SLUUD39B
May 2024 – November 2024
UCC33421-Q1
1
Description
Features
Applications
5
1
Evaluation Module Overview
1.1
Introduction
1.2
Kit Contents
1.3
Device Information
1.3.1
U1 Component Selection
1.3.2
UCC33421-Q1 Pin Definition
1.4
Specification
2
Hardware
2.1
EVM Setup and Operation
2.1.1
Recommended Test Equipment
2.1.2
External Connections for Easy Evaluation
2.1.3
Powering the EVM
2.1.3.1
Power on for Start-up
2.1.3.2
Power off for Shutdown
2.1.4
EVM Test Points
2.1.5
Oscilloscope Probes: Probing the EVM
3
Implementation Results
3.1
Schematic
3.2
Performance Data
3.2.1
Efficiency Data
3.2.2
Regulation Data
3.2.3
Startup Waveforms
3.2.4
Inrush Current
3.2.5
AC Ripple Voltage
3.2.6
Load Transient
3.2.7
VCC Short-Circuit
3.2.8
Thermal Performance
4
Hardware Design Files
4.1
Assembly and Printed Circuit Board (PCB)
4.2
Bill of Materials (BOM)
5
Additional Information
5.1
Trademarks
6
Revision History
2.1.1
Recommended Test Equipment
V
EN
: DC power supply1: 5.0V, 10mA
VINP: DC power supply2: 5.0V, 1A
I
out
: Electronic load or fixed resistor: 5V, 500mA
(2) DVMs measuring DC voltage <10V
(2) DVMs measuring DC current <1.0A on I
VINP
and I
out
Oscilloscope: 4 channel, 500MHz or better, voltage probes, current probes
Minimum wire gauge 20 AWG to 22 AWG or heavier
Thermal camera or thermocouple to measure U1 case temperature