DRV8847RTET集成电路（IC）的电机驱动器控制器规格书PDF中文资料

DRV8847RTET属于集成电路（IC）的电机驱动器控制器。由德州仪器制造生产的DRV8847RTET电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。

1 Features

• Dual H-bridge motor driver

– Single or dual-brushed DC motors

– One bipolar stepper motor

– Solenoid loads

• 2.7-V to 18-V operating voltage range

• High output current per H-bridge

– 1-A RMS driver current at TA = 25°C

– 2-A RMS driver current in parallel mode at TA =

25°C

• Low on-state resistance at VM > 5-V

– 1000 mΩ RDS(ON) (HS + LS) at TA = 25°C

• Multiple control interface options

– 4-Pin interface

– 2-Pin interface

– Parallel bridge interface

– Independent bridge interface

• Current regulation with 20-μs fixed off-time

• Torque scalar for scaling output current to 50

• Supports 1.8-V, 3.3-V, 5-V logic inputs

• Low-power sleep mode

– 1.7-μA Sleep mode supply current at VVM = 12-

V, TA = 25°C

• I2C Device Variant Available (DRV8847S)

– Detailed diagnostics on I2C registers

– Multi-slave operation support

– Supports standard and fast I2C mode

• Small packages and footprints

– 16 Pin TSSOP (no thermal pad)

– 16 Pin HTSSOP PowerPAD™ package

– 16 Pin WQFN thermal package

• Built-in protection features

– VM undervoltage lockout

– Overcurrent protection

– Open load detection

– Thermal shutdown

– Fault condition indication pin (nFAULT)

2 Applications

• Refrigerator damper and ice maker

• Washers, dryers and dishwashers

• Electronic point-of-sale (ePOS) printers

• Stage lighting equipment

• Miniature circuit breakers and smart meters

3 Description

The DRV8847 device is a dual H-bridge motor driver

for industrial applications, home appliances, ePOS

printers, and other mechatronic applications. This

device can be used for driving two DC motors, a

bipolar stepper motor, or other loads such as relays.

A simple PWM interface allows an easy interface with

the controller. The DRV8847 device operates off a

single power supply and supports a wide input supply

range from 2.7 to 18 V.

The output stage of the driver consists of N-channel

power MOSFETs configured as two full H-bridges to

drive motor windings or four independent half bridges

(in an independent bridge interface). A fixed off time

controls the peak current in the bridge which can drive

a 1-A load (2-A in parallel mode with proper heat

sinking, at 25°C TA).

A low-power sleep mode is provided to achieve a

low quiescent current draw by shutting down much

of the internal circuitry. Additionally, a torque scalar is

provided which dynamically scales the output current

through a digital input pin. This feature lets the

controller decrease the current required for lower

power consumption.

Internal protection functions are provided for

undervoltage-lockout, overcurrent protection on each

FET, short circuit protection, open-load detection, and

overtemperature. Fault conditions are indicated by the

nFAULT pin. The I2C device variant (DRV8847S) has

detailed diagnostics.