Patent ID: 7791904
Filing Date: 2010-09-07
Classification: H02M

Abstract:
1. An inductance-voltage clamping full-bridge soft-switch circuit, comprising: a full-bridge converter; a transformer; output rectifying units; an inductor; a resistor; a first clamping diode and a second clamping diode, wherein leading bridge arms and lagging bridge arms of said full-bridge converter are connected to positive and negative input buses, respectively, said inductor including a first auxiliary inductor winding and a clamping second winding, a primary side of said transformer connected to the first winding in series, and then to a middle point of the leading bridge arms and lagging bridge arms of the full-bridge converter, two ends of a secondary side of the transformer being connected to the output rectifying units, respectively, a first end of the second winding connecting to the first winding at a side close to the middle point of the leading bridge arms of the full-bridge converter, and a second end of the second winding connecting to the resistor in series, and the clamping diodes on the positive and negative input buses via the first clamping diode and the second clamping diode, respectively, and a capacitor connected to the two ends of the resistor in parallel, wherein the capacitor and resistor are selected in accordance with the period of the circuit and as a product of the value of each.