UCC28740 Overview
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 acplished through Primary-Side Regulation (PSR) techniques. This device processes information from opto-coupled feedback and an auxiliary flyback winding for precise high-performance control of output voltage and current.
UCC28740 Key Features
- 1 Less than 10-mW No-Load Power Capability
- Optocoupled Feedback for CV, and
- Enables ±1% Voltage Regulation and ±5%
- 700-V Startup Switch
- 100-kHz Maximum Switching Frequency Enables
- Frequency Dithering to Ease EMI pliance
- Clamped Gate-Drive Output for MOSFET
- Overvoltage, Low-Line, and Overcurrent
- SOIC-7 Package
- Create a Custom Design Using the UCC28740
UCC28740 Applications
- USB-pliant Adapters and Chargers for Consumer Electronics