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DRV8871EVM 其他数据使用手册 - TI（德州仪器）
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TI（德州仪器）
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开发套件
描述:
TEXAS INSTRUMENTS DRV8871EVM 评估电路板, 无刷直流电机驱动器
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3D模型
符号图
焊盘图
引脚图
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引脚图在P3Hot
典型应用电路图在P11
原理图在P1P7
封装尺寸在P18P20P21
焊盘布局在P15
标记信息在P18
封装信息在P17P18P19P20P21
技术参数、封装参数在P3
应用领域在P1P25
电气规格在P5
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DRV8871EVM数据手册
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6.5 to 45 V
DRV8871
Brushed DC
Motor Driver
ILIM
3.6 A
BDC
Fault
Protection
Current
Sense and
Regulation
IN1
IN2
Controller
Copyright © 2016, Texas Instruments Incorporated
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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.
DRV8871
SLVSCY9B –AUGUST 2015–REVISED JULY 2016
DRV8871 3.6-A Brushed DC Motor Driver With Internal Current Sense (PWM Control)
1
1 Features
1
• H-Bridge Motor Driver
– Drives One DC Motor, One Winding of a
Stepper Motor, or Other Loads
• Wide 6.5-V to 45-V Operating Voltage
• 565-mΩ Typical R
DS(on)
(HS + LS)
• 3.6-A Peak Current Drive
• PWM Control Interface
• Current Regulation Without a Sense Resistor
• Low-Power Sleep Mode
• Small Package and Footprint
– 8-Pin HSOP With PowerPAD™
– 4.9 × 6 mm
• Integrated Protection Features
– VM Undervoltage Lockout (UVLO)
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
– Automatic Fault Recovery
2 Applications
• Printers
• Appliances
• Industrial Equipment
• Other Mechatronic Applications
3 Description
The DRV8871 device is a brushed-DC motor driver
for printers, appliances, industrial equipment, and
other small machines. Two logic inputs control the H-
bridge driver, which consists of four N-channel
MOSFETs that can control motors bidirectionally with
up to 3.6-A peak current. The inputs can be pulse-
width modulated (PWM) to control motor speed, using
a choice of current-decay modes. Setting both inputs
low enters a low-power sleep mode.
The DRV8871 device has advanced current-
regulation circuitry that does not use an analog
voltage reference or external sense resistor. This
novel solution uses a standard low-cost, low-power
resistor to set the current threshold. The ability to limit
current to a known level can significantly reduce the
system power requirements and bulk capacitance
needed to maintain stable voltage, especially for
motor startup and stall conditions.
The device is fully protected from faults and short
circuits, including undervoltage (UVLO), overcurrent
(OCP), and overtemperature (TSD). When the fault
condition is removed, the device automatically
resumes normal operation.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
DRV8871 HSOP (8) 4.90 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Peak Current Regulation
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