UCC38050 Overview
The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring pliance with IEC 1000-3-2 harmonic reduction standard. The controllers are designed for a boost preregulator operating in transition mode (also referred to as boundary-conduction mode or critical conduction-mode operation).
UCC38050 Key Features
- 1 Transition Mode PFC Controller for Low Implementation Cost
- Industry Pin patibility With Improved Feature Set
- Improved Transient Response With Slew-Rate parator
- Zero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load Conditions
- Accurate Internal VREF for Tight Output Regulation
- Two UVLO Options
- OVP, Open-Feedback Protection, and Enable
- ±750-mA Peak Gate Drive Current
- Low Start-Up and Operating Currents
- Lead (Pb)-Free Packages
UCC38050 Applications
- Single-Stage PFC Flyback Converters for Lighting and Motor Drives
- Switch-Mode Power Supplies for Desktops, Monitors, TVs, and Set Top Boxes (STBs)