Off-Line CV/CC ZVS Flyback Integrated Switcher IC with 750 V PowiGaN, Active Clamp Drive and Synchronous Rectification, Pairs With ClampZero Active Clamp IC
The InnoSwitch™4-CZ family of ICs partners with the ClampZero family of active clamp ICs to dramatically improve the efficiency of flyback power converters, particularly those requiring a compact form-factor. The InnoSwitch4-CZ family incorporates primary and secondary controllers and safety-rated feedback into a single IC.
The combination of InnoSwitch4-CZ with ClampZero greatly reduces system and primary switch losses, allowing for extremely high power densities. InnoSwitch4-CZ also incorporates multiple protection features including output overvoltage and over-current limiting, and over-temperature shutdown. Devices are available that support the common combinations of latching and auto-restart protection mode required by applications such as chargers, adapters, consumer electronics and industrial systems.
Highly Integrated, Compact Footprint
Zero voltage switching (ZVS) flyback controller with driver for ClampZeroTM (active clamp IC)
Robust 750 V PowiGaNTM primary switch
Steady-state switching frequency up to 140 kHz minimizes transformer size
Synchronous rectification driver and secondary-side sensing
Integrated FluxLinkTM, HIPOT-isolated, feedback link
Exceptional CV/CC accuracy, independent of external components
Adjustable accurate output current sense using external sense resistor
Up to 95% efficient
Less than 30 mW no-load consumption including line sense Advanced Protection / Safety Features
Open SR FET-gate detection
Fast input line UV/OV protection
Variable output voltage, constant current profiles