Patent ID: 8587965
Filing Date: 2013-11-19
Classification: H02M,Y02B

Abstract:
1. A current-input-type parallel resonant DC/DC converter, comprising: an inverter circuit, for converting an input DC signal into a positive and negative alternating square wave current; a resonant network, for converting the positive and negative alternating square wave current into a sine-voltage; a transformer, for realizing an isolation of power transmission; a full-wave rectifier circuit, for rectifying the sine-voltage; and an output filter circuit, for producing a DC output-voltage, wherein the inverter circuit is connected to both terminals of a primary side of the transformer through the resonant network connected in series with the inverter circuit, a common-polarity terminal of a first winding at a secondary side of the transformer and an opposite-polarity terminal of a second winding at the secondary side of the transformer are respectively connected to an input of the full-wave rectifier circuit, and an output of the full-wave rectifier circuit and a center-tap terminal at the secondary side of the transformer are respectively connected to an input of the output filter circuit, wherein the resonant network only comprises: wherein there is no series inductive element between the inverter circuit and the parallel-connected resonant inductor and capacitor in the resonant network.