Patent ID: 8441290

Claim:
A half bridge converter, comprising: a transformer including a primary winding; a high side switch coupled between a first input terminal of the half bridge converter and a first terminal of the primary winding; a low side switch coupled between a second input terminal of the half bridge converter and the first terminal of the primary winding; a first control circuit coupled to the first input terminal of the half bridge converter and the first terminal of the primary winding, the first control circuit coupled to control the high side switch in response to a rate of voltage change with respect to time (dv/dt) across the high side switch while the high side switch is off; and a second control circuit coupled to the first terminal of the primary winding and the second input terminal of the half bridge converter, the second control circuit coupled to control the low side switch in response to a rate of voltage change with respect to time (dv/dt) across the low side switch while the low side switch is off.