Small Form-Factor Reinforced Isolated IGBT Gate Drive Reference Design for 3 Phase Inverter


Design files


The TIDA-00446 reference design consists of six reinforced isolated IGBT gate drivers along with dedicated gate drive power supplies. This compact reference design is intended to control IGBT’s in 3-phase inverters like AC drives, uninterruptible power supplies (UPS) and solar inverters. The design uses a reinforced isolated IGBT gate driver with DESAT feature and built-in miller clamp protection, enabling use of unipolar supply voltage for the gate drive. Open loop push pull topology based power supply for each gate driver provides flexibility in PCB routing. The push pull transformer driver used in TIDA-00446 operates at 420 khz which helps in reducing the size of the isolation transformer leading to compact power supply solution. Gate drive power supply can be disabled to facilitate safe torque off (STO).

  • Suited for low voltage drives (400 Vac and 690 Vac)
  • Integrated 2.5A source and 5A sink current suits driving IGBT modules with currents up to 50A
  • Built in miller clamp functionality enables use of unipolar supply voltage (+17 V) for driving IGBT
  • Built in protection functionalities
    • Short circuit protection through DESAT detection
    • Supply Undervoltage protection
  • Provision for separate Rg(ON) and Rg(OFF)
  • 8000 Vpk Reinforced Isolation
  • Very high CMTI of > 100 kV/us
  • Spread spectrum operation of transformer driver helps reduce EMI.
  • PWM and fault signals of gate drivers can be directly interfaced to controller (3.3V operation)
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDRIJ3.PDF (1110 K)

Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRIJ7.ZIP (1917 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRIJ6.PDF (2970 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Isolated gate drivers

ISO58515.7kVrms, 2.5A/5A single-channel isolated gate driver with active protection features

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS706150-mA, ultra-low-IQ, low-dropout voltage regulator with reverse current protection & enable

Data sheet: PDF | HTML
Transformer drivers

SN6505BLow-noise, 1-A, 420-kHz transformer driver with soft start for isolated power supplies

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Small Form-Factor Reinforced Isolated IGBT Gate Drive Design Guide (Rev. C) Jun. 23, 2017
White paper Circuit Board Insulation Design According to IEC60664 for Motor Drive Apps PDF | HTML Aug. 31, 2023
Application note Isolation Glossary (Rev. A) Sep. 19, 2017
White paper High-voltage reinforced isolation: Definitions and test methodologies Oct. 16, 2014

Related design resources

Reference designs

TIDA-00195 Isolated IGBT Gate Driver Evaluation Platform for 3-Phase Inverter System Reference Design TIDA-00199 Wide-Input Isolated IGBT Gate-Drive Fly-Buck Power Supply for Three-Phase Inverters Reference Design TIDA-00315 100/200Vac Input, 30W Isolated Power Supply Reference Design for Servo Drives

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