DRV8881ERHRR.A中文资料德州仪器数据手册PDF规格书

1 Features

1• Dual H-Bridge Motor Driver

– Bipolar Stepper Motor Driver

– Single or Dual Brushed-DC Motor Driver

• 6.5- to 45-V Operating Supply Voltage Range

• Two Control Interface Options

– PHASE/ENABLE (DRV8881E)

– PWM (DRV8881P)

• Multiple Decay Modes to Support Any Motor

– Smart tune (DRV8881E Only)

– Mixed Decay

– Slow Decay

– Fast Decay

• Adaptive Blanking Time for Smooth Motion

• Parallel Mode Operation (DRV8881P Only)

• Configurable Off-Time PWM Chopping

– 10, 20, or 30 μs Off-Time

• 3.3-V, 10-mA LDO Regulator

• Low-Current Sleep Mode (28 μA)

• Small Package and Footprint

– 28 HTSSOP (PowerPAD)

– 28 WQFN (PowerPAD)

SPACE

• Protection Features

– VM Undervoltage Lockout (UVLO)

– Charge Pump Undervoltage (CPUV)

– Overcurrent Protection (OCP)

– Automatic OCP Retry

– Thermal Shutdown (TSD)

– Fault Condition Indication Pin (nFAULT)

2 Applications

• Automatic Teller and Money Handling Machines

• Video Security Cameras

• Multi-Function Printers and Document Scanners

• Factory Automation and Robotics

• Stage Lighting Equipment

3 Description

The DRV8881 is a bipolar stepper or brushed-DC

motor driver for industrial applications. The device

output stage consists of two N-channel power

MOSFET H-bridge drivers. The DRV8881 is capable

of driving up to 2.5-A peak current or 1.4-A rms

current per H-bridge (with proper PCB ground plane

for thermal dissipation and at 24 V and TA = 25°C).

Smart tune automatically tunes motors for optimal

current regulation performance and compensates for

motor variation and aging effects. Smart tune is

available on the DRV8881E. Additionally, slow, fast,

and mixed decay modes are available.

The PH/EN (DRV8881E) or PWM (DRV8881P) pins

provide a simple control interface. An internal sense

amplifier allows for adjustable current control. A lowpower

sleep mode is provided for very-low quiescent

current standby using a dedicated nSLEEP pin.

Internal protection functions are provided for

undervoltage, charge pump faults, overcurrent, shortcircuits,

and overtemperature. Fault conditions are

indicated by a nFAULT pin.