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reference designUCC28740 | Demoboard PMP41031

Texas Instruments UCC28740 | Demoboard PMP41031

350-V to 1500-V input, 150-W isolated auxiliary power reference design

Overview

TopologyFlyback Converter
Input voltage350-1500 V
Output 115 V / 3 A
Output 28 V / 2 A
Output 315 V / 0.8 A
Output 424 V / 3 A
IC revisionE1

Description

This reference design provides four isolated outputs of 24 V,15 V, –15 V, 8 V and maximum 150-W output with two-switch flyback topology. The power supply can be powered from 350-V to 1500-V DC input. This design uses the valley switching UCC28740 flyback controller . The design achieves 89.11% efficiency at 600-V input and 86.17% efficiency at 1500-V input, full-load condition.

Features

  • Wide input range from 350-V to 1500-V DC
  • Two-switch flyback topology recycles leakage energy
  • Quasi-resonant mode controller improves efficiency
  • Less voltage stress on the primary switch
  • Peak efficiency of 89.11% at 600-V input and 150-W output
  • 86.17% efficiency at 1500-V input and 150-W output

Typical applications

  • Central inverter; DC fast charging station; Fuel cell inverter; Power conversion system (PCS); Single phase string inverter; Three Phase String Inverter

More information

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760301302
SPECWE-GDTI Gate-Drive-Transformer, 1:1, 750 µH
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-GDTI Gate-Drive-Transformer
Turns Ratio1:1 
Inductance750 µH
Voltage-µSecond102 µVs
Insulation Test Voltage2500 V (AC)
Interwinding Capacitance11 pF
Leakage Inductance4 µH
SizeEP7 
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750345142
SPECFlyback Transformer, –, –
Availability
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Status Activei| Production is active. Expected lifetime: >10 years.
Product series Flyback Transformer
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