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SLUUBQ8B – August 2017 – Revised January 2017
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Copyright © 2017, Texas Instruments Incorporated
Using the UCC25630-1EVM-291
User's Guide
SLUUBQ8B – August 2017 – Revised January 2017
Using the UCC25630-1EVM-291
1
Introduction
This EVM, UCC25630-1EVM-291, is used to help evaluate the UCC256301 LLC control device in digital
TV SMPS, AC-DC power adapter, LED lighting, etc. applications and then to aid their design. The EVM is
a standalone LLC resonant half-bridge DC-DC power converter. The EVM, UCC25630-1EVM-291, can be
used as it is delivered without additional work to evaluate an LLC resonant half-bridge DC-DC converter.
This user’s guide provides basic evaluation instruction from a viewpoint of system operation in standalone
LLC resonant half-bridge DC-DC power converter.
2
Description
UCC25630-1EVM-291 is an EVM for an LLC resonant half-bridge DC-DC power converter with LLC
controller UCC256301. UCC25630-1EVM-291 accepts DC line input from 340 VDC to 410 VDC, AC input
voltage from 85 VAC to 264 VAC, and a nominal output of 12 VDC with a full-load output power of 120 W,
or a full output current of 10 A.
NOTE:
This EVM does not have an input fuse, and relies on an input current limit from its input
voltage source.
2.1
Typical Applications
•
Digital TV SMPS
•
AC-DC Power Adapters
•
Enterprise Server Applications
•
LED Lighting Applications
2.2
Features
•
Hybrid Hysteretic Controlled LLC Resonant Half-Bridge DC-DC Power Conversion
•
DC Line Input from 340 VDC to 410 VDC
•
AC Input Voltage from 85 VDC to 264 VAC
•
Regulated 12-VDC Output, from No-Load to Full-Load
•
Full-Load Power of 120 W, or Full-Load Current of 10 A
•
High Efficiency
•
Optimized Low Power Features Enable Extremely Low Standby Power
•
Advanced Burst Mode with Adaptive Threshold
•
Improved Capacitive Region Avoidance Scheme
•
Adaptive Dead-Time
•
X-Capacitor Discharge
•
Over Temperature, Output Over Voltage, and Three Level Over Current Protections
•
Test Points to Facilitate Device and Topology Evaluation