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UC1861-1868 UC2861-2868 UC3861-3868
Resonant-Mode Power Supply Controllers
FEATURES DESCRIPTION
• Controls Zero Current Switched (ZCS) The UC1861-1868 family of ICs is optimized for the control of Zero Curor Zero
Voltage Switched (ZVS) rent Switched and Zero
Voltage Switched quasi-resonant converters.
DifQuasi-Resonant Converters ferences between members of this device family result from the various combinations of UVLO thresholds and output options.
Additionally, the • Zero-Crossing Terminated One-Shot one-shot pulse steering logic is configured to program either on-time for Timer ZCS systems (UC1865-1868), or off-time for ZVS applications (UC1861• Precision 1%, Soft-S...