230V/250W, Hi-η Sensorless Brushless DC Motor Drive with 30% Reduced Bulk Capacitor Reference Design
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Key Document


The TIDA-00472 is a discrete IGBT-based three-phase inverter for driving brushless DC (BLDC) motors rated up to 250 W, for example, used in cooker hoods, using a sensor-less, trapezoidal control method. The design provides software implementation for DC bus voltage ripple compensation resulting in 30% reduction in the DC bus capacitor requirement and reduced overall BOM cost. The cycle-by-cycle overcurrent protection feature protects the power stage from large current spikes and the board can work up to 65°C ambient.  This design has also been tested to pass EN55014 standards for conducted emissions, Surge and EFT.

  • 250W Mains Powered BLDC Motor Drive with Sensor-less Trapezoidal Control using InstaSPIN-BLDC
  • Software Implementation for DC Bus Ripple Compensation Resulting in 30 % Reduced DC Bus Capacitor
  • Current Sensing using Single Shunt on the DC Bus Return for Cycle-By-Cycle Current Limit and Protection
  • The High Efficient Circuit Board Enable Working up to 200W without heat sink up to 65 OC ambient temperature
  • Hardware design to meet surge, EFT and conducted emission as per EN55014
  • This Design is a Tested, Ready to Use Hardware and Software Platform for Drving High Voltage BLDC Motors

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ISO7421  Dual-channel, 1/1, 1-Mbps digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LMT87  ±2°C 2.7V to 5.5V analog output temperature sensor with -13.6 mV/°C gain  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
MSP430F5132  25 MHz MCU with 8KB Flash, 1KB SRAM, 10-bit ADC, comparator, DMA, 16-bit High Resolution timer  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
OPA374  Single 6.5MHz, 585uA, rail-to-rail I/O CMOS operational amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV704  150-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC27714  4-A, 600-V half bridge gate driver  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ISO7421 Download Download
LMT87 Download Download
MSP430F5132 Download -
Download -
Download Download
OPA374 Download Download
Download Download
TLV704 Download Download
UCC27714 Download -

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 5473 12 May 2016
Design files (6)
Title Type Size (KB) Date
ZIP 1426 02 Nov 2015
PDF 48 02 Nov 2015
PDF 376 02 Nov 2015
ZIP 1038 28 Sep 2015
PDF 806 28 Sep 2015
PDF 233 28 Sep 2015
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