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reference designUCC28740-Q1 | Demoboard PMP41009 REV A

Texas Instruments UCC28740-Q1 | Demoboard PMP41009 REV A

Automotive ultra low standby, flyback controller with integrated HV startup and optocoupler feedback

Overview

TopologyFlyback Converter
Input voltage350-1000 V
Output 114 V

Description

This reference design provides isolated 14-V and 56-W outputs with a quasi-resonant flyback topology. The power supply can be powered from the 350-V to 1000-V DC input. This design uses cascode MOSFETs and flyback controller UCC28740-Q1. The line and load regulation are regulated to within ±1% precision. The peak efficiency is 84.6% at 1000-V input and 56-W output.

Features

  • Wide input range: 350-V to 1000-V DC
  • High-precision output voltage
  • Peak efficiency 84.6% at 1000-V input and 56-W output
  • Quasi-resonant mode controller improves EMI performance

Typical applications

  • Traction inverter HV to LV backup supply, HVAC compressor HV isolated power supply, PTC heater HV isolated power supply

More information

Products

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Data­sheet
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L(µH)
IR(A)
ISAT,10%(A)
RDC max.(Ω)
fres(MHz)
Version
SamplesAvailability & Sample
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7447462010
SPECWE-TI Radial Leaded Wire Wound Inductor, 1 µH, 8.5 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TI Radial Leaded Wire Wound Inductor
Inductance1 µH
Rated Current8.5 A
Saturation Current @ 10%8.5 A
DC Resistance0.015 Ω
Self Resonant Frequency140 MHz
VersionHeat Shrinking Tube 
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750345192
SPECFlyback Transformer, –, –
Simu­lation–
Availability
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Downloads–
Status Activei| Production is active. Expected lifetime: >10 years.
Product series Flyback Transformer
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