CN202652074U - DC/DC converter based on LLC resonance - Google Patents
DC/DC converter based on LLC resonance Download PDFInfo
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- CN202652074U CN202652074U CN 201220241907 CN201220241907U CN202652074U CN 202652074 U CN202652074 U CN 202652074U CN 201220241907 CN201220241907 CN 201220241907 CN 201220241907 U CN201220241907 U CN 201220241907U CN 202652074 U CN202652074 U CN 202652074U
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Abstract
A DC/DC converter based on LLC resonance comprises a switch circuit, a resonance circuit, a transformer and a rectification circuit which are sequentially and electrically connected. The DC/DC converter based on the LLC resonance further comprises a voltage stabilizing circuit used for providing a stable input voltage for the switch circuit. Through adding the voltage stabilizing circuit used for providing the stable input voltage for the switch circuit, the DC/DC converter based on the LLC resonance can make the resonance circuit work around resonance frequency points, so that the work efficiency of the DC/DC converter based on the LLC resonance is improved.
Description
Technical field
The utility model relates to the DC/DC converter, is specifically related to a kind of DC/DC converter based on LLC resonance that is applied on the electric automobile.
Background technology
The vehicle-mounted energy-storage battery bag of electric automobile voltage is higher, and vehicle electronic device generally is low-voltage power supply, common are 12V and 24V etc., is low tension so need a DC/DC converter with the power conversion of energy-storage battery bag, supply with low-voltage equipment, guarantee that vehicle normally moves.
The most frequently used topological structure of the vehicle-mounted DC/DC converter of electric automobile is the LLC resonance topological at present, yet, because the wider product resonant circuit change in gain that causes of power brick scope range of the fluctuation of voltage is larger, thereby affected the operating efficiency of DC/DC converter.
The utility model content
The utility model provides a kind of DC/DC converter based on LLC resonance for solving the existing above-mentioned technical problem that exists based on the DC/DC converter of LLC resonance.
The technical solution of the utility model is:
A kind of DC/DC converter based on LLC resonance is applied on the electric automobile, comprises the switching circuit, resonant circuit, transformer and the rectification circuit that are electrically connected successively, wherein, also comprises to switching circuit providing the voltage stabilizing circuit of stablizing input voltage.
Further, described voltage stabilizing circuit is voltage boosting and stabilizing circuit.
Further, described voltage boosting and stabilizing circuit comprises the first inductance, the first diode, the first switch and the first electric capacity, the first end of described the first inductance links to each other with positive source, the second end of the first inductance respectively with the anode of the first diode, the first switch first extremely continuous, the negative electrode of the first diode links to each other with the first end of the first electric capacity, second of the second end of the first electric capacity and the first switch extremely all links to each other with power cathode, the 3rd utmost point of the first switch is used for receiving the first control signal, second utmost point of the negative electrode of described the first diode and the first switch also links to each other with switching circuit, and being used for provides stable input voltage to switching circuit.
Further, described voltage stabilizing circuit is decompression voltage regulator.
Further, described decompression voltage regulator comprises the second inductance, the second diode, second switch and the second electric capacity, first utmost point of described second switch links to each other with positive source, second utmost point of second switch respectively with the first end of the second inductance, the negative electrode of the second diode links to each other, the second end of the second inductance links to each other with the first end of the second electric capacity, the second end of the anode of the second diode and the second electric capacity all links to each other with power cathode, the 3rd utmost point of second switch is used for receiving the second control signal, the second end of described the second inductance also links to each other with switching circuit with the anode of the second diode, and being used for provides stable input voltage to switching circuit.
Further, described voltage stabilizing circuit is the buck voltage stabilizing circuit.
Further, described buck voltage stabilizing circuit comprises the 3rd inductance, the 3rd diode, the 3rd switch and the 3rd electric capacity, first utmost point of described the 3rd switch links to each other with positive source, second utmost point of the 3rd switch respectively with the negative electrode of the 3rd diode, the first end of the 3rd inductance links to each other, the anode of the 3rd diode links to each other with the first end of the 3rd electric capacity, the second end of the 3rd inductance all links to each other with power cathode with the second end of the second electric capacity, the 3rd utmost point of the 3rd switch is used for receiving the 3rd control signal, the second end of the anode of described the 3rd diode and the 3rd inductance also links to each other with switching circuit, and being used for provides stable input voltage to switching circuit.
Further, described switching circuit comprises the 4th switch and the 5th switch, first utmost point of described the 4th switch links to each other with the positive pole of input voltage, second utmost point of the 4th switch extremely links to each other with first of the 5th switch, second utmost point of the 5th switch links to each other with the negative pole of input voltage, the 3rd utmost point of the 4th switch is used for receiving the 4th control signal, and the 3rd utmost point of the 5th switch is used for receiving the 5th control signal, and first utmost point, second utmost point of the 5th switch also link to each other with resonant circuit.
Further, described switching circuit comprises the 6th switch, minion is closed, the 8th switch and the 9th switch, first of first utmost point of described the 6th switch and the 8th switch extremely all links to each other with the positive pole of input voltage, second utmost point of the 6th switch extremely links to each other with first of minion pass, second utmost point of the 8th switch extremely links to each other with first of the 9th switch, second of second utmost point that minion is closed and the 9th switch extremely all links to each other with the negative pole of input voltage, the 3rd utmost point of the 6th switch is used for receiving the 6th control signal, the 3rd utmost point that minion is closed is used for receiving the 7th control signal, the 3rd utmost point of the 8th switch is used for receiving the 8th control signal, the 3rd utmost point of the 9th switch is used for receiving the 9th control signal, first utmost point that described minion is closed, first utmost point of the 9th switch also links to each other with resonant circuit.
Advantage of the present utility model: the DC/DC converter based on LLC resonance that the utility model provides, provide the voltage stabilizing circuit of stablizing input voltage by increasing by one to switching circuit, so that resonant circuit can be operated near the resonant frequency point, thereby improved operating efficiency based on the DC/DC converter of LLC resonance.
Description of drawings
The existing circuit block diagram that provides based on the DC/DC converter of LLC resonance is provided Fig. 1.
The circuit block diagram that Fig. 2 provides based on the DC/DC converter of LLC resonance for the utility model.
The circuit diagram of the voltage boosting and stabilizing circuit that Fig. 3 provides for the utility model one embodiment.
The circuit diagram of the decompression voltage regulator that Fig. 4 provides for the utility model one embodiment.
The circuit diagram of the buck voltage stabilizing circuit that Fig. 5 provides for the utility model one embodiment.
The circuit diagram of the switching circuit that Fig. 6 provides for the utility model one embodiment.
The circuit diagram of the switching circuit of the full-bridge type topology that Fig. 7 provides for the utility model one embodiment.
The circuit diagram of the embodiment that Fig. 8 provides based on the DC/DC converter of LLC resonance for the utility model.
Fig. 9 is the resonant circuit of Fig. 8 and the reduced graph of transformer.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The existing vehicle-mounted DC/DC converter based on LLC resonance of electric automobile as shown in Figure 1, comprises switching circuit 2, resonant circuit 3, transformer 4 and rectification circuit 5, and wherein, switching circuit 2 is used for power input voltage is carried out break-make control; Resonant circuit 3 for the input voltage of receiving key circuit 2, produces resonance, forms to exchange resonance potential output; Transformer 4, the interchange resonance potential that is used for inputting is carried out conversion, exports rectification circuit 5 to; Rectification circuit 5 is used for the interchange resonance potential of transformer 4 outputs is carried out exporting load to after the rectification.
The inventor finds through research, at present for the DC/DC converter based on LLC resonance that is used on the electric automobile, because the power brick scope range of the fluctuation of voltage is wider, cause product resonant circuit change in gain larger, so that the too much off-resonance frequency of system works frequency, thereby affected the operating efficiency of DC/DC converter.
In order to solve this technical problem, the inventor proposes the higher DC/DC converter based on LLC resonance of a kind of operating efficiency by the creative work of oneself.As shown in Figure 2, this embodiment comprises voltage stabilizing circuit 1, switching circuit 2, resonant circuit 3, transformer 4 and the rectification circuit 5 that is electrically connected successively, and wherein, voltage stabilizing circuit 1 is used for supply voltage is converted to stable input voltage, and offers switching circuit 2.This embodiment passes through at basis increase by one voltage stabilizing circuit 1 that has now based on the DC/DC converter of LLC resonance, resonant circuit 3 input voltages are owing to voltage stabilizing circuit 1 is stablized, resonant circuit 3 output voltages are owing to connect low-voltage load, 12V for example, therefore output voltage is also stable, thereby so that the input voltage of resonant circuit 3 becomes the certainty ratio relation with output voltage, can be so that resonant circuit 3 can be operated in the resonant frequency point annex, thus operating efficiency based on the DC/DC converter of LLC resonance improved.
In the implementation, described voltage stabilizing circuit can be voltage boosting and stabilizing circuit, decompression voltage regulator or buck voltage stabilizing circuit, and these three kinds of circuit can specifically be selected according to concrete needs by the designer.Preferably, can select according to power input voltage scope (being on-vehicle battery bag voltage range) and the output voltage of voltage regulation (being the stable input voltage of switching circuit) of voltage stabilizing circuit, concrete grammar is as follows: when the power input voltage gamut is higher than the output voltage of voltage regulation, be fit to adopt decompression voltage regulator; When the power input voltage gamut is lower than the output voltage of voltage regulation, be fit to adopt voltage boosting and stabilizing circuit; When the output voltage of voltage regulation is positioned at the power input voltage scope, be fit to adopt step-up/step-down circuit.All provide a kind of physical circuit below in conjunction with accompanying drawing to the circuit of above three types.
As shown in Figure 3, voltage boosting and stabilizing circuit comprises the first inductance L 1, the first diode D1, the first switch Q1 and the first capacitor C 1, the first end of described the first inductance L 1 links to each other with power supply Vin is anodal, the second end of the first inductance L 1 respectively with the anode of the first diode D1, the first switch Q1's is first extremely continuous, the negative electrode of the first diode D1 links to each other with the first end of the first capacitor C 1, second of the second end of the first capacitor C 1 and the first switch Q1 extremely all links to each other with power supply Vin negative pole, the 3rd utmost point of the first switch Q1 is used for receiving the first control signal, the negative electrode of described the first diode D1 also links to each other with switching circuit with second utmost point of the first switch Q1, and being used for provides stable input voltage to switching circuit.Wherein, this voltage boosting and stabilizing circuit operation principle is as follows:
When the first switch Q1 opened, inductance L 1 storage power namely produced voltage U at inductance L 1 two ends.When the first switch Q1 turn-offed, inductance L 1 both end voltage was superimposed upon on the supply voltage Vin, charged to the first capacitor C 1 by diode D1 together, so that the first capacitor C 1 both end voltage reaches Vin+U, thereby reached the purpose of boosting.Because there is certain fluctuation range in supply voltage, therefore recently control the time that turns on and off of the first switch Q1 to the duty of the 3rd utmost point PWM ripple of the first switch Q1 by control, thereby realize inductance L 1 two ends are produced the size control of voltage U, namely reach the constant purpose of the first capacitor C 1 both end voltage.
It should be noted that at this first switch Q1 among Fig. 3 is the N-channel MOS pipe.In addition, be understandable that shown in Figure 3 only is a kind of physical circuit of voltage boosting and stabilizing circuit, in the implementation, voltage boosting and stabilizing circuit can also be arbitrary circuit with the pressure stabilization function that boosts, and does not do one by one at this and introduces.
As shown in Figure 4, decompression voltage regulator comprises the second inductance L 2, the second diode D2, second switch Q2 and the second capacitor C 2, first utmost point of described second switch Q2 links to each other with power supply Vin is anodal, second utmost point of second switch Q2 respectively with the first end of the second inductance L 2, the negative electrode of the second diode D2 links to each other, the second end of the second inductance L 2 links to each other with the first end of the second capacitor C 2, the second end of the anode of the second diode D2 and the second capacitor C 2 all links to each other with power supply Vin negative pole, the 3rd utmost point of second switch Q2 is used for receiving the second control signal, the second end of described the second inductance L 2 also links to each other with switching circuit with the anode of the second diode D2, and being used for provides stable input voltage to switching circuit.
It should be noted that at this second switch Q2 among Fig. 4 is the metal-oxide-semiconductor of N raceway groove.In addition, be understandable that shown in Figure 4 only is a kind of physical circuit of decompression voltage regulator, in the implementation, decompression voltage regulator can also be arbitrary circuit with lowering and stabilizing blood pressure effect, does not do one by one at this and introduces.
As shown in Figure 5, the buck voltage stabilizing circuit comprises the 3rd inductance L 3, the 3rd diode D3, the 3rd switch Q3 and the 3rd capacitor C 3, first utmost point of described the 3rd switch Q3 links to each other with power supply Vin is anodal, second utmost point of the 3rd switch Q3 respectively with the negative electrode of the 3rd diode D3, the first end of the 3rd inductance L 3 links to each other, the anode of the 3rd diode D3 links to each other with the first end of the 3rd capacitor C 3, the second end of the second end of the 3rd inductance L 3 and the second capacitor C 3 all links to each other with power supply Vin negative pole, the 3rd utmost point of the 3rd switch Q3 is used for receiving the 3rd control signal, the anode of described the 3rd diode D3 also links to each other with switching circuit with the second end of the 3rd inductance L 3, and being used for provides stable input voltage to switching circuit.
It should be noted that at this 3rd switch Q3 among Fig. 5 is the metal-oxide-semiconductor of N raceway groove.In addition, be understandable that shown in Figure 5 only is a kind of physical circuit of buck voltage stabilizing circuit, in the implementation, the buck voltage stabilizing circuit can also be arbitrary circuit with buck pressure stabilization function, does not do one by one at this and introduces.
In the implementation, described switching circuit can adopt semibridge system topology or full-bridge type topology.
As shown in Figure 6, the switching circuit of semibridge system topology comprises the 4th switch Q4 and the 5th switch Q5, first utmost point of described the 4th switch Q4 links to each other with the anodal IN+ of input voltage, second utmost point of the 4th switch Q4 extremely links to each other with first of the 5th switch Q5, second utmost point of the 5th switch Q5 links to each other with the negative pole IN-of input voltage, the 3rd utmost point of the 4th switch Q4 is used for receiving the 4th control signal, the 3rd utmost point of the 5th switch Q5 is used for receiving the 5th control signal, and first utmost point, second utmost point of the 5th switch Q5 also link to each other with resonant circuit.
As shown in Figure 7, the switching circuit of full-bridge type topology comprises the 6th switch Q6, minion is closed Q7, the 8th switch Q8 and the 9th switch Q9, first of first utmost point of described the 6th switch Q6 and the 8th switch Q8 extremely all links to each other with the anodal IN+ of input voltage, second utmost point of the 6th switch Q6 closes first of Q7 with minion and extremely links to each other, second utmost point of the 8th switch Q8 extremely links to each other with first of the 9th switch Q9, second of second utmost point of minion pass Q7 and the 9th switch Q9 extremely all links to each other with the negative pole IN-of input voltage, the 3rd utmost point of the 6th switch Q6 is used for receiving the 6th control signal, the 3rd utmost point that minion is closed Q7 is used for receiving the 7th control signal, the 3rd utmost point of the 8th switch Q8 is used for receiving the 8th control signal, the 3rd utmost point of the 9th switch Q9 is used for receiving the 9th control signal, and described minion is closed first utmost point of Q7, first utmost point of the 9th switch Q9 also links to each other with resonant circuit.
It should be noted that at this what above-mentioned switch Q1-Q9 all selected is the metal-oxide-semiconductor of N raceway groove, in the implementation, switch Q1-Q9 can also manage for IGBT, is understandable that, when switch Q1-Q9 is the metal-oxide-semiconductor of N raceway groove, the first very drain electrode, the second source electrode very, the 3rd grid very; When switch Q1-Q9 is IGBT when pipe, the first collector electrode very, the second emitter very, the 3rd gate pole very.In addition, the control signal that the 3rd utmost point of above switch Q1-Q9 receives is the conducting of control switch or closes, and this control signal can be PWM ripple signal, because this is the prior art of this area, is not described in detail in the utility model at this.
In order to allow those skilled in the art understand better and to realize the utility model, below by the mode of specific embodiment the utility model is described in detail.
As shown in Figure 8, DC/DC converter based on LLC resonance comprises voltage stabilizing circuit, switching circuit, resonant circuit, transformer and the rectification circuit that is electrically connected successively, wherein, voltage stabilizing circuit comprises the first inductance L 1, the first diode D1, the first switch Q1 and the first capacitor C 1; Switching circuit comprises the 6th switch Q6, minion pass Q7, the 8th switch Q8 and the 9th switch Q9; Resonant circuit comprises the 4th inductance L 4, the 4th capacitor C 4 and the 5th inductance L 5; Transformer comprises former limit winding N1 and secondary winding N2; Rectification circuit comprises the 4th diode D4, the 5th diode D5, the 6th diode D6 and the 7th diode D7.
Wherein, the first end of the first inductance L 1 links to each other with power supply Vin is anodal, the second end of the first inductance L 1 respectively with the anode of the first diode D1, the first switch Q1's is first extremely continuous, the negative electrode of the first diode D1 links to each other with the first end of the first capacitor C 1, second of the second end of the first capacitor C 1 and the first switch Q1 extremely all links to each other with power supply Vin negative pole, the 3rd utmost point of the first switch Q1 is used for receiving the first control signal, the negative electrode of described the first diode D1 respectively with first utmost point of the 6th switch Q6, the 8th switch Q8's is first extremely continuous, second utmost point of the first switch Q1 closes respectively second utmost point of Q7 with minion, the 9th switch Q9's is second extremely continuous, second utmost point of the 6th switch Q6 closes first of Q7 with minion and extremely links to each other, second utmost point of the 8th switch Q8 extremely links to each other with first of the 9th switch Q9, the 3rd utmost point of the 6th switch Q6 is used for receiving the 6th control signal, the 3rd utmost point that minion is closed Q7 is used for receiving the 7th control signal, the 3rd utmost point of the 8th switch Q8 is used for receiving the 8th control signal, the 3rd utmost point of the 9th switch Q9 is used for receiving the 9th control signal, first utmost point that described minion is closed Q7 also links to each other with the first end of the 4th capacitor C 4, first utmost point of the 9th switch Q9 also links to each other with the first end of the 4th inductance L 4, the second end of the 4th inductance L 4 respectively with the first end of the 5th inductance L 5, the first end of transformer primary side winding N1 links to each other, the second end of the second end of the 5th inductance L 5 and transformer primary side winding N1 all links to each other with the second end of the 4th capacitor C 4, the first end of transformer secondary winding N2 respectively with the anode of the 4th diode D4, the negative electrode of the 5th diode D5 links to each other, the second end of transformer secondary winding N2 respectively with the anode of the 6th diode D6, the negative electrode of the 7th diode D7 links to each other, the negative electrode of the negative electrode of the 4th diode D4 and the 6th diode D6 all links to each other with the first end of load R, and the anode of the anode of the 5th diode D5 and the 7th diode D7 all links to each other with the second end of load R.In implementation, load R two ends also can and meet the 5th electric capacity D5, are used for the electric current of output is carried out filter action.
It should be noted that at this 5th inductance L 5 of above-mentioned resonant circuit can unite two into one with transformer primary side winding N1, namely omits the 5th inductance L 5, therefore, resonant circuit and transformer are reduced to as shown in Figure 9.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. the DC/DC converter based on LLC resonance is applied on the electric automobile, comprises the switching circuit, resonant circuit, transformer and the rectification circuit that are electrically connected successively, it is characterized in that, also comprises to switching circuit providing the voltage stabilizing circuit of stablizing input voltage.
2. the DC/DC converter based on LLC resonance according to claim 1 is characterized in that, described voltage stabilizing circuit is voltage boosting and stabilizing circuit.
3. the DC/DC converter based on LLC resonance according to claim 2, it is characterized in that, described voltage boosting and stabilizing circuit comprises the first inductance, the first diode, the first switch and the first electric capacity, the first end of described the first inductance links to each other with positive source, the second end of the first inductance respectively with the anode of the first diode, the first switch first extremely continuous, the negative electrode of the first diode links to each other with the first end of the first electric capacity, second of the second end of the first electric capacity and the first switch extremely all links to each other with power cathode, the 3rd utmost point of the first switch is used for receiving the first control signal, second utmost point of the negative electrode of described the first diode and the first switch also links to each other with switching circuit, and being used for provides stable input voltage to switching circuit.
4. the DC/DC converter based on LLC resonance according to claim 1 is characterized in that, described voltage stabilizing circuit is decompression voltage regulator.
5. the DC/DC converter based on LLC resonance according to claim 4, it is characterized in that, described decompression voltage regulator comprises the second inductance, the second diode, second switch and the second electric capacity, first utmost point of described second switch links to each other with positive source, second utmost point of second switch respectively with the first end of the second inductance, the negative electrode of the second diode links to each other, the second end of the second inductance links to each other with the first end of the second electric capacity, the second end of the anode of the second diode and the second electric capacity all links to each other with power cathode, the 3rd utmost point of second switch is used for receiving the second control signal, the second end of described the second inductance also links to each other with switching circuit with the anode of the second diode, and being used for provides stable input voltage to switching circuit.
6. the DC/DC converter based on LLC resonance according to claim 1 is characterized in that, described voltage stabilizing circuit is the buck voltage stabilizing circuit.
7. the DC/DC converter based on LLC resonance according to claim 6, it is characterized in that, described buck voltage stabilizing circuit comprises the 3rd inductance, the 3rd diode, the 3rd switch and the 3rd electric capacity, first utmost point of described the 3rd switch links to each other with positive source, second utmost point of the 3rd switch respectively with the negative electrode of the 3rd diode, the first end of the 3rd inductance links to each other, the anode of the 3rd diode links to each other with the first end of the 3rd electric capacity, the second end of the 3rd inductance all links to each other with power cathode with the second end of the second electric capacity, the 3rd utmost point of the 3rd switch is used for receiving the 3rd control signal, the second end of the anode of described the 3rd diode and the 3rd inductance also links to each other with switching circuit, and being used for provides stable input voltage to switching circuit.
8. according to claim 1 to 7 each described DC/DC converters based on LLC resonance, it is characterized in that, described switching circuit comprises the 4th switch and the 5th switch, first utmost point of described the 4th switch links to each other with the positive pole of input voltage, second utmost point of the 4th switch extremely links to each other with first of the 5th switch, second utmost point of the 5th switch links to each other with the negative pole of input voltage, the 3rd utmost point of the 4th switch is used for receiving the 4th control signal, the 3rd utmost point of the 5th switch is used for receiving the 5th control signal, and first utmost point, second utmost point of the 5th switch also link to each other with resonant circuit.
9. according to claim 1 to 7 each described DC/DC converters based on LLC resonance, it is characterized in that, described switching circuit comprises the 6th switch, minion is closed, the 8th switch and the 9th switch, first of first utmost point of described the 6th switch and the 8th switch extremely all links to each other with the positive pole of input voltage, second utmost point of the 6th switch extremely links to each other with first of minion pass, second utmost point of the 8th switch extremely links to each other with first of the 9th switch, second of second utmost point that minion is closed and the 9th switch extremely all links to each other with the negative pole of input voltage, the 3rd utmost point of the 6th switch is used for receiving the 6th control signal, the 3rd utmost point that minion is closed is used for receiving the 7th control signal, the 3rd utmost point of the 8th switch is used for receiving the 8th control signal, the 3rd utmost point of the 9th switch is used for receiving the 9th control signal, first utmost point that described minion is closed, first utmost point of the 9th switch also links to each other with resonant circuit.
Priority Applications (1)
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| CN 201220241907 CN202652074U (en) | 2012-05-28 | 2012-05-28 | DC/DC converter based on LLC resonance |
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| CN 201220241907 CN202652074U (en) | 2012-05-28 | 2012-05-28 | DC/DC converter based on LLC resonance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944396A (en) * | 2014-04-11 | 2014-07-23 | 燕山大学 | LLC resonance type three-port DC-DC converter and control method thereof |
| CN104242634A (en) * | 2013-06-09 | 2014-12-24 | 深圳市力生美半导体器件有限公司 | DC/DC converter and switching power supply |
| CN104935166A (en) * | 2015-06-26 | 2015-09-23 | 长沙广义变流技术有限公司 | DC-DC power supply device |
| CN105186881A (en) * | 2015-09-09 | 2015-12-23 | 深圳市英威腾交通技术有限公司 | Novel LC series resonant DC/DC convertor and power electronic device |
-
2012
- 2012-05-28 CN CN 201220241907 patent/CN202652074U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242634A (en) * | 2013-06-09 | 2014-12-24 | 深圳市力生美半导体器件有限公司 | DC/DC converter and switching power supply |
| CN103944396A (en) * | 2014-04-11 | 2014-07-23 | 燕山大学 | LLC resonance type three-port DC-DC converter and control method thereof |
| CN104935166A (en) * | 2015-06-26 | 2015-09-23 | 长沙广义变流技术有限公司 | DC-DC power supply device |
| CN105186881A (en) * | 2015-09-09 | 2015-12-23 | 深圳市英威腾交通技术有限公司 | Novel LC series resonant DC/DC convertor and power electronic device |
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Granted publication date: 20130102 |
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| CX01 | Expiry of patent term |