a DC converter
A technology of DC converter and transformer, which is applied in the direction of converting DC power input to DC power output, instruments, and adjusting electric variables, etc., which can solve the problems of high cost and achieve high conversion efficiency, simple and reliable circuit, and small voltage and current stress.
Active Publication Date: 2019-08-02
南京奥云德电子科技有限公司
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Problems solved by technology
In addition, the output circuit of the forward converter also needs to have a filter inductor Lo, and the cost is relatively high.
Method used
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[0023] first embodiment. Such as figure 1 shown. A DC converter includes a power input terminal Vin, an input circuit, a control circuit, a main transformer (T-main), a first drive transformer (T-driver1), and an output circuit. The input circuit, the main transformer and the output circuit are connected in sequence. The control circuit is connected to the first drive transformer (T-driver1), and the first drive transformer (T-driver1) is respectively connected to the input circuit and the output circuit.
[0024] The main transformer (T-main) includes a primary winding N00, a first secondary winding N01, and a second secondary winding N02. The first driving transformer (T-driver1) includes a first input driving winding N10, a first output driving winding N11, a second output driving winding N12, a third output driving winding N13, and a fourth output driving winding N14. The first driving transformer is connected to the input circuit and the output circuit, wherein the fi...
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The invention provides a direct current converter. The direct current converter comprises an input circuit, a main transformer and an output circuit which are orderly connected with each other, a first capacitor, a second capacitor, a first power tube, and a second power tube which are connected into a half-bridge circuit; the two ends of a primary side winding are respectively connected with the midpoints of two bridge arms of the half-bridge circuit; a control circuit comprises a square wave signal of 50% duty ratio and a first driver which are orderly connected with each other, and a square wave signal of 50% duty ratio and a second driver which are orderly connected with each other; one end of a first input drive winding of a first drive transformer is connected with the first driver, and the other end thereof is connected with the second driver; and a first output drive winding and a second output drive winding of the first drive transformer respectively control the on-off of the first power tube and the second power tube. According to the direct current converter provided by the invention, a circuit is controlled by signal driving power tube of 50% duty ratio, the circuit is simple and reliable, and the cost performance is higher.
Description
technical field [0001] The invention relates to a power electronic conversion device, in particular to a DC converter. Background technique [0002] The DC converter in the prior art needs to use a dedicated PWM control chip to control the change of the output voltage or current. Moreover, the output circuit of the forward converter also needs to have a filter inductor Lo, and the cost is relatively high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a DC converter with high cost performance and simple structure. [0004] A DC converter, comprising an input circuit, a main transformer, and an output circuit sequentially connected, the input circuit is a half-bridge circuit, a first capacitor and a second capacitor are connected in series on the first bridge arm, and a first capacitor is connected in series on the second bridge arm. power tube, second power tube, one end of the primary side winding of the main...
Claims
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IPC IPC(8): H02M3/335H02M1/088
CPCH02M1/088H02M3/33561H02M3/33569H02M3/33576
Inventor 曾忠
Owner 南京奥云德电子科技有限公司