The INN4176C-H188 from Power Integrations is an Offline CV/CC ZVS Flyback Switcher IC that is suitable for use in high-density flyback designs up to 220 W, high-efficiency CV/CC power supplies, and high-efficiency USB PD adapters. It requires an input voltage of 85-264 V. This IC delivers an output power of 180 W (adapter) and 200 W (open-frame) and has an efficiency of up to 95%. It can dramatically improve the efficiency of flyback power converters, particularly those requiring a compact form-factor. This switch IC consists of zero voltage switching (ZVS)-based primary and secondary controllers with a driver, a PowiGaN power switch, and safety-related feedback FluxLink) mechanism in a single package. It uses a unique control algorithm that enables ZVS in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), and has a switching frequency of up to 155 kHz. 

This flyback switcher IC provides synchronous rectification with a high accuracy, independent of external components. It also allows the output current to be adjusted using an external sense resistor while maintaining minimal losses due to switching. This IC includes multiple protection circuitries to prevent over-voltage, over-current, and over-temperature-related damages. Other protection features are also available as options – auto-restart or latching, and multiple under-voltage fault thresholds, which contribute to enhanced safety. This RoHS-compliant switcher IC is available in a surface-mount package that measures 13.43 x 9.40 mm.