DMOS driver for 3-phase brushless DC motor

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 PowerDIP24 (20 + 2 + 2), 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.

Key Features

  • Operating supply voltage from 8 to 52 V
  • 5.6 A output peak current (2.8 A DC)
  • RDS(ON) 0.3 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 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

Circuit Diagram

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circuit_diagram_7618_thumbnail.png

Resources

Technical Documentation

Product Specifications
Description Version Size
DS2189 DS2189: DMOS driver for 3-phase brushless DC motor 3.0 675 KB
Application Notes
Description Version Size
AN4339 AN4339: BLDC motor based ceiling fan solution proposal 1.2 900 KB
AN1625 AN1625: L6235 three phase brushless DC motor driver 2.5 1 MB
Design Notes & Tips
Description Version Size
DT0045 DT0045: Design made easy with DC & BLDC motor driver tools 1.2 400 KB
DT0001 DT0001: Speed control using the L6235 or L6229 with a PWM output from a microcontroller 1.1 124 KB

Presentations & Training Material

Presentations
Description Version Size
An introduction to electric motors 1.0 2 MB
STSPIN L620x, L622x and L623x product presentation 1.0 1 MB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
EVAL6235N GERBER 194 KB
PCB Layout 1.0 184 KB
Schematic Pack
Description Version Size
Board Schematic 1.0 225 KB
Board Schematic 1.0 54 KB

Publications and Collaterals

Selection Guides
Description Version Size
STSPIN motor drivers 11.2016 1 MB
Brochures
Description Version Size
Motor Control Reference Guide 15.10 2 MB
Products and Solutions for Factory Automation and Control 1.0 3 MB
Get Started Support & Community


Sample & Buy

Part Number Marketing Status Quantity Unit Price (US$) * Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L6235D013TR Active 1000 2.53 SO-24 Tape And Reel -40 150 NEC EAR99 MALAYSIA MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6235D Active 1000 2.53 SO-24 Tube -40 150 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
L6235PD013TR Active 1000 3.444 PowerSO 36 Tape And Reel -40 150 NEC EAR99 MALAYSIA MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
L6235PD Active 1000 3.444 PowerSO 36 Tube -40 150 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
L6235N Active 1000 2.53 PDIP 24 .3 Tube -40 150 NEC EAR99 MALAYSIA MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
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(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6235D013TR ActiveSO-24IndustrialEcopack1 0 0
L6235D ActiveSO-24IndustrialEcopack1 0 0
L6235PD013TR ActivePowerSO 36IndustrialEcopack2 (**) 0 0
L6235PD ActivePowerSO 36IndustrialEcopack2 (**) 0 0
L6235N ActivePDIP 24 .3IndustrialEcopack1
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(**) 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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