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L6208 DMOS driver for bipolar stepper motor evaluation board in PowerDip package

EVAL6208N

Overview

The EVAL6208N is built around L6208 in PowerDip package. It implements a typical stepper motor driver application. Screw connectors provide connection to motor supply rail and 5 V reference for the logic inputs, as well as the four outputs to motor windings. EVAL6208N can be hooked-up to practiSPIN interface board (EVALpractiSPIN) through a 34-pin connector. It is also possible to run board in stand-alone mode: four switches are used to set the direction of the rotation, the stepping sequence and the current decay style, while four potentiometers set the L6208 reference voltage and off-time for the PWM current control; external reference voltages can be provided by a PWM output of a µC.

Main features

DECODING LOGIC FOR STEPPER MOTOR FULL AND HALF STEP DRIVE
RECTIFICATION
THERMAL SHUTDOWN
CROSS CONDUCTION PROTECTION
UNDER VOLTAGE LOCKOUTINTEGRATED FAST FREE WHEELING DIODES
FAST/SLOW DECAY MODE SELECTION
DUAL INDEPENDENT CONSTANT t_OFF PWM CURRENT CONTROLLERS

OPERATING SUPPLY VOLTAGE FROM 8 TO 52V
RDS(ON) 0.3W TYP. VALUE @ T_j = 25°C
5.6A OUTPUT PEAK CURRENT (2.8A RMS)
NON DISSIPATIVE OVERCURRENT PROTECTION
FAST DECAY QUASI-SYNCHRONOUS
OPERATING FREQUENCY UP TO 100KHz

Design Files

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Update:2025-06-20 11:08:23

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