JAJU633
October 2018
概要
リソース
特長
アプリケーション
デザイン・イメージ
1
System Description
1.1
Key System Specifications
2
System Overview
2.1
Block Diagram
2.2
Highlighted Products
2.2.1
TPS92692-Q1
2.3
LM74700
2.4
System Design Theory
2.4.1
Design Procedure
2.4.1.1
Operating Parameters, Duty Cycle
2.4.1.2
Setting the Switching Frequency
2.4.1.3
Inductor Value Calculation
2.4.1.4
Peak Inductor Current
2.4.1.5
Calculating RIS (R9)
2.4.1.6
Minimum Output Capacitance
2.4.1.7
Setting the LED Current
2.4.1.8
Soft-Start Capacitor
2.4.1.9
Overvoltage Protection (OVP)
2.4.1.10
Main N-Channel MOSFET Selection
2.4.1.11
Rectifier Diode Selection
2.4.1.12
Thermal Protection
2.4.2
Designing for Low EMI
2.4.2.1
EMI Performance
2.4.2.2
EMI Filter Design
2.4.2.2.1
Additional EMI Considerations
3
Hardware, Software, Testing Requirements, and Test Results
3.1
Required Hardware and Software
3.2
Testing and Results
3.2.1
Test Setup
3.2.2
Test Results
3.2.2.1
Nominal Operation Waveforms
3.2.2.1.1
Loop Stability Measurements Block Diagram
3.2.2.2
Efficiency and Line Regulation: Done for different power level for Boost (Hi Beam and Lo Beam) or Boost to Battery for Lo Beam only
3.2.2.3
Thermal Scan
4
Design Files
4.1
Schematics
4.2
Bill of Materials
4.3
Layout Prints
4.4
Altium Project
4.5
Gerber Files
4.6
Assembly Drawings
5
Related Documentation
5.1
商標
5
Related Documentation
Texas Instruments,
TPS92691/TPS92691-Q1 Multi-Topology LED Driver With Rail-to-Rail Current Sense Amplifier Data Sheet