SLUUCE8A
February 2021 – October 2021
UCC25800-Q1
Trademarks
1
Description
2
Electrical Performance Specifications
3
Schematic Diagram
4
Description - How to Use
4.1
Typical Applications
4.2
Using the EVM with on-board Pre-regulator on Board
4.3
Using the EVM with an External DC Voltage Source
5
Test Setup
5.1
Test Setup Requirements
5.2
Test Setup Diagram
5.3
Test Points and Input / Output Terminals
6
Performance Data and Typical Characteristic Curves
6.1
Efficiency Result of the LLC Board with External DC Input Voltage
6.2
Efficiency Result of the LLC Board with Pre-regulator on Board
6.3
Efficiency Typical Results
6.4
Output Characteristics
6.5
Output Voltage Turn-on at Start Up
6.6
Output Ripple Voltage
6.7
Frequency Synchronized to External Signal
6.8
DIS-pin Enable and Dis-Enable
6.9
Load Transient Response
6.10
Switch-node Voltage and Current
6.11
Over-Current Limit and FLT-pin
6.12
CISPR-25 Class-5 Conducted EMI Test Result - Pass
6.13
Thermal Images at Full Load
7
Transformer Details
8
EVM Assembly and Layout
9
List of Materials
10
Revision History
6.5
Output Voltage Turn-on at Start Up
Figure 6-5
No-Load Startup (Yellow = 18V, Red = -5V)
Figure 6-6
Full-Load Startup (Yellow = 18V, Red = -5V)