TIDUF39
March 2025
1
Description
Resources
Features
Applications
6
1
System Description
1.1
Key System Specifications
2
System Overview
2.1
Block Diagram
2.2
Design Considerations
2.3
Highlighted Products
2.3.1
DAC70502: Dual-Channel, 1-LSB INL, 14-Bit, SPI Voltage-Output Digital-to-Analog Converter (DAC)
2.3.2
INA818: 35μV Offset, 8nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier
2.3.3
OPA192: High-Voltage, Rail-to-Rail Input/Output, 5µV, 0.2µV/°C, Precision Operational Amplifier
2.3.4
LM5146: 100V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range
3
System Design Theory
3.1
Constant Current Control Design
3.2
Constant Current and Voltage Simulation
4
Hardware, Software, Testing Requirements, and Test Results
4.1
Hardware Requirements
4.2
Software Requirements
4.3
Test Setup
4.3.1
Constant Current Test Setup
4.3.2
Constant Voltage Test Setup
4.4
Test Results
4.4.1
Current Control Accuracy
4.4.2
Voltage Control Accuracy
4.4.3
CC, CV Transformation
4.4.4
Constant Current Transient Response
4.4.5
Constant Voltage Transient Response
4.4.6
Voltage Ripple at Short Circuit
4.4.7
Tracking DC-DC output
5
Design and Documentation Support
5.1
Design Files
5.1.1
Schematics
5.1.2
BOM
5.2
Tools and Software
5.3
Documentation Support
5.4
Support Resources
5.5
Trademarks
6
About the Author
5.1.2
BOM
To download the bill of materials (BOM), see the design files at
TIDA-010089
.