CN201994859U - Low voltage heavy current switch power supply based on third-order load resonance technology - Google Patents
Low voltage heavy current switch power supply based on third-order load resonance technology Download PDFInfo
- Publication number
- CN201994859U CN201994859U CN2011200538228U CN201120053822U CN201994859U CN 201994859 U CN201994859 U CN 201994859U CN 2011200538228 U CN2011200538228 U CN 2011200538228U CN 201120053822 U CN201120053822 U CN 201120053822U CN 201994859 U CN201994859 U CN 201994859U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- current
- power supply
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a low voltage heavy current switch power supply based on a third-order load resonance technology, which is characterized by comprising a uncontrollable rectifying circuit, a rectifying filter circuit, a full bridge inverter circuit and a load matching circuit which are connected sequentially, wherein a digital signal processor (DSP) microprocessor is arranged between an output end of the load matching circuit and the full bridge inverter circuit. The problems that in the switch power supply of the prior art, the partial current of an inverter is high, the voltage class of a switch component can not be made the best of and a high frequency transformer must be used are solved.
Description
Technical field
The utility model belongs to technical field of electronic equipment, is specifically related to a kind of low-voltage, high-current Switching Power Supply based on three rank load resonant technology.
Background technology
The low-voltage, high-current Switching Power Supply can be applied in occasions such as Voltage Regulator Module VRM, obtains people's attention with its electric circuit characteristic and technology.The conventional art that is applied to the low-voltage, high-current Switching Power Supply can be divided into high frequency technology, waveform interleaving technique and integrated magnetic etc., all there is the big problem of inverter section circulating current in the switch power supply system in these technology, cause the electric current and voltage grade that can not make full use of switching device, and use transformer for the output characteristic that reaches low-voltage, high-current, system bulk is increased, and the difficulty that the high frequency transformer of exporting big electric current designs and produces is very big, and cost is very high.
Summary of the invention
The purpose of this utility model provides a kind of low-voltage, high-current Switching Power Supply based on three rank load resonant technology, the inverter section electric current that has solved the Switching Power Supply that prior art exists effectively is big, can not make full use of the electric pressure of switching device and must use the problem of high frequency transformer.
The technical scheme that the utility model adopted is, a kind of low-voltage, high-current Switching Power Supply based on three rank load resonant technology, comprise the not control rectifying circuit, current rectifying and wave filtering circuit, full bridge inverter and the load matched circuit that connect successively, be connected with the DSP microprocessor between the output of load matched circuit and the full bridge inverter
Wherein, control rectifying circuit is not used for AC-input voltage is carried out rectification to obtain direct voltage; The direct voltage that current rectifying and wave filtering circuit is used for that rectification is obtained carries out filtering to obtain level and smooth direct voltage; Full bridge inverter is by shifting to regulating and controlling output voltage and power output; The load matched circuit is based on the voltage-current characteristic change-over circuit of load resonant technology, by selection and the rational load matched parameter to circuit topology, forms the output characteristic of low-voltage, high-current; The DSP microprocessor is realized control to full bridge inverter by phase shifting control and isolation drive after the output to the load matched circuit carries out feedback sample.
Control rectifying circuit is not the diode full-bridge circuit.
Between the output of DSP microprocessor and load matched circuit, and be lead between DSP microprocessor and the full bridge inverter and be connected or be signal and connect.
The beneficial effects of the utility model are to be core with the load resonant technology, use technology such as not controlling rectifying and wave-filtering and high-frequency inversion and realize low-voltage high-current power source.Avoid the big problem of inverter switch device electric current, thereby reduced the wastage, can more make full use of the switching device grade.Simultaneously, the three rank resonant circuits that utilize energy storage original paper inductance, electric capacity to form replace transformer, have reduced because of using the cost and the difficult design of high-frequency and high-voltage high power transformer, have further reduced the volume and the loss of system, have improved efficient.
Description of drawings
Fig. 1 is the structural representation of a kind of low-voltage, high-current Switching Power Supply based on three rank load resonant technology of the utility model;
Among Fig. 2, a does not adopt inverter output voltage of the present utility model and map of current, and b is inverter output voltage and the map of current from the utility model output.
Wherein, 1. not control rectifying circuit, 2. current rectifying and wave filtering circuit, 3. full bridge inverter, 4. load matched circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As shown in Figure 1, a kind of low-voltage, high-current Switching Power Supply based on three rank load resonant technology of the utility model is based on the closed-loop system that DSP microprocessor 5 is controlled.It comprises not control rectifying circuit 1, current rectifying and wave filtering circuit 2, full bridge inverter 3 and the load matched circuit 4 that connects successively, is connected with DSP microprocessor 5 between the output of load matched circuit 4 and the full bridge inverter 3.Wherein, between the output of DSP microprocessor and load matched circuit, and be lead between DSP microprocessor and the full bridge inverter and be connected or be signal and connect.The utility model is connected the not input of control rectifying circuit 1 with electric main as system's input voltage in use.
The utility model is under the situation of not using transformer, utilize the matching effect of 4 pairs of loads of load matched circuit, when making power supply output low-voltage, high-current, reduce the electric current that inverter section flows through in the power-supply system, make full use of the switching device grade, and under the situation that does not need to isolate, can replace transformer fully.
As shown in Figure 2, a does not adopt inverter output voltage of the present utility model and map of current, and b is inverter output voltage and the map of current from the utility model output.Wherein, square wave is a voltage, and sine wave is an electric current, and the power output of inverter is 500W.Experiment shows that under the effect of load resonant circuit, inverter current has reduced half under same power output.Like this, the switching device in the inverter can be selected the lower model of current class, utilizes the switching device grade more fully, and very big using value is arranged in practice.
Claims (3)
1. low-voltage, high-current Switching Power Supply based on three rank load resonant technology, it is characterized in that, comprise the not control rectifying circuit (1), current rectifying and wave filtering circuit (2), full bridge inverter (3) and the load matched circuit (4) that connect successively, be connected with DSP microprocessor (5) between the output of described load matched circuit (4) and the described full bridge inverter (3)
Wherein, described not control rectifying circuit (1) is used for AC-input voltage is carried out rectification to obtain direct voltage; The direct voltage that described current rectifying and wave filtering circuit (2) is used for that rectification is obtained carries out filtering to obtain level and smooth direct voltage; Described full bridge inverter (3) is by shifting to regulating and controlling output voltage and power output; Described load matched circuit (4) is based on the voltage-current characteristic change-over circuit of load resonant technology, by selection and the rational load matched parameter to circuit topology, forms the output characteristic of low-voltage, high-current; Described DSP microprocessor (5) is realized control to full bridge inverter (3) by phase shifting control and isolation drive after the output to load matched circuit (4) carries out feedback sample.
2. according to the described low-voltage, high-current Switching Power Supply of claim 1, it is characterized in that described not control rectifying circuit (1) is the diode full-bridge circuit based on three rank load resonant technology.
3. according to the described low-voltage, high-current Switching Power Supply of claim 1 based on three rank load resonant technology, it is characterized in that, between the output of described DSP microprocessor (5) and load matched circuit (4), and be lead between DSP microprocessor (5) and the full bridge inverter (3) and be connected or be signal and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200538228U CN201994859U (en) | 2011-03-03 | 2011-03-03 | Low voltage heavy current switch power supply based on third-order load resonance technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200538228U CN201994859U (en) | 2011-03-03 | 2011-03-03 | Low voltage heavy current switch power supply based on third-order load resonance technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201994859U true CN201994859U (en) | 2011-09-28 |
Family
ID=44671333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200538228U Expired - Fee Related CN201994859U (en) | 2011-03-03 | 2011-03-03 | Low voltage heavy current switch power supply based on third-order load resonance technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201994859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611325A (en) * | 2012-03-19 | 2012-07-25 | 西安理工大学 | Inverter circuit load matching method based on high-level resonance technique |
-
2011
- 2011-03-03 CN CN2011200538228U patent/CN201994859U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611325A (en) * | 2012-03-19 | 2012-07-25 | 西安理工大学 | Inverter circuit load matching method based on high-level resonance technique |
| CN102611325B (en) * | 2012-03-19 | 2014-08-20 | 西安理工大学 | Inverter circuit load matching method based on high-level resonance technique |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110168896A (en) | DC to DC current transformer and control method | |
| CN104124874B (en) | Ultrahigh-frequency isolating resonant converter | |
| CN101685980B (en) | Full-bridge zero-voltage boost switching resonant converter based on LLC used for UPS | |
| CN105932880A (en) | Magnetizing Current Based Control Of Resonant Converters | |
| CN105207483A (en) | Llc resonant power converter | |
| CN203590031U (en) | DC-DC converter realizing high-efficiency high-gain low-voltage current stress | |
| CN105119391A (en) | High-efficiency electric energy transmitting terminal and wireless electric energy transmission apparatus | |
| CN106165283A (en) | Electronic installation and control method for the conversion of high-frequency AC DC | |
| CN106787757A (en) | A kind of CLTCL resonance DCs converter | |
| CN103580501B (en) | The diverter switch capacitor type AC-AC converter of fixing no-load voltage ratio 1/4 or 4 | |
| CN104135154A (en) | Isolated four-element resonance circuit and control method | |
| CN107395015A (en) | A kind of low ripple Sofe Switch synchronous rectification Buck converters based on coupling inductance | |
| CN201994859U (en) | Low voltage heavy current switch power supply based on third-order load resonance technology | |
| CN205141847U (en) | Efficient electric energy transmitting terminal and wireless power transmission device | |
| CN104065283A (en) | Bridge-free type PRC alternating-current-to-direct-current power converter | |
| CN204179950U (en) | A kind of 2-3 type multiple no-load voltage ratio switching capacity type AC-AC converter | |
| CN204013246U (en) | High-frequency and high-voltage sinewave output power supply | |
| CN106787756A (en) | A kind of CL FT CL resonance DC converters | |
| CN106787751A (en) | Efficient phase whole-bridging circuit under light-load mode | |
| CN203590040U (en) | Power supply circuit and LED street lamp | |
| CN203339952U (en) | Switched-capacitor AC-AC converter | |
| CN206650872U (en) | Intelligent dimming power circuit | |
| CN204696955U (en) | A kind of photovoltaic DC-to-AC converter adopting transformer auxiliary resonance | |
| CN201830154U (en) | Logic link control (LLC) series resonance circuit of switching power supply | |
| CN104167944A (en) | High-power medium-frequency power supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140303 |