CN205544981U - Can realize generating line facilitating equalized conditioning's switching power supply - Google Patents
Can realize generating line facilitating equalized conditioning's switching power supply Download PDFInfo
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- CN205544981U CN205544981U CN201620095558.7U CN201620095558U CN205544981U CN 205544981 U CN205544981 U CN 205544981U CN 201620095558 U CN201620095558 U CN 201620095558U CN 205544981 U CN205544981 U CN 205544981U
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Abstract
The utility model discloses a can realize generating line facilitating equalized conditioning's switching power supply, including rectifier circuit, the input of rectifier circuit's generating line output linked switch power major loop, control of switching power supply owner loop connection PWM and sampling circuit, provide operating voltage for PWM control and sampling circuit, the PWM control signal that PWM control and sampling circuit produced meets power MOSFE control circuit, the output voltage that the switching power supply major loop produced provides feedback voltage for power MOSFE control circuit simultaneously, power MOSFET control circuit control power MOSFET's break -make, thereby the power transformer's of control switch power major loop primary winding's break -make. Can satisfy on the one hand the required voltage of back each control circuit of level, voltage that on the other hand can the output of balanced preceding stage rectifier circuit.
Description
Technical field
The utility model relates to field of switch power, particularly relates to a kind of Switching Power Supply being capable of bus well-balanced adjustment.
Background technology
In numerous power electronic equipments are applied, the ratio of fairing is maximum.Along with power supply general power and the increasing development trend of power density, power semiconductor switches device performance improves constantly, the output voltage of rectification circuit is more and more higher, so single electric capacity there may be pressure inadequate situation, need in bus two ends series capacitance thus form the circuit of many level output.This rectification circuit is that the circuit output end of many level output needs Differential Output, otherwise late-class circuit and components and parts can be caused infringement in various degree.
Utility model content
The purpose of this utility model is contemplated to solve the problems referred to above, it is provided that a kind of Switching Power Supply being capable of bus well-balanced adjustment, on the one hand can meet the voltage needed for each control circuit of rear class, on the other hand can equalize the voltage of prime rectification circuit output.
To achieve these goals, the utility model adopts the following technical scheme that
A kind of Switching Power Supply being capable of bus well-balanced adjustment, including rectification circuit, the input of the bus output connecting valve power supply major loop of described rectification circuit, Switching Power Supply major loop connects PWM and controls and sample circuit, operating voltage is provided for PWM control and sample circuit, the pwm control signal that PWM controls and sample circuit produces connects power MOSFE control circuit, the output voltage that Switching Power Supply major loop produces provides feedback voltage for power MOSFE control circuit simultaneously, power MOSFET control circuit controls the break-make of power MOSFET, thus control the break-make of the armature winding of the power transformer of Switching Power Supply major loop.
Described rectification circuit is three-phase bridge rectifier circuit.
Described Switching Power Supply major loop includes that importation circuit, described importation circuit connect the first winding of power transformer T1, and first winding is also connected with power switch circuit, and the secondary windings of power transformer connects secondary output circuit.
The armature winding of described power transformer is made up of the winding that the turn ratio is 1:1 23,45 of two series connection and the reset winding 12 of the same turn ratio, and secondary windings is two windings 67 and 89.
Described importation circuit includes, the output plus terminal of rectification circuit connects the Same Name of Ends 2 of power transformer armature winding 23, and different name end 3 connects the anode clamping down on diode D9, and the negative electrode of D9 connects power switch circuit；
The output negative terminal of rectification circuit connects the Same Name of Ends 4 of power transformer armature winding 45, and different name end 5 connects the anode clamping down on diode D13, and the negative electrode of D13 connects power switch circuit.
Described power switch circuit includes that the first power switch circuit and the second power switch circuit, described first power switch circuit include power MOS pipe Q1, and the drain electrode of Q1 connects the negative electrode of D9, and the source electrode of Q1 is connected to GND through current sampling resistor R1；
Second power switch circuit includes that the drain electrode of power MOS pipe Q2, power MOS pipe Q2 connects the negative electrode of D13, and the source electrode of Q2 is connected to the output negative terminal of rectification circuit through current sampling resistor R2；
Grid control signal DRIVE1 and DRIVE2 of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 is produced by power MOSFET control circuit.
The anode of the negative terminating diode D12 of output of rectification circuit, the negative electrode of D12 connects the Same Name of Ends 1 of reset winding 12, the output plus terminal of rectification circuit connects the positive pole of polar capacitor C1, the negative pole of polar capacitor C1 meets GND, the output negative terminal of rectification circuit connects the negative pole of polar capacitor C2, the positive pole of polar capacitor C2 constitutes magnetic loop together with meeting GND, diode D12 and polar capacitor C1, polar capacitor C2.
Secondary output circuit produces the isolation and amplifier of two-way difference electric pressure: a route winding 89 exports；One route winding 67 exports feedback voltage and PWM controls and the supply voltage VFEED of sample circuit.
Described PWM controls and sample circuit includes power supply control chip U1, and the output voltage of Switching Power Supply major loop is connected sampling resistor R4 after divider resistance R3, R7 dividing potential drop, then connects the feedback input end of U1；
The output plus terminal of rectification circuit connects the power pins of U1 after series resistance R9, R10, R11 and R12, and the power pins of U1 is also simultaneously connected with the output of Switching Power Supply major loop, the most respectively by ground connection after connection diode D15 and electric capacity C8；
One pin of integrated chip U1 is connected to GND after concatenation R8, electric capacity C9, one pin connect R8, electric capacity C9 be connected in series a little, current sampling signal in the primary coil that one pin works in resistance R13 connects power transformer, simultaneously through electric capacity C10 ground connection, output pin produces pwm signal and is connected to power MOSFET control circuit through resistance R5.
Described power MOSFET control circuit includes: the pwm control signal that PWM controls and sample circuit produces is connected to the grid of metal-oxide-semiconductor Q5, the drain electrode of Q5 connects the different name end 3 of the armature winding 34 of driving transformer T2, Same Name of Ends 4 is connected to the output of Switching Power Supply major loop feedback voltage after series resistor R16, diode D18, and the armature winding 12 of driving transformer T2 removes magnetic loop through C11, D16 composition；Secondary windings 910 and 56 output drive signal of driving transformer T2 controls the break-make of MOSFET, thus controls the break-make of the armature winding of the power transformer of Switching Power Supply major loop.
The beneficial effects of the utility model are:
1, in the case of prime output voltage is unbalanced, the winding that voltage is high first works, the voltage meeting step-down of this winding, until the voltage shared on two electric capacity is equal, and being operated in safe range of the protection each components and parts of rear class.
2, drive signal to produce the two paths of signals with frequency homophase through driving transformer, ensure stablizing of primary current circulation when the single work of armature winding and cooperation.
Accompanying drawing explanation
Fig. 1 is overall theory diagram of the present utility model；
Fig. 2 is rectification circuit figure；
Fig. 3 is Switching Power Supply main loop circuit figure；
Fig. 4 is the schematic diagram of PWM control and sample circuit；
Fig. 5 is power MOSFET control circuit figure.
Detailed description of the invention:
With embodiment, the utility model is described further below in conjunction with the accompanying drawings:
A kind of Switching Power Supply being capable of bus well-balanced adjustment, as it is shown in figure 1, include that rectification circuit, Switching Power Supply major loop, PWM control and sample circuit, power MOSFE control circuit.
Rectification circuit, Switching Power Supply major loop, PWM control and sample circuit is sequentially connected with, the input of the bus output connecting valve power supply major loop of rectification circuit, Switching Power Supply major loop connects PWM and controls and sample circuit, operating voltage is provided for it, pwm control signal connects power MOSFE control circuit, power MOSFET control circuit controls the break-make of power MOSFET, thus controls the break-make of power transformer armature winding.
As shown in Figure 2, rectification circuit includes inputting inductance La, Lb, Lc, three-phase electricity input is terminated before input inductance La, Lb, Lc, rear end connects the commutation diode of series connection, La connects anode and the negative electrode of diode D4 of diode D1, Lb connects anode and the negative electrode of diode D5 of diode D2, and Lc connects anode and the negative electrode of diode D6 of diode D3；
The negative pole of polar capacitor C1 and the positive pole of polar capacitor C2 link together output voltage reference zero GND, the positive pole of polar capacitor C1 and diode D1, diode D3, the negative electrode of diode D5 are connected together as output voltage anode+V, and the negative pole of polar capacitor C2 is connected as output voltage negative terminal-V with diode D2, diode D4, the anode of diode D6；
Output+V, GND ,-V link together and are followed by the input of rear class Switching Power Supply major loop.
As it is shown on figure 3, Switching Power Supply main circuit is made up of importation circuit, power transformer, power switch circuit, transformer secondary output output circuit.
Importation circuit is the Same Name of Ends 2 of the output+V connection power transformer armature winding 23 of prime rectification circuit, different name end 3 connects the anode clamping down on diode D9, the negative electrode of D9 connects the drain electrode of power MOS pipe Q1, and the source electrode of Q1 is connected to GND through current sampling resistor R1.
The output GND of prime rectification circuit connects the Same Name of Ends 4 of power transformer armature winding 45, and different name end 5 connects the anode clamping down on diode D13, and the negative electrode of D13 connects the drain electrode of power MOS pipe Q2, and the source electrode of Q2 is connected to-V through current sampling resistor R2.
The negative electrode of the anode connection-V, D12 of D12 connects the Same Name of Ends 1 of reset winding 12, and constitutes magnetic loop together with electric capacity C1, C2.The grid control signal of metal-oxide-semiconductor Q1, Q2 is produced by switching power source chip and controls.
The armature winding of power transformer is made up of the winding that the turn ratio is 1:1 of two series connection and the reset winding of the same turn ratio is constituted, and secondary windings is two groups, is secondary windings 67 and secondary windings 89 respectively.
Power switch circuit is made up of power MOS pipe Q1 and Q2, drain electrode connects armature winding 23 and 45 respectively, the sampled resistance of source electrode connects GND ,-V composition current loop respectively, and control signal DRIVE1 and DRIVE2 are produced the grid being connected to metal-oxide-semiconductor through driving transformer by switching power source chip.
Secondary output circuit produces the isolation and amplifier of two-way difference electric pressure: a road be the Same Name of Ends 7 of winding 67 through D10, L2, C4 output voltage feedback voltage and power supply chip supply voltage VFEED, D11 is that fly-wheel diode forms continuous current circuit with L2, C4；One tunnel is that the Same Name of Ends 9 of winding 89 exports through D8, L1, C3, and D7 is that fly-wheel diode forms continuous current circuit with L1, C3.
As shown in Figure 4, described PWM controls and sample circuit includes: pwm control circuit uses power supply control chip U1 to realize, and described power supply control chip is UC2845.The sample circuit sampling resistor R4 that connects after divider resistance R3, R7 dividing potential drop connects the 2 pin VFB Voltage Feedback inputs of integrated chip U1.+ V connects 7 pin VCC of power supply chip through resistance R9, R10, R11, R12, C8, D15, and 7 pin are also simultaneously connected with the VFEED of secondary windings output.The 8 pin VREF of integrated chip U1 are connected to GND through R8, C9,4 pin RT/CT connection R8, C9 are connected in series a little, current sampling signal in the primary coil that 3 pin are in running order in resistance R13, C10 connect the primary coil of power transformer T1,6 pin produce pwm signal and are connected to post-stage drive circuit through R5.
As shown in Figure 5, described power MOSFET control circuit includes: DRIVE is signally attached to the grid of metal-oxide-semiconductor Q5, the drain electrode of Q5 connects different name end 3 pin of driving transformer armature winding 34, and Same Name of Ends 4 pin is connected to VFEED through R16, D18, and armature winding 12 removes magnetic loop through C11, D16 composition.The Same Name of Ends 9 of secondary windings 910 through D17, R14, be connected to the grid of power MOS pipe Q1, R15 is connected in parallel between the grid of Q1 and source electrode, and different name end 10 connects the source electrode of Q1；The Same Name of Ends 5 of secondary windings 56 through D19, R18, be connected to the grid of power MOS pipe Q2, R17 is connected in parallel between the grid of Q2 and source electrode, and different name end 6 connects the source electrode of Q2.
Working condition of the present utility model: three-phase alternating current exports DC voltage after inputting rectified circuit rectifies, and evenly distributes on two electric capacity C1 and C2.Actually, two electric capacity are shared voltage and always be there is the unbalanced moment, assume that C1 shares voltage more than C2, it is Uc1 that C1 shares voltage, it is Uc2 that C2 shares voltage, when power transformer T1 armature winding 23 turns on, same voltage Uc1 (on just lower negative) can be sensed at winding 45, 4 pin are GND, 5 pin (anode of D13) are-Uc1, and the voltage being initially added in C2 two ends is Uc2, C2 the most extremely GND, C2 negative pole is-Uc2, if ignoring sampling resistor pressure drop and the pressure drop of metal-oxide-semiconductor Q2 body diode, the negative electrode of D13 is similarly-Uc2, level-the Uc2 of diode D13 negative electrode is more than the level-Uc1 of D13 anode, the reverse-biased cut-off of diode D13 and be not turned on.And winding 23 is after switch, electric current respectively flows through C1 and C2, electric capacity C1 electric discharge simultaneously electric capacity C2 charging until the balance of voltage on two electric capacity.
If C1 shares voltage less than C2, the course of work is contrary to the above, by this way equilibrium prime bus output voltage.After reaching equilibrium, winding 23 and winding 45 are cascaded and work simultaneously.For ensureing that armature winding is at single work and cooperation switching instant normally, the pwm signal that PWM controls and sample circuit produces, it is divided into two-way with the driving signal of frequency homophase through driving transformer and rear class control circuit, it is ensured that the conducting of two metal-oxide-semiconductors is normal.
The task that wherein in power transformer secondary windings, the VFEED of output had both completed to power to power supply chip is simultaneously as sampled voltage source, it is ensured that power supply chip and the normal work of Ge Lu output.
Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art need not to pay various amendments or deformation that creative work can make still within protection domain of the present utility model.
Claims (10)
1. the Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, including rectification circuit, the input of the bus output connecting valve power supply major loop of described rectification circuit, Switching Power Supply major loop connects PWM and controls and sample circuit, operating voltage is provided for PWM control and sample circuit, the pwm control signal that PWM controls and sample circuit produces connects power MOSFE control circuit, the output voltage that Switching Power Supply major loop produces provides feedback voltage for power MOSFE control circuit simultaneously, power MOSFET control circuit controls the break-make of power MOSFET, thus control the break-make of the armature winding of the power transformer of Switching Power Supply major loop.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, is characterized in that, described rectification circuit is three-phase bridge rectifier circuit.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, described Switching Power Supply major loop includes importation circuit, described importation circuit connects the first winding of power transformer T1, first winding is also connected with power switch circuit, and the secondary windings of power transformer connects secondary output circuit.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, the armature winding of described power transformer is made up of the winding that the turn ratio is 1:1 23,45 of two series connection and the reset winding 12 of the same turn ratio, and secondary windings is two windings 67 and 89.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, described importation circuit includes, the output plus terminal of rectification circuit connects the Same Name of Ends 2 of power transformer armature winding 23, different name end 3 connects the anode clamping down on diode D9, and the negative electrode of D9 connects power switch circuit；
The output negative terminal of rectification circuit connects the Same Name of Ends 4 of power transformer armature winding 45, and different name end 5 connects the anode clamping down on diode D13, and the negative electrode of D13 connects power switch circuit.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, described power switch circuit includes the first power switch circuit and the second power switch circuit, described first power switch circuit includes power MOS pipe Q1, the drain electrode of Q1 connects the negative electrode of D9, and the source electrode of Q1 is connected to GND through current sampling resistor R1；
Second power switch circuit includes that the drain electrode of power MOS pipe Q2, power MOS pipe Q2 connects the negative electrode of D13, and the source electrode of Q2 is connected to the output negative terminal of rectification circuit through current sampling resistor R2；
Grid control signal DRIVE1 and DRIVE2 of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 is produced by power MOSFET control circuit.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, the anode of the negative terminating diode D12 of output of rectification circuit, the negative electrode of D12 connects the Same Name of Ends 1 of reset winding 12, the output plus terminal of rectification circuit connects the positive pole of polar capacitor C1, the negative pole of polar capacitor C1 meets GND, the output negative terminal of rectification circuit connects the negative pole of polar capacitor C2, the positive pole of polar capacitor C2 constitutes magnetic loop together with meeting GND, diode D12 and polar capacitor C1, polar capacitor C2.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, is characterized in that, secondary output circuit produces the isolation and amplifier of two-way difference electric pressure: a route winding 89 exports；One route winding 67 exports feedback voltage and PWM controls and the supply voltage VFEED of sample circuit.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, described PWM controls and sample circuit includes power supply control chip U1, the output voltage of Switching Power Supply major loop is connected sampling resistor R4 after divider resistance R3, R7 dividing potential drop, then connects the feedback input end of U1；
The output plus terminal of rectification circuit connects the power pins of U1 after series resistance R9, R10, R11 and R12, and the power pins of U1 is also simultaneously connected with the output of Switching Power Supply major loop, the most respectively by ground connection after connection diode D15 and electric capacity C8；
One pin of integrated chip U1 is connected to GND after concatenation R8, electric capacity C9, one pin connect R8, electric capacity C9 be connected in series a little, current sampling signal in the primary coil that one pin works in resistance R13 connects power transformer, simultaneously through electric capacity C10 ground connection, output pin produces pwm signal and is connected to power MOSFET control circuit through resistance R5.
A kind of Switching Power Supply being capable of bus well-balanced adjustment, it is characterized in that, described power MOSFET control circuit includes: the pwm control signal that PWM controls and sample circuit produces is connected to the grid of metal-oxide-semiconductor Q5, the drain electrode of Q5 connects the different name end 3 of the armature winding 34 of driving transformer T2, Same Name of Ends 4 is connected to the output of Switching Power Supply major loop feedback voltage after series resistor R16, diode D18, and the armature winding 12 of driving transformer T2 removes magnetic loop through C11, D16 composition；Secondary windings 910 and 56 output drive signal of driving transformer T2 controls the break-make of MOSFET, thus controls the break-make of the armature winding of the power transformer of Switching Power Supply major loop.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620095558.7U CN205544981U (en) | 2016-01-29 | 2016-01-29 | Can realize generating line facilitating equalized conditioning's switching power supply |
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| CN201620095558.7U CN205544981U (en) | 2016-01-29 | 2016-01-29 | Can realize generating line facilitating equalized conditioning's switching power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790613A (en) * | 2016-01-29 | 2016-07-20 | 山东鲁能智能技术有限公司 | Switching power supply capable of achieving balanced adjustment of bus |
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2016
- 2016-01-29 CN CN201620095558.7U patent/CN205544981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790613A (en) * | 2016-01-29 | 2016-07-20 | 山东鲁能智能技术有限公司 | Switching power supply capable of achieving balanced adjustment of bus |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 250101 Electric Power Intelligent Robot Production Project 101 in Jinan City, Shandong Province, South of Feiyue Avenue and East of No. 26 Road (ICT Industrial Park) Patentee after: National Network Intelligent Technology Co., Ltd. Address before: 250101 Shandong city of Ji'nan province high tech Zone (Lixia District) Xinluo Avenue No. 2008 silver bearing building B block 626 Patentee before: Shandong Luneng Intelligent Technology Co., Ltd. |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201210 Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee after: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch Address before: 250101 power intelligent robot production project 101 south of Feiyue Avenue and east of No.26 Road (in ICT Industrial Park) in Suncun District of Gaoxin, Jinan City, Shandong Province Patentee before: National Network Intelligent Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee after: Shandong luruan Digital Technology Co.,Ltd. smart energy branch Address before: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee before: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch |
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| CP01 | Change in the name or title of a patent holder |