SLUUCS5A
january 2023 – july 2023
UCC14141-Q1
1
Abstract
Trademarks
1
Introduction
1.1
U1 Component Selection
1.2
Pin Configuration and Functions
2
Description
2.1
EVM Electrical Performance Specifications
3
Schematic
4
EVM Setup and Operation
4.1
Recommended Test Equipment
4.2
External Connections for Easy Evaluation
4.3
Powering the EVM
4.3.1
Power on for Start-up
4.3.2
Power off for Shutdown
4.4
EVM Test Points
4.5
Probing the EVM
5
Performance Data
5.1
Efficiency Data
5.2
Regulation Data
5.3
Steady State Input Current
5.4
Start-up Waveforms
5.5
Inrush Current
5.6
AC Ripple Voltage
5.7
EN-to-/PG Timing
5.8
RLIM
5.9
Fault Protection
5.9.1
Output UVLO
5.9.2
Output OVP
5.10
Shutdown
5.11
Thermal Performance
6
Assembly and Printed Circuit Board (PCB) Layers
7
Bill of Materials (BOM)
8
Revision History
4.1
Recommended Test Equipment
V
BIAS
: DC power supply1: 5 V, 10 mA
V
IN
: DC power supply: 20 V, 500 mA
I
VDD
: Electronic load or fixed resistor: 25 V, 200 mA
I
VEE
: Electronic load or fixed resistor: 5 V, 50 mA
(3) DVMs measuring DC voltage < 30 V (V3 in must be a battery powered DVM)
(3) DVMs measuring DC current < 200 mA on I
VDD
, I
VEE
, <300 mA on I
VIN
Oscilloscope: 4 channel, 500 MHz or better, voltage probes, current probes
Minimum wire gauge 20 AWG to 22 AWG or better
Thermal camera (optional) or thermocouple to measure U1 case temperature