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reference designLM5017 | Demoboard PMP7798.1

Texas Instruments LM5017 | Demoboard PMP7798.1

Wide VIN FlyBuck™ Power Converter with Two Isolated Bias Supplies + One Non-Isolated Power

Overview

TopologyFlyBuck (Double Buck)
Input voltage36-75 V
Output 110 V / 0.04 A
Output 25 V / 0.08 A
Output 310 V / 0.12 A

Description

Based on the Wide VIN COT Sync Buck regulator LM5017, this FlyBuck circuit provides excellent regulation for two isolated outputs and one non-isolated output. Compared with a conventional Flyback circuit, this design features a smaller board size and minimized BOM without the need for an optocoupler. This design is well suited for applications which need bias power. Additional output voltage versions of this board are available: see PMP7798.2 and PMP7798.3

Features

  • 36V to 75V Input
  • Primary side output: 10V output at 40mA
  • Secondary side output 1: 5V output at 80mA
  • Secondary side output 2: 10V output at 120mA
  • This fully-functional evaluation board is supported with design files, a demo, and an application note

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
Vbuck(V)
L(µH)
NPRI : NSEC
ISAT(mA)
LS(µH)
VT(V (AC))
fswitch(kHz)
Mount
L(mm)
W(mm)
H(mm)
Samples
750312924
WE-IBTI Isolated Buck Transformers, 36 - 75 V (DC), 10 V
Simu­lation
Downloads9 files

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CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-IBTI Isolated Buck Transformers
Input Voltage 36 - 75 V (DC)
Output Voltage 110 V
Output Current 1120 mA
Output Voltage 25 V
Output Current 280 mA
Buck Voltage10 V
Inductance26 µH
Turns Ratio2:2:1 
Saturation Current550 mA
Leakage Inductance1 µH
Insulation Test Voltage1500 V (AC)
Switching Frequency 750
MountSMT 
Length8.35 mm
Width9.5 mm
Height6.35 mm