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3-phase bridge drive circuit for automotive and industrial BLDC motors

3-phase BLDC Motor Drive Applications (U-phase)
3-phase BLDC Motor Drive Applications (U-phase)
Simulation Waveform for Overcurrent Protection
Simulation Waveform for Overcurrent Protection


  • Introduction of application to 3-phase brushless motor drive circuit combining TPD7212F/FN and TPD7104AF and power MOSFET
  • Explanation of overcurrent detection function and power supply connection protection function using TPD7104AF
  • Explanation of protection function using TPD7212F/FN
  • Operation confirmation by spice simulation


  • 3-phase BLDC motors drive circuit using TPD7212F/FN and power MOSFET TPW1R104PB
  • Various protection circuits using TPD7104AF for automotive and power MOSFET TPW1R104PB
  • Input voltage : 12V
  • Over current detection function
  • Power supply reverse connection protection function
  • Output cutoff function
  • Output-voltage monitoring function
  • Charge pump circuit voltage monitoring function

Reference design files

Design, Document

“Design・Document” contains the documents listed below.

Name Date

Design, File

“Design・File” contains the contents listed below.

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Toshiba items

Part Number Device Category Portion Usage Description
Intelligent Power Ics 1 Power MOSFET Gate driver/3-phase full-bridge circuits/VDD=4.5 to 18V/Built-in charge pump circuit /WQFN32/SSOP30(NEW)
TPD7104AF Intelligent Power Ics 4 Power MOSFET Gate driver/High-side switch/VDD=5 to 18V/Built-in charge pump circuit /PS-8
TPW1R104PB MOSFET 11 U-MOSIX-H/40V/0.95mΩ(typ)@VGS=10V/DSOP Advance(WF)M 



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