GP1605 is a part of the Taiwan Semiconductor, which is a company that produces integrated circuits and related products. GP1605 is a high efficiency Off Line Quasi-Resonant (QR) DC/DC converter, targeted for Clamshell, Adapter, AIO, and Smartphone applications. It is an integrated solution which includes a 650V/75mO MOSFET, current mode PWM control IC, over voltage and under voltage protection, thermal shut down protection, and EVA and Halo protective functions. The GP1605 device supports low component count and reduced board mounting area, while providing no-load, low-loss, stable operation during all load conditions.