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
5.6
AC Ripple Voltage
Figure 5-13
VDD
AC
=240 mV, VEE
AC
=100 mV, I
VDD
=68 mA, I
VEE
=30 mA (top: VDD-VEE, 100 mV/div, bot: COM-VEE, 50 mV/div), time = 100 ms/div
Figure 5-14
AC Ripple: VIN=12 V, IVDD=68 mA, IVEE=30 mA (top: VDD-VEE, 100 mV/div, bot: COM-VEE, 50 mV/div), time = 100 µs/div
Figure 5-15
AC Ripple: VIN=12 V, IVDD=68 mA, IVEE=30 mA, FMOD=20.8 kHz (top: VDD-VEE, 100 mV/div, bot: COM-VEE, 50 mV/div), time = 10 µs/div
Figure 5-16
AC Ripple: VIN=12 V, IVDD=68 mA, FSW(PRI)=15.24 kHz (VDD-VEE, 50 mV/div, Zoom: VDD-VEE, 10 mV/div), time = 5 µs/div, time_zoom=50 ns/div
Figure 5-17
AC Ripple: VIN=12 V, IVDD=68 mA, FBURST=1 MHz (VDD-VEE, 50 mV/div, Zoom: VDD-VEE, 10 mV/div), time = 5 µs/div, time_zoom=200 ns/div