1kW, Compact, 97.5% Efficiency, Digital PFC Reference Design for Telecom and Server PSU with E-Meter
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Key Document


TIDA-00707 is a 1-kW, compact (100mmX80mm) power factor converter (PFC) designed for telecom, server, and industrial power supplies. This reference design is a continuous conduction mode boost converter, implemented using a UCD3138A Digital Power Supply controller with all protections built-in. Hardware is designed and tested to pass conducted emissions, surge, and EFT (as per EN55014) requirements.

This reference design provides a ready platform of front-end PFC to address various power supplies up to 1 kW,  Improves overall system performance lower bus capacitance, lower RMS currents, and front-end protections. It meets stringent current THD and power factor norms and protects from output overcurrent, overvoltage, and undervoltage conditions.

  • Wide Operating Input Range: 195-V to 270-VAC
  • Designed to Drive Wide Range of Downstream DC/DC Converters and Inverter-Fed Motors up to 1 kW
  • High Power Factor > 0.99 and < 5% THD From Medium-to-Full Load (50% to 100%); Meets Current THD Regulations as per IEC 61000-3-2
  • High Efficiency of > 97% at Full Load Over Entire Operating Voltage Range
  • PFC Converter designed with a simple, small PCB form factor (100 x 82mm)

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ISO7321C  Low-power, dual-channel, 1/1, 25-Mbps digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
OPA2376  Dual, Precision, Low Noise, Low Quiescent Current Operational Amplifier   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV704  150-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC27517A  4-A/4-A single-channel gate driver with 5-V UVLO and negative input voltage handling  Gate drivers  Sample & Buy Not Available
UCD3138A  UCD3138A Highly Integrated Digital Controller for Isolated Power  Digital power ICs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ISO7321C Download Download
OPA2376 Download Download
Download Download
Download -
TLV704 Download Download
UCC27517A Download
UCD3138A Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 3188 24 Oct 2016
Design files (6)
Title Type Size (KB) Date
ZIP 2614 10 Mar 2016
PDF 236 10 Mar 2016
ZIP 267 10 Mar 2016
PDF 3297 10 Mar 2016
PDF 159 10 Mar 2016
PDF 632 10 Mar 2016
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
230V, 900W, PFC with 98% Efficiency for Inverter Fed Drives Reference Design  TIDA-00443  Reference design 

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