CN200980041Y - An interleaved parallel connection converter with a passive clamped soft switch in a high gain and rising voltage type - Google Patents
An interleaved parallel connection converter with a passive clamped soft switch in a high gain and rising voltage type Download PDFInfo
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- CN200980041Y CN200980041Y CN 200620140966 CN200620140966U CN200980041Y CN 200980041 Y CN200980041 Y CN 200980041Y CN 200620140966 CN200620140966 CN 200620140966 CN 200620140966 U CN200620140966 U CN 200620140966U CN 200980041 Y CN200980041 Y CN 200980041Y
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- 230000008878 coupling Effects 0.000 claims abstract description 61
- 238000010168 coupling process Methods 0.000 claims abstract description 61
- 238000005859 coupling reaction Methods 0.000 claims abstract description 61
- 238000004804 winding Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000002459 sustained effect Effects 0.000 description 27
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Abstract
The utility model discloses a high-gain and voltage-rise-type alternative-parallel convertor with a passive clamping soft switch, comprising two power switching tubes, two clamping diodes, two clamping capacities, two after-flow-diodes and two coupling inductances, wherein the two coupling inductances separately have three windings. The utility model uses the leakage inductance of the two couplings to realize open with null current of the power switching tubes, and uses the clamping diodes and clamping capacities to realize the soft cut-out of the power switching tubes and the lossless transfer of the leakage inductance energy, and also uses the second and the third winding of the two coupling inductances to realize high gain output of the converter, not only improves efficiency of the voltage-rise-type alternative-parallel circuit, but also has no voltage overshoot as the power switching tubes off and no current overshoot as the after-flow-diodes on in the current conversion process.
Description
Technical field
The utility model relates to a kind of DC-DC converter.Be passive clamping soft switch high gain boost interleaved parallel connection converter specifically.
Background technology
Conventional booster type (Boost) crisscross parallel DC-DC converter, comprise two inductance, two fly-wheel diodes, two power switch pipes, the drain electrode of first power switch pipe links to each other with the anode of first diode and an end of first inductance, the drain electrode of second power switch pipe links to each other with the anode of second diode and an end of second inductance, and the other end of first inductance links to each other with the other end of second inductance.This boost interleaved parallel dc dc converter output voltage gain is less, and the voltage stress of power switch pipe is bigger, and power switch pipe is hard switching work, and switching loss is bigger, and the reverse recovery current of fly-wheel diode is bigger, and reverse recovery loss is bigger.In recent years, studied some soft switch circuits in succession, mainly contained two kinds: a kind of is the soft switch of realizing power switch pipe by additional active power switch and devices such as passive inductance, electric capacity; Another kind is a soft switch of realizing power switch pipe by devices such as additional diode and passive inductance, electric capacity.Though the soft switch that can realize power switch pipe of these two kinds of methods, the additional circuit complexity, and can not reduce the voltage stress of power switch pipe, can not realize the high-gain function of converter.
Summary of the invention
The purpose of this utility model provides the output voltage gain height, and the input current ripple is little, and output current ripple is little, and power switch pipe quantity is few, and is simple in structure, and the passive clamping soft switch high gain boost interleaved parallel connection converter of noenergy loss.
Technical solution of the present utility model is: passive clamping soft switch high gain boost interleaved parallel connection converter comprises two power switch pipes, two clamping diodes, two clamping capacitances, two fly-wheel diodes and two coupling inductances, two coupling inductances have three windings respectively, one end of first winding of first coupling inductance links to each other with an end of first winding of second coupling inductance, the other end of first winding of first coupling inductance links to each other with the anode of the source electrode of first power switch pipe and first clamping diode, one end of one end of the negative electrode of first clamping diode and first clamping capacitance and second winding of first coupling inductance links to each other, the other end of second winding of first coupling inductance links to each other with an end of the tertiary winding of second coupling inductance, the other end of the tertiary winding of second coupling inductance links to each other with the first fly-wheel diode anode, the other end of first winding of second coupling inductance links to each other with the anode of the source electrode of second power switch pipe and second clamping diode, one end of one end of the negative electrode of second clamping diode and second clamping capacitance and second winding of second coupling inductance links to each other, the other end of second winding of second coupling inductance links to each other with an end of the tertiary winding of first coupling inductance, the other end of the tertiary winding of first coupling inductance links to each other with the second fly-wheel diode anode, the negative electrode of first fly-wheel diode links to each other with the negative electrode of second fly-wheel diode, the other end of first clamping capacitance and second clamping capacitance links to each other with the drain electrode of first power switch pipe and second power switch pipe jointly, perhaps jointly link to each other with the contact of first winding of first winding of first coupling inductance and second coupling inductance, negative electrode perhaps common and first fly-wheel diode and second fly-wheel diode connects altogether.
During work, utilize the leakage inductance of two coupling inductances to realize the soft shutoff of zero current turning-on and first, second two fly-wheel diodes of first power switch pipe, second power switch pipe; When first power switch pipe and second power switch pipe turn-off, because the existence of first clamping diode, first clamping capacitance and second clamping diode, second clamping capacitance has realized that the soft clamping of first power switch pipe and second power switch pipe turn-offs.Simultaneously, each switch periods first clamping capacitance, second clamping capacitance are collected the leakage inductance energy of first coupling inductance, second coupling inductance, and finally transfer to load, have realized the harmless operation of passive clamp circuit.
Passive clamping soft switch high gain boost interleaved parallel connection converter of the present utility model, utilized the leakage inductance of two coupling inductances to realize the zero current turning-on of power switch pipe, the passive clamp circuit that utilizes clamping diode and clamping capacitance to form has been realized the soft shutoff of power switch pipe and the harmless transfer of leakage inductance energy, utilize second of two coupling inductances, the tertiary winding has been realized the high-gain output of converter, need not extra power switch and inductance element, attachment element is few, simple in structure, control is convenient, noenergy losser in the circuit, can improve the efficient of boost interleaved parallel circuit, and in the commutation course, no-voltage overshoot when power switch pipe turn-offs, no current overshoot when fly-wheel diode is opened.
Description of drawings
Fig. 1 is the circuit diagram of first kind of passive clamping soft switch high gain boost interleaved parallel connection converter;
Fig. 2 is the circuit diagram of second kind of passive clamping soft switch high gain boost interleaved parallel connection converter;
Fig. 3 is the circuit diagram of the third passive clamping soft switch high gain boost interleaved parallel connection converter;
Fig. 4 is the quiescent operation oscillogram of passive clamping soft switch high gain boost interleaved parallel connection converter.
Embodiment
Referring to Fig. 1, passive clamping soft switch high gain boost interleaved parallel connection converter of the present utility model, comprise two power switch tube S 1, S2, two clamping diode Dc1, Dc2, two clamping capacitance Cc1, Cc2, two sustained diode o1, Do2 and two coupling inductances, first coupling inductance has three winding L 1a, L1b, L1c, second coupling inductance has three winding L 2a, L2b, L2c, the end of the first winding L 1a of first coupling inductance links to each other with the end of the first winding L 2a of second coupling inductance, the other end of the first winding L 1a of first coupling inductance links to each other with the anode of the source electrode of first power switch tube S 1 and the first clamping diode Dc1, the end of the end of the negative electrode of the first clamping diode Dc1 and the first clamping capacitance Cc1 and the second winding L 1b of first coupling inductance links to each other, the other end of the second winding L 1b of first coupling inductance links to each other with the end of the tertiary winding L2c of second coupling inductance, the other end of the tertiary winding L2c of second coupling inductance links to each other with the first sustained diode o1 anode, the other end of the first winding L 2a of second coupling inductance links to each other with the anode of the source electrode of second power switch tube S 2 and the second clamping diode Dc2, the end of the end of the negative electrode of the second clamping diode Dc2 and the second clamping capacitance Cc2 and the second winding L 2b of second coupling inductance links to each other, the other end of the second winding L 2b of second coupling inductance links to each other with the end of the tertiary winding L1c of first coupling inductance, the other end of the tertiary winding L1c of first coupling inductance links to each other with the second sustained diode o2 anode, the negative electrode of the first sustained diode o1 links to each other with the negative electrode of the second sustained diode o2, in the instantiation shown in Figure 1, the, the second clamping capacitance Cc1, the other end of Cc2 links to each other with the drain electrode of first power switch tube S 1 and the drain electrode of second power switch tube S 2 jointly.
Perhaps also can be as shown in Figure 2, the other end of first, second clamping capacitance Cc1, Cc2 links to each other with the contact of the first winding L 2a of the first winding L 1a of first coupling inductance and second coupling inductance jointly.
Perhaps also can be as shown in Figure 3, the common negative electrode with the first sustained diode o1 and the second sustained diode o2 of the other end of first, second clamping capacitance Cc1, Cc2 connects altogether.
There are eight kinds of courses of work (course of work of Fig. 1～converter shown in Figure 3 is identical) in passive clamping soft switch high gain boost interleaved parallel connection converter, the change of current between promptly 1 shutoff of first power switch tube S and the first clamping diode Dc1 open; The first sustained diode o1 opening process; The first clamping diode Dc1 turn off process; The change of current between the first sustained diode o1 shutoff and first power switch tube S 1 are opened; The change of current between 2 shutoffs of second power switch tube S and the second clamping diode Dc2 open; The second sustained diode o2 opening process; The second clamping diode Dc2 turn off process; The change of current between the second sustained diode o2 shutoff and second power switch tube S 2 are opened.Because the symmetry of circuit is that example is analyzed as follows with the commutation course between first power switch tube S 1 and the first clamping diode Dc1 and the first sustained diode o1 only, the quiescent operation waveform is referring to Fig. 4:
The change of current between 1 shutoff of first power switch tube S and the first clamping diode Dc1 open:
Before the change of current, circuit is in first power switch tube S 1,2 conductings of second power switch tube S, and the first clamping diode Dc1, the second clamping diode Dc2 turn-off, the steady-working state that the first sustained diode o1, the second sustained diode o2 turn-off.When first power switch tube S 1 is turn-offed, voltage rises rapidly on first power switch tube S 1, the voltage at the first clamping diode Dc1 two ends is dropped rapidly to zero, the first clamping diode Dc1 is open-minded, because the effect of the first clamping capacitance Cc1, the voltage at first power switch tube S, 1 two ends is certain voltage value by clamp, has realized that the soft clamping of first power switch tube S 1 turn-offs.
The first sustained diode o1 opening process:
After the first clamping diode Dc1 opened, the voltage on the first clamping capacitance Cc1 rose so that certain slope is linear from certain value, and the voltage linear at the first sustained diode o1 two ends drops to zero, and the first sustained diode o1 is open-minded.Circuit enters first power switch tube S 1 and turn-offs the first clamping diode Dc conducting, the steady-working state of the first sustained diode o1 conducting.
The first clamping diode Dc1 turn off process:
After the first sustained diode o1 conducting, the energy of first coupling inductance is to load transfer, electric current on the first clamping diode Dc1 descends so that certain slope is linear, and when the electric current on the first clamping diode Dc1 dropped to zero, the first clamping diode Dc1 turn-offed naturally.Circuit enters first power switch tube S 1 and turn-offs, and the first clamping diode Dc turn-offs, the first sustained diode o1 conducting, and the first clamping capacitance Cc1 goes up the steady-working state of energy to load transfer.
Commutation course between the first sustained diode o1 shutoff and first power switch tube S 1 are opened:
Before the first sustained diode o1 turn-offs, the leakage inductance electric current of first coupling inductance is zero, when first power switch tube S 1 is opened, the electric current of first power switch tube S 1 rises from zero so that certain slope is linear, realized the zero current turning-on of first power switch tube S 1, the electric current of the first sustained diode o1 descends so that certain slope is linear, and when the electric current of the first sustained diode o1 dropped to zero, the first sustained diode o1 turn-offed.Like this, reduce the reverse recovery current of the first sustained diode o1, reduced the reverse recovery loss that the first sustained diode o1 causes.
Claims (1)
1. passive clamping soft switch high gain boost interleaved parallel connection converter, comprise two power switch pipe (S1, S2), two clamping diode (Dc1, Dc2), two clamping capacitance (Cc1, Cc2), two fly-wheel diode (Do1, Do2) and two coupling inductances, it is characterized in that first coupling inductance has three winding (L1a, L1b, L1c), second coupling inductance has three winding (L2a, L2b, L2c), one end of first winding (L1a) of first coupling inductance links to each other with an end of first winding (L2a) of second coupling inductance, the other end of first winding (L1a) of first coupling inductance links to each other with the anode of the source electrode of first power switch pipe (S1) and first clamping diode (Dc1), one end of one end of the negative electrode of first clamping diode (Dc1) and first clamping capacitance (Cc1) and second winding (L1b) of first coupling inductance links to each other, the other end of second winding (L1b) of first coupling inductance links to each other with an end of the tertiary winding (L2c) of second coupling inductance, the other end of the tertiary winding of second coupling inductance (L2c) links to each other with first fly-wheel diode (Do1) anode, the other end of first winding (L2a) of second coupling inductance links to each other with the anode of the source electrode of second power switch pipe (S2) and second clamping diode (Dc2), one end of one end of the negative electrode of second clamping diode (Dc2) and second clamping capacitance (Cc2) and second winding (L2b) of second coupling inductance links to each other, the other end of second winding (L2b) of second coupling inductance links to each other with an end of the tertiary winding (L1c) of first coupling inductance, the other end of the tertiary winding of first coupling inductance (L1c) links to each other with second fly-wheel diode (Do2) anode, the negative electrode of first fly-wheel diode (Do1) links to each other with the negative electrode of second fly-wheel diode (Do2), the other end of first clamping capacitance (Cc1) and second clamping capacitance (Cc2) links to each other with the drain electrode of first power switch pipe (S1) and second power switch pipe (S2) jointly, the contact of first winding (L1a) of perhaps common and first coupling inductance and first winding (L2a) of second coupling inductance links to each other, perhaps jointly and the negative electrode of first fly-wheel diode (Do1) and second fly-wheel diode (Do2) connect altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620140966 CN200980041Y (en) | 2006-12-12 | 2006-12-12 | An interleaved parallel connection converter with a passive clamped soft switch in a high gain and rising voltage type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620140966 CN200980041Y (en) | 2006-12-12 | 2006-12-12 | An interleaved parallel connection converter with a passive clamped soft switch in a high gain and rising voltage type |
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| CN200980041Y true CN200980041Y (en) | 2007-11-21 |
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| CN 200620140966 Expired - Fee Related CN200980041Y (en) | 2006-12-12 | 2006-12-12 | An interleaved parallel connection converter with a passive clamped soft switch in a high gain and rising voltage type |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629823A (en) * | 2012-04-05 | 2012-08-08 | 安徽工业大学 | DC/DC (direct-current/direct-current) converter with high step-up ratio and low switch voltage press |
| CN101577420B (en) * | 2008-05-09 | 2013-01-16 | 万国半导体股份有限公司 | Device and method for limiting drain-source voltage of transformer-coupled push pull power conversion circuit |
| CN102931845A (en) * | 2011-08-12 | 2013-02-13 | 旭丽电子(广州)有限公司 | Voltage boosting conversion device and voltage boosting conversion circuit |
| CN103532361A (en) * | 2013-09-30 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Magnetic integrated switching power supply |
-
2006
- 2006-12-12 CN CN 200620140966 patent/CN200980041Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577420B (en) * | 2008-05-09 | 2013-01-16 | 万国半导体股份有限公司 | Device and method for limiting drain-source voltage of transformer-coupled push pull power conversion circuit |
| CN102931845A (en) * | 2011-08-12 | 2013-02-13 | 旭丽电子(广州)有限公司 | Voltage boosting conversion device and voltage boosting conversion circuit |
| CN102629823A (en) * | 2012-04-05 | 2012-08-08 | 安徽工业大学 | DC/DC (direct-current/direct-current) converter with high step-up ratio and low switch voltage press |
| CN103532361A (en) * | 2013-09-30 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Magnetic integrated switching power supply |
| CN103532361B (en) * | 2013-09-30 | 2016-11-09 | 哈尔滨工业大学深圳研究生院 | A kind of magnetic integrated switch power |
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