AC/DC Converter ICs ROHM Semiconductor AC/DC Converter ICs are designed with integrated FETs and pulse width modulation (PWM) for a variety of applications. These AC/DC converter ICs provide an ideal system for products with an electrical outlet. The AC/DC converter ICs feature auto-restart capability, 650V circuit start voltage, and low switching frequencies of 65kHz and 100kHz. These ROHM converter ICs are available in the more commonly used SOP8 SMD package. Typical applications include AC adapters, industrial equipment, and household appliances.