Patent ID: 8581638
Filing Date: 2013-11-12
Classification: H03K

Abstract:
1. A high-side driver circuit, comprising: a power transistor, a drain of the power transistor coupling with a first voltage source; a first transistor, a source of the first transistor coupling between a first capacitor and a first diode, the second diode coupling with a second voltage source; a second transistor, a drain of the second transistor coupling with a drain of the first transistor; a second capacitor coupling with the drain of the first transistor and the drain of the second transistor; a second diode coupling with the second capacitor and the drain of the second transistor, wherein the second transistor coupling with an output; a resistor coupling between the second capacitor and a gate of the power transistor; a first level shifter coupling with a first input and a second input; a latch loop device coupling with the first level shifter and a gate of the first transistor and a gate of the second transistor; and a start-up circuit coupling between the resistor and the second capacitor; wherein the start-up circuit being used to turn off the power transistor, so that the second voltage source having enough time to charge the first capacitor.