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reference designLM5160 | Demoboard TIDA-00199

Texas Instruments LM5160 | Demoboard TIDA-00199

Wide-Input Isolated IGBT Gate-Drive Fly-Buck Power Supply for Three-Phase Inverters - Ref Design

Overview

TopologyFlyBuck (Double Buck)
Input voltage20-30 V
Output 18 V / 0.1 A
Output 2-15 V / 0.1 A
Output 315 V / 0.1 A
Output 4-8 V / 0.3 A
Output 5-8 V / 0.1 A
Output 615 V / 0.3 A
IC revisionA

Description

This reference design provides isolated positive and negative voltage rails required for Insulated Gate Bipolar Transistor (IGBT) gate drivers from a single 24-volt DC input supply. Utilizing a Fly-Buck™ control topology, this reference design uses a single transformer for generating power rails for all three arms of the 3-phase inverter. It uses primary-side regulation and can achieve good cross regulation without opto-coupler feedback or an auxiliary winding. The isolated outputs are generated through the coupled windings of the transformer. The voltage rails for all the high-side IGBTs are individually isolated, whereas the voltage rails for all low-side IGBTs are combined.

Features

  • Isolated power supply with 24V±20% input range that supports 6 IGBT gate drivers for 3-phase inverter (each arm in half-bridge configuration)
  • Low-ripple (<200mV) bias outputs (+15V & -8V) with output power of 2.3W for each IGBT of the 3-phase inverter
  • Fly-Buck topology provides easy-to-design multi-output isolated power supply solution with primary side regulation
  • Peak efficiency of 82% at balanced full-load
  • Output capacitors rated to support up to 6A peak gate drive current

Typical applications

  • Variable Speed AC and DC Drives
  • UPS Systems
  • Industrial Inverters and Solar Inverters
  • IGBT Based High-Voltage DC (HVDC) Systems
  • Servo Drives

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
VOut3(V)
IOut3(mA)
VOut4(V)
IOut4(mA)
Vbuck(V)
L(µH)
NPRI : NSEC
LS(nH)
VT(V (AC))
fswitch(kHz)
Mount
L(mm)
W(mm)
H(mm)
Samples
750315038
WE-IBTI Isolated Buck Transformers, 7 - 26 V (DC), 23 V
Simu­lation
Downloads9 files

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CAD files ZIP

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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 7 - 26 V (DC)
Output Voltage 123 V
Output Current 1300 mA
Output Voltage 223 V
Output Current 2100 mA
Output Voltage 323 V
Output Current 3100 mA
Output Voltage 423 V
Output Current 4100 mA
Buck Voltage10.5 V
Inductance36.5 µH
Turns Ratio1:2.33:2.33:2.33:2.33 
Leakage Inductance300 nH
Insulation Test Voltage3600 V (AC)
Switching Frequency 250 - 600
MountTHT 
Length23.36 mm
Width23.88 mm
Height24.14 mm