75V/10A Protected Full-Bridge Power Stage Reference Design for Brushed DC Drives
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Key Document


Low voltage brushed DC drives are used in many applications. TI offers a rich family of brushed DC motor driver solutions with flexible control interface options for one or more brushed DC motors up to 60V.  For applications which require higher torque and power, often voltages above 60VDC are used. The TIDA-00365 protected full-bridge operates at nominal 75VDC input and 10A output current and features bipolar high-side current sensing leveraging a 100V full-bridge gate driver SM72295 with integrated amplifiers and four 100V NexFET power MOSFETs with ultra-low gate charge and small SON5x6 package with low thermal resistance. The power stage is protected against over-temperature, over-current and short-circuit between the motor terminals and motor terminals to ground. Onboard power supplies provide a 12V and a 3.3V rail for the gate driver and signal chain. The host processor interface is 3.3V I/O to connect a host MCU like C2000 Piccolo MCU for brushed DC motor current control.

  • Protected full-bridge power stage with input voltage up to 100VDC (75VDC nominal) and 10A output current
  • BOM reduction through SM72295 100-V full-bridge gate driver with integrated amplifiers used for high-side bipolar phase current sensing
  • Calibrated current sense accuracy ±1% (over full range ±10A and ±0.2% (within ±1A range)
  • Full-bridge optimized for low EMI with 25ns rise/fall time on switch-node voltages with no over- and under-shoot
  • Full-bridge protected against over-temperature, under-voltage, over- and short-circuit current between motor terminals and motor terminals to GND
  • 95% efficiency at 16 kHz PWM. No heatsink required at 25C ambient and nominal load thanks to TI NexFET power MOSFET
  • Host processor interface with dual complementary PWM inputs (3.3V CMOS) and analog outputs (0-3.3V) for bipolar high-side current sense and motor terminal voltage

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5V low-Iq adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
CSD19534Q5A  100V, N ch NexFET MOSFET™, single SON5x6, 15.1mOhm  MOSFETs  Sample & Buy Not Available
LM2901V  Quad Differential Comparator, Enhanced Voltage  Amplifiers  Sample & Buy Not Available
LM317L  3-pin or 8-pin 100-mA adjustable positive regulator  Power management  Sample & Buy Not Available
LM5018  7.5-100V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LMT89  ±4°C analog output temperature sensor, with -11.77mV/°C gain  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
SM72295  3A Full Bridge Gate Driver with integrated Current Sense Amplifier SM72295  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G175  Single D-Type Flip-Flop with Asynchronous Clear  Flip-flop/latch/register  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ATL431 Download Download
CSD19534Q5A VSONP (DQJ)| 8 Download
LM2901V Download -
Download Download
LM317L Download Download
Download -
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Download Download
LM5018 Download Download
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LMT89 Download
SM72295 Download Download
SN74LVC1G175 Download Download
Download Download
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Technical Documents

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Application notes (2)
Title Type Size (KB) Date
PDF 119 27 Nov 2018
PDF 599 16 Jun 2009
User guides (1)
Title Type Size (KB) Date
PDF 1513 16 Mar 2017
Design files (6)
Title Type Size (KB) Date
ZIP 1257 16 Aug 2016
ZIP 1202 16 Aug 2016
PDF 2626 16 Aug 2016
PDF 480 16 Aug 2016
PDF 79 16 Aug 2016
PDF 754 16 Aug 2016
Related Tools & Software

Reference Designs  ( 2 )

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
C2000 Piccolo MCU F28069M LaunchPad™ development kit  LAUNCHXL-F28069M  Evaluation Modules & Boards 

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