Semiconductor Group

1

1998-02-01

2.5-A High Performance Smart Power

Stepper-Motor Driver with Diagnostic Interface

SPT-IC

Overview

Features

• Single phase driver for stepper motor 2.5 A

• Low ON-resistance (typical 0.3

Ω)

• Wide supply range 6 V to 45 V

• Wide current range 10 mA to 3 A

• Fast nominal/actual comparator for micro

stepper mode

• Wide temperature range

• Short circuit protection

• Under voltage shutdown

• Overtemperature shutdown

• Serial diagnostic interface

• Fast freewheeling diodes

• TTL-compatible inputs

P-SIP-15-1

TLE 5250

Description

TLE 5250 is a monolithic IC in Smart Power technology for controlling and regulating the

motor current in one phase of a bipolar stepping motor. There are other applications in

driving DC motors and inductive loads that are operated on constant current.

The device has TTL-compatible logic inputs, includes a H-bridge with integrated, fast

free-wheeling diodes plus dynamic limiting of the motor current by a chopper mode. The

nominal current can be set continuously by a control voltage. Microstep mode can be

produced by applying a sinusoidal control voltage. Two TLE 5250s, with a minimum of

external circuitry and a single supply voltage, form a complete system - that can be

driven direct by an MC- for two-phase, bipolar stepping motors with output current of up

to 2.5 A per phase. The outputs of the IC are internally protected against shorted to

ground, supply voltage and shorted load. The output stages are also disabled by

undervoltage and overtemperature. All fault functions can be detected by the internal

diagnostics, which can be read out serially.

Type

Ordering Code

Package

TLE 5250

Q67000-A9103

P-SIP-15-1