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L6228Q: Dual full-bridge stepper reference design board with PWM current control and converter

EVAL6228QR

Overview

The L6228Q is a DMOS fully integrated stepper motor driver, realized in BCD multipower technology.

The L6228Q includes the circuitry to drive a two-phase bipolar stepper motor: a dual DMOS full-bridge, the constant off-time, the PWM current controller performing the chopping regulation and the phase sequence generator, which generates the stepping sequence. The device features a non-dissipative overcurrent protection on the high-side power MOSFETs and thermal shutdown.

Main features

Operating supply voltage from 8 to 52 V
2.8 A output peak current (1.4 A_r.m.s.)
R_DS(on)0.73 Ω typ. value @ T_J= 25 °C
Operating frequency up to 100 kHz
Non dissipative overcurrent protection
Dual independent constant t_OFFPWM current controllers
Fast/slow decay mode selection

Fast decay quasi-synchronous rectification
Decoding logic for stepper motor full and half- step drive
Cross conduction protection
Thermal shutdown
Undervoltage lockout
Integrated fast free wheeling diodes

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-03 20:37:28

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