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Open loop stepper

Products and reference designs
Block diagram

Open loop stepper

Block diagram

Overview

Our integrated circuits and reference designs help you create compact, robust and efficient open loop steppers with accurate high-resolution, micro-stepping and smooth torque profile. Integrated microstep indexer and current control with smart tuning accelerate time to market.

Design requirements

Open loop stepper drive systems often require:

  • Efficient small form-factor hardware protected power stage with fault feedback.
  • Integrated microstepping indexer with stall detection.
  • Flexible decay modes for smooth torque and high resolution microstepping.
  • Input protection against reverse polarity and overcurrent.
Explore applications similar in function and design

Block diagram

Find products and reference designs for your system.

Open loop stepper

DC link voltage DC link voltage Digital I/O pulse train input step/dir Digital I/Opulse train inputstep/dir Stepper motor Stepper motor Multiple POL rails Multiple POL rails Isolated POL rails Isolated POL rails DC voltage input: 12-60Vdc DC voltage input: 12-60Vdc Status indicators - Overtemperature - Overvoltage - Overcurre... Status indicators- Overtemperature- Overvoltage- Overcurrent- Error User settings - Angle step - Current User settings- Angle step- Current Low-side shunts Low-side shunts For 5-phase stepper power stage add one more half bridge to p... For 5-phase stepper power stage add one more half bridge to power stageFET’s can either be integrated or external Input power protection Input power protection Inrush & over current protection Inrush & over current protection OVP & reverse polarity protect OVP & reverse polarity protect Reverse current protection Reverse current protection Diagnostics/monitoring Diagnostics/monitoring Temp sensor Temp sensor Supervisor Supervisor Isolated DC/DC POL IsolatedDC/DC POL `` `` Isolated DC/DC Isolated DC/DC User interface User interface LED driver LED driver I/O expander I/O expander Digital I/O interface Digital I/O interface Digital isolator Digital isolator Digital input Digital input Digital output Digital output Circuit protection Circuit protection Digital processing Digital processing MCU/ DRV MCU/DRV Logic Logic Integrated stepper driver power stage Integrated stepper driver power stage REF REF Stepper gate drivers Stepper gate drivers FETs FETs AMP AMP COMP COMP Non-isolated DC/DC POL Non-isolatedDC/DC POL Sequencer Sequencer PMIC PMIC DC/DC DC/DC LDO LDO

Integrated stepper driver power stage

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The power stage is typically two full-bridges FET based for bipolar steppers or 5 half-bridges for a 5 phase stepper. The smart gate driver converts step and direction signals into motor microsteps using current control, it also adds diagnostics/protection for over current (OC). The gate driver has major impacts on power stage performance, efficiency and protection. FET’s can either be integrated with a stepper driver or external.

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Motor drivers (9)
Stepper motor drivers
  • DRV8462—65V, 10A dual H-bridge stepper motor driver with smart tune, stall detect and auto torque
    Data sheet: PDF | HTML
  • DRV8424—35-V, 2.5-A bipolar stepper driver with integrated current sensing & 1/256 microstepping
    Data sheet: PDF | HTML
  • DRV8818—35-V, 2.5-A bipolar stepper motor driver with current regulation and 1/8 microstepping
    Data sheet: PDF | HTML
  • DRV8425—35V, 2A bipolar stepper motor driver with integrated current sensing and 1/256 microstepping
    Data sheet: PDF | HTML
  • DRV8711—52-V, bipolar stepper motor gate driver with 1/256 microstepping & stall detect
    Data sheet: PDF | HTML
  • DRV8428—35-V, 1-A bipolar stepper motor driver with integrated current sensing & 1/256 microstepping
    Data sheet: PDF | HTML
Brushed DC (BDC) motor drivers
  • DRV8952—50-V four-channel half-bridge driver with current sense outputs
    Data sheet: PDF | HTML
  • DRV8962—65-V four-channel half-bridge driver with current sense outputs
    Data sheet: PDF | HTML
  • DRV8220—20-V, 1.76-A H-bridge motor driver with auto sleep mode
    Data sheet: PDF | HTML
Power management (11)
Half-bridge drivers
  • UCC27282—3-A, 120-V half-bridge gate driver with 5-V UVLO, interlock and enable
    Data sheet: PDF | HTML
  • LM5109B—1-A, 100-V half bridge gate driver with 8-V UVLO and high noise immunity
    Data sheet: PDF | HTML
  • UCC27710—0.5-A/1.0-A, 620-V half bridge gate driver with interlock
    Data sheet: PDF | HTML
  • LM5107—1.4-A, 100-V half bridge gate driver with 8-V UVLO
    Data sheet: PDF | HTML
  • SM72295—3-A, 100-V full bridge gate driver with Integrated current sense amplifier
    Data sheet: PDF | HTML
MOSFETs
  • CSD18543Q3A—60-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 9.9 mOhm
    Data sheet: PDF | HTML
  • CSD18531Q5A—60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 4.6 mOhm
    Data sheet: PDF | HTML
  • CSD18532Q5B—60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 3.2 mOhm
    Data sheet: PDF | HTML
  • CSD18537NQ5A—60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 13 mOhm
    Data sheet: PDF | HTML
  • CSD17483F4—30-V, N channel NexFET™ power MOSFET, single LGA 1 mm x 0.6 mm, 260 mOhm, gate ESD protection
    Data sheet: PDF | HTML
  • CSD88537ND—60-V, N channel NexFET™ power MOSFET, dual SO-8, 15 mOhm
    Data sheet: PDF | HTML
Amplifiers (8)
Analog current-sense amplifiers
  • INA241B—-5-V to 110-V bidirectional high-precision current sense amplifier with enhanced PWM rejection
    Data sheet: PDF | HTML
  • INA310A—-4-V to 110-V, 1.3-MHz, ultra-precise current-sense amplifier with comparator
    Data sheet: PDF | HTML
General-purpose op amps
  • TLV9001—One-channel, 1-MHz rail-to-rail input and output 1.8-V to 5.5-V operational amplifier
    Data sheet: PDF | HTML
  • LMV324A—Quad, 5.5-V, 1-MHz, 4-mV offset voltage, RRO operational amplifier
    Data sheet: PDF | HTML
  • LM358B—Dual, 36-V, 1.2-MHz, 3-mV offset voltage operational amplifier with -40°C to 85°C operation
    Data sheet: PDF | HTML
  • OPA2991—Dual, 40-V, 4.5-MHz, low-power operational amplifier
    Data sheet: PDF | HTML
  • TLV6742—Dual, 5.5-V, 10-MHz, low noise (4.6-nV/√Hz) operational amplifier
    Data sheet: PDF | HTML
Comparators
  • LM2901V—Enhanced-voltage quad differential comparator
    Data sheet: PDF | HTML
  • TIDA-00736—Universal Stepper Motor Driver Reference Design
    Test report: PDF Schematic: PDF
  • TIDA-00872—Unipolar Stepper Motor Driver using a Bipolar Stepper Motor Controller Reference Design
    Design guide: PDF Schematic: PDF
  • TIDA-01227—High Voltage Stepper Driver Reference Design
    Design guide: PDF Schematic: PDF
  • TIDA-01370—Closed Loop Stepper Motor Reference Design With Encoder for Stall-Detection
    Design guide: PDF Schematic: PDF
Hardware development
Evaluation board
  • DRV8886EVM — 2.0A Stepper Motor Driver With Integrated Sense Resistor Evaluation Module
  • BOOST-DRV8711 — Stepper Motor BoosterPack featuring DRV8711 and CSD88537ND

Technical documentation

View all 6
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Type Title Date
Technical article How to spin your stepper motor more efficiently, Part 1 PDF | HTML 14 Aug 2023
White paper How smart tune regulates current in stepper motors (Rev. A) 11 May 2022
Application note Current Recirculation and Decay Modes (Rev. A) PDF | HTML 10 May 2022
Application brief Current Sensing in an H-Bridge (Rev. D) PDF | HTML 07 Apr 2023
White paper Fully integrated signal and power isolation – applications and benefits 04 Apr 2017
Application note Stepper Motor Driving with Peripheral Drivers (Rev. A) PDF | HTML 02 Jul 2018

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