Patent ID: 7531993

Claim:
A half bridge circuit, the circuit comprising: a first semiconductor switch having at least one control gate; a second semiconductor switch having at least two control gates; a first driver having an output connected to a control gate of the first semiconductor switch for selectively applying a first control voltage to the control gate of the first semiconductor switch; and, a second driver having an output connected to a first control gate of the second semiconductor switch for selectively applying a second control voltage to said first control gate of the second semiconductor switch; the output of the first driver being connected to a second control gate of the second semiconductor switch by a circuit arrangement such that when the first driver is operated to apply a high, positive voltage to the control gate of the first semiconductor switch, a positive voltage is applied to said second control gate of the second semiconductor switch, and such that when the first driver is operated to apply a low, zero or small voltage to the control gate of the first semiconductor switch, a negative voltage is applied to said second control gate of the second semiconductor switch.