JAJSOO7F
May 2010 – May 2022
DRV8312
,
DRV8332
PRODUCTION DATA
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Dissipation Ratings
6.6
Power Deratings (DRV8312)
6.7
Electrical Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Error Reporting
7.3.2
Device Protection System
7.3.2.1
Bootstrap Capacitor Undervoltage Protection
7.3.2.1.1
Overcurrent (OC) Protection
7.3.2.2
Overtemperature Protection
7.3.2.3
Undervoltage Protection (UVP) and Power-On Reset (POR)
7.3.2.4
Device Reset
7.4
Device Functional Modes
7.4.1
Different Operational Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Three-Phase Operation
8.2.1.1
設計要件
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Motor Voltage
8.2.1.2.2
Current Requirement of 12 V Power Supply
8.2.1.2.3
Voltage of Decoupling Capacitor
8.2.1.2.4
Overcurrent Threshold
8.2.1.2.5
Sense Resistor
8.2.1.2.6
Output Inductor Selection
8.2.1.3
Application Curves
8.2.2
DRV8312 Application Diagram for Three-Phase Operation
8.2.3
Control Signal Logic With Conventional 6 PWM Input Scheme
8.2.4
Hall Sensor Control With 6 Steps Trapezoidal Scheme
8.2.5
Sensorless Control With 6 Steps Trapezoidal Scheme
9
Power Supply Recommendations
9.1
Bulk Capacitance
9.2
System Power-Up and Power-Down Sequence
9.2.1
Powering Up
9.2.2
Powering Down
9.3
System Design Recommendations
9.3.1
VREG Pin
9.3.2
VDD Pin
9.3.3
OTW Pin
9.3.4
FAULT Pin
9.3.5
OC_ADJ Pin
9.3.6
PWM_X and RESET_X Pins
9.3.7
Mode Select Pins
10
Layout
10.1
Layout Guidelines
10.1.1
PCB Material Recommendation
10.1.2
Ground Plane
10.1.3
Decoupling Capacitor
10.1.4
AGND
10.2
Layout Example
10.2.1
Current Shunt Resistor
10.2.1.1
66
10.3
Thermal Considerations
10.3.1
Thermal Via Design Recommendation
11
Device and Documentation Support
11.1
Related Links
11.2
Trademarks
11.3
Electrostatic Discharge Caution
11.4
Glossary
12
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
DDW|44
MPDS309B
サーマルパッド・メカニカル・データ
DDW|44
PPTD165B
発注情報
jajsoo7f_oa
jajsoo7f_pm
8.2.1.1
設計要件
このセクションでは、設計要件を説明します。
表 8-1 設計パラメータ
設計パラメータ
略号
値の例
モーター電圧
PVDD_x
24V
モーター電流 (ピークおよび RMS)
I
PVDD
6A ピーク、3A RMS
過電流スレッショルド
OC
TH
OC_ADJ = 27kΩ、9.7A
過電流時の動作
OC
M1 = 0、サイクルごと