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L6229
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Education Design Win
DMOS driver for three-phase brushless DC motor

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Product overview

Description

The L6229 is a DMOS fully integrated 3-phase motor driver with overcurrent protection.

Realized in BCD technology, the device combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip.

The device includes all the circuitry needed to drive a 3-phase BLDC motor including: a 3-phase DMOS bridge, a constant off time PWM current controller and the decoding logic for single ended Hall sensors that generates the required sequence for the power stage.

Available in Power SO36 and SO24 (20 + 2 + 2) packages, the L6229 features a non-dissipative overcurrent protection on the high-side power MOSFET and thermal shutdown.

  • All features

    • Operating supply voltage from 8 to 52 V
    • 2.8 A output peak current (1.4 A DC)
    • RDS(ON) 0.73 Ω typ. value at Tj = 25 °C
    • Operating frequency up to 100 kHz
    • Non-dissipative overcurrent detection and protection
    • Diagnostic output
    • Constant tOFF PWM current controller
    • Slow decay synchronous rectification
    • 60° and 120° Hall effect decoding logic
    • Brake function
    • Tachometer output for speed loop
    • Cross conduction protection
    • Thermal shutdown
    • Undervoltage lockout
    • Integrated fast free wheeling diodes
    Read more Read less

Circuit Diagram

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STMicroelectronics - L6229

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Longevity Commitment Longevity Starting Date Material Declaration**
L6229D
Active
SO-24 Industrial Ecopack1 10 2026-01-01T00:00:00.000+01:00
L6229DTR
Active
SO-24 Industrial Ecopack1 10 2026-01-01T00:00:00.000+01:00
L6229PD
Active
PowerSO 36 Industrial Ecopack2 10 2026-01-01T00:00:00.000+01:00
L6229PDTR
Active
PowerSO 36 Industrial Ecopack2 10 2026-01-01T00:00:00.000+01:00

L6229D

Package:

SO-24

Material Declaration**:

More Info

Marketing Status

Active

Package

SO-24

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L6229DTR

Package:

SO-24

Material Declaration**:

More Info

Marketing Status

Active

Package

SO-24

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L6229PD

Package:

PowerSO 36

Material Declaration**:

PDF XML
More Info

Marketing Status

Active

Package

PowerSO 36

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6229PDTR

Package:

PowerSO 36

Material Declaration**:

PDF XML
More Info

Marketing Status

Active

Package

PowerSO 36

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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(*) 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

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