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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

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
EVAL6228QRActiveL6228QBuy Direct49Distributor reported inventory date: 2015-10-02
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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