L6235 - DMOS driver for 3-phase brushless DC motor - STMicroelectronics

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Product overview

Description

The L6235 device is a DMOS fully integrated 3-phase motor driver with overcurrent protection.

Realized in BCDtechnology, 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 PowerSO36 and SO24 (20 + 2 + 2) packages, the L6235 device 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

5.6 A output peak current (2.8 A DC)

R_DS(ON) 0.3 Ω typ. value at T_j = 25 °C

Operating frequency up to 100 KHz

Non-dissipative overcurrent detection and protection

Diagnostic output

Constant t_OFF PWM current controller

Slow decay synchr. rectification
60° and 120° hall effect decoding logic

Brake function

Tachometer output for speed loop

Cross conduction protection

Thermal shutdown

Undervoltage lockout

Integrated fast freewheeling diodes
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Circuit Diagram

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All resources

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	Resource title	Version	Latest update

Board Manufacturing Specifications (2)

	Resource title	Version	Latest update
ZIP	EVAL6235N GERBER		13 Jan 2016	13 Jan 2016 EVAL6235N GERBER
ZIP	PCB Layout	1.0	01 Aug 2015	01 Aug 2015 PCB Layout 1.0

Schematic Pack (2)

	Resource title	Version	Latest update
PDF	Board Schematic	1.0	01 Aug 2015	01 Aug 2015 Board Schematic 1.0
PDF	Board Schematic	1.0	01 Aug 2015	01 Aug 2015 Board Schematic 1.0

Quality and Reliability

Part Number	Marketing Status	Package	Grade	RoHS Compliance Grade	Longevity Commitment	Longevity Starting Date	Material Declaration**
L6235D	Active	SO-24	Industrial	Ecopack1	10	2025-01-01T00:00:00.000+01:00
L6235D013TR	Active	SO-24	Industrial	Ecopack1	10	2025-01-01T00:00:00.000+01:00
L6235PD	Active	PowerSO 36	Industrial	Ecopack2	10	2025-01-01T00:00:00.000+01:00	PDF XML
L6235PD013TR	Active	PowerSO 36	Industrial	Ecopack2	10	2025-01-01T00:00:00.000+01:00	PDF XML

L6235D

Package:

SO-24

Material Declaration**:

L6235D013TR

Package:

SO-24

Material Declaration**:

L6235PD

Package:

PowerSO 36

Material Declaration**:

L6235PD013TR

Package:

PowerSO 36

Material Declaration**:

(**) 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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