A versatile 30V analog CMOS process in a 0.18μm technology for power management application

A versatile 30V analog CMOS process in a 0.18 μm technology node has been developed by using cost-effective and modular fashion. To reduce the thermal budget deep NWELL isolation is formed after CMOS well formation. The drain-extended (DE) CMOS from 7V to 30V shows very competitive trade-off performance between the breakdown voltage and the specific on-resistance. In addition, low 1/f noise of 5V CMOS can be obtained by pure gate oxide process.