Infineon ICE2HS01G is a high performance resonant mode controller designed especially for high efficiency half-bridge or full-bridge LLC resonant converter with synchronous rectification at the secondary side. With its new driving techniques, the synchronous rectification can be realized for LLC converter operated with secondary switching current in both CCM and DCM conditions. No special synchronous rectification controller IC is needed at the secondary side. The maximum switching frequency is supported up to 1MHz. Except the patented SR driving techniques, this IC provides very flexible design and integrates full protection functions as well. It"s adjustable for maximum/minimum switching frequency, soft-start time and frequency, dead time between primary switches, turn-on and turn-off delay for secondary SR MOSFETs. The integrated protections include input voltage brownout, primary three-levels over current, secondary over load protection and no-load regulation.
Summary of Features:
Resonant mode controller for Half-bridge LLC resonant converter with synchronous rectification drives
20-pin DSO package
30kHz to 1MHz switching frequency
Adjustable minimum switching frequency with high accuracy
50% duty cycle for both primary and secondary gate drives
Adjustable dead time with high accuracy
Driving signal for synchronous rectification which support full operation of Half-bridge LLC resonant converter
Internal and External disable function for synchronous rectification
Mains input under voltage protection with adjustable hysteresis
Three levels of overcurrent protection for enhanced dynamic performance
Open-loop/over load protection with adjustable blanking time and restart time
Adjustable over-temperature protection with latch-off
External latch-off enable pin
Benefits:
LLC can designed at resonant frequency with highest achievable efficiency
Reliable operation of SR make design easy
Control SR from primary controller save SR IC with low system cost
Tight tolerance control enable lower cost for mass production
Various protections enable easy system design with short design cycle
