CN202679253U - Constant voltage multipath output direct current-direct current converter - Google Patents
Constant voltage multipath output direct current-direct current converter Download PDFInfo
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- CN202679253U CN202679253U CN 201220315855 CN201220315855U CN202679253U CN 202679253 U CN202679253 U CN 202679253U CN 201220315855 CN201220315855 CN 201220315855 CN 201220315855 U CN201220315855 U CN 201220315855U CN 202679253 U CN202679253 U CN 202679253U
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Abstract
The utility model relates to a constant voltage multipath output direct current-direct current converter which includes an LC input circuit (1), a self-oscillation circuit (2), a transformer part (3), and a multipath rectifying and filtering output part (4). The LC input circuit (1) is provided with an input inductance L1. One terminal of the input inductance L1 is connected with a power supply, and the other terminal of the input inductance L1 is connected in series with an input filter capacitor C1. The other terminal of the input filter capacitor C1 is connected with the GND of the power supply. The transformer part (3) includes a transformer which has at least two windings on the secondary side, a main rectifier and an auxiliary rectifying circuit. The LC input circuit (1) is connected with the self-oscillation circuit (2). The self-oscillation circuit (2) is connected with a main winding of the transformer. The main rectifier and the auxiliary rectifying circuit are connected with an auxiliary winding of the transformer.
Description
Technical field
The utility model relates to a kind of voltage multi-channel output DC-DC inverter of deciding.
Background technology
In modern electronic equipment, usually need the DC power supply of a plurality of different brackets to power.If each grade direct voltage is all adopted the power supply of single channel out-put supply, although can well satisfy the power reguirements of load, the cost of power supply, volume and weight etc. all can increase.So the DC-DC converter that generally adopts multichannel output is providing the direct voltage source of a plurality of different brackets, and DC-to-DC multichannel product is few on the market at present, can not satisfy client's needs, especially decides voltage module application of power field at DC-DC.
Summary of the invention
Technical assignment of the present utility model provides a kind of realization soft start function for the deficiencies in the prior art, multi-channel DC with low cost-DC Module supply convertor, and in conjunction with lc circuit, the power module conversion efficiency will improve greatly.The utility model is to be achieved through the following technical solutions above-mentioned purpose:
A kind ofly decide the voltage multi-channel output DC-DC inverter, comprise LC input circuit (1), self-maintained circuit (2), transformer section (3) and multichannel rectifying and wave-filtering efferent (4);
Described LC input circuit (1) has input inductance L 1, and these input inductance L 1 one ends are connected with power supply, and the other end and the input filter capacitor C1 of input inductance L 1 are connected in series, and the filter capacitor C1 other end is connected with power supply GND;
Described transformer section (3) comprises the transformer that at least 2 windings of secondary are above, main converter and the auxiliary rectification circuit of using;
Described LC input circuit (1) is connected with self-maintained circuit (2), and self-maintained circuit (2) links to each other with the transformer main winding, and main converter is connected with the transformer auxiliary winding with rectification circuit with auxiliary.
Described self-maintained circuit (2) comprises circuit Q1 and circuit Q2, and described circuit Q1 and circuit Q2 adopt transistor circuit commonly used.
Also comprise the self-maintained circuit protective circuit, described self-maintained circuit protective circuit comprises capacitor C 3, and described capacitor C 3 is series between the collector electrode of circuit Q1 and circuit Q2.
Described multichannel rectifying and wave-filtering efferent (4) is Voltage-output more than 2 tunnel.
The beneficial effects of the utility model:
A kind of multi-channel output DC-DC inverter of the present utility model provides the direct voltage source of a plurality of different brackets, is substituted a plurality of independent single channel output DCs source; Add lc circuit at input, not only make the product stabilized input voltage, and make the EMC property enhancement, production interchange efficient improves; Add the self-maintained circuit protective circuit in the vibration self-excited circuit, make self-maintained circuit more stable, protective feature is good; Oscillating circuit adopts self-maintained circuit, and is with low cost.Stable, with low cost from the above-mentioned properties of product that guaranteed, improved the cost performance of product, in actual applications, obtained certain economic benefit.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present utility model;
Embodiment
Below in conjunction with specific embodiment the utility model has been done further description.
As shown in Figure 1, a kind ofly decide the voltage multi-channel output DC-DC inverter, comprise LC input circuit (1), self-maintained circuit (2), transformer section (3) and multichannel rectifying and wave-filtering efferent (4); Described LC input circuit (1) has input inductance L 1, and these input inductance L 1 one ends are connected with power supply, and the other end and the input filter capacitor C1 of input inductance L 1 are connected in series, and the filter capacitor C1 other end is connected with power supply GND; Described transformer section (3) comprises the transformer that at least 2 windings of secondary are above, main converter and the auxiliary rectification circuit of using; Described LC input circuit (1) is connected with self-maintained circuit (2), and self-maintained circuit (2) links to each other with the transformer main winding, and main converter is connected with the transformer auxiliary winding with rectification circuit with auxiliary.Described self-maintained circuit (2) comprises circuit Q1 and circuit Q2, and described circuit Q1 and circuit Q2 adopt transistor circuit commonly used.Also comprise the self-maintained circuit protective circuit, described self-maintained circuit protective circuit comprises capacitor C 3, and described capacitor C 3 is series between the collector electrode of circuit Q1 and circuit Q2.Described multichannel rectifying and wave-filtering efferent (4) is Voltage-output more than 2 tunnel.
Input voltage provides voltage to self-maintained circuit through lc circuit, and self-maintained circuit is by Q1, and the saturated and cut-off of Q2 realizes the self-oscillation frequency and drives function.Energy is through the overcoupling output transformer, the diode D1 of rectifying output circuit, and D2 ..., Dn rectification output realizes multichannel output power conversion, output voltage, thus finish the whole course of work of DC-DC power conversion.
Certainly; the above only is a kind of execution mode of the present utility model; should be understood that those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications all belong within the protection range of the utility model claim.
Claims (4)
1. decide the voltage multi-channel output DC-DC inverter for one kind, comprise LC input circuit (1), self-maintained circuit (2), transformer section (3) and multichannel rectifying and wave-filtering efferent (4);
Described LC input circuit (1) has input inductance L 1, and these input inductance L 1 one ends are connected with power supply, and the other end and the input filter capacitor C1 of input inductance L 1 are connected in series, and the filter capacitor C1 other end is connected with power supply GND;
Described transformer section (3) comprises the transformer that at least 2 windings of secondary are above, main converter and the auxiliary rectification circuit of using;
Described LC input circuit (1) is connected with self-maintained circuit (2), and self-maintained circuit (2) links to each other with the transformer main winding, and main converter is connected with the transformer auxiliary winding with rectification circuit with auxiliary.
2. a kind of voltage multi-channel output DC-DC inverter of deciding as claimed in claim 1, described self-maintained circuit (2) comprises circuit Q1 and circuit Q2, described circuit Q1 and circuit Q2 adopt transistor circuit commonly used.
3. a kind of voltage multi-channel output DC-DC inverter of deciding as claimed in claim 1; also comprise the self-maintained circuit protective circuit; described self-maintained circuit protective circuit comprises capacitor C 3, and described capacitor C 3 is series between the collector electrode of circuit Q1 and circuit Q2.
4. a kind of voltage multi-channel output DC-DC inverter of deciding as claimed in claim 1, described multichannel rectifying and wave-filtering efferent (4) is Voltage-output more than 2 tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315855 CN202679253U (en) | 2012-07-03 | 2012-07-03 | Constant voltage multipath output direct current-direct current converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315855 CN202679253U (en) | 2012-07-03 | 2012-07-03 | Constant voltage multipath output direct current-direct current converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679253U true CN202679253U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220315855 Expired - Fee Related CN202679253U (en) | 2012-07-03 | 2012-07-03 | Constant voltage multipath output direct current-direct current converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105210279A (en) * | 2013-05-14 | 2015-12-30 | 西门子公司 | Switching converter |
-
2012
- 2012-07-03 CN CN 201220315855 patent/CN202679253U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105210279A (en) * | 2013-05-14 | 2015-12-30 | 西门子公司 | Switching converter |
| CN105210279B (en) * | 2013-05-14 | 2018-07-06 | 西门子公司 | Switch converters |
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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: 20130116 Termination date: 20170703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |