UCC28722
Features
- 1 < 50-m W No-Load Power
- Primary-Side Regulation (PSR) Eliminates Opto-
Coupler
- Dynamic BJT Drive
- ± 5% Voltage and Current Regulation Across Line and Load
- 80-k Hz Maximum Switching Frequency Enables
High-Power Density Charger Designs
- Quasi-Resonant Valley-Switching Operation for
Highest Overall Efficiency
- Wide VDD Range Allows Small Bias Capacitor
- Output Overvoltage, Low-Line, and Overcurrent
Protection Functions
- Programmable Cable pensation
- SOT23-6 Package
2 Applications
- USB-pliant Adapters and Chargers for Consumer Electronics
- Smart Phones
- Tablet puters
- Cameras
- Standby Supply for TVs and Desktops
- White Goods
3 Description
The UCC28722 flyback power supply controller provides isolated-output constant-voltage (CV) and constant-current (CC) output regulation without the use of an optical coupler. The device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.
Dynamic...
