DRV8837集成電路（IC）的電機驅(qū)動器控制器規(guī)格書PDF中文資料

DRV8837屬于集成電路（IC）的電機驅(qū)動器控制器。由德州儀器制造生產(chǎn)的DRV8837電機驅(qū)動器，控制器產(chǎn)品屬于電機驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機或相關機電執(zhí)行器的電源。所實現(xiàn)的具體功能和特性集根據(jù)預期負載和預期應用的特性有很大差異，范圍從用于有刷電機的簡單開環(huán)速度控制到基于步進電機的高級閉環(huán)運動控制。

1 Features

? N-channel H-bridge brushed DC motor driver

? 1.65-V to 11-V operating supply voltage range

? 240-mΩ RDS(on) (High-Side + Low-Side)

? High output current capability: 4-A Peak

? PWM control interface, up to 100 kHz switching

? Supports 1.8-V, 3.3-V, and 5-V logic inputs

? Integrated current sensing and current regulation

? Analog current sense output (IPROPI)

? Gain select (GAINSEL) feature for -

– High accuracy current sensing down to 10 mA

– Optimized RDS(ON) and overcurrent limit for

different current ranges

? Configurable inrush time (RTE Package only)

? Internal charge pump

? Long battery life with low-power sleep mode

– < 60 nA maximum sleep current

? Small package footprint

? Integrated protection features

– VM undervoltage lockout (UVLO)

– Auto-retry overcurrent protection (OCP)

– Thermal shutdown (TSD)

– Stall detection (RTE Package only)

2 Applications

? Brushed DC motor, solenoid, & relay driving

? Water and gas meters

? Electronic smart lock

? Electronic and robotic toys

? Infusion pumps and other portable medical

equipments

? Electric toothbrush

? Beauty & grooming

? Portable printers

? Point-of-sale (POS) devices

? Other battery powered DC motor applications

3 Description

The DRV8213 is an integrated motor driver with Nchannel

H-bridge, charge pump, current sense output,

current regulation, and protection circuitry. The tripler

charge pump allows the device to operate down to

1.65 V to accommodate 1.8-V supply rails and lowbattery

conditions. The charge pump integrates all

capacitors and allows for 100 duty cycle operation.

An internal current mirror implements current sensing

and regulation. This eliminates the need for a large

power shunt resistor, saving board area and reducing

system cost. The IPROPI current sense output allows

a microcontroller to detect motor stall or changes in

load conditions. The gain select (GAINSEL) feature

allows high accuracy current sensing down to 10

mA average motor current. Using the VREF pin,

this device can regulate the motor current during

startup and high-load events without interaction

from a microcontroller. The RTE package supports

sensorless motor stall detection and reporting to

microcontroller.

A low-power sleep mode achieves ultra-low quiescent

current by shutting down most of the internal circuitry.

Internal protection features include undervoltage

lockout, overcurrent, and overtemperature.