UCC28634 Overview
The UCC2863x targets high-power, primary-side regulated flyback converters. The ability to operate in both CCM and DCM make the device suitable for applications with a wide power range. The peak power mode allows transient peak power delivery up to 200% of nominal rating, with only a 25% peak current increase, maximizing transformer utilization.
UCC28634 Key Features
- 1 High-Power, Primary-Side CV/CC Regulation
- Continuous Conduction Mode (CCM) and
- Built-In 700-V Start-Up Current Source
- Active X-Capacitor Discharge (UCC28630 and
- Adjustable Constant-Current (CC) Mode Limiting
- High Gate Drive Current 1-A Source and 2-A Sink
- Low Power Modes for <30-mW System Standby
- Best-In-Class Light Load (10%) Efficiency >85%
- PSR design with no opto-coupler
- can meet high
UCC28634 Applications
- AC-DC Adapters for Notebook, Game Consoles, Printers
- Open Frame SMPS for Industrial, Printer, White Goods, LCD Monitors
- Energy Efficient AC-DC Supplies for Nominal Power 10-W to 65-W, (with up to 200% transient peak power) Simplified Schematic