Description
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2 Description
UCD3138PFCEVM-026 together with UCD3138CC64EVM-030 is an EVM of PFC pre-regulator with digital
control using UCD3138 device in boost converter topology and in the application of single-phase AC input.
UCD3138 device is located on the board of UCD3138CC64EVM-030. UCD3138CC64EVM-030 is a
daughter card and serves all PFC required control functions with preloaded single-phase boost PFC
firmware. UCD3138PFCEVM-026 accepts universal AC line input from 90 V
AC
to 264 V
AC
, and outputs
nominal 390 V
DC
with full load output power 360 W, or full output current 0.92 A.
2.1 Typical Applications
• Single-Phase Universal AC Line Power Factor Correction Pre-Regulator
• Servers
• Telecommunication Systems
2.2 Features
• Digitally Controlled PFC Pre-Regulator
• Universal AC Line Input from 90 V
AC
to 264 V
AC
with AC Line Frequency 47 Hz to 63 Hz
• Regulated Output 390 V
DC
with Output from No-Load to Full-Load
• Full-Load Power 360 W, or full-Load Current 0.92 A
• High Power Factor Close to 0.999 and Low THD Below 5% in Most Operation Conditions
• High Efficiency
• Protection:
– Over Voltage
– Over Current
– Brownout
– Power-On Inrush Current
• Test Points to Facilitate Device and Topology Evaluation
• Re-Configurable to Dual-Phase Interleaved PFC or Bridgeless PFC (please contact TI for detail)
4
Digitally Controlled Single-Phase PFC Pre-Regulator SLUU885B–March 2012–Revised July 2012
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Copyright © 2012, Texas Instruments Incorporated
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