DRV8452中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

1 Features

? Stepper motor driver

– SPI or H/W interface with STEP/DIR pins

– Up to 1/256 microstepping indexer

? 4.5 V to 48 V operating supply voltage range

? Low RDS(ON): 100 mΩ HS + LS at 24 V, 25°C

? High current capacity per bridge:

– DDW Package: 5A full-scale, 3.5A RMS

– PWP Package: 4A full-scale, 2.8A RMS

? DDW package pin-to-pin compatible with -

– DRV8462DDWR

? PWP package pin-to-pin compatible with -

– SPI Interface: DRV8434S

– H/W Interface: DRV8424, DRV8426, DRV8434

? Integrated current sensing and regulation

– 5 full-scale current accuracy

? Smart tune and mixed decay regulation options

? Silent step decay mode for silent operation at

standstill and low speed

? Automatic Microstepping mode for step

frequency interpolation

? Customizable microstepping indexer table

? Auto-torque for load dependent current control

? Standstill Power Saving mode

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

? Low-current sleep mode (3 μA)

? Separate logic supply voltage (VCC)

? Protection and diagnostic features

– Sensorless Stall Detection

– VM undervoltage lockout (UVLO)

– Open-load detection (OL)

– Overcurrent protection (OCP)

– Thermal shutdown (OTSD)

– Fault condition output (nFAULT)

– Indexer zero position output (nHOME)

2 Applications

? Textile Machines

? Factory Automation, Stepper Drives and Robotics

? Medical Imaging, Diagnostics and Equipment

? Stage Lighting

? ATMs and Currency Counters

? PLC

? Printers

? 3D Printer

? Outdoor IP Camera

3 Description

The DRV8452 is a wide-voltage, high-power, highperformance

stepper motor driver. The device

supports up to 48-V supply voltage, and integrated

MOSFETs with 100 mΩ HS + LS on-resistance allow

up to 5-A current with the DDW package; and up to

4-A current with the PWP package.

The auto-torque feature boosts system efficiency by

adjusting the coil current according to load torque.

The standstill power saving mode reduces power

loss during motor holding condition. The silent step

decay guarantees noiseless operation. The internal

current sense architecture eliminates the need for

external sense resistors, therefore saving PCB area

and system cost. The built-in indexer supports up to

1/256 microstepping, and the automatic microstepping

mode interpolates the input STEP signal to reduce

overhead on the controller. Stall detection eliminates

end stops from the system. The device supports

other protection and diagnostic features for robust and

reliable operation.

The DRV8452 requires only minimal tuning to

configure the advanced features. High energy

efficiency coupled with precise, noiseless operation

makes the DRV8452 an ideal choice for highperformance

stepper motor systems.