SNVU872A
September 2023 – March 2024
LM70880-Q1
1
Description
Features
Applications
5
1
Evaluation Module Overview
1.1
Introduction
1.2
Kit Contents
1.3
Specification
1.4
Device Information
2
Hardware
2.1
Test Setup and Procedure
2.1.1
EVM Connections
2.1.2
Test Equipment
2.1.3
Recommended Test Setup
2.1.3.1
Input Connections
2.1.3.2
Output Connections
2.1.4
Test Procedure
2.1.4.1
Line and Load Regulation, Efficiency
3
Implementation Results
3.1
Performance Data and Results
3.1.1
EVM Characteristics
3.1.2
Conversion Efficiency
3.1.3
Operating Waveforms
3.1.3.1
Switching
3.1.3.2
Load Transient Response
3.1.3.3
Line Transient Response
3.1.3.4
Start-Up and Shutdown With EN
3.1.3.5
Start-Up with VIN
3.1.4
Bode Plot
3.1.5
CISPR 25 EMI Performance
3.1.6
Thermal Performance
4
Hardware Design Files
4.1
Schematic
4.2
PCB Layout
4.2.1
Component Drawings
4.2.2
Multi-Layer Stackup
4.3
Bill of Materials
5
Compliance Information
5.1
Compliance and Certifications
6
Related Documentation
6.1
Supplemental Content
6.1.1
Development Support
6.1.2
PCB Layout Resources
6.1.3
Thermal Design Resources
7
Additional Information
7.1
Trademarks
8
Revision History
3.1.2
Conversion Efficiency
The curves with higher efficiency at light load correspond to when diode emulation is enabled (PFM tied to VDDA).
Figure 3-1
Efficiency,V
IN
= 48V, V
OUT
= 5V
The curves with higher efficiency at light load correspond to when diode emulation is enabled (PFM tied to VDDA).