CN104967325A - Winding clamp single tube forward resonant soft-switching DC/DC converter - Google Patents
Winding clamp single tube forward resonant soft-switching DC/DC converter Download PDFInfo
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- CN104967325A CN104967325A CN201510377402.8A CN201510377402A CN104967325A CN 104967325 A CN104967325 A CN 104967325A CN 201510377402 A CN201510377402 A CN 201510377402A CN 104967325 A CN104967325 A CN 104967325A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention relates to a power electronic energy conversion circuit, and provides a winding clamp single tube forward resonant soft-switching DC/DC converter. The converter comprises an isolation transformer, and the primary side is connected with a switch tube. The primary side of the isolation transformer is provided with an input side inductor, a resonant inductor and a resonant capacitor. The input side inductor and a power supply form constant current output. The resonant inductor and the resonant capacitor form a resonant circuit. The switch tube and a primary winding of the isolation transformer form a single tube forward converter. The secondary side of the isolation transformer is provided with an output rectifier filter circuit which is composed of an output rectifier element and an output filter capacitor. According to the invention, a power switch tube works when zero voltage is on and quasi-zero current is off; voltage on both ends of the power switch tube and the overlapping time of current passing the power switch tube are reduced; switching loss of the power switch tube is reduced; the energy conversion efficiency is enhanced; the reliability and the work stability of a circuit are improved; and the service lives of a device and the circuit are improved.
Description
Technical field
The present invention relates to a kind of power electronics transformation of electrical energy circuit, particularly relate to a kind of isolated soft switching single tube normal shock resonance DC/DC circuit.
Background technology
Positive activation type topology because circuit structure is succinct, input and output electrical isolation, voltage up-down wide ranges, be easy to multiple-channel output, be applicable to the features such as middle low power power conversion occasion, and obtain and adopt widely.Single tube normal shock DC/DC converter circuit generally adopts structure as shown in Figure 1 to realize: switching tube S1, play Isolation input export and carry out the transformer T1 of voltage up-down effect, diode D1, sustained diode 2 and the inductance L o strobed and electric capacity Co that Limited Current flows to form.This single tube normal shock DC/DC translation circuit Shortcomings: because power electronic device nonideal switch, exist and open time delay and turn off delay time, thus cause switching tube S1 both end voltage and occur overlapping time by its electric current, cause serious switching loss (electric current and voltage waveform are as shown in Figure 2); And the change of current between secondary two rectifier diodes causes serious reverse recovery loss.The no-voltage that resonance forward converter in Fig. 3 achieves former limit switching tube is opened and accurate zero-current switching, the switching loss of switching tube S1 is minimum, and secondary side diode also realize soft commutation, eliminate reverse recovery loss, the electric current of S1 and voltage waveform are as shown in Figure 4.But, the shortcoming that in Fig. 1 and Fig. 3, topology existence one is common: voltage stress when switching tube turns off is too high, and this is because when it turns off, circuit is caused the principle that transformer resets by resonance manner.
Adopt the former limit reset winding of transformer in Fig. 5, the voltage of switch tube carries out clamp, can effective limit switch pipe S1 voltage stress.But for voltage-dropping type DC/DC, transformer primary side winding is more, in order to the duty ratio that do not have the greatest impact while can limiting former limit stress, therefore the former limit reset winding number of turn and the former limit main winding number of turn similar, cause transformer device structure complicated, especially, when main transformer T1 adopts PCB design winding, the utilance of PCB winding in transformer is declined, affects the raising of efficiency.And if clamp winding is connected to the output of secondary direct current, then the matching problem of the number of turn and major-minor limit umber of turn can be there is, when especially duty ratio is less, causes clamp effect to completely lose.
Although the method for the active-clamp adopted in Fig. 6 improves the utilance of PCB winding in flat surface transformer, can effective clamp switch voltage, be the increase in an auxiliary switch Sa, add cost, drive also complicated.
Clamp approaches in Fig. 5 and Fig. 6 goes for the hard switching PWM single tube forward topology with output inductor in Fig. 1.For the Sofe Switch single tube resonance forward topology in Fig. 3, because its outlet side is without filter inductance Lo, the clamp approaches different from Fig. 1 topology therefore can be adopted.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, provides a kind of winding clamp single tube normal shock resonant type soft-switch DC/DC converter.Adopting this converter circuit can not only reduce switching tube turning on and off moment, being added in the overlapping time of the voltage at switching tube two ends and the electric current by this switching tube, thus reducing the switching loss of switching device, suppressing the generation of voltage or current over pulse simultaneously.
For technical solution problem, solution of the present invention is:
There is provided a kind of winding clamp single tube normal shock resonant type soft-switch DC/DC converter, comprise isolating transformer (T1), its former avris is connected to switching tube (S1); At the former avris of isolating transformer (T1), be provided with input side inductance (Lin), resonant inductance (Lr) and resonant capacitance (Cr); Input side inductance (Lin) and power supply (Vin) form constant current output, and resonant inductance (Lr) and resonant capacitance (Cr) form resonant circuit; Switching tube (S1) forms single tube forward converter with former limit winding (W1) of isolating transformer (T1); In the secondary side of isolating transformer (T1), the output rectifier and filter be made up of output rectifier cell (D1) and output filter capacitor (Co) is set.(Fig. 7,8,9)
In the present invention, described power supply (Vin) positive pole is connected to input side inductance (Lin) input, and input side inductance (Lin) output is connected in resonant capacitance (Cr) one end; The other end of resonant capacitance (Cr) is connected to power supply (Vin) negative pole and forms loop; Input side inductance (L
in) output be also connected to the resonant inductance (Lr) be connected with isolating transformer (T1) former limit winding (W1) Same Name of Ends, isolating transformer (T1) former limit winding (W1) different name end is connected in switching tube (S1) one end, and switching tube (S1) other end is then connected in power supply (Vin) negative pole and forms loop.
In the present invention, the former avris of described isolating transformer (T1) arranges clamp winding (W3), clamp winding (W3) and a clamping diode clamp element network in series (N
eT1), clamp element network (N
eT1) be connected in parallel on input power (Vin) two ends; Clamp winding (W3) is connected to input power (V with different name end
in) anode, or be connected to the negative terminal of input power (Vin) with Same Name of Ends.(Fig. 8)
In the present invention, the former avris of described isolating transformer (T1) arranges clamp winding (W3), clamp winding (W3) and a clamping diode clamp element network in series (N
eT1), clamp element network (N
eT1) be connected in parallel on resonant capacitance (Cr) two ends; Clamp winding (W3) is connected to the anode of resonant capacitance (Cr) with different name end, or is connected to the negative terminal of resonant capacitance (Cr) with Same Name of Ends.(Fig. 9)
In the present invention, the Same Name of Ends of described isolating transformer (T1) secondary first winding (W2) is connected in output rectifier cell (D1) one end, export one end that rectifier cell (D1) other end is connected to output filter capacitor (Co), output filter capacitor (Co) other end is connected in the different name end of high-frequency isolation transformer vice-side winding (W2), forms loop; Load (R
l) be connected in parallel on output filter capacitor (Co) two ends.
In the present invention, described output rectifier cell (D1) is diode, or the MOSFET of synchronous rectification.
In the present invention, described resonant inductance (Lr) is additional independent resonant inductance, or the leakage inductance of isolating transformer (T1).
In the present invention, described isolating transformer (T1) secondary arranges clamp winding (W3), its Same Name of Ends is connected to one end of output filter capacitor (Co), the different name end of clamp winding (W3) is connected to one end that another exports rectifier cell (D2), and the other end of this output rectifier cell (D2) is then connected to the anode of output filter capacitor (Co).
In the present invention, it is diode that described another exports rectifier cell (D2), or the MOSFET of synchronous rectification.
Inventive principle describes:
The invention belongs to a kind of new isolated soft switching single tube normal shock resonance DC/DC circuit, comprise single tube normal shock resonant type soft-switch translation circuit and the output filter circuit direct voltage to input in this circuit to change, do not make to be added in the voltage at power switch pipe two ends by means of only resonant circuit and reduced by the overlapping time of the electric current of power switch pipe, thus reaching the object reducing switching loss; But also by clamp winding, the voltage stress of switching tube can be reduced, simultaneously by the Energy transmission in the magnetizing inductance of transformer to secondary, improve magnetic core utilance and conversion efficiency.
Adopt soft switch technique, resonant inductance (Lr) and resonant capacitance (Cr) is utilized to produce resonance in input stage, make power switch pipe be operated in no-voltage to open and accurate zero-current switching state, reduce the overlapping time of the voltage at power switch pipe two ends and the electric current by power switch pipe, thus reduce the switching loss of power switch pipe.
Compared with prior art, beneficial effect of the present invention comprises:
1, owing to adopting Sofe Switch harmonic technology at input, make power switch pipe be operated in no-voltage to open and accurate zero-current switching state, reduce the overlapping time of the voltage at power switch pipe two ends and the electric current by power switch pipe, reduce the switching loss of power switch pipe.
2, reclaim the energy on stray inductance or electric capacity, promote energy conversion efficiency.
3, reclaim magnetizing inductance energy transferring to output, raise the efficiency.
4, utilize clamp winding to reduce main switch voltage stress, improve reliability.
5, the heat energy reducing device for power switching produces, and improves the job stability of circuit, improves the useful life of device and circuit.
Accompanying drawing explanation
The main circuit topology of Fig. 1 resonant reset single tube forward converter;
The key waveforms of the switch periods switch S 1 of Fig. 2 resonant reset single tube forward converter;
The main circuit topology of Fig. 3 resonant type soft-switch single tube forward converter;
The key waveforms of the switching tube S1 of Fig. 4 resonant type soft-switch single tube forward converter;
The single tube forward converter that Fig. 5 tradition winding resets;
Fig. 6 conventional active clamp forward converter;
Fig. 7 vice-side winding clamp of the present invention resonance single tube forward converter;
Fig. 8 clamp winding is clamped to input direct-current side;
Fig. 9 clamp winding is clamped to input resonant capacitance side;
Figure 10 is the structural representation that rectifier cell D1 and D2 of the present invention is the employing vice-side winding clamp resonance single tube forward converter of diode;
Figure 11 is rectifier cell D1 of the present invention is MOSFET, and rectifier cell D2 is the structural representation of the employing vice-side winding clamp resonance single tube forward converter of diode;
Figure 12 is rectifier cell D1 of the present invention is diode, and rectifier cell D2 is the structural representation of the employing vice-side winding clamp resonance single tube forward converter of MOSFET;
Figure 13 is the structural representation that rectifier cell D1 and D2 of the present invention is the employing vice-side winding clamp resonance single tube forward converter of MOSFET;
Figure 14 is the anode that the different name of clamper winding (W3) of the present invention terminates to input voltage source (Vin), and rectifier cell D1 is the structural representation that the clamp winding of diode is clamped to input direct-current side resonance single tube forward converter;
Figure 15 is the negative terminal that the Same Name of Ends of clamper winding (W3) of the present invention receives input voltage source (Vin), and rectifier cell D1 is the structural representation that the clamp winding of diode is clamped to input direct-current side resonance single tube forward converter;
Figure 16 is the anode that the different name of clamper winding (W3) of the present invention terminates to input voltage source (Vin), and rectifier cell D1 is the structural representation that the clamp winding of MOSFET is clamped to input direct-current side resonance single tube forward converter;
Figure 17 is the negative terminal that the Same Name of Ends of clamper winding (W3) of the present invention receives input voltage source (Vin), and rectifier cell D1 is the structural representation that the clamp winding of MOSFET is clamped to input direct-current side resonance single tube forward converter;
Figure 18 is the junction that the different name of clamper winding (W3) of the present invention terminates to input inductance (Lin) and resonant capacitance (Cr), and rectifier cell D1 is the structural representation that the clamp winding of diode is clamped to input resonant capacitance side resonance single tube forward converter;
Figure 19 is the negative terminal that the Same Name of Ends of clamper winding (W3) of the present invention receives input voltage source (Vin), and rectifier cell D1 is the structural representation that the clamp winding of diode is clamped to input resonant capacitance side resonance single tube forward converter;
Figure 20 is the junction that the different name of clamper winding (W3) of the present invention terminates to input inductance (Lin) and resonant capacitance (Cr), and rectifier cell D1 is the structural representation that the clamp winding of MOSFET is clamped to input resonant capacitance side resonance single tube forward converter;
Figure 21 is the negative terminal that the Same Name of Ends of clamper winding (W3) of the present invention receives input voltage source (Vin), and rectifier cell D1 is the structural representation that the clamp winding of MOSFET is clamped to input resonant capacitance side resonance single tube forward converter.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Embodiment 1: a kind of vice-side winding clamp resonance single tube forward converter, rectifier cell D1 and D2 can be diode, also can be the MOSFET (synchronous rectification) of alternative diode, its circuit structure be respectively as shown in Figure 10, Figure 11, Figure 12 and Figure 13.
Concrete connected mode is: one end just terminating to input inductance (Lin) of input voltage source (Vin); Resonant capacitance (Cr) is connected across the negative terminal of input voltage and the other end of inductance (Lin); Resonant inductance (Lr) and transformer primary side winding (W1) are connected in same branch road, the Same Name of Ends on isolating transformer (T1) former limit winding (W1) receives one end of resonant inductance (Lr), and the other end of resonant inductance (Lr) receives the junction of input inductance (Lin) and resonant capacitance (Cr); Former limit winding (W1) non-same polarity receives one end of switching tube (S1); The other end of switching tube (S1) receives the negative terminal of input voltage source (Vin); As shown in Figure 10, isolating transformer (T1) secondary first winding (W2) Same Name of Ends is connected in the anode of rectifier diode (D1), and the negative electrode of rectifier diode (D1) receives the anode of output filter capacitor (Co); The negative terminal of output filter capacitor (Co) receives the junction of secondary first winding (W2) different name end and secondary second winding (W3) Same Name of Ends; Secondary second winding (W3) different name terminates to the anode of rectifier diode (D2), and the negative electrode of rectifier diode (D2) links the anode of output filter capacitor (Co); Load (R
l) in parallel with output filter capacitor (Co).
As shown in figure 11, rectifier diode (D1) MOSFET substitutes, and all the other are identical with Figure 10.
As shown in figure 12, rectifier diode (D2) MOSFET substitutes, and all the other are identical with Figure 10.
As shown in figure 13, rectifier diode (D1) and rectifier diode (D2) all substitute with MOSFET, and all the other are identical with Figure 10.
Embodiment 2: a kind of clamp winding is clamped to input direct-current side resonance single tube forward converter, rectifier cell D1 can be diode, also can be the MOSFET (synchronous rectification) of alternative diode, its circuit structure be respectively as shown in Figure 14, Figure 15, Figure 16 and Figure 17.
Concrete connected mode is: one end just terminating to input inductance (Lin) of input voltage source (Vin); Resonant capacitance (Cr) is connected across the negative terminal of input voltage and the other end of inductance (Lin); Resonant inductance (Lr) and transformer primary side winding (W1) are connected in same branch road, the Same Name of Ends on isolating transformer (T1) former limit winding (W1) receives one end of resonant inductance (Lr), and the other end of resonant inductance (Lr) receives the junction of input inductance (Lin) and resonant capacitance (Cr); Former limit winding (W1) non-same polarity receives one end of switching tube (S1); The other end of switching tube (S1) receives the negative terminal of input voltage source (Vin); As shown in figure 14, isolating transformer (T1) secondary first winding (W2) Same Name of Ends is connected in the anode of rectifier diode (D1), and the negative electrode of rectifier diode (D1) receives the anode of output filter capacitor (Co); The negative terminal of output filter capacitor (Co) receives secondary first winding (W2) different name end; Load (R
l) in parallel with output filter capacitor (Co); Clamp winding (W3) and the clamping diode clamp element network N in series of isolating transformer (T1)
eT1, the different name of clamper winding (W3) terminates to the anode of input voltage source (Vin); The Same Name of Ends of clamper winding (W3) receives the negative electrode of clamp diode (Dc), and the anode of clamp diode (Dc) receives the negative terminal of input voltage source (Vin).
As shown in figure 15, the clamp winding (W of isolating transformer (T1)
3) and clamping diode clamp element network N in series
eT1, the different name of clamper winding (W3) terminates to the anode of clamp diode (Dc), and the negative electrode of clamp diode (Dc) receives the anode of input voltage source (Vin); The Same Name of Ends of clamper winding (W3) receives input voltage source (Vin) negative terminal, and rectifier cell D1 adopts diode, and all the other are identical with Figure 14.
As shown in figure 16, clamp winding (W3) and the clamping diode clamp element network N in series of isolating transformer (T1)
eT1, the Same Name of Ends of clamper winding (W3) receives the negative electrode of clamp diode (Dc), and the anode of clamp diode (Dc) receives the negative terminal of input voltage source (Vin); The different name of clamper winding (W3) terminates to input voltage source (Vin) anode, and rectifier cell D1 adopts the MOSFET replacing diode, and all the other are identical with Figure 14.
As shown in figure 17, clamp winding (W3) and the clamping diode clamp element network N in series of isolating transformer (T1)
eT1, the different name of clamper winding (W3) terminates to the anode of clamp diode (Dc), and the negative electrode of clamp diode (Dc) receives the anode of input voltage source (Vin); The Same Name of Ends of clamper winding (W3) receives input voltage source (Vin) negative terminal, and rectifier cell D1 adopts the MOSFET replacing diode, and all the other are identical with Figure 14.
Embodiment 3: a kind of clamp winding is clamped to input resonant capacitance side resonance single tube forward converter, rectifier cell D1 can be diode, also can be the MOSFET (synchronous rectification) of alternative diode, its circuit structure be respectively as shown in Figure 18, Figure 19, Figure 20 and Figure 21.
Concrete connected mode is: one end just terminating to input inductance (Lin) of input voltage source (Vin); Resonant capacitance (Cr) is connected across the negative terminal of input voltage and the other end of inductance (Lin); Resonant inductance (Lr) and transformer primary side winding (W1) are connected in same branch road, the Same Name of Ends on isolating transformer (T1) former limit winding (W1) receives one end of resonant inductance (Lr), and the other end of resonant inductance (Lr) receives the junction of input inductance (Lin) and resonant capacitance (Cr); Former limit winding (W1) non-same polarity receives one end of switching tube (S1); The other end of switching tube (S1) receives the negative terminal of input voltage source (Vin); As shown in figure 18, isolating transformer (T1) secondary first winding (W2) Same Name of Ends is connected in the anode of rectifier diode (D1), and the negative electrode of rectifier diode (D1) receives the anode of output filter capacitor (Co); The negative terminal of output filter capacitor (Co) receives secondary first winding (W2) different name end; Load (R
l) in parallel with output filter capacitor (Co); Clamp winding (W3) and the clamping diode clamp element network N in series of isolating transformer (T1)
eT1, the different name of clamper winding (W3) terminates to the junction of input inductance (Lin) and resonant capacitance (Cr); The Same Name of Ends of clamper winding (W3) receives the negative electrode of clamp diode (Dc), and the anode of clamp diode (Dc) receives the negative terminal of input voltage source (Vin).
As shown in figure 19, clamp winding (W3) and the clamping diode clamp element network N in series of isolating transformer (T1)
eT1, the different name of clamper winding (W3) terminates to the anode of clamp diode (Dc), and the negative electrode of clamp diode (Dc) receives the junction of input inductance (Lin) and resonant capacitance (Cr); The Same Name of Ends of clamper winding (W3) receives input voltage source (Vin) negative terminal, and rectifier cell D1 adopts diode, and all the other are identical with Figure 18.
As shown in figure 20, clamp winding (W3) and the clamping diode clamp element network N in series of isolating transformer (T1)
eT1, the different name of clamper winding (W3) terminates to the junction of input inductance (Lin) and resonant capacitance (Cr); The Same Name of Ends of clamper winding (W3) receives the negative electrode of clamp diode (Dc), the anode of clamp diode (Dc) receives the negative terminal of input voltage source (Vin), rectifier cell D1 adopts the MOSFET replacing diode, and all the other are identical with Figure 18.
As shown in figure 21, clamp winding (W3) and the clamping diode clamp element network N in series of isolating transformer (T1)
eT1, the different name of clamper winding (W3) terminates to the anode of clamp diode (Dc), and the negative electrode of clamp diode (Dc) receives the junction of input inductance (Lin) and resonant capacitance (Cr); The Same Name of Ends of clamper winding (W3) receives input voltage source (Vin) negative terminal, and rectifier cell D1 adopts the MOSFET replacing diode, and all the other are identical with Figure 18.
Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (9)
1. a winding clamp single tube normal shock resonant type soft-switch DC/DC converter, comprises isolating transformer (T1), and its former avris is connected to switching tube (S1); It is characterized in that, at isolating transformer (T
1) former avris, be provided with input side inductance (L
in), resonant inductance (L
r) and resonant capacitance (C
r); Input side inductance (L
in) and power supply (V
in) composition constant current output, resonant inductance (L
r) and resonant capacitance (C
r) composition resonant circuit; Switching tube (S1) forms single tube forward converter with former limit winding (W1) of isolating transformer (T1); In the secondary side of isolating transformer (T1), arrange by output rectifier cell (D
1) and output filter capacitor (C
o) output rectifier and filter that forms.
2. converter according to claim 1, is characterized in that, described power supply (V
in) positive pole is connected to input side inductance (L
in) input, input side inductance (L
in) output is connected in resonant capacitance (C
r) one end; Resonant capacitance (C
r) the other end be connected to power supply (V
in) negative pole formation loop; Input side inductance (L
in) output be also connected to the resonant inductance (L be connected with isolating transformer (T1) former limit winding (W1) Same Name of Ends
r), isolating transformer (T1) former limit winding (W1) different name end is connected in switching tube (S1) one end, and switching tube (S1) other end is then connected in power supply (V
in) negative pole formation loop.
3. converter according to claim 1, it is characterized in that, the former avris of described isolating transformer (T1) establishes clamp winding (W3), clamp winding (W3) and a clamping diode clamp element network in series (N
eT1), clamp element network (N
eT1) be connected in parallel on input power (V
in) two ends; Clamp winding (W3) is connected to input power (V with different name end
in) anode, or be connected to input power (V with Same Name of Ends
in) negative terminal.
4. converter according to claim 1, is characterized in that, described isolating transformer (T
1) former avris establish clamp winding (W3), clamp winding (W
3) and a clamping diode clamp element network in series (N
eT1), clamp element network (N
eT1) be connected in parallel on resonant capacitance (C
r) two ends; Clamp winding (W
3) be connected to resonant capacitance (C with different name end
r) anode, or be connected to resonant capacitance (C with Same Name of Ends
r) negative terminal.
5. according to the converter described in Claims 1-4 any one, it is characterized in that, the Same Name of Ends of described isolating transformer (T1) secondary first winding (W2) is connected in output rectifier cell (D1) one end, exports rectifier cell (D
1) other end is connected to output filter capacitor (C
o) one end, output filter capacitor (C
o) other end is connected in isolating transformer vice-side winding (W
2) different name end, form loop; Load (R
l) be connected in parallel on output filter capacitor (C
o) two ends.
6. converter according to claim 5, is characterized in that, described output rectifier cell (D
1) be diode, or the MOSFET of synchronous rectification.
7. converter according to claim 5, is characterized in that, described resonant inductance (L
r) be additional independent resonant inductance, or the leakage inductance of isolating transformer (T1).
8. converter according to claim 5, is characterized in that, described isolating transformer (T1) secondary establishes clamp winding (W3), and its Same Name of Ends is connected to output filter capacitor (C
o) one end, the different name end of clamp winding (W3) is connected to one end that another exports rectifier cell (D2), and the other end of this output rectifier cell (D2) is then connected to output filter capacitor (C
o) anode.
9. converter according to claim 8, is characterized in that, it is diode that described another exports rectifier cell (D2), or the MOSFET of synchronous rectification.
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| CN201510377402.8A CN104967325A (en) | 2015-06-29 | 2015-06-29 | Winding clamp single tube forward resonant soft-switching DC/DC converter |
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| CN201510377402.8A CN104967325A (en) | 2015-06-29 | 2015-06-29 | Winding clamp single tube forward resonant soft-switching DC/DC converter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571743A (en) * | 2016-09-13 | 2017-04-19 | 南昌大学 | Two-transistor forward switching power supply circuit |
| CN108923635A (en) * | 2018-07-11 | 2018-11-30 | 佛山市众盈电子有限公司 | A kind of dual single- stage PFC soft switch conversion system |
| CN109842310A (en) * | 2019-02-28 | 2019-06-04 | 全球能源互联网研究院有限公司 | A kind of inverter |
| CN118137849A (en) * | 2024-03-05 | 2024-06-04 | 南京航空航天大学 | Low-voltage stress bilateral compensation single-tube resonant converter based on pole allocation and design method |
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| CN1379534A (en) * | 2002-01-01 | 2002-11-13 | 艾默生网络能源有限公司 | Synchronous rectifying drive circuit and method of DC/DC converter |
| CN202818103U (en) * | 2012-09-21 | 2013-03-20 | 纽福克斯光电科技（上海）有限公司 | Single tube fly-back quasi-resonance switch power supply |
| CN103312171A (en) * | 2013-06-15 | 2013-09-18 | 浙江大学 | Isolated soft switching two-diode forward resonant DC / DC (direct-current/direct-current) circuit |
| CN103887976A (en) * | 2014-03-25 | 2014-06-25 | 浙江大学 | Current source input type resonance soft switching DC/DC converter |
| CN204046411U (en) * | 2014-09-10 | 2014-12-24 | 广州优联电气科技有限公司 | Be applicable to single normal shock absorbing circuit of middle low power modular power source |
| CN104218813A (en) * | 2014-09-26 | 2014-12-17 | 浙江大学 | Cascaded resonance DC-DC conversion circuit combined with inductor and capacitor |
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| CN106571743A (en) * | 2016-09-13 | 2017-04-19 | 南昌大学 | Two-transistor forward switching power supply circuit |
| CN106571743B (en) * | 2016-09-13 | 2023-07-28 | 南昌大学 | Double-tube forward switch power supply circuit |
| CN108923635A (en) * | 2018-07-11 | 2018-11-30 | 佛山市众盈电子有限公司 | A kind of dual single- stage PFC soft switch conversion system |
| CN109842310A (en) * | 2019-02-28 | 2019-06-04 | 全球能源互联网研究院有限公司 | A kind of inverter |
| CN118137849A (en) * | 2024-03-05 | 2024-06-04 | 南京航空航天大学 | Low-voltage stress bilateral compensation single-tube resonant converter based on pole allocation and design method |
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