STMicroelectronics | L6228D

The L6228D is a DMOS Fully Integrated Stepper Motor Driver with non-dissipative Overcurrent Protection, realized in MultiPower-BCD technology, which combines isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a two-phase bipolar stepper motor including: a dual DMOS Full Bridge, the constant off time PWM Current Controller that performs the chopping regulation and the Phase Sequence Generator, that generates the stepping sequence.

Features:

• Operating supply voltage from 8 to 52 V
• 2.8 A output peak current (1.4 A DC)
• RDS(on) 0.73 Ω typ. value @ TJ = 25 °C
• Operating frequency up to 100 kHz
• Non Dissipative Overcurrent Protection
• Dual Independent Constant toff PWM CurrentControllers
• Fast/Slow Decay Mode Selection
• Fast Decay Quasi-Synchronous Rectification
• Decoding Logic for Stepper MotorFull And Step Drive
• Cross conduction protection
• Thermal shutdown
• Undervoltage lockout
• Integrated fast free wheeling diodes

Applications:

• Bipolar Stepper Motor