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L6228Q: Dual full bridge with PWM current control and translator for stepper reference design board
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The L6228Q is a DMOS fully integrated stepper motor driver, realized in BCD multipower technology.

The L6228Q includes the circuitry to drive a two-phase bipolar stepper motor: a dual DMOS full-bridge, the constant off-time, the PWM current controller performing the chopping regulation and the phase sequence generator, which generates the stepping sequence. The device features a non-dissipative overcurrent protection on the high-side power MOSFETs and thermal shutdown.

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Errata Sheet
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Data Brief

Key Features

  • Operating supply voltage from 8 to 52 V
  • 2.8 A output peak current (1.4 Ar.m.s.)
  • RDS(on)0.73 Ω typ. value @ TJ= 25 °C
  • Operating frequency up to 100 kHz
  • Non dissipative overcurrent protection
  • Dual independent constant tOFFPWM current controllers
  • Fast/slow decay mode selection
  • Fast decay quasi-synchronous rectification
  • Decoding logic for stepper motor full and half- step drive
  • Cross conduction protection
  • Thermal shutdown
  • Undervoltage lockout
  • Integrated fast free wheeling diodes


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1878: Demonstration board mounting the L6228Q dual full-bridge driver
1.0 250 KB

Application Notes

Description Version Size
AN2757: EVAL6228QR reference design board
2.1 224 KB
AN2839: L6228 fully-integrated two-phase stepper motor driver
1.2 1,603 KB

Hardware Resources

Bill of Materials

Description Version Size
1.0.0 13 KB

Schematic Pack

Description Version Size
EVAL6228QR schematic
1.0.0 15 KB

Publications and Collaterals


Description Version Size
Products and Solutions for Factory Automation and Control
Jan 2015 3,105 KB

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
EVAL6228QRActiveL6228QBuy Direct49Distributor reported inventory date: 2015-10-13
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA50

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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