L6228Q

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DMOS driver for bipolar stepper motor

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Product overview

Description

The L6228Q is a DMOS fully integrated stepper motor driver with non-dissipative overcurrent protection, realized in BCDmultipower technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a two-phase bipolar stepper motor including: a dual DMOS full bridge, the constant off time PWM current controller that performs the chopping regulation and the phase sequence generator, that generates the stepping sequence. Available in VFQFPN32 5 mm x 5 mm package, the L6228Q features a non-dissipative overcurrent protection on the high side power MOSFETs and thermal shutdown.

  • All features

    • Operating supply voltage from 8 to 52 V
    • 2.8 A output peak current (1.4 A RMS)
    • RDS(on)0.73 Ω typ. value @ TJ = 25 °C
    • Operating frequency up to 100 kHz
    • Non dissipative overcurrent protection
    • Dual independent constant tOFF PWM 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

Circuit Diagram

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STMicroelectronics - L6228Q

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6228Q
Active
VFQFPN 32 5x5x1.0 mm Industrial Ecopack2
L6228QTR
Active
VFQFPN 32 5x5x1.0 mm Industrial Ecopack2

L6228Q

Package:

VFQFPN 32 5x5x1.0 mm

Material Declaration**:

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6228QTR

Package:

VFQFPN 32 5x5x1.0 mm

Material Declaration**:

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com 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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L6228Q
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L6228QTR
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L6228QTR

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors