SLUUCU2A
March 2023 – September 2023
UCC14130-Q1
,
UCC14131-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 and Timing
5.8
RLIM
5.9
Shutdown
5.10
Thermal Performance
6
Assembly and Printed Circuit Board (PCB) Layers
7
Bill of Materials (BOM)
8
Revision History
4.3.1
Power on for Start-up
Verify VIN and 5-V DC bias power supplies are OFF/disabled and no voltage is applied to the UUT
Move EN shorting jumper, SH-J1, to the J2:2-3 EN ON position
Turn on the V
IN
DC power supply. Verify 12-V is present at VIN(TP7)-to-GNDP(TP10)
Verify the loads on VDD and VEE are disabled
Turn on the 5-V DC bias power supply. EVM is now enabled with VDD and +5V in regulation under no load conditions.
Verify 12-V is present on VDD-VEE and 5-V is present on [+5V](TP3)-GNDS(TP1)
Enable the 100-mA load on VDD-(+5V), enable the 10-mA load on [+5V]-GNDS
The UCC14131-Q1 is now regulating VDD and VEE and processing 1.5-W of isolated output power
Vary VIN between 11.2 V<V
IN
<14 V, vary I
VDD
between 0 mA<I
VDD
<130 mA, vary I
VEE
between 0 mA<I
[+5V]
<30 mA.
Insert oscilloscope probes into VIN(TP9), [+12V](TP6) and [+5V](TP3) for measuring V
IN
, [+12V] and [+5V] start-up, steady state and AC ripple voltage