Datasheet > DRV8874

DRV8874

更新时间： 2024-11-29 11:15:23

品牌	Logo	应用领域
德州仪器 - TI		电机驱动驱动器
页数	文件大小	规格书
42页	2946K
描述
具有集成电流检测反馈功能的 40V、6A H 桥电机驱动器

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DRV8874

SLVSF66A –AUGUST 2019–REVISED DECEMBER 2019

DRV8874 H-Bridge Motor Driver With Integrated Current Sense and Regulation

1 Features

3 Description

The DRV8874 is an integrated motor driver with N-

channel H-bridge, charge pump, current sensing and

proportional output, current regulation, and protection

circuitry. The charge pump improves efficiency by

supporting N-channel MOSFET half bridges and

100% duty cycle driving. The family of devices come

in pin-to-pin R_DS(on)variants to support different loads

with minimal design changes.

•

N-channel H-bridge motor driver

–

Drives one bidirectional brushed DC motor

Two unidirectional brushed DC motors

Other resistive and inductive loads

•

4.5-V to 37-V operating supply voltage range

Pin to pin R_DS(on)variants

–

DRV8874: 200-mΩ (High-Side + Low-Side)

DRV8876: 700-mΩ (High-Side + Low-Side)

An internal current mirror architecture on the IPROPI

pin 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.

Using the external voltage reference pin, VREF,

these devices can regulate the motor current during

start-up and high-load events without interaction from

a microcontroller.

•

High output current capability

–

DRV8874: 6-A Peak

DRV8876: 3.5-A Peak

•

Integrated current sensing and regulation

Proportional current output (IPROPI)

Selectable current regulation (IMODE)

–

Cycle-by-cycle or fixed off time

A low-power sleep mode achieves ultra-low quiescent

current draw by shutting down most of the internal

circuitry. Internal protection features include supply

undervoltage lockout, charge pump undervoltage,

output overcurrent, and device overtemperature.

Fault conditions are indicated on nFAULT.

•

Selectable input control modes (PMODE)

–

PH/EN and PWM H-bridge control modes

Independent half-bridge control mode

•

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

Ultra low-power sleep mode

View our full portfolio of brushed motor drivers on

ti.com.

–

<1-µA @ V_VM= 24-V, T_J= 25°C

•

Spread spectrum clocking for low electromagnetic

interference (EMI)

(1)

Device Information

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Integrated protection features

DRV8874

HTSSOP (16)

5.00 mm × 4.40 mm

–

Undervoltage lockout (UVLO)

Charge pump undervoltage (CPUV)

Overcurrent protection (OCP)

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

–

Automatic retry or outputs latched off

(IMODE)

Simplified Schematic

4.5 to 37 V

–

Thermal shutdown (TSD)

Automatic fault recovery

Fault indicator pin (nFAULT)

DRV887x

nSLEEP

Control Inputs

H-Bridge

Motor Driver

2 Applications

nFAULT

•

Brushed DC motors

Current Sense

IPROPI

Major and small home appliances

Vacuum, humanoid, and toy robotics

Printers and scanners

IPROPI

Protection

Smart meters

ATMs, currency counters, and EPOS

Servo motors and actuators

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...42

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与DRV8874相关器件

型号	品牌	获取价格	描述	数据表
DRV8874PWPR	TI	获取价格	40-V, 6-A H-bridge motor driver with integrated current sensing feedback \| PWP \| 16 \| -40
DRV8874-Q1	TI	获取价格	具有集成电流检测和电流检测反馈功能的汽车类 40V、6A H 桥电机驱动器
DRV8874QPWPRQ1	TI	获取价格	具有集成电流检测和电流检测反馈功能的汽车类 40V、6A H 桥电机驱动器 \| PWP \|
DRV8876	TI	获取价格	具有集成电流检测和电流检测反馈功能的 40V、3.5A H 桥电机驱动器
DRV8876N	TI	获取价格	37V、3.5A 有刷直流电机驱动器
DRV8876NPWPR	TI	获取价格	37V、3.5A 有刷直流电机驱动器 \| PWP \| 16 \| -40 to 125
DRV8876NPWPT	TI	获取价格	37V、3.5A 有刷直流电机驱动器 \| PWP \| 16 \| -40 to 125
DRV8876PWPR	TI	获取价格	具有集成电流检测和电流检测反馈功能的 40V、3.5A H 桥电机驱动器 \| PWP \|
DRV8876PWPT	TI	获取价格	具有集成电流检测和电流检测反馈功能的 40V、3.5A H 桥电机驱动器 \| PWP \|
DRV8876-Q1	TI	获取价格	具有集成电流感应和电流感应反馈功能的汽车类 40V、3.5A H 桥电机驱动器

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