Patent ID: 7327178
Filing Date: 2008-02-05
Classification: H02M

Abstract:
1. A timing circuit for a DC to DC converter having two MOSFET switches coupled to primary windings of an isolation transformer and two output MOSFET switches coupled to secondary windings of the isolation transformer, the timing circuit comprising: an input terminal for receiving a pulse width modulated signal that switches low at time t a first timing output signal circuit responsive to the pulse width modulated signal and providing a first timing output signal that switches low at time t a second timing output signal circuit responsive to the pulse width modulated signal and providing a second timing output signal that switches high at time t a third timing output signal circuit responsive to the pulse width modulated signal and providing a third timing output signal that switches low at time t a fourth timing output signal circuit responsive to the pulse width modulated signal and providing a fourth timing output signal that switches high at time t