Noise Immunity Enhanced 625V High-Side Driver

A high-side driver has a common-mode dv/dt noise cancellation circuit with V/I and I/V conversion technique to achieve the stable operation up to dv/dt=60V/ns and -10V of allowable negative output voltage at 15V supply. To prevent the malfunction due to the pulsating noise on driver's supply voltage, the BiCMOS based logic circuit is incorporated. This circuit guarantees malfunction-free operation up to +68Vp and -50Vp of the pulse noises. The chip is implemented by using 625V BCDMOS process based on new junction termination technology