High Efficiency Driver - voltage conversion circuit having a

摘要

PURPOSE: To suppress power consumption due to the loss of gate capacity storage charges and increase power inverter efficiency of a voltage inverter circuit by connecting the grounding side of a predriver in the voltage inverter circuit to the input power source, not to the ground potential, thus converting the circuit into a power recovery circuit. ;CONSTITUTION: Gate elements 10 and 11 (group No. 1) are connected in series to an input power source line 1 and grounding line 3 in No. 1 booster circuit 19, and gate elements 8 and 9 (group No. 2) are connected in series to the input power source line 1 and a power source output line 14. A voltage booster capacitor 12 is connected to the gate elements 10 and 11 (group No. 1), and between the gate elements 8 and 9 (group No. 2). An output capacitor 13 is connected to a power source output line 14 and grounding line 3. The gate elements 8, 9, 10, and 11 are controlled through a control circuit 16 according to a clock signal 18. Pre-drivers 4 and 5 control the gate elements 8 and 9, being connected so that they operate between the output line 2 and input power source line 1 of No. 2 booster circuit 17.;COPYRIGHT: (C)1994,JPO&Japio