TIDUEY7
July 2021
Description
Resources
Features
Applications
5
1
System Description
2
System Overview
2.1
Block Diagram
2.2
Design Considerations
2.2.1
System Control and Processing
2.2.2
Analog Front End
2.2.3
Input Voltage Monitoring: 5 V, 20 V, 40 V, and ±5 V
2.2.4
Bidirectional Current Sense: ±2 A
2.2.5
Unipolar Current Sense: 0.25 A to 1 A
2.2.6
TMP461-SP: Local and Remote Temperature Sensing
2.2.7
NTC Thermistor Temperature Sensing
2.2.8
Adjustable Voltage Source
2.2.9
Fixed Output Current Source
2.2.10
Adjustable 4-mA Current Source
2.2.11
Power Tree and Power Sequencing
2.3
Highlighted Products
2.3.1
MSP430FR5969-SP
2.3.2
ADC128S102QML-SP
2.3.3
DAC121S101QML-SP
2.3.4
LMP7704-SP
2.3.5
INA901-SP
2.3.6
LM4050QML-SP
2.3.7
LM158QML-SP
2.3.8
LM139QML-SP
2.3.9
TMP461-SP
2.3.10
TPS7A4501-SP
2.3.11
TPS7H2201-SP
3
Hardware, Software, Testing Requirements, and Test Results
3.1
Required Hardware and Software
3.1.1
Hardware
3.1.2
Software
3.2
Test Setup
3.2.1
Voltage Monitor Test Setup
3.2.2
Current Monitor Test Setup
3.3
Test Results
3.3.1
Voltage Measurement - Noise Floor Results
3.3.2
Voltage Measurement - Linearity Results
3.3.3
Current Measurement - Noise Floor Results
3.3.4
Current Measurement - Linearity Results
3.3.5
Analog Outputs
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
3.3.2
Voltage Measurement - Linearity Results
Figure 3-8
Linearity Plot (5-V Range)
Figure 3-10
Linearity Plot (20-V Range)
Figure 3-9
Linearity Plot (±5-V Range)
Figure 3-11
Linearity Plot (40-V Range)