Dual full-bridge driver gives robust operation in stepper or dc motors

STMicroelectronics

The STMicroelectronics L6206Q includes built-in over-current and thermal protection features

The STMicroelectronics L6206Q is a dual full-bridge driver which supplies a peak current output of 5.6 A to a dc or stepper motor.

 

The device benefits from ST’s BCDmultipower technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. Supplied in a 7 mm x 7 mm VFQFPN package, the L6206Q driver ensures reliable and safe operation of electric motors: it features thermal shutdown protection, and performs non-dissipative over-current detection on the high-side power MOSFETs. A diagnostic output can easily be used to implement over-current protection.

 

The L6206Q is a member of the L62 series, which includes various motor drivers for a wide range of applications in small and medium-sized motors. The products include the L6208 and L6228, which feature an embedded stepping sequence generator for driving stepper motors.

 

The L6205/06/07 and L6225/26/27 are general-purpose brushed dc motor drivers, and feature programmable over-current protection.

 

The L6229, L6230, L6234 and L6235 are ideal for both sensored and sensorless driving of three-phase brushless dc motors. They include embedded PWM current control and decoding logic for Hall-effect position sensors.

Features

  • Supply-voltage range: 8 V to 52 V
  • 0.3 Ω on-resistance at a junction temperature of 25°C
  • Operating frequency up to 100 kHz
  • Paralleled operation
  • Cross-conduction protection
  • Under-voltage lockout
  • Integrated fast freewheeling diodes

Applications

  • Bipolar stepper motors
  • Dual or quad dc motors
STMicroelectronics — L6206Q Motor Driver IC

Evaluation Board

Part Number: EVL62XX-MAIN

The EVL62XX-MAIN expansion board hosts small EVL62XX-PLUG plug-in boards, enabling the quick and easy evaluation of members of the L62 family of drivers for brushed dc and stepper motors. The EVL62XX-MAIN is compatible with the Arduino UNO R3 connector.

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