DIRECT CURRENT VOLTAGE CONVERSION DEVICE

摘要

A direct current voltage conversion device includes a buck converter receiving a direct current input voltage and outputting a direct current first voltage according to a first control signal, a series resonant converter outputting an alternating current second voltage according to a second control signal and a third control signal, a transformer that receives the alternating current second voltage, a rectifier, and an output capacitor electrically coupled with the rectifier. The rectifier generates a direct current output voltage according to a fourth control signal and a fifth control signal, which is outputted across the output capacitor.

主权项

1. A direct current voltage conversion device adapted to receive a direct current input voltage and to output a direct current output voltage, the direct current voltage conversion device comprising:
a buck converter adapted to receive the direct current input voltage and a first control signal related to the direct current output voltage, and to output a direct current first voltage according to the first control signal; a series resonant converter that is electrically coupled with the buck converter and that receives the direct current first voltage from the buck converter, the series resonant converter further receiving a second control signal and a third control signal, and outputting an alternating current second voltage according to the second control signal and the third control signal; a transformer that is electrically coupled with the series resonant converter, that receives the alternating current second voltage, and that includes a first winding on a primary side of the transformer, and a second winding and a third winding on a secondary side of the transformer, each of the first winding, the second winding and the third winding having a first terminal and a second terminal, the first terminal being a dotted terminal, the first terminal and the second terminal of the first winding being electrically coupled with the series resonant converter, the first terminal of the third winding being electrically connected with the second terminal of the second winding; a rectifier that is electrically coupled with the first terminal of the second winding and the second terminal of the third winding and that receives a fourth control signal and a fifth control signal; and an output capacitor having a first terminal electrically coupled with the second terminal of the second winding, and a second terminal electrically coupled with the rectifier; the rectifier rectifying a voltage across the first terminal of the second winding and the second terminal of the third winding so as to generate the direct current output voltage according to the fourth control signal and the fifth control signal, the direct current output voltage being outputted across the first terminal and the second terminal of the output capacitor.