DRV8262中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書

1 Features

? Single or dual H-bridge motor driver

– Drives One or two brushed-DC motors

– One stepper motor

– One or two thermoelectric coolers (TEC)

? 4.5 V to 65 V operating supply voltage range

? Low RDS(ON):

– 100 mΩ HS + LS (Dual H-Bridge)

– 50 mΩ HS + LS (Single H-Bridge)

? High output current capability:

– Dual H-Bridge (24 V, 25 °C):

? 8-A peak with DDW package

? 16-A peak with DDV package

– Single H-Bridge (24 V, 25 °C):

? 16-A peak with DDW package

? 32-A peak with DDV package

? Pin-to-pin compatible with:

– DRV8252: 48V, H-bridge motor driver

? Programmable interface of operation -

– Phase/Enable (PH/EN)

– PWM (IN/IN)

? Integrated current sense and regulation

– Current sensing for high-side MOSFETs

– Sense output (IPROPI) for each H-bridge

– ± 4 sense accuracy at maximum current

? Separate logic supply voltage (VCC)

? Configurable off-Time PWM chopping

– 7, 16, 24 or 32 μs

? Programmable fault recovery method

? Supports 1.8-V, 3.3-V, 5.0-V logic inputs

? Low-current sleep mode (3 μA)

? Protection features

– VM undervoltage lockout (UVLO)

– Charge pump undervoltage (CPUV)

– Overcurrent protection (OCP)

– Thermal shutdown (OTSD)

– Fault condition output (nFAULT)

2 Applications

? Brushed DC Motors

? Factory Automation, Stepper Drives and Robotics

? Medical Imaging, Diagnostics and Equipment

? ATMs, currency counters, and EPOS

? TEC Drivers

3 Description

The DRV8262 is a wide-voltage, high-power, Hbridge

motor driver for a wide variety of industrial

applications. The device integrates two H-bridges to

drive two DC motors or a bipolar stepper motor. The

H-bridges can be paralleled to drive one DC motor

with higher current. The DRV8262 supports up to

16-A peak current in the dual H-bridge mode and

up to 32-A in the single H-bridge mode. The device

also integrates current sensing and regulation, current

sense output and protection circuitry.

Integrated current sensing across the high-side

MOSFETs allows the driver to regulate the motor

current during startup and high load events. A current

limit can be set with an adjustable external voltage

reference. Additionally, the device provides output

current proportional to the motor current for each Hbridge.

The integrated sensing uses a current mirror,

removing the need for large shunt resistors, saving

board area and reducing system cost.

A low-power sleep mode is provided to achieve ultralow

quiescent current. Internal protection features are

provided for supply undervoltage lockout (UVLO),

charge pump undervoltage (CPUV), output over

current (OCP), and device overtemperature (OTSD).