ZHCSWR1H
December 2009 – July 2024
DRV8412
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Package Heat Dissipation Ratings
5.6
Package Power Deratings (DRV8412) #GUID-2A6DB468-D895-404F-A2E6-05A442AE2834/SLES2429141
5.7
Electrical Characteristics
5.8
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Error Reporting
6.3.2
Device Protection System
6.3.2.1
Bootstrap Capacitor Undervoltage Protection
6.3.2.2
Overcurrent (OC) Protection
6.3.2.3
Overtemperature Protection
6.3.2.4
Undervoltage Protection (UVP) and Power-On Reset (POR)
6.3.3
Device Reset
6.4
Device Functional Modes
Application and Implementation
7.1
Application Information
7.2
Typical Applications
7.2.1
Full Bridge Mode Operation
7.2.1.1
Design Requirements
7.2.1.2
Detailed Design Procedure
7.2.1.2.1
Motor Voltage
7.2.1.2.2
Current Requirement of 12V Power Supply
7.2.1.2.3
Voltage of Decoupling Capacitor
7.2.1.2.4
Overcurrent Threshold
7.2.1.2.5
Sense Resistor
7.2.1.3
Application Curves
7.2.2
Parallel Full Bridge Mode Operation
7.2.3
Stepper Motor Operation
7.2.4
TEC Driver
7.2.5
LED Lighting Driver
7.3
Power Supply Recommendations
7.3.1
Bulk Capacitance
7.3.2
Power Supplies
7.3.3
System Power-Up and Power-Down Sequence
7.3.3.1
Powering Up
7.3.3.2
Powering Down
7.3.4
System Design Recommendations
7.3.4.1
VREG Pin
7.3.4.2
VDD Pin
7.3.4.3
OTW Pin
7.3.4.4
Mode Select Pin
7.3.4.5
Parallel Mode Operation
7.3.4.6
TEC Driver Application
7.4
Layout
7.4.1
Layout Guidelines
7.4.1.1
PCB Material Recommendation
7.4.1.2
Ground Plane
7.4.1.3
Decoupling Capacitor
7.4.1.4
AGND
7.4.2
Layout Example
7.4.2.1
Current Shunt Resistor
7.4.3
Thermal Considerations
7.4.3.1
DRV8412 Thermal Via Design Recommendation
7
Device and Documentation Support
7.1
接收文档更新通知
7.2
支持资源
7.3
Trademarks
7.4
静电放电警告
7.5
术语表
8
Revision History
9
Mechanical, Packaging, and Orderable Information
1
特性
具有低 R
DS(on)
MOSFET(T
J
= 25°C 时为 110mΩ)的高效功率级(高达 97%)
工作电源电压高达 52V
DRV8412 (电源焊盘朝下):在双路全桥模式下提供高达 2 × 3A 持续输出电流(峰值为 2 × 6A),在并行模式下提供高达 6A 持续电流(峰值为 12A)
DRV8432 (电源焊盘朝上):在双路全桥模式下提供高达 2 × 7A 持续输出电流(峰值为 2 × 12A),在并行模式下提供高达 14A 持续电流(峰值为 24A)
PWM 工作频率高达 500kHz
包含欠压、过热、过载和短路保护的集成自保护电路
可编程逐周期电流限制保护
针对每个半桥的独立电源和接地引脚
智能栅极驱动和跨导保护
无需外部缓冲器或肖特基二极管
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