CN202713149U - Direct-current booster circuit - Google Patents
Direct-current booster circuit Download PDFInfo
- Publication number
- CN202713149U CN202713149U CN 201220294544 CN201220294544U CN202713149U CN 202713149 U CN202713149 U CN 202713149U CN 201220294544 CN201220294544 CN 201220294544 CN 201220294544 U CN201220294544 U CN 201220294544U CN 202713149 U CN202713149 U CN 202713149U
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- mosfet
- diode
- circuit
- circuit breaker
- inductance
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Abstract
The utility model discloses a direct-current booster circuit. The direct-current booster circuit comprises a circuit breaker, a first inductor, a second inductor, a first MOSFET, a second MOSFET, a first diode, a second diode, and a capacitor. One end of the first inductor is connected with the circuit breaker and used to receive an input voltage through the circuit breaker, and the other end of the first inductor is connected with the anode of the first diode and the drain of the first MOSFET separately. One end of the second inductor is connected with the circuit breaker and used to receive an input voltage through the circuit breaker, and the other end of the second inductor is connected with the anode of the second diode and the drain of the second MOSFET separately. One end of the capacitor is connected with the cathode of the first diode and the cathode of the second diode separately, and the other of the capacitor is connected with the source of the first MOSFET and the source of the second MOSFET separately. According to the utility model, two sets of independent booster circuits are provided, the two sets of booster circuits can work at the same time or work alternately, and the whole circuit can work normally when one set of booster circuit is damaged, so the service time of the circuit is prolonged.
Description
Technical field
The utility model relates to a kind of DC voltage booster circuit.
Background technology
At present, generally realize the boosting inverter of DC-to-DC by Boost circuit (switch DC booster circuit), structure as shown in Figure 1.Wherein, in charging process, switching tube Q ' (triode or metal-oxide-semiconductor) conducting, input voltage flows through inductance.Diode D ' prevents capacitor C ' over the ground discharge.Because input voltage V
InElectric current on ' be direct current, so inductance L ' increases so that certain ratio is linear, and this ratio is relevant with the inductance size.Along with inductive current increases, inductance L ' inner some energy that stored; The electric current that in the discharge process, switching tube Q ' cut-off is because inductance L ' electric current retention performance, the inductance L of flowing through ' can not become 0 at once, but the value when complete by charging slowly becomes 0.And original circuit has disconnected, so inductance L ' can only discharge by novel circuit, namely begin to capacitor C ' charging, capacitor C ' both end voltage rising, at this moment output voltage V
Out' be higher than input voltage V
In', it is complete to boost.But, when boosting, be easy to damage parts, in case certain parts damages, can only be out of service.And diode D ' and switching tube Q ' have corresponding switching loss, and especially switching tube Q ' is restricting power efficiency.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art and a kind of high power and high efficiency DC voltage booster circuit is provided, it has the separate booster circuit of two covers, can work simultaneously and also can take turns to operate, and integral body can also work when a cover damaged therein, had prolonged the service time of circuit.
The technical scheme that realizes above-mentioned purpose is:
A kind of DC voltage booster circuit comprises circuit breaker, the first inductance, the second inductance, a MOSFET(metal-oxide layer-semiconductor-field-effect transistor), the 2nd MOSFET, the first diode, the second diode and electric capacity, wherein:
One end of described the first inductance connects described circuit breaker and receives input voltage by this circuit breaker, and the other end connects respectively the drain electrode of positive pole and a described MOSFET of described the first diode;
One end of described the second inductance connects described circuit breaker and receives input voltage by this circuit breaker, and the other end connects respectively the drain electrode of positive pole and described the 2nd MOSFET of described the second diode;
One end of described electric capacity connects respectively the negative pole of described the first diode and the negative pole of described the second diode, and the other end connects respectively the source electrode of a described MOSFET and the source electrode of described the 2nd MOSFET;
The end output output voltage that joins of described electric capacity and the first diode and the second diode;
The end ground connection of joining of described electric capacity and a MOSFET and the 2nd MOSFET.
Above-mentioned DC voltage booster circuit, wherein, a described MOSFET and the 2nd MOSFET are N-type MOSFET.
The beneficial effects of the utility model are: the utlity model has the separate booster circuit of two covers, they can be worked simultaneously and also can take turns to operate, and realize that high power and high efficiency direct voltage boost.And integral body can also work when wherein a cover damages, has prolonged the service time of circuit.The utility model is simple in structure simultaneously, is easy to realize.
Description of drawings
Fig. 1 is the circuit diagram of existing Boost circuit;
Fig. 2 is the circuit diagram of DC voltage booster circuit of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
See also Fig. 2, DC voltage booster circuit of the present utility model comprises circuit breaker K, the first inductance L 1, the second inductance L 2, a MOSFET Q1, the 2nd MOSFET Q2, the first diode D1, the second diode D2 and capacitor C, wherein:
Circuit breaker K prevents that voltage is excessive, plays the effect of protective circuit;
One end connecting breaker K of the first inductance L 1 and receive input voltage V by this circuit breaker K
In, the other end connects respectively the drain electrode of positive pole and the MOSFET Q1 of the first diode D1;
One end connecting breaker K of the second inductance L 2 and receive input voltage V by this circuit breaker K
In, the other end connects respectively the drain electrode of positive pole and the 2nd MOSFET Q2 of the second diode D2;
One end of capacitor C connects respectively the negative pole of the first diode D1 and the negative pole of the second diode D2, and the other end connects respectively the source electrode of a MOSFET Q1 and the source electrode of the 2nd MOSFET Q2;
The end output output voltage V of joining of capacitor C and the first diode D1 and the second diode D2
Out
The end ground connection of joining of capacitor C and a MOSFET Q1 and the 2nd MOSFET Q2.
Operation principle of the present utility model: the first inductance L 1 store electrical energy when a MOSFET Q1 is closed, when a MOSFET Q1 disconnected, the first inductance L 1 was charged to capacitor C by the first diode D1, realizes boosting; The second inductance L 2 store electrical energy when the 2nd MOSFET Q2 is closed, when the 2nd MOSFET Q2 disconnected, the second inductance L 2 was charged to capacitor C by the second diode D2, realizes boosting; The one MOSFET Q1 and the 2nd MOSFET Q2 can also can work simultaneously in alternation, thereby reduce the switching loss of a MOSFET Q1, the 2nd MOSFET Q2, the first diode D1 and the second diode D2, and improve the power efficiency that boosts.Even and during a certain parts damages, whole circuit still can normally move, thereby greatly prolonged the service time of circuit and reduced because the impact that fault is brought.
In the present embodiment, a MOSFET Q1 and the 2nd MOSFET Q2 are N-type MOSFET.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (2)
1. a DC voltage booster circuit is characterized in that, comprises circuit breaker, the first inductance, the second inductance, a MOSFET, the 2nd MOSFET, the first diode, the second diode and electric capacity, wherein:
One end of described the first inductance connects described circuit breaker and receives input voltage by this circuit breaker, and the other end connects respectively the drain electrode of positive pole and a described MOSFET of described the first diode;
One end of described the second inductance connects described circuit breaker and receives input voltage by this circuit breaker, and the other end connects respectively the drain electrode of positive pole and described the 2nd MOSFET of described the second diode;
One end of described electric capacity connects respectively the negative pole of described the first diode and the negative pole of described the second diode, and the other end connects respectively the source electrode of a described MOSFET and the source electrode of described the 2nd MOSFET;
The end output output voltage that joins of described electric capacity and the first diode and the second diode;
The end ground connection of joining of described electric capacity and a MOSFET and the 2nd MOSFET.
2. DC voltage booster circuit according to claim 1 is characterized in that, a described MOSFET and the 2nd MOSFET are N-type MOSFET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220294544 CN202713149U (en) | 2012-06-21 | 2012-06-21 | Direct-current booster circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220294544 CN202713149U (en) | 2012-06-21 | 2012-06-21 | Direct-current booster circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202713149U true CN202713149U (en) | 2013-01-30 |
Family
ID=47593412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220294544 Expired - Lifetime CN202713149U (en) | 2012-06-21 | 2012-06-21 | Direct-current booster circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202713149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723865A (en) * | 2012-06-21 | 2012-10-10 | 上海市电力公司 | Direct-current booster circuit |
-
2012
- 2012-06-21 CN CN 201220294544 patent/CN202713149U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723865A (en) * | 2012-06-21 | 2012-10-10 | 上海市电力公司 | Direct-current booster circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |