The BD7693FJ from ROHM Semiconductor is a Power Factor Correction Controller IC that is designed for AC/DC supplies and other components that require power factor improvement. This PMIC requires an input voltage of 10 - 38 V. It operates based on the boundary conduction mode (BCM) mechanism and uses auxiliary winding to enable zero current detection (ZCD), thereby reducing both switching-related losses and noise. This controller IC integrates an efficient MOSFET to provide a stable gate drive operation and consists of a circuit that lowers total harmonics distortion (THD) to improve system performance. It consists of a soft-start function, under-voltage lockout (UVLO), and a short-circuit protection from error amplifier to prevent false trigger and over-current-related damages.
The BD7693FJ is available in a surface-mount package that measures 4.9 x 6.0 x 1.65 mm and is ideal for lighting equipment, AC adapter, TV, and refrigerator applications.