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


Stepper drives are used in many applications operating typically from 12VDC to 48VDC. TI offers a rich family of stepper motor driver solutions with industry standard step/direction and parallel control interfaces.

For applications which require higher torque and power, often voltages above 48VDC, up to 100VDC are used. The TIDA-00210 provides a solution for such stepper drives. The TIDA-00210 uses two protected full-bridge power stages based on TIDA-00365 in parallel configuration. Each full-bridge operates nominal 75VDC and 10Arms phase 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 fully 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 for stepper motor control.

  • Protected full-bridge power stage with input voltage up to 100VDC (75VDC nominal) and 10Arms phase current.
  • BOM reduction using SM72295 100V full-bridge gate driver with integrated amplifiers used for high-side bipolar phase current sensing, supporting up to 256 micro steps.
  • 95% efficiency at 16 kHz PWM, nominal load with very low switching losses to support higher PWM frequencies too. No heatsink required at 25C ambient and nominal load thanks to TI NexFET power MOSFET.
  • Full-bridge optimized for low EMI thanks to NexFET’s fast turn-on and turn-off switching time, 25ns with no overshoot on switch-node voltages.
  • Hardware protected against over-temperature, over-current and short circuit between phase to phase and phase to GND, as well as UVLO. Thresholds are custom configurable in HW.
  • 3.3V host processor interface allow MCU like C2000 to implement custom stepper motor control. The complementary PWM inputs and bipolar high-side current sense buffered 0-3.3V analog output allow for precise phase current control. Phase to GND voltage feedback signals allow for back EMF sensing and stall detection. An Enable signals allows the MCU to turn-on and turn-off the power stage.

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5-V low-IQ adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
CSD19534Q5A  100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 15.1 mOhm  MOSFETs  Sample & Buy Not Available
LM2901V  Quad Differential Comparator, Enhanced Voltage  Amplifiers  Sample & Buy Not Available
LM317L  100-mA, 35-V, adjustable linear voltage 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  ±2.5°C analog output temperature sensor, with -11.77mV/°C gain  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
SM72295  3-A, 100-V full bridge gate driver with Integrated current sense amplifier  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 -
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LM317L Download Download
Download -
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LM5018 Download Download
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LMT89 Download
SM72295 Download Download
SN74LVC1G175 Download Download
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Technical documentation

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Application note (1)
Title Type Size (KB) Date
PDF 119 27 Nov 2018
User guide (1)
Title Type Size (KB) Date
PDF 4723 28 Sep 2016
Design files (6)
Title Type Size (KB) Date
ZIP 1393 27 May 2016
ZIP 9445 27 May 2016
PDF 2148 27 May 2016
PDF 286 27 May 2016
PDF 146 27 May 2016
PDF 793 27 May 2016
Related Tools & Software

Reference Designs (5)

Name Part Number Tool Type
24V Stepper Motor Controller with Integrated Current Sense Reference Design  TIDA-00867  Reference design 
Auto-Torque Implementation Reference Design  TIDA-00740  Reference design 
High Performance Bipolar Stepper Drive Stage Reference Design with 256 Microstep Support  TIDA-00261  Reference design 
Stepper Motor System with Medium Torque Drive  TIDA-00111  Reference design 
Universal Stepper Motor Driver Reference Design  TIDA-00736  Reference design 

Hardware development (1)

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

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