METHOD AND CIRCUIT FOR DRIVING POWER TRANSISTORS MOUNTED INTO HALF-BRIDGE FROM REFERENCE CONTROL SIGNALS IN RELATION TO ANOTHER POTENTIAL AND INTEGRATED CIRCUIT INCORPORATING THIS CIRCUIT

摘要

P Driver circuit of power transistors in a half-bridge configuration from a control signal referenced to any potential between the line voltage (VL) for the power transistors and the voltage feedback line arrangement (-VL), comprising: BR/ an input circuit (52) which receives two floating voltage levels with respect to a common voltage level; BR/ a first circuit (56) for shifting the voltage. output of the input circuit; BR/ a low side driving circuit (74) which receives said referenced output with respect to the common voltage level; BR/ a second circuit (68, 70) for shifting the level said output from said first level shift circuit for producing a referenced signal with respect to a second level; and BR/ a control circuit (78) which receives the signal referenced with respect to said second level for driving the power transistor. / P