Patent ID: 6977533

Claim:
A method to drive a high-voltage H-bridge using CMOS technology is comprising: providing a control logic circuit, a power management module, a charge pump, two high-side drivers of the H-bridge, a first voltage divider, a second voltage divider, two low-side drivers of the H-bridge, two high-side transistors of the H-bridge, two low-side transistors of the H-bridge, and a module for reverse supply protection; generate control signals for said high-side drivers and for said low-side drivers; generate a voltage to feed said low-side drivers; generate a voltage to feed said charge pump; drive said high-side drivers and drive said module for reverse supply protection by said charge pump, wherein said charge pump comprises a switching network controlled by a clocking scheme; drive one of said high-side transistors by a corresponding high-side driver; keep the reference voltage of a first high-side driver on the voltage level of a first midpoint of the H-bridge; keep the reference voltage of a second high-side driver on the voltage level of a second midpoint of the H-bridge; and drive each of said two low-side transistors of said H-bridge by a corresponding low-side driver.