Datasheet > DRV8846

DRV8846

更新时间： 2024-09-19 01:08:35

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
35页	1117K
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DRV8846 Dual H-Bridge Stepper Motor Driver

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DRV8846

SLLSEK2 –JUNE 2014

DRV8846 Dual H-Bridge Stepper Motor Driver

1 Features

3 Description

The DRV8846 provides a highly-integrated stepper

motor driver for cameras, printers, projectors, and

other automated equipment applications. The device

has two H-bridges and a microstepping indexer and

is intended to drive a bipolar stepper motor. The

output block of each H-bridge driver consists of N-

channel and P-channel power MOSFETs configured

as full H-bridges to drive the motor windings. The

DRV8846 is capable of driving up to 1-A full scale

•

PWM Microstepping Motor Driver

–

Built-In Microstepping Indexer

Up to 1/32 Microstepping

Step/Direction Control

•

Multiple Decay Modes

–

Adaptive Decay

Mixed Decay

Slow Decay

Fast Decay

output current (with proper heatsinking and T_A

25°C).

A simple STEP/DIR interface allows easy interfacing

to controller circuits. Pins allow configuration of the

motor in full-step up to 1/32-step modes. Decay mode

is configurable so that adaptive decay, slow decay,

fast decay, and mixed decay can be used. The PWM

current chopping off-time can also be selected. A low-

power sleep mode is provided which shuts down

internal circuitry to achieve very-low quiescent current

draw. This sleep mode can be set using a dedicated

nSLEEP pin.

•

Configurable Off-Time PWM Chopping

10-, 20-, or 30-μs Off-Time

–

•

Adaptive Blanking Time for Smooth Stepping

4- to 18-V Operating Supply Voltage Range

1-A Continuous/RMS Output Current per H-Bridge

(at 25°C)

•

Low-Current Sleep Mode

3-Bit Torque DAC to Scale Motor Current

Thermally Enhanced Surface Mount Package

Protection Features

Internal protection functions are provided for UVLO,

overcurrent protection, short circuit protection, and

overtemperature. Fault conditions are indicated via a

nFAULT pin.

–

VM Undervoltage Lockout (UVLO)

Overcurrent Protection (OCP)

Thermal Shutdown (TSD)

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Fault Condition Indication Pin (nFAULT)

DRV8846

QFN (24)

4.00 × 4.00 mm

2 Applications

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

the end of the data sheet.

•

Printers

Scanners

Video Security Cameras

Projectors

4 Simplified Schematic

4 to 18 V

DRV8846

STEP/DIR

1 A

Step size

Decay Mode

nFAULT

Stepper

Motor Driver

1/32 µstep

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...35

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与DRV8846相关器件

型号	品牌	获取价格	描述	数据表
DRV8846_15	TI	获取价格	DRV8846 Dual H-Bridge Stepper Motor Driver
DRV8846RGER	TI	获取价格	DRV8846 Dual H-Bridge Stepper Motor Driver
DRV8846RGET	TI	获取价格	DRV8846 Dual H-Bridge Stepper Motor Driver
DRV8847	TI	获取价格	具有电流调节和独立半桥控制的 18V、2A 双路 H 桥电机驱动器
DRV8847PWPR	TI	获取价格	具有电流调节和独立半桥控制的 18V、2A 双路 H 桥电机驱动器 \| PWP \| 16
DRV8847PWR	TI	获取价格	具有电流调节和独立半桥控制的 18V、2A 双路 H 桥电机驱动器 \| PW \| 16 \|
DRV8847RTER	TI	获取价格	具有电流调节和独立半桥控制的 18V、2A 双路 H 桥电机驱动器 \| RTE \| 16
DRV8847RTET	TI	获取价格	具有电流调节和独立半桥控制的 18V、2A 双路 H 桥电机驱动器 \| RTE \| 16
DRV8847SPWR	TI	获取价格	具有电流调节和独立半桥控制的 18V、2A 双路 H 桥电机驱动器 \| PW \| 16 \|
DRV8848	TI	获取价格	具有电流调节功能的 18V、2A、H 桥电机驱动器

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