Am designing a solar pv inverter. I need to bias isolated gate driver, two microcontrollers and sigma delta modulators.The gate drivers are to have a bias voltage of 15V and 3.3V. The microcontrollers are to get biased with 3.3V. The sigma delta modulators are to get biased with 15V and 3.3V. With your line of power management ICs, which isolated controllers would be best for my design for an input voltage of 40V to 75V?