InnoSwitch4-CZ Family Off-Line CV/CC ZVS Flyback Integrated Switcher IC with 750 V PowiGaN, Active Clamp Drive and Synchronous Rectification VBUS Product Highlights ClampZero Highly Integrated, Compact Footprint Zero voltage switching (ZVS) flyback controller with driver for TM RTN ClampZero (active clamp IC) Unique control algorithm to enable ZVS in both DCM and CCM TM Robust 750 V PowiGaN primary switch D V Steady-state switching frequency up to 140 kHz minimizes InnoSwitch4-CZ transformer size VOUT Primary Switch and Controller Synchronous rectification driver and secondary-side sensing S HSD BPP TM Secondary Integrated FluxLink , HIPOT-isolated, feedback link Control IC PI-9288-122220 Exceptional CV/CC accuracy, independent of external components Adjustable accurate output current sense using external sense resistor Figure 1. Typical Application schematic EcoSmart Energy Efficient 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 Optional Features Variable output voltage, constant current profiles Auto-restart or latching fault response for output OVP/UVP Multiple output UV fault thresholds Figure 2. High Creepage, Safety-Compliant InSOP-24D Package. Latching or hysteretic primary over-temperature protection Full Safety and Regulatory Compliance Reinforced isolation >4000 VAC 100% production HIPOT testing UL1577 and TUV (EN60950) safety approved Output Power Table Excellent noise immunity enables designs that achieve class A performance criteria for EN61000-4 suite EN61000-4-2, 4-3 85-264 VAC 385 VDC (PFC Input) (30 V/m), 4-4, 4-5, 4-6, 4-8 (100 A/m) and 4-9 (1000 A/m) 3 Product Open Open 1 1 Adapter Adapter 2 2 Green Package Frame Frame Halogen free and RoHS compliant INN4073C 60 W 70 W 75 W 80 W Applications INN4074C 75 W 85 W 95 W 100 W High density flyback designs up to 110 W INN4075C 80 W 90 W 105 W 110 W High efficiency CV/CC power supplies High efficiency USB PD adapters Table 1. Output Power Table. Notes: Description 1. Minimum continuous power in a typical non-ventilated enclosed typical size adapter measured at 40 C ambient. Max output power is dependent on the The InnoSwitch4-CZ family of ICs partners with the ClampZero family design. With condition that package temperature must be < 125 C. of active clamp ICs to dramatically improve the efficiency of flyback 2. Minimum peak power capability. power converters, particularly those requiring a compact form-factor. 3. Package: InSOP-24D. 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. www.power.com May 2021 This Product is Covered by Patents and/or Pending Patent Applications. FW SR BPS FB GND ISInnoSwitch4-CZ D V BPP BPP REGULATOR LINE INTERFACE CONTROL LOGIC From Secondary Contoller RECEIVER CONTROLLER THERMAL SHUTDOWN BPP SenseFET HSD Power CONTROL Switch DRIVER PI-9263-121820 S HSD Figure 3. Primary Controller Block Diagram. FW SR BPS VOUT VO REGULATOR V BPS VO BPS UV DETECTOR FW V ALLEY HANDSHAKE /LATCH-OFF SECONDARY FB CONTROLLER LATCH VC INH TRL COMP INH FW V ALLEY V REF SEC REQ FluxLink FEEDBACK DRIVER TS MAX COMP IC OSCILLATOR TRL tOFF MIN /TIMER tSECINHMAX V IS PI-9264-121820 GND IS Figure 4. Secondary Controller Block Diagram. 2 Rev. F 05/21 www.power.com + +