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

1 Features

? AEC-Q100 Qualified for Automotive

– Temperature grade 1: –40°C to +125°C, TA

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? – Single or dual H-bridge motor driver

– Drives One or two brushed-DC motors

– One stepper motor

– One or two thermoelectric coolers (TEC)

? 4.5V to 60V operating supply voltage range

? Low RDS(ON):

– 100mΩ HS + LS (Dual H-Bridge)

– 50mΩ HS + LS (Single H-Bridge)

? High output current capability:

– Dual H-Bridge (24V, 25 °C): 8A peak

– Single H-Bridge (24V, 25 °C): 16A peak

? 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 32μs

? Programmable fault recovery method

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

? Low-current sleep mode (3μA)

? Protection features

– VM undervoltage lockout (UVLO)

– Charge pump undervoltage (CPUV)

– Overcurrent protection (OCP)

– Thermal shutdown (OTSD)

– Fault condition output (nFAULT)

2 Applications

? 24V and 48V Automotive Body Systems

? Automotive Brushed DC Motors

? Door Modules, Mirrors, Shifter, Seats

? Trunk lift, Window lift

? Steering column, Sunroof shade

? Electric Vehicles, Truck, Bus and other

Commercial Vehicles

3 Description

The DRV8262-Q1 is a wide-voltage, high-power, Hbridge

motor driver for 24V and 48V automotive

applications. The device integrates two H-bridges to

drive one or two DC motors or a bipolar stepper

motor. The DRV8262-Q1 supports up to 8A peak

current in the dual H-bridge mode and up to 16A

peak current 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. The device also provides output

current proportional to the motor current for each Hbridge.

Integrated sensing removes the need for shunt

resistors, reducing board area and 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).