18V/1kW, 160A Peak, >98% Efficient, High Power Density Brushless Motor Drive Reference Design

(ACTIVE) TIDA-00774

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Key Document

Description

The TIDA-00774 is a 1kW drive for a three-phase brushless DC (BLDC) motor in power tools operating from a 5-cell Li-ion battery with a voltage up to 21 V. The design is a 65mm x 60mm compact drive, implementing sensor-based trapezoidal control. The design takes advantage of TI's MOSFET Power Block technology, which integrates two FETs in half-bridge configuration into a single SON 5x6 package, enabling very high power density. The design uses two Power Blocks in parallel and delivers 50-ARMS continuous (120-A peak for 3 second, 160-A peak for 1 second) winding current. The MOSFET power block with minimum parasitic inductance and the current controlled gate driver with slew rate control helps in effective MOSFET paralleling and reduces switching spikes. The current sensing is done by monitoring MOSFET VDS. The board provides cycle by cycle over current and short circuit protection.

Features
  • Operates at voltage ranging from 6-V to 21-V (5s li-ion battery) delivering 50-ARMS continuous (120A peak for 3s, 160-A peak for 1s) winding current 
  • Inverter drive efficiency > 98.5%
  • Current sensing by monitoring and amplifying the VDS of MOSFET
  • Effective MOSFET paralleling with excellent dynamic current sharing
  • 18V/680W, 33 A RMS support without heat sink
  • Cycle-by-cycle overcurrent and short circuit protection by VDS sensing

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (5)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD88584Q5DC  40 V Half-Bridge NexFET™ Power Block  Power MOSFET  Sample & Buy Not Available
DRV8323  60V Three-Phase Smart Gate Driver With Three Current Shunt Amplifiers  Brushless DC (BLDC) Drivers  Sample & Buy View Design Kits & Evaluation Modules
LMT87  2.7V-Capable, 10 uA Analog Output Temperature Sensor in SC70 and TO-92  Temperature Sensors  Sample & Buy View Design Kits & Evaluation Modules
MSP430F5132  MSP430F51x2 Mixed Signal Microcontroller  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
TPS54061  Wide Input 60V, 200mA Synchronous Step-Down DC-DC Converter with Low IQ  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 6328 09 Nov 2016 7,196
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 306 11 May 2017 288
ZIP 3026 11 May 2017 665
PDF 2091 11 May 2017 711
PDF 261 11 May 2017 443
PDF 60 11 May 2017 622
PDF 1270 11 May 2017 3,265
Related Tools & Software

Software (1)




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