CN1352487A - Composite active clamp DC-DC converter - Google Patents
Composite active clamp DC-DC converter Download PDFInfo
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- CN1352487A CN1352487A CN 01132208 CN01132208A CN1352487A CN 1352487 A CN1352487 A CN 1352487A CN 01132208 CN01132208 CN 01132208 CN 01132208 A CN01132208 A CN 01132208A CN 1352487 A CN1352487 A CN 1352487A
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- 239000002131 composite material Substances 0.000 title claims description 25
- 230000009466 transformation Effects 0.000 claims description 76
- 230000006698 induction Effects 0.000 claims description 59
- 239000003990 capacitor Substances 0.000 claims description 42
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000010355 oscillation Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention discloses a complex type active clamping DC-Dc converter. The basic converting circuit is composed of main switch tube, diode, assistant switch tube, clamping capacitance and assistant inductance group. The said basic converting circuit replaces buck, boost, buckboost, CuK, SEPIC and Zeta 6 kinds of basic converting circuits used in conventional converter. The invention has advantages of simple structure, low cost, and high working efficiency. Research recovery current of the diode is effectively restrained. Both of main and assistant switches of converter are zero voltage workable switches. When switch tube being shut down, the voltage taken by switch tube in the invented converter is smaller, comparing wite the traditional converter. Also when switch tube being shut down, the voltage between two end of diode is clamped without voltage oscillation and overshoot. The voltage taken by clamping capacitance is also smaller than the voltage in traditional converter.
Description
Technical field
The present invention relates to DC-DC converter.
Background technology
Shown in Figure 1 is connected with a rectifier diode D2 by a switching tube M1, and have at contact and to draw and have the circuit that label is three links of 1,2,3, be among Fig. 2 a), b), c), d), e), f) shown in the DC-DC converter of buck, boost, buckboost, Cuk, 6 kinds of routines such as SEPIC, Zeta in the basic transformation circuit, Vin among each figure of Fig. 2 is the input voltage port of converter, Vo is the output voltage port of converter, L and L ' are the inductance in the converter, and C is the electric capacity in the converter.The weak point of the DC-DC converter that is made of this basic transformation circuit is that converter is hard switching work, and the caused dependent loss of diode reverse recovery is very high in the converter in continuous current mode work, and the current stress of switching tube is big.In recent years, in order to improve the efficient of DC-DC converter, many soft switch techniques are used in succession.Some converter using Zero voltage transition technology, the reverse recovery current that under the situation that does not increase device voltage stress, has suppressed diode, and realized the zero voltage switch work of main switch, still, often the auxiliary switch device in the converter is not operated in soft on off state; Though common active clamp technology can realize the soft switch work of main switch and auxiliary switch simultaneously, but the voltage stress of main switch and auxiliary switch increases many, and voltage stress increases along with the increase of control duty ratio and load, parasitic capacitance and the auxiliary induction resonance that diode closes its two ends of having no progeny in the converter produces more serious voltage oscillation in addition, and voltage stress is big.
Summary of the invention
The purpose of this invention is to provide the reverse recovery current that a class can suppress diode in the converter, guarantee that all device for power switching all realize the composite active clamp DC-DC converter of soft switch work.
For reaching above-mentioned purpose, the measure that the present invention takes is to remove to substitute in the conventional DC-DC converter as shown in Figure 1 the basic transformation circuit that is made of switching tube and diode with the basic transformation circuit that main switch M1, diode D2, auxiliary switch M3, clamp capacitor Cc and auxiliary induction L1 constitute.Wherein the end after the series circuit of auxiliary switch M3 and clamp capacitor Cc and the auxiliary induction L1 parallel connection links to each other with main switch M1, the other end links to each other with diode, the arbitrary end in two parallel connected end and the other end of main switch M1, the other end of diode is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch M3 is in parallel with the series circuit of diode D2 with main switch M1 with the series circuit of clamp capacitor Cc, arbitrary termination auxiliary induction L1 in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction L1 and the contact of main switch M1 and diode are respectively the link of basic transformation circuit in converter.
Concrete technical solution has:
Scheme 3, composite active clamp DC-DC converter of the present invention, it is buckboost converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch M1, diode D2, auxiliary switch M3, clamp capacitor Cc and auxiliary induction L1, wherein the end after the series circuit of auxiliary switch M3 and clamp capacitor Cc and the auxiliary induction L1 parallel connection links to each other with main switch M1, the other end links to each other with diode, the arbitrary end in two parallel connected end and the other end of main switch M1, the other end of diode is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch M3 is in parallel with the series circuit of diode D2 with main switch M1 with the series circuit of clamp capacitor Cc, arbitrary termination auxiliary induction L1 in two parallel connected end, the contact of the other end of the other end in the parallel connected end and auxiliary induction L1 and main switch M1 and diode D2 is respectively the link of basic transformation circuit in converter.
Scheme 4, composite active clamp DC-DC converter of the present invention, it is Cuk converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch M1, diode D2, auxiliary switch M3, clamp capacitor Cc and auxiliary induction L1, wherein the end after the series circuit of auxiliary switch M3 and clamp capacitor Cc and the auxiliary induction L1 parallel connection links to each other with main switch M1, the other end links to each other with diode, the arbitrary end in two parallel connected end and the other end of main switch M1, the other end of diode is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch M3 is in parallel with the series circuit of diode D2 with main switch M1 with the series circuit of clamp capacitor Cc, arbitrary termination auxiliary induction L1 in two parallel connected end, the contact of the other end of the other end in the parallel connected end and auxiliary induction L1 and main switch M1 and diode D2 is respectively the link of basic transformation circuit in converter.
Scheme 5, composite active clamp DC-DC converter of the present invention, it is SEPIC converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch M1, diode D2, auxiliary switch M3, clamp capacitor Cc and auxiliary induction L1, wherein the end after the series circuit of auxiliary switch M3 and clamp capacitor Cc and the auxiliary induction L1 parallel connection links to each other with main switch M1, the other end links to each other with diode, the arbitrary end in two parallel connected end and the other end of main switch M1, the other end of diode is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch M3 is in parallel with the series circuit of diode D2 with main switch M1 with the series circuit of clamp capacitor Cc, arbitrary termination auxiliary induction L1 in two parallel connected end, the contact of the other end of the other end in the parallel connected end and auxiliary induction L1 and main switch M1 and diode D2 is respectively the link of basic transformation circuit in converter.
Scheme 6, composite active clamp DC-DC converter of the present invention, it is Zeta converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch M1, diode D2, auxiliary switch M3, clamp capacitor Cc and auxiliary induction L1, wherein the end after the series circuit of auxiliary switch M3 and clamp capacitor Cc and the auxiliary induction L1 parallel connection links to each other with main switch M1, the other end links to each other with diode, the arbitrary end in two parallel connected end and the other end of main switch M1, the other end of diode is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch M3 is in parallel with the series circuit of diode D2 with main switch M1 with the series circuit of clamp capacitor Cc, arbitrary termination auxiliary induction L1 in two parallel connected end, the contact of the other end of the other end in the parallel connected end and auxiliary induction L1 and main switch M1 and diode D2 is respectively the link of basic transformation circuit in converter.
Above-mentioned main switch and auxiliary switch can be the power bipolar transistors, also can be insulated door gated transistors or other controlled switching device.
The adding of auxiliary induction L1 makes that diode D2 is soft shutoff in the composite active clamp DC-DC converter of the present invention, and reverse recovery current is effectively controlled.Main switch M1 and auxiliary switch M3 carry out in the switch handoff procedure, because the existence of auxiliary induction L1, have no progeny in auxiliary switch M3 pass, the electric current in the inductance L 1 will be to main switch M1 two ends and the equivalent capacity that connects discharge, and main switch M1 will be by open-minded under the no-voltage situation afterwards.After arbitrary switching tube (M1 or M3) was turned off, its both end voltage all was clamped on the fixed voltage, high voltage stress and vibration can not occur.Because at diode D2 blocking interval, main switch M1 and auxiliary switch M3 are conducting state again, so the shutoff voltage of D2 is also by clamper, and voltage stress is low.
Description of drawings
Fig. 1 is the basic transformation circuit in the existing DC-DC converter;
Fig. 2 is the conventional DC-DC converter that contains Fig. 1 basic transformation circuit,
Wherein, figure is the buck DC-DC converter a);
Figure b) be the boost DC-DC converter;
Figure c) be the buckboost DC-DC converter;
Figure d) be the Cuk DC-DC converter;
Figure e) be the SEPIC DC-DC converter;
Figure f) be the Zeta DC-DC converter;
Fig. 3 is one of basic transformation practical circuit of the present invention;
Fig. 4 is two of a basic transformation practical circuit of the present invention;
Fig. 5 is three of a basic transformation practical circuit of the present invention;
Fig. 6 is four of a basic transformation practical circuit of the present invention;
Fig. 7 is the composite active clamp DC-DC converter with Fig. 3 basic transformation circuit;
Fig. 8 is the composite active clamp DC-DC converter with Fig. 4 basic transformation circuit;
Fig. 9 is the composite active clamp DC-DC converter with Fig. 5 basic transformation circuit;
Figure 10 is the composite active clamp DC-DC converter with Fig. 6 basic transformation circuit.
Embodiment
Fig. 3, basic transformation circuit shown in Figure 4 comprise main switch M1, diode D2, auxiliary switch M3, clamp capacitor Cc and auxiliary induction L1, wherein the end after the series circuit of auxiliary switch M3 and clamp capacitor Cc and the auxiliary induction L1 parallel connection links to each other with main switch M1, the other end links to each other with diode, the arbitrary end 3 in two parallel connected end and the other end 1 of main switch M1, the other end 2 of diode is respectively the link of basic transformation circuit in converter.
Fig. 5, basic transformation circuit shown in Figure 6 are that auxiliary switch M3 is in parallel with the series circuit of diode D2 with main switch M1 with the series circuit of clamp capacitor Cc, arbitrary termination auxiliary induction L1 in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction L1 and the contact 3 of main switch M1 and diode are respectively the link of basic transformation circuit in converter.
With the circuit of basic transformation as shown in Figure 1 in 6 kinds of conventional DC-DC converter of Fig. 2, substituting according to the annexation of corresponding link becomes basic transformation circuit shown in Figure 3, just can obtain as Fig. 7 a), b), c), d), e), f) shown in 6 kinds of composite active clamp DC-DC converters of the present invention.
With the circuit of basic transformation as shown in Figure 1 in 6 kinds of conventional DC-DC converter of Fig. 2, substituting according to the annexation of corresponding link becomes basic transformation circuit shown in Figure 4, just can obtain as Fig. 8 a), b), c), d), e), f) shown in 6 kinds of composite active clamp DC-DC converters of the present invention.
With the circuit of basic transformation as shown in Figure 1 in 6 kinds of conventional DC-DC converter of Fig. 2, substituting according to the annexation of corresponding link becomes basic transformation circuit shown in Figure 5, just can obtain as Fig. 9 a), b), c), d), e), f) shown in 6 kinds of composite active clamp DC-DC converters of the present invention.
With the circuit of basic transformation as shown in Figure 1 in 6 kinds of conventional DC-DC converter of Fig. 2, substituting according to the annexation of corresponding link becomes basic transformation circuit shown in Figure 6, just can obtain as Figure 10 a), b), c), d), e), f) shown in 6 kinds of composite active clamp DC-DC converters of the present invention.
When composite active clamp DC-DC converter of the present invention was worked, main switch M1 was identical with the control mode of the switching tube in the corresponding conventional DC-DC converter.The switching frequency of auxiliary switch M3 is identical with the switching frequency of main switch M1, and it finished and its both end voltage is driven after dropping to zero naturally open-mindedly in the common stage of M1 and D2, and drove at main switch M1 and to be turned off before opening.
Claims (6)
1. composite active clamp DC-DC converter, it is buck converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch [M1], diode [D2], auxiliary switch [M3], clamp capacitor [Cc] and auxiliary induction [L1], wherein the end after the series circuit of auxiliary switch [M3] and clamp capacitor [Cc] and auxiliary induction [L1] parallel connection links to each other with main switch [M1], the other end links to each other with diode, the arbitrary end [3] in two parallel connected end and the other end [1] of main switch [M1], the other end of diode [2] is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch [M3] is in parallel with the series circuit of diode [D2] with main switch [M1] with the series circuit of clamp capacitor [Cc], arbitrary termination auxiliary induction [L1] in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction [L1] and main switch [M1] are respectively the link of basic transformation circuit in converter with the contact of diode [D2].
2. composite active clamp DC-DC converter, it is boost converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch [M1], diode [D2], auxiliary switch [M3], clamp capacitor [Cc] and auxiliary induction [L1], wherein the end after the series circuit of auxiliary switch [M3] and clamp capacitor [Cc] and auxiliary induction [L1] parallel connection links to each other with main switch [M1], the other end links to each other with diode, the arbitrary end [3] in two parallel connected end and the other end [1] of main switch [M1], the other end of diode [2] is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch [M3] is in parallel with the series circuit of diode [D2] with main switch [M1] with the series circuit of clamp capacitor [Cc], arbitrary termination auxiliary induction [L1] in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction [L1] and main switch [M1] are respectively the link of basic transformation circuit in converter with the contact of diode [D2].
3. composite active clamp DC-DC converter, it is buckboost converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch [M1], diode [D2], auxiliary switch [M3], clamp capacitor [Cc] and auxiliary induction [L1], wherein the end after the series circuit of auxiliary switch [M3] and clamp capacitor [Cc] and auxiliary induction [L1] parallel connection links to each other with main switch [M1], the other end links to each other with diode, the arbitrary end [3] in two parallel connected end and the other end [1] of main switch [M1], the other end of diode [2] is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch [M3] is in parallel with the series circuit of diode [D2] with main switch [M1] with the series circuit of clamp capacitor [Cc], arbitrary termination auxiliary induction [L1] in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction [L1] and main switch [M1] are respectively the link of basic transformation circuit in converter with the contact of diode [D2].
4. composite active clamp DC-DC converter, it is Cuk converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch [M1], diode [D2], auxiliary switch [M3], clamp capacitor [Cc] and auxiliary induction [L1], wherein the end after the series circuit of auxiliary switch [M3] and clamp capacitor [Cc] and auxiliary induction [L1] parallel connection links to each other with main switch [M1], the other end links to each other with diode, the arbitrary end [3] in two parallel connected end and the other end [1] of main switch [M1], the other end of diode [2] is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch [M3] is in parallel with the series circuit of diode [D2] with main switch [M1] with the series circuit of clamp capacitor [Cc], arbitrary termination auxiliary induction [L1] in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction [L1] and main switch [M1] are respectively the link of basic transformation circuit in converter with the contact of diode [D2].
5. composite active clamp DC-DC converter, it is SEPIC converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch [M1], diode [D2], auxiliary switch [M3], clamp capacitor [Cc] and auxiliary induction [L1], wherein the end after the series circuit of auxiliary switch [M3] and clamp capacitor [Cc] and auxiliary induction [L1] parallel connection links to each other with main switch [M1], the other end links to each other with diode, the arbitrary end [3] in two parallel connected end and the other end [1] of main switch [M1], the other end of diode [2] is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch [M3] is in parallel with the series circuit of diode [D2] with main switch [M1] with the series circuit of clamp capacitor [Cc], arbitrary termination auxiliary induction [L1] in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction [L1] and main switch [M1] are respectively the link of basic transformation circuit in converter with the contact of diode [D2].
6. composite active clamp DC-DC converter, it is Zeta converter with three link basic transformation circuit, it is characterized in that said basic transformation circuit comprises main switch [M1], diode [D2], auxiliary switch [M3], clamp capacitor [Cc] and auxiliary induction [L1], wherein the end after the series circuit of auxiliary switch [M3] and clamp capacitor [Cc] and auxiliary induction [L1] parallel connection links to each other with main switch [M1], the other end links to each other with diode, the arbitrary end [3] in two parallel connected end and the other end [1] of main switch [M1], the other end of diode [2] is respectively the link of basic transformation circuit in converter, perhaps auxiliary switch [M3] is in parallel with the series circuit of diode [D2] with main switch [M1] with the series circuit of clamp capacitor [Cc], arbitrary termination auxiliary induction [L1] in two parallel connected end, the other end of the other end in the parallel connected end and auxiliary induction [L1] and main switch [M1] are respectively the link of basic transformation circuit in converter with the contact of diode [D2].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01132208 CN1120563C (en) | 2001-11-13 | 2001-11-13 | Composite active clamp DC-Dc converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01132208 CN1120563C (en) | 2001-11-13 | 2001-11-13 | Composite active clamp DC-Dc converter |
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| Publication Number | Publication Date |
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| CN1352487A true CN1352487A (en) | 2002-06-05 |
| CN1120563C CN1120563C (en) | 2003-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01132208 Expired - Fee Related CN1120563C (en) | 2001-11-13 | 2001-11-13 | Composite active clamp DC-Dc converter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337392C (en) * | 2003-12-26 | 2007-09-12 | 台达电子工业股份有限公司 | DC/DC converter having voltage clamping circuit |
| CN106452057A (en) * | 2016-09-29 | 2017-02-22 | 北京印刷学院 | Novel BUCK converter and control method |
| CN109639132A (en) * | 2018-12-19 | 2019-04-16 | 北京理工大学 | A kind of resonant switched capacitor converter |
| WO2019233414A1 (en) * | 2018-06-05 | 2019-12-12 | 华为技术有限公司 | Power converter and related system |
-
2001
- 2001-11-13 CN CN 01132208 patent/CN1120563C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337392C (en) * | 2003-12-26 | 2007-09-12 | 台达电子工业股份有限公司 | DC/DC converter having voltage clamping circuit |
| CN106452057A (en) * | 2016-09-29 | 2017-02-22 | 北京印刷学院 | Novel BUCK converter and control method |
| CN106452057B (en) * | 2016-09-29 | 2019-05-14 | 北京印刷学院 | A kind of novel B UCK converter and control method |
| WO2019233414A1 (en) * | 2018-06-05 | 2019-12-12 | 华为技术有限公司 | Power converter and related system |
| US11437904B2 (en) | 2018-06-05 | 2022-09-06 | Huawei Digital Power Technologies Co., Ltd. | Power converter and related system |
| US11784552B2 (en) | 2018-06-05 | 2023-10-10 | Huawei Digital Power Technologies Co., Ltd. | Power converter and related system |
| CN109639132A (en) * | 2018-12-19 | 2019-04-16 | 北京理工大学 | A kind of resonant switched capacitor converter |
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| Publication number | Publication date |
|---|---|
| CN1120563C (en) | 2003-09-03 |
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Granted publication date: 20030903 Termination date: 20201113 |