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reference designLM5160 | Demoboard PMP10532

Texas Instruments LM5160 | Demoboard PMP10532

Isolated Tri-output Fly-Buck Power Supply for Industrial PLC Applications - Reference Design

Overview

TopologyFlyback Converter
Input voltage19-30 V
Output 1-15 V / 0.2 A
Output 25 V / 1 A
Output 315 V / 0.2 A
IC revision1

Description

The PMP10532 reference design is an isolated Fly-Buck power supply for industrial applications. It takes 24V nominal input and provides three isolated outputs: +5V@1A and +/-15V@200mA. The design is suitable for providing isolated power supply to MCU and control circuits and positive/negative bias to Op Amps in PLC applications. The cross regulation of each output over line and load variation maintains about +/-5% tolerance, and the input voltage range of the supply is from 19V to 30V. The design features the LM5160 synchronous buck converter configured as a Fly-Buck regulator. The LM5160 has a wide Vin range of 4.5V to 65V and 1.5A output current capability with integrated switch FETs. It employs the Constant On-Time (COT) control scheme suitable for the Fly-Buck. With the benefit of primary side regulation, the Fly-Buck converter makes a compact and cost effective solution for multiple isolated output power supply without the opto-coupler feedback.

Features

Three isolated outputs, +5V@1A and +/-15V@200mA, are ideal for PLC and industrial applications

  • Fly-Buck converter design, primary side regulation
  • Compact solution for multiple isolated output supplies
  • 19V to 30V input voltage range, +/-5% Vout cross regulation
  • LM5160 sync buck regulator, up to 65V wide Vin range, 1.5A capability
  • Constant On Time control, no loop compensation and fast transient response
  • This circuit board is tested, and the design files and test report are included.

More information

Parts approved by Texas Instruments

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Data­sheet
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Status
Product series
VIN
VOut1(V)
IOut1(A)
VOut2(V)
IOut2(A)
VOut3(V)
IOut3(A)
Vbuck(V)
L(µH)
NPRI : NSEC
ISAT(A)
LS(µH)
VT(V (AC))
fswitch(kHz)
Mount
L(mm)
W(mm)
H(mm)
SamplesAvailability & Sample
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750315039
SPECWE-IBTI Isolated Buck Transformers, 19 - 30 V (DC), 5 V
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-IBTI Isolated Buck Transformers
Input Voltage 19 - 30 V (DC)
Output Voltage 15 V
Output Current 11 A
Output Voltage 215 V
Output Current 20.2 A
Output Voltage 315 V
Output Current 30.2 A
Buck Voltage7.65 V
Inductance40 µH
Turns Ratio1.43:1:2.86:2.86 
Saturation Current1.8 A
Leakage Inductance0.3 µH
Insulation Test Voltage1500 V (AC)
Switching Frequency 250
MountSMT 
Length23.11 mm
Width29.08 mm
Height11.43 mm
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