JAJSSE7
November 2023
DRV8214
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Device Comparison
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
I2C Timing Requirements
7.7
Timing Diagrams
7.8
Typical Operating Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
External Components
8.3.2
Summary of Features
8.3.3
Bridge Control
8.3.4
Current Sense and Regulation (IPROPI)
8.3.4.1
Current Sensing and Current Mirror Gain Selection
8.3.4.2
Current Regulation
8.3.4.2.1
Fixed Off-Time Current Regulation
8.3.4.2.2
Cycle-By-Cycle Current Regulation
8.3.5
Stall Detection
8.3.6
Ripple Counting
8.3.6.1
Ripple Counting Parameters
8.3.6.1.1
Motor Resistance Inverse
8.3.6.1.2
Motor Resistance Inverse Scale
8.3.6.1.3
KMC Scaling Factor
8.3.6.1.4
KMC
8.3.6.1.5
Filter Damping Constant
8.3.6.1.6
Filter Input Scaling Factor
8.3.6.1.7
Ripple Count Threshold
8.3.6.1.8
Ripple Count Threshold Scale
8.3.6.1.9
T_MECH_FLT
8.3.6.1.10
VSNS_SEL
8.3.6.1.11
Error Correction
8.3.6.1.11.1
EC_FALSE_PER
8.3.6.1.11.2
EC_MISS_PER
8.3.6.2
RC_OUT Output
8.3.6.3
Ripple Counting with nFAULT
8.3.7
Motor Voltage and Speed Regulation
8.3.7.1
Internal Bridge Control
8.3.7.2
Setting Speed/Voltage Regulation Parameters
8.3.7.2.1
Speed and Voltage Set
8.3.7.2.2
Speed Scaling Factor
8.3.7.3
Soft-Start and Soft-Stop
8.3.7.3.1
TINRUSH
8.3.8
Protection Circuits
8.3.8.1
Overcurrent Protection (OCP)
8.3.8.2
Thermal Shutdown (TSD)
8.3.8.3
VCC Undervoltage Lockout (UVLO)
8.3.8.4
Overvoltage Protection (OVP)
8.3.8.5
nFAULT Output
8.4
Device Functional Modes
8.4.1
Active Mode
8.4.2
Low-Power Sleep Mode
8.4.3
Fault Mode
8.5
Programming
8.5.1
I2C Communication
8.5.1.1
I2C Write
8.5.1.2
I2C Read
8.6
Register Map
8.6.1
DRV8214_STATUS Registers
8.6.2
DRV8214_CONFIG Registers
8.6.3
DRV8214_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
Ripple Counting Application
9.2.3.1
Tuning Ripple Counting 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
9.2.3.1.3
Advanced Parameters
9.2.3.1.3.1
Filter Constants
9.2.3.1.3.1.1
FLT_GAIN_SEL
9.2.3.1.3.1.2
FLT_K
9.2.3.1.3.2
T_MECH_FLT
9.2.3.1.3.3
VSNS_SEL
9.2.3.1.3.4
Additional Error Corrector Parameters
9.2.3.1.3.4.1
EC_FALSE_PER
9.2.3.1.3.4.2
EC_MISS_PER
9.2.4
Motor Voltage
9.2.5
Motor Current
9.2.6
Application Curves
10
Power Supply Recommendations
10.1
Bulk Capacitance
11
Layout
11.1
Layout Guidelines
12
Mechanical, Packaging, and Orderable Information
12.1
Tape and Reel 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)
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
jajsse7_oa
7.8
Typical Operating Characteristics
Figure 7-3
High-Side MOSFET On Resistance (mΩ)
Figure 7-5
Low-Side MOSFET On Resistance (mΩ) with GAINSEL=Hi-Z (010b)
Figure 7-4
Low-Side MOSFET On Resistance (mΩ) with GAINSEL=Low (000b)
Figure 7-6
Low-Side MOSFET On Resistance (mΩ) with GAINSEL=High (110b)