POWER INTEGRATIONS INN4577F-H342-TL

The InnoSwitch™4-Pro family of ICs substantially reduces the size of power adapters. Switching frequency of up to 140 kHz and a very high level of integration combine to reduce the component volume and PCB board area required by a typical adapter implementation. InnoSwitch4-Pro interfaces seamlessly with the ClampZero family of active clamp ICs to achieve zero voltage switching in both continuous and discontinuous conduction modes. Alternatively, InnoSwich4-Pro can operate in QR mode using an RCD clamp with the appropriated part number choice. Overall system efficiency exceeds 95%, allowing designers to eliminate heat sinks, spreaders and potting materials for thermal management, further reducing size, component cost and manufacturing complexity. The integration of PowiGaN primary switch and controller, isolated feedback and secondary controller with an I²C interface simplifies the development and manufacturing of fully programmable, highly efficient power supplies.

• Quasi-Resonant (QR) or zero voltage switching (ZVS) flyback controller when paired with ClampZeroTM (active clamp IC)
• Unique control algorithm to enable ZVS in both DCM and CCM
• 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
• Drives low-cost N-channel FET series load switch
• Integrated 3.6 V supply for external MCU
• Precise CV, CC, CP Control
• Dynamic adjustment of power supply voltage and current
• Selectable DCM-only operation to reduce SR FET voltage stress
• Optimized command set to reduce I²C traffic
• Telemetry for power supply status and fault monitoring
• Efficiency up to 95%
• Less than 30 mW no-load including line sense and MCU
• Series load switch short-circuit protection
• Disable output fault response
• Fast input line UV/OV protection
• Programmable Output OV/UV fault detection and response
• Open SR FET gate detection
• Hysteretic thermal shutdown
• Programmable watchdog timer for system faults
• Reinforced isolation > 4000 VAC
• 100% production HIPOT testing
• UL1577 isolation voltage 4000 VAC (max) and TUV (EN62368) and CQC (G4943.1) safety approved
• Halogen free and RoHS compliant

• High density power adapters
• Multiprotocol adapters including USB PD + PPS, QC, VOOC, VFC, SCP
• Direct-charge mobile device chargers
• Multi-chemistry tool and general purpose battery chargers
• Adjustable CV and CC LED ballast