Description
2.1
Features
UCC29950EVM-631 features include:
•
AC Input Range 90 V
AC
to 264 V
AC
•
DC Output of 12 V, 25 A
•
A CCM Boost Power Factor Correction Input Stage for High-Power Factor and High Efficiency
•
An LLC Output Stage for High Efficiency
•
Low Start-Up Current, with Integrated High-Voltage Start-Up Control
•
On/Off Control of PFC Stage and PFC / LLC Stages
•
Current Sense Inputs for PFC / LLC Overload Protection
•
Line Brownout Protection
•
PFC Bus Over-Voltage and Under-Voltage Protection
•
X-Cap Discharge Function for Reduced System Standby Power Consumption
•
Three Level LLC Over-Current Protection for Loads with High-Peak Power Requirements
•
Short Circuit Protection
•
Over Temperature Protection
•
Operation in Self Bias or Aux Bias Modes
CAUTION
High voltage levels are present on the evaluation module whenever it is
energized. Proper precautions must be taken when working with the EVM. The
large bulk capacitor, C6, and the output capacitors C17, C20, C21, C22, C23,
C24, C20 and C12, must be completely discharged before the EVM can be
handled. Serious injury can occur if proper safety precautions are not followed.
2.2
Typical Applications
The UCC29950 is suited for use in mid-to-high power off-line converters. It is simple to use and has a low-
external component count with extensive fault protection features.
•
Televisions
•
High Efficiency AC-to-DC server power supplies
•
High Density Adapters
•
80+ SILVER PC Silver Box
•
Gaming
•
Audio
•
Lighting Drivers
•
Industrial Power
3
SLUUB69A – March 2015 – Revised March 2015
Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module
Copyright © 2015, Texas Instruments Incorporated