Circuit and method for generating body bias voltage for an integrated circuit

摘要

A circuit includes a PMOS body bias circuit including a PMOS charge pump for generating a positive supply voltage, a PMOS reference voltage generator for providing a PMOS reference voltage, and a PMOS linear voltage regulator circuit for generating a PMOS body bias voltage upon receiving the positive supply voltage and the PMOS reference voltage. The circuit also includes a NMOS body bias circuit including a NMOS charge pump for generating a negative supply voltage, a NMOS reference voltage generator for providing a NMOS reference voltage, and a NMOS linear voltage regulator circuit for generating a NMOS body bias voltage upon receiving the negative supply voltage and the NMOS reference voltage. The PMOS body bias voltage and the NMOS body bias voltage drive bulk of PMOS and NMOS devices in the integrated circuit.