TIDUF03
December 2022
Description
Resources
Features
Applications
5
1
System Description
1.1
Key System Specifications
2
System Overview
2.1
Block Diagram
2.2
System Design Theory
2.2.1
Detection Principals
2.2.2
Saturation
2.2.3
General Mode of Operation
2.3
Highlighted Products
2.3.1
DRV8220
2.3.2
OPAx202
2.3.3
TLVx172
2.3.4
TLV7011
2.3.5
INA293
2.3.6
SN74LVC1G74
2.3.7
TLV767
3
Hardware, Software, Testing Requirements, and Test Results
3.1
Hardware
3.1.1
Board Overview
3.1.2
Filter Stage
3.1.3
Differential to Single-Ended Converter
3.1.4
Low-Pass Filter
3.1.5
Full-Wave Rectifier
3.1.6
DC Offset Circuit
3.1.7
Auto-Oscillation Circuit
31
3.1.8
DRV8220 H-Bridge
3.1.9
Saturation Detection Circuit
3.1.10
H-Bridge Controlled by DFF
3.1.11
MCU Selection
3.1.12
Move Away From Timer Capture
3.1.13
Differentiating DC and AC From the Same Signal
3.1.14
Fluxgate Sensor
3.2
Software Requirements
3.2.1
Software Description for Fault Detection
3.3
Test Setup
3.3.1
Ground-Fault Simulation
3.4
Test Results
3.4.1
Linearity Over Temperature
3.5
Fault Response Results
4
Design and Documentation Support
4.1
Design Files
4.1.1
Schematics
4.1.2
BOM
4.2
Documentation Support
4.3
Support Resources
4.4
Trademarks
5
About the Author
Resources
TIDA-010237
Design Folder
DRV8220
Product Folder
MSP430F5132
,
OPA202
Product Folder
INA293
,
SN74LVC2G74
Product Folder
TLV7011
,
TLV172
Product Folder
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