Reference design for reinforced isolation 3-phase inverter with current, voltage and temp protection


Design files


This reference design provides a three-phase inverter rated up to 10 kW designed using the reinforced isolated gate driver UCC21530, reinforced isolated amplifiers AMC1301 and AMC1311 and MCU TMS320F28027. Lower system cost is achieved by using the AMC1301 to measure motor current interfaced with internal ADC of MCU and use of bootstrap power supply for IGBT gate drivers. The inverter is designed to have protection against overload, short circuit, ground fault, DC bus undervoltage and overvoltage, and IGBT module over temperature.

  • Reinforced isolated inverter suited for 200-V to 690-V AC drives rated up to 10 kW
  • Simple yet effective gate driver with 4-A source, 6-A sink output current capability
  • Reinforced isolated amplifier with high bandwidth (> 200 kHz) for inverter current, DC bus voltage and IGBT module temperature measurement; enables use of internal ADC or MCU
  • Calibrated current measurement accuracy of ±0.5 % across temperature range from -25˚C to 85˚C
  • Protection against DC bus undervoltage, overvoltage, overload, ground fault and over-temperature
  • Bootstrap-based power supply for high-side gate driver reduces overall cost for power supply requirements
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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

TIDRM59B.PDF (755 K)

Detailed schematic diagram for design layout and components

TIDRM56B.PDF (105 K)

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

TIDRM55B.PDF (906 K)

Detailed overview of design layout for component placement

TIDRM57B.ZIP (2891 K)

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

TIDCC97B.ZIP (586 K)

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

TIDRM58B.PDF (3165 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Isolated gate drivers

UCC215305.7kVrms, 4A/6A dual-channel isolated gate driver with EN & DT pins in DWK pkg for IGBT/SiC F

Data sheet: PDF | HTML
Isolated gate drivers

UCC215405.7kVrms 4A/6A dual-channel isolated gate driver with dual inputs, DT pin & 8V UVLO in DW or DWK pkg

Data sheet: PDF | HTML
AND gates

SN74LVC1G111-ch, 3-input 1.65-V to 5.5-V 32 mA drive strength AND gate

Data sheet: PDF | HTML

TLC372Dual General Purpose LinCMOS™ Differential Comparator

Data sheet: PDF
Isolated amplifiers

AMC1301±250 mV-Input Precision Reinforced Isolated Amplifier for Current Sensing

Data sheet: PDF | HTML
Isolated amplifiers

AMC13112-V input, precision voltage sensing reinforced isolated amplifier

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

TLV1117800-mA, 15-V, linear voltage regulator

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

TLV704150-mA 24-V ultra-low-IQ low-dropout (LDO) voltage regulator

Data sheet: PDF | HTML
OR gates

SN74LVC1G321-ch, 2-input 1.65-V to 5.5-V 32-mA drive strength OR gate

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA320Precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Data sheet: PDF | HTML
Series voltage references

REF20333.3-V Vref, low-drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet: PDF | HTML

Start development

Design tools & simulation

Simulation model

TIDA-00366 Current Sensing Simulation — TIDM005.ZIP (126 K)

Simulation model

TIDA-00366 DC Link Voltage Sensing Simulation (Rev. A) — TIDM007A.ZIP (66 K)

Simulation model

TIDA-00366 Temperature Sensing Simulation (Rev. A) — TIDM006A.ZIP (66 K)

Technical documentation

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Type Title Date
* Design guide Reference Design for Reinforced Isolation Three-Phase Inverter With Current (Rev. C) Apr. 01, 2019
Application note Designing With the Improved TL431LI (Rev. A) Jun. 28, 2019
Technical article What’s next for Industry 4.0? The best new technologies shaping the future of smar PDF | HTML Nov. 07, 2016
Technical article How to reduce system cost in a three-phase IGBT-based inverter design PDF | HTML Aug. 08, 2016
Technical article Why is the cloud isolated? PDF | HTML Jul. 18, 2016

Related design resources

Hardware development

LAUNCHXL-F28027 C2000 Piccolo MCU F28027 LaunchPad™ development kit

Reference designs

TIDA-00199 Wide-Input Isolated IGBT Gate-Drive Fly-Buck Power Supply for Three-Phase Inverters Reference Design

Support & training

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