube Q1 selects SPP06N60C3 model.
4. a kind of DC/DC converter circuit based on middle power according to claim 2, which is characterized in that the EMI electricity
Road includes first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5, first resistor R1, second
Resistance R2, common mode inductance L, the second capacitor C2 connects with third capacitor C3 and tie point is grounded, first capacitor C1, first resistor
R1, second resistance R2 and the second capacitor C2 and third capacitor C3 series circuit are all connected in parallel, and the one of first capacitor C1
End, one end of first resistor R1, one end of second resistance R2 and the second capacitor C2 ungrounded end all with the first field-effect tube
The grid connection of Q1, the first coil Same Name of Ends of common mode inductance L are connected, the grid and common mode inductance L of the first field-effect tube Q1
First coil Same Name of Ends be connected, the other end of first capacitor C1, the other end of first resistor R1, second resistance R2 it is another
The the second coil Same Name of Ends of end and the ungrounded end of third capacitor C3 all with the drain electrode of the first field-effect tube Q1, common mode inductance L
It is connected, the drain electrode of the first field-effect tube Q1 is connected with the second coil Same Name of Ends of common mode inductance L, the 4th capacitor C4, the 5th
Capacitor C5 carries out parallel connection, and one end, one end of the 5th capacitor C5 of the 4th capacitor C4 is all non-of the same name with the first coil of common mode inductance L
End is connected, and the output end as EMI circuit, and the other end, the other end of the 5th capacitor C5 of the 4th capacitor C4 is all electric with common mode
The second coil non-same polarity of sense L is connected and is grounded.
5. a kind of DC/DC converter circuit based on middle power according to claim 1, which is characterized in that described soft to fill
Circuit includes the 6th capacitor C6, PMOS tube M1,3rd resistor R3, Schottky diode D1, PNP type triode P1, the 4th resistance
R4, the 5th resistance R5, NPN type triode N1, the 6th resistance R6, the 7th resistance R7, the 7th capacitor C7, one end of the 6th capacitor C6
It is connect with the source electrode of PMOS tube M1, and input terminal of the drain electrode of one end of the 6th capacitor C6 and PMOS tube M1 as soft charge road,
And connect with the output end of EMI circuit, the other end ground connection of the 6th capacitor C6,3rd resistor R3 is in parallel with Schottky diode D1
Between the grid of PMOS tube M1 and the source electrode of PMOS tube M1, while 3rd resistor R3 and Schottky diode D1 is also connected in parallel on
Between the collector and emitter of PNP type triode P1, wherein the anode of Schottky diode D1 and the grid of PMOS tube M1 and
The collector of NPN type triode P1 connects, the cathode of Schottky diode D1 and the emitter and PMOS tube of PNP type triode P1
The source electrode of M1 connects, and the 4th resistance R4 is connected between the base stage and emitter of PNP type triode P1, and the 5th resistance R5 is connected to
Between the base stage of PNP type triode P1 and the collector of NPN type triode N1, the 6th resistance R6 is connected to the drain electrode of PMOS tube M1
It being connected between the base stage of NPN type triode N1, the 6th resistance R6 connects with the 7th resistance R7, the 7th capacitor C7, and the 7th
Resistance R7 is in parallel with the 7th capacitor C7 progress and is connected between the base stage and emitter of NPN type triode N1, NPN type triode
The collector of N1, the 7th resistance R7, the non-of the 7th capacitor C7 connect the 6th end resistance R6 and the 6th end capacitor C6 is all grounded, PMOS
The drain electrode of pipe M1,3rd resistor R3, the 6th resistance R6 and PMOS tube M1 output end of the drain electrode connecting pin as soft charge road, and
It is attached with the input terminal of phase whole-bridging circuit.
6. a kind of DC/DC converter circuit based on middle power according to claim 1, which is characterized in that the phase shift
Full-bridge circuit includes the 8th resistance R8, the 9th resistance R9, the second field-effect tube Q2, third field-effect tube Q3, the 8th capacitor C8, the
Nine capacitor C9, the first transformer T1, the second diode D2, third diode D3, the 4th diode D4, the 5th diode D5,
One inductance L1, the second inductance L2, the 4th field-effect tube Q4, the 5th field-effect tube Q5, the tenth capacitor C10, the 11st capacitor C11,
12nd capacitor C12, the 13rd capacitor C13, the 8th resistance R8 connect with the 9th resistance R9, the source electrode of the second field-effect tube Q2 with
The drain electrode of third field-effect tube Q3 connects, and the 8th capacitor C8 is connected between the drain electrode and source electrode of the second field-effect tube Q2, and the 9th
Capacitor C9 is connected between the drain electrode and source electrode of third field-effect tube Q3, and the anode of the second diode D2 is with third diode D3's
Cathode connection, the source electrode of the 4th field-effect tube Q4 are connect with the drain electrode of the 5th field-effect tube Q5, and the tenth capacitor C10 is connected to the 4th
Between the drain electrode and source electrode of field-effect tube Q4, the 11st capacitor C11 is connected between the drain electrode and source electrode of the 5th field-effect tube Q5,
The non-series connection end of 8th resistance R8, the drain electrode of the second field-effect tube Q2, the drain electrode of the 8th capacitor C8 and the second field-effect tube Q2 connect
Connect end, the cathode of the second diode D2, the drain electrode of the 4th field-effect tube Q4, the leakage of the tenth capacitor C10 and the 4th field-effect tube Q4
Pole connecting pin is connect as the input terminal of phase whole-bridging circuit, and all with the output end on soft charge road；The non-string of 9th resistance R9
Join source electrode connecting pin, the third diode D3 of end, the source electrode of third field-effect tube Q3, the 9th capacitor C9 and third field-effect tube Q3
Anode, the source electrode of the 5th field-effect tube Q5, the 11st capacitor C11 and the 5th field-effect tube Q5 source electrode connecting pin be all grounded,
The drain electrode that the primary side non-same polarity of first transformer T1 is connected to the source electrode and third field-effect tube Q3 of the second field-effect tube Q2 connects
In wiring, the original side of the same name of the first transformer T1 is connect with one end of the first inductance L1, the other end connection of the first inductance L1
On the source electrode of the 4th field-effect tube Q4 and the drain bond wires of the 5th field-effect tube Q5, the secondary side Same Name of Ends of the first transformer T1
It being connect with the anode of the 4th diode D4, the secondary side non-same polarity of the first transformer T1 is connect with the anode of the 5th diode D5,
4th diode D4, the 5th diode D5 cathode connect with one end of the second inductance L2, the 12nd capacitor C12 and the 13rd electricity
Hold C13 series connection, the anode of the 13rd capacitor C13 is connect with the other end of the second inductance L2, the cathode connection of the 13rd capacitor C13
In the control terminal of the first transformer T1, the 12nd capacitor C12 and the 13rd capacitor C13 be connected to the other end of the second inductance L2 with
Between the control terminal of first transformer T1, and the output end as phase whole-bridging circuit, wherein the second field-effect tube Q2, third
Field-effect tube Q3, the 4th field-effect tube Q4, the grid of the 5th field-effect tube Q5 are all driver connected.
7. a kind of DC/DC converter circuit based on middle power according to claim 6, which is characterized in that described second
Field-effect tube Q2, the third field-effect tube Q3, the 4th field-effect tube Q4, the 5th field-effect tube Q5 are selected
SPP06N60C3 model.
8. a kind of DC/DC converter using the circuit as described in 1 to 7 any one of the claims.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821015402.9U CN208424213U (en) | 2018-06-28 | 2018-06-28 | DC/DC converter circuit and DC/DC converter based on middle power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821015402.9U CN208424213U (en) | 2018-06-28 | 2018-06-28 | DC/DC converter circuit and DC/DC converter based on middle power |
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| Publication Number | Publication Date |
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| CN208424213U true CN208424213U (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11600992B2 (en) * | 2018-12-06 | 2023-03-07 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
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2018
- 2018-06-28 CN CN201821015402.9U patent/CN208424213U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11600992B2 (en) * | 2018-12-06 | 2023-03-07 | Contemporary Amperex Technology Co., Limited | Electric protection circuit |
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Address after: Room 403, building a (incubator 16), No. 14, Wenguang Road, Xili community, Xili street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Teri Huateng new energy Co.,Ltd. Address before: 518100 zone a, floor 3, building B, Qiaoyun factory, No. 1 Dahua Road, Yanchuan community, Songgang street, Shenzhen, Guangdong Patentee before: SHENZHEN NANRUI HUATENG NEW ENERGY Co.,Ltd. |
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