JAJSU38
April 2024
DRV8215
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Device Comparison
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
Electrical Characteristics
6.6
I2C Timing Requirements
6.7
Timing Diagrams
6.8
Typical Operating Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
External Components
7.3.2
Summary of Features
7.3.3
Bridge Control
7.3.4
Current Sense and Regulation (IPROPI)
7.3.4.1
Current Sensing and Current Mirror Gain Selection
7.3.4.2
Current Regulation
7.3.4.2.1
Fixed Off-Time Current Regulation
7.3.4.2.2
Cycle-By-Cycle Current Regulation
7.3.5
Stall Detection
7.3.6
Motor Voltage and Speed Regulation
7.3.6.1
Internal Bridge Control
7.3.6.2
Setting Speed/Voltage Regulation Parameters
7.3.6.2.1
Speed and Voltage Set
7.3.6.2.2
Speed Scaling Factor
7.3.6.2.2.1
Target Speed Setting Example
7.3.6.2.3
Motor Resistance Inverse
7.3.6.2.4
Motor Resistance Inverse Scale
7.3.6.2.5
KMC Scaling Factor
7.3.6.2.6
KMC
7.3.6.2.7
VSNS_SEL
7.3.6.3
Soft-Start and Soft-Stop
7.3.6.3.1
TINRUSH
7.3.7
Protection Circuits
7.3.7.1
Overcurrent Protection (OCP)
7.3.7.2
Thermal Shutdown (TSD)
7.3.7.3
VCC Undervoltage Lockout (UVLO)
7.3.7.4
Overvoltage Protection (OVP)
7.3.7.5
nFAULT Output
7.4
Device Functional Modes
7.4.1
Active Mode
7.4.2
Low-Power Sleep Mode
7.4.3
Fault Mode
7.5
Programming
7.5.1
I2C Communication
7.5.1.1
I2C Write
7.5.1.2
I2C Read
8
Register Map
8.1
DRV8215_STATUS Registers
8.2
DRV8215_CONFIG Registers
8.3
DRV8215_CTRL Registers
9
Application and Implementation
9.1
Application Information
9.2
Typical Application: Brushed DC Motor
9.2.1
Design Requirements
9.2.2
Stall Detection
9.2.2.1
Application Description
9.2.2.1.1
Stall Detection Timing
9.2.2.1.2
Hardware Stall Threshold Selection
9.2.3
Motor Speed and Voltage Regulation Application
9.2.3.1
Tuning Parameters
9.2.3.1.1
Resistance Parameters
9.2.3.1.2
KMC and KMC_SCALE
9.2.3.1.2.1
Case I
9.2.3.1.2.2
Case II
9.2.3.1.2.2.1
Method 1: Tuning from Scratch
9.2.3.1.2.2.1.1
Tuning KMC_SCALE
9.2.3.1.2.2.1.2
Tuning KMC
9.2.3.1.2.2.2
Method 2: Using the Proportionality factor
9.2.3.1.2.2.2.1
Working Example
9.2.4
Motor Voltage
9.2.5
Motor Current
9.3
Power Supply Recommendations
9.3.1
Bulk Capacitance
9.4
Layout
9.4.1
Layout Guidelines
10
デバイスおよびドキュメントのサポート
10.1
ドキュメントの更新通知を受け取る方法
10.2
サポート・リソース
10.3
Trademarks
10.4
静電気放電に関する注意事項
10.5
用語集
11
Revision History
12
メカニカル、パッケージ、および注文情報
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)
RTE|16
MPQF149D
サーマルパッド・メカニカル・データ
RTE|16
QFND525B
発注情報
jajsu38_oa
jajsu38_pm
6.7
Timing Diagrams
Figure 6-1
Input-to-Output Timing Diagram
Figure 6-2
I
2
C Timing Diagram