CN1352486A - Minimum voltage type active clamp DC-DC converter - Google Patents
Minimum voltage type active clamp DC-DC converter Download PDFInfo
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- CN1352486A CN1352486A CN 01132207 CN01132207A CN1352486A CN 1352486 A CN1352486 A CN 1352486A CN 01132207 CN01132207 CN 01132207 CN 01132207 A CN01132207 A CN 01132207A CN 1352486 A CN1352486 A CN 1352486A
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Abstract
The invention discloses a least-voltage type active clamping DC-DC converter. Circuit of the converter is formed as follows: Clamping capacitance cascaded to assistant inductance then is connected to assistant switch tube in parallel. The one end of above formed circuit is connected to a main switch tube and another end is connected to a diode, forming an invented basic converting circuit that replaces buck, boost, buckboost, Cuk, SEPIC and Zeta 6 kinds of basic converting circuit used in conventional converter. The invention has advantages of simple structure, low cost, and high working efficiency. Reverse recovery current of the diode is effectively restrained. Both of main and assistant switches of converter are zero voltage workable switches.
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 minimum voltage type 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, diode, auxiliary switch, clamp capacitor and auxiliary induction constitute.Concrete technical solution has:
Scheme 3, minimum voltage type 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, the series circuit of clamp capacitor Cc and auxiliary induction L1 links to each other with main switch M1 with a end after auxiliary switch M3 is in parallel, the other end links to each other with diode D2, the other end of main switch M1, the contact of the contact of the other end of diode D2 and auxiliary switch M3 and diode D2 or clamp capacitor Cc and auxiliary induction L1 is respectively the link of basic transformation circuit in converter.
Scheme 4, minimum voltage type 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, the series circuit of clamp capacitor Cc and auxiliary induction L1 links to each other with main switch M1 with a end after auxiliary switch M3 is in parallel, the other end links to each other with diode D2, the other end of main switch M1, the contact of the contact of the other end of diode D2 and auxiliary switch M3 and diode D2 or clamp capacitor Cc and auxiliary induction L1 is respectively the link of basic transformation circuit in converter.
Scheme 5, minimum voltage type 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, the series circuit of clamp capacitor Cc and auxiliary induction L1 links to each other with main switch M1 with a end after auxiliary switch M3 is in parallel, the other end links to each other with diode D2, the other end of main switch M1, the contact of the contact of the other end of diode D2 and auxiliary switch M3 and diode D2 or clamp capacitor Cc and auxiliary induction L1 is respectively the link of basic transformation circuit in converter.
Scheme 6, minimum voltage type 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, the series circuit of clamp capacitor Cc and auxiliary induction L1 links to each other with main switch M1 with a end after auxiliary switch M3 is in parallel, the other end links to each other with diode D2, the other end of main switch M1, the contact of the contact of the other end of diode D2 and auxiliary switch M3 and diode D2 or clamp capacitor Cc and auxiliary induction L1 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 minimum voltage type 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 parasitic capacitance 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, does not increase the voltage stress of switching device with respect to the DC-DC converter of routine.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 the minimum voltage type active clamp DC-DC converter with Fig. 3 basic transformation circuit;
Fig. 6 is the minimum voltage type active clamp DC-DC converter with Fig. 4 basic transformation circuit.
Embodiment
Basic transformation circuit shown in Figure 3 comprises main switch M1, diode D2, auxiliary switch M3, clamp capacitor Cc and auxiliary induction L1, the series circuit of clamp capacitor Cc and auxiliary induction L1 links to each other with main switch M1 with a end after auxiliary switch M3 is in parallel, the other end links to each other with diode D2, the other end 1 of main switch M1, the contact 3 of the other end 2 of diode D2 and auxiliary switch M3 and diode D2 is respectively the link of basic transformation circuit in converter, wherein link 3 also can be the contact of clamp capacitor Cc and auxiliary induction L1 as shown in Figure 4.
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. 5 a), b), c), d), e), f) shown in 6 kinds of minimum voltage type 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. 6 a), b), c), d), e), f) shown in 6 kinds of minimum voltage type active clamp DC-DC converters of the present invention.
When minimum voltage type active clamp DC-DC converter of the present invention was worked, main switch M1 adopted identical control mode with 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 is to finish and its both end voltage is driven after dropping to zero naturally open-mindedly in the common stage of M1 and D2, and drives at main switch M1 and to be turned off before opening.
Claims (6)
1. minimum voltage type 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], the series circuit of clamp capacitor [Cc] and auxiliary induction [L1] links to each other with main switch [M1] with a end after auxiliary switch [M3] is in parallel, the other end links to each other with diode [D2], the other end [1] of main switch [M1], the other end [2] of diode [D2] and auxiliary switch [M3] are respectively the link of basic transformation circuit in converter with the contact of diode [D2] or the contact [3] of clamp capacitor [Cc] and auxiliary induction [L1].
2. minimum voltage type 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], the series circuit of clamp capacitor [Cc] and auxiliary induction [L1] links to each other with main switch [M1] with a end after auxiliary switch [M3] is in parallel, the other end links to each other with diode [D2], the other end [1] of main switch [M1], the other end [2] of diode [D2] and auxiliary switch [M3] are respectively the link of basic transformation circuit in converter with the contact of diode [D2] or the contact [3] of clamp capacitor [Cc] and auxiliary induction [L1].
3. minimum voltage type 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], the series circuit of clamp capacitor [Cc] and auxiliary induction [L1] links to each other with main switch [M1] with a end after auxiliary switch [M3] is in parallel, the other end links to each other with diode [D2], the other end [1] of main switch [M1], the other end [2] of diode [D2] and auxiliary switch [M3] are respectively the link of basic transformation circuit in converter with the contact of diode [D2] or the contact [3] of clamp capacitor [Cc] and auxiliary induction [L1].
4. minimum voltage type 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], the series circuit of clamp capacitor [Cc] and auxiliary induction [L1] links to each other with main switch [M1] with a end after auxiliary switch [M3] is in parallel, the other end links to each other with diode [D2], the other end [1] of main switch [M1], the other end [2] of diode [D2] and auxiliary switch [M3] are respectively the link of basic transformation circuit in converter with the contact of diode [D2] or the contact [3] of clamp capacitor [Cc] and auxiliary induction [L1].
5. minimum voltage type 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], the series circuit of clamp capacitor [Cc] and auxiliary induction [L1] links to each other with main switch [M1] with a end after auxiliary switch [M3] is in parallel, the other end links to each other with diode [D2], the other end [1] of main switch [M1], the other end [2] of diode [D2] and auxiliary switch [M3] are respectively the link of basic transformation circuit in converter with the contact of diode [D2] or the contact [3] of clamp capacitor [Cc] and auxiliary induction [L1].
6. minimum voltage type 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], the series circuit of clamp capacitor [Cc] and auxiliary induction [L1] links to each other with main switch [M1] with a end after auxiliary switch [M3] is in parallel, the other end links to each other with diode [D2], the other end [1] of main switch [M1], the other end [2] of diode [D2] and auxiliary switch [M3] are respectively the link of basic transformation circuit in converter with the contact of diode [D2] or the contact [3] of clamp capacitor [Cc] and auxiliary induction [L1].
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CN 01132207 CN1120562C (en) | 2001-11-13 | 2001-11-13 | Minimum voltage type active clamp DC-DC converter |
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CN 01132207 CN1120562C (en) | 2001-11-13 | 2001-11-13 | Minimum voltage type active clamp DC-DC converter |
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CN1352486A true CN1352486A (en) | 2002-06-05 |
CN1120562C CN1120562C (en) | 2003-09-03 |
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Cited By (11)
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CN100342630C (en) * | 2005-07-05 | 2007-10-10 | 北京航空航天大学 | Pressure-reduced type high-power DC/DC converter flexible converter circuit for fuel-cell passenger coach |
CN1998129B (en) * | 2004-07-12 | 2010-06-16 | 奥地利西门子公司 | Method for operating an inverter, and arrangement for carrying out said method |
CN101952786A (en) * | 2007-12-04 | 2011-01-19 | 加州动力研究公司 | SEPIC feed-in step-down controller |
CN102163918A (en) * | 2010-09-13 | 2011-08-24 | 南京航空航天大学 | Bi-directional direct current (DC) converter with active clamping ZVS (zero voltage switch) |
CN103155703A (en) * | 2010-09-29 | 2013-06-12 | 欧司朗股份有限公司 | Circuit arrangement for operating at least two semiconductor light sources |
CN104426396A (en) * | 2013-08-30 | 2015-03-18 | 欧司朗股份有限公司 | Load drive circuit and illuminating equipment comprising same |
CN104682705A (en) * | 2015-02-13 | 2015-06-03 | 华为技术有限公司 | Direct current-direct current bidirectional conversion circuit and power supply |
CN104836491A (en) * | 2015-04-30 | 2015-08-12 | 南京航空航天大学 | Brushless direct current motor driving system for capacitor-less direct-current converter |
CN108712070A (en) * | 2018-05-31 | 2018-10-26 | 重庆大学 | Based on ZCS PWM bi-directional DC-DC CUK converters, transformation system and method |
CN108900083A (en) * | 2018-06-05 | 2018-11-27 | 华为技术有限公司 | power converter and related system |
CN111987904A (en) * | 2020-08-06 | 2020-11-24 | 哈尔滨工程大学 | Non-isolated DC/DC converter |
Families Citing this family (1)
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CN100338860C (en) * | 2005-07-05 | 2007-09-19 | 北京航空航天大学 | Booster type high-power DC/DC converter flexible converter circuit for fuel cell passenger coach |
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2001
- 2001-11-13 CN CN 01132207 patent/CN1120562C/en not_active Expired - Lifetime
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1998129B (en) * | 2004-07-12 | 2010-06-16 | 奥地利西门子公司 | Method for operating an inverter, and arrangement for carrying out said method |
CN100342630C (en) * | 2005-07-05 | 2007-10-10 | 北京航空航天大学 | Pressure-reduced type high-power DC/DC converter flexible converter circuit for fuel-cell passenger coach |
CN101952786A (en) * | 2007-12-04 | 2011-01-19 | 加州动力研究公司 | SEPIC feed-in step-down controller |
CN102163918A (en) * | 2010-09-13 | 2011-08-24 | 南京航空航天大学 | Bi-directional direct current (DC) converter with active clamping ZVS (zero voltage switch) |
CN102163918B (en) * | 2010-09-13 | 2013-05-08 | 南京航空航天大学 | Bi-directional direct current (DC) converter with active clamping ZVS (zero voltage switch) |
CN103155703A (en) * | 2010-09-29 | 2013-06-12 | 欧司朗股份有限公司 | Circuit arrangement for operating at least two semiconductor light sources |
CN104426396B (en) * | 2013-08-30 | 2018-04-27 | 欧司朗股份有限公司 | Load driving circuits and the lighting apparatus including the load driving circuits |
US9832823B2 (en) | 2013-08-30 | 2017-11-28 | Osram Gmbh | Load driving circuit and illumination apparatus including the same |
CN104426396A (en) * | 2013-08-30 | 2015-03-18 | 欧司朗股份有限公司 | Load drive circuit and illuminating equipment comprising same |
CN104682705A (en) * | 2015-02-13 | 2015-06-03 | 华为技术有限公司 | Direct current-direct current bidirectional conversion circuit and power supply |
CN104682705B (en) * | 2015-02-13 | 2017-06-20 | 华为技术有限公司 | A kind of DC two-way changing circuit and power supply |
CN104836491A (en) * | 2015-04-30 | 2015-08-12 | 南京航空航天大学 | Brushless direct current motor driving system for capacitor-less direct-current converter |
CN104836491B (en) * | 2015-04-30 | 2017-05-24 | 南京航空航天大学 | Brushless direct current motor driving system for capacitor-less direct-current converter |
CN108712070A (en) * | 2018-05-31 | 2018-10-26 | 重庆大学 | Based on ZCS PWM bi-directional DC-DC CUK converters, transformation system and method |
CN108900083A (en) * | 2018-06-05 | 2018-11-27 | 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 |
CN111987904A (en) * | 2020-08-06 | 2020-11-24 | 哈尔滨工程大学 | Non-isolated DC/DC converter |
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