UCC28740
Features
- 1 Less than 10-m W No-Load Power Capability
- Optocoupled Feedback for CV, and
Primary-Side Regulation (PSR) for CC
- Enables ±1% Voltage Regulation and ±5%
Current Regulation Across Line and Load
- 700-V Startup Switch
- 100-k Hz Maximum Switching Frequency Enables
High-Power-Density Charger Designs
- Resonant-Ring Valley-Switching Operation for
Highest Overall Efficiency
- Frequency Dithering to Ease EMI pliance
- Clamped Gate-Drive Output for MOSFET
- Overvoltage, Low-Line, and Overcurrent
Protection Functions
- SOIC-7 Package
- Create a Custom Design Using the UCC28740
With the WEBENCH® Power Designer
2 Applications
- USB-pliant Adapters and Chargers for Consumer Electronics
- Smart Phones
- Tablet puters
- Cameras
- Standby Supply for TV and Desktop
- White Goods
3 Description
The UCC28740 isolated-flyback power-supply controller provides Constant-Voltage (CV) using an optical coupler to improve transient response to largeload steps. Constant-Current (CC) regulation is...
