DRV10975PWPR.A中文资料德州仪器数据手册PDF规格书

1 Features

1• Input Voltage Range: 6.5 to 18 V

• Total Driver H + L rDS(on): 250 mΩ

• Drive Current: 1.5-A Continuous Winding Current

(2-A Peak)

• Sensorless Proprietary Back Electromotive Force

(BEMF) Control Scheme

• Continuous Sinusoidal 180° Commutation

• No External Sense Resistor Required

• For Flexibility User May Include External Sense

Resistor to Monitor Power Delivered to Motor

• Flexible User Interface Options:

– I2C Interface: Access Registers for Command

and Feedback

– Dedicated SPEED Pin: Accepts Either Analog

or PWM Input

– Dedicated FG Pin: Provides TACH Feedback

– Spin-Up Profile Customizable With EEPROM

– Forward-Reverse Control With DIR Pin

• Integrated Step-Down Regulator to Efficiently

Provide Voltage (5 V or 3.3 V) for Internal and

External Circuits

• Supply Current 4.5 mA With Standby Version

(DRV10975)

• Supply Current 80 μA With Sleep Version

(DRV10975Z)

• Overcurrent Protection

• Lock Detection

• Voltage Surge Protection

• UVLO Protection

• Thermal Shutdown Protection

• Thermally-Enhanced 24-Pin HTSSOP

2 Applications

• Appliance Fan

• HVAC

3 Description

The DRV10975 device is a three-phase sensorless

motor driver with integrated power MOSFETs, which

can provide continuous drive current up to 1.5 A. The

device is specifically designed for cost-sensitive, lownoise,

low-external-component-count applications.

The DRV10975 device uses a proprietary sensorless

control scheme to provide continuous sinusoidal

drive, which significantly reduces the pure tone

acoustics that typically occur as a result of

commutation. The interface to the device is designed

to be simple and flexible. The motor can be controlled

directly through PWM, analog, or I2C inputs. Motor

speed feedback is available through either the FG pin

or I2C.

The DRV10975 device features an integrated stepdown

regulator to efficiently step down the supply

voltage to either 5 or 3.3 V for powering both internal

and external circuits. The device is available in either

a sleep mode or a standby mode version to conserve

power when the motor is not running. The standby

mode (4.5-mA) version leaves the regulator running

and the sleep mode (80-μA) version shuts it off. Use

the standby mode version in applications where the

regulator is used to power an external microcontroller.

TI provides DRV10975 tuning Guide for quick setup

and tuning of the device for optimal performance.