MTS2916A Datasheet, PDF (1/20 Pages) Microchip Technology – Dual Full-Bridge Motor Driver

MTS2916A
Dual Full-Bridge Motor Driver
Features
• 750 mA Continuous Output Current
• Load Voltage Supply: 10V to 40V
• Full Bipolar Stepper Motor Drive Capability
• Bidirectional DC Motor Capability
• Internal Fixed T_OFF Time PWM Current Control
• Internal Protection Diodes
• Internal Thermal Shutdown
• Under Voltage Lockout
• LS-TTL Compatible Logic Inputs with Pull-Up
Resistors
• Low R_ON Output Resistance
• Low Quiescent Current
• Operating Temperature Range: -40°C to +105°C
• Pin Compatible with Allegro 2916
Applications
• Stepper Motor Actuators
• DC Motor Actuators
• Automotive HVAC Ventilation
• Automotive Power Seats
Note: The MTS2916A device is formerly a
product of Advanced Silicon.
Description
The MTS2916A motor driver is a CMOS device
capable of driving both windings of a bipolar stepper
motor or bidirectionally control two DC motors. Each of
the two independent H-bridge outputs is capable of
sustaining 40V and delivering up to 750 mA of
continuous current. The output current level is
controlled by an internal pulse-width modulation
(PWM) circuit that is configured using two logic inputs,
a current sense resistor and a selectable reference
voltage. The H-bridge outputs have been optimized to
provide a low output saturation voltage drop.
Full, half, and micro-stepping operations are possible
with the PWM current control and logic inputs. The
maximum output current is set by a sensing resistor
and a user selectable reference voltage. The output
current limit is selected using two logic level inputs. The
selectable output current limits are 0%, 33%, 67%, or
100% of the maximum output current. Each bridge has
a PHASE input signal which is used to control the direc-
tion of current flow through the H-bridge and the load.
The H-bridge power stage is controlled by non-overlap-
ping signals which prevent current cross conduction
when switching the direction of the current flow. Internal
clamp diodes protect against inductive transients.
Thermal protection circuitry disables the outputs when
the junction temperature exceeds the safe operating
limit. No special power-up sequencing is required.
Undervoltage Lockout circuitry prevents the chip from
operating when the load supply is applied prior to the
logic supply.
The device is supplied in a 24-pin SOP package.
Package Types
MTS2916A
SOP-24 I02 1
I12 2
PHASE2 3
V_REF2 4
RC2 5
GND 6
GND 7
V_LOGIC 8
RC1 9
V_REF1 10
PHASE1 11
I11 12
24 V_LOAD
23 OUT2B
22 COMPIN2
21 SENSE2
20 OUT2A
19 GND
18 GND
17 OUT1A
16 SENSE1
15 COMPIN1
14 OUT1B
13 I01
 2010-2013 Microchip Technology Inc.
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