Patent ID: 7952317
Filing Date: 2011-05-31
Classification: H01L,H02P,H03K

Abstract:
1. A motor driving inverter circuit module including a first output terminal, a second output terminal, and a third output terminal for respectively providing a first-phase motor driving output signal, a second-phase motor driving output signal, and a third-phase motor driving output signal, the inverter circuit module comprising: a first high voltage driver configured to generate a first-phase upper arm driving signal and a first-phase lower arm driving signal in response to input signals for driving a first-phase upper arm and a first-phase lower arm; a second high voltage driver configured to generate a second-phase upper arm driving signal and a second-phase lower arm driving signal in response to input signals for driving a second-phase upper arm and a second-phase lower arm; a third high voltage driver configured to generate a third-phase upper arm driving signal and a third-phase lower arm driving signal in response to input signals for driving a third-phase upper arm and a third-phase lower arm; a pair of a first upper arm transistor and a first lower arm transistor configured to generate the first-phase motor driving output signal in response to the first-phase upper arm and lower arm driving signals generated by the first high voltage driver; a pair of a second upper arm transistor and a second lower arm transistor configured to generate the second-phase motor driving output signal in response to the second-phase upper arm and lower arm driving signals generated by the second high voltage driver; and a pair of a third upper arm transistor and a third lower arm transistor configured to generate the third-phase motor driving output signal in response to the third-phase upper arm and lower arm driving signals generated by the third high voltage driver; wherein the first-phase, second-phase, and third-phase upper arm transistors comprise a gate insulation film whose thickness is selected in proportion to a ratio C wherein BV