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DATA SHEET
UCC28780 High Frequency Active Clamp Flyback Controller
1 Features
- Full and Partial Zero Voltage Switching (ZVS) of Primary FET with Adaptive Control
- Programmable Timing for External Si or GaN FETs
- High Switching Frequency up to 1 MHz
- Programmable Adaptive Burst Control and Standby Mode for Light-Load Efficiency with Low Output Ripple and Audible Noise Mitigation
- Brownout Detection without Direct Line Sensing
- Accurate Programmable Over-Power Protection (OPP) to Support Peak Power Mode
- Fault Protections: Over-Temperature, Output Over-Voltage, Output Short-Circuit, Over-Current, and Pin Fault
- Direct Interface with Optocoupler Based Feedback Allows for Dynamically Scalable Output Voltage
- Internal Soft Start
- NTC Thermistor Interface with External Enable
2 Applications
- High-Density AC-to-DC Adapters for Notebook, Tablet, TV, Set-Top Box and Printer
- USB Power Delivery, Direct and Fast Mobile Chargers
- AC-to-DC or DC-to-DC Auxiliary Power Supply
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