Patent ID: 8278887
Filing Date: 2012-10-02
Classification: H02M

Abstract:
1. A method of starting a DC/DC voltage converter, the converter comprising: an inductor and a low-side switch connected in a series conduction path, a V a freewheeling MOSFET connected in parallel with the inductor, a first body bias generator being connected between the source and drain terminals of the freewheeling MOSFET; and an energy transfer switch connected between the V the method comprising: closing the freewheeling MOSFET and the energy transfer switch while maintaining the low-side switch in an open condition; while maintaining the freewheeling MOSFET and the energy transfer switch in a closed condition and maintaining the low-side switch in an open condition, applying a DC input voltage to a first terminal of the inductor; and turning off the energy transfer MOSFET when a voltage at the output terminal reaches a predetermined level, the predetermined level being less than the DC input voltage.