MTS62C19A Datasheet, PDF (1/20 Pages) Microchip Technology – Dual Full-Bridge Motor Driver

MTS62C19A
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 6219
Applications
• Stepper Motor Actuators
• DC Motor Actuators
• Automotive HVAC Ventilation
• Automotive Power Seats
Note: The MTS62C19A device is formerly a
product of Advanced Silicon.
Description
The MTS62C19A motor driver is a CMOS device capa-
ble 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 sus-
taining 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
direction 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
MTS62C19A _{OUT1A 1}
SOP-24
OUT2A 2
SENSE2 3
COMPIN2 4
OUT2B 5
GND 6
GND 7
I02 8
I12 9
PHASE2 10
V_REF2 11
RC2 12
24 V_LOAD
23 SENSE1
22 COMPIN1
21 OUT1B
20 I01
19 GND
18 GND
17 I11
16 PHASE1
15 V_REF1
14 RC1
13 V_LOGIC
 2010-2013 Microchip Technology Inc.
DS22260C-page 1