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. SLUS431A – MAY 2000 – REVISED DECEMBER 2000 Operates with Secondary–Side PWM
Multi-Mode Overcurrent Protection with Control
Isolated PWM Command through a Pulse
Transformer
Initial Free-Running Soft-Startup with
Duty-Cycle Clamping
Up to 400-kHz Synchronizable Switching
Frequency
High-Current FET Drive (1.5-A Sink, 0.75-A
Source) Restart, Latching, or Cycle-by-Cycle
Current Limiting
Programmable Volt-Second Clamp for
Transformer Reset
Undervoltage Lockout with 2-V Hysteresis
Low-Current Startup with Optional
Disconnect
Programmable Overvoltage and
Undervoltage Protection
8–pin Version Also Available (UCC3960)
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