Patent ID: 7265601
Filing Date: 2007-09-04
Classification: H02M,H03F,H03K

Abstract:
1. A DC/DC converter comprising: at least one switching device responsive to a drive signal having a drive voltage level, for receiving power at a DC input and delivering DC output current to an output circuit of said converter; a driver for supplying said drive signal to said switching device; an adaptive drive voltage circuit which generates a feedback signal responsive to said DC output current, and in response thereto generates a control signal; and a linear regulator which receives said control signal at an input thereof, and controls said driver to supply said drive voltage level to said switching device; wherein said linear regulator comprises: an amplifier which receives said control signal at a first input thereof; a drive voltage source comprising a resistance which generates said drive voltage level according to a current through said resistance, and a transistor in series with said resistance for controlling said current; an output of said amplifier being connected to a control terminal of said transistor; and a voltage from said drive voltage source being fed back to a second input of said amplifier.