Texas Instruments LM25180-Q1, User Manual

Page: 2 / 28

www.ti.com
2 SNVU609B – October 2018 – Revised April 2020
Submit Documentation Feedback
Copyright © 2018–2020, Texas Instruments Incorporated
LM5180-Q1 Dual-Output EVM User's Guide
Contents
1 High Density EVM Description
.............................................................................................
3
2 EVM Performance Characteristics
.........................................................................................
4
3 Application Circuit Diagram
.................................................................................................
5
4 EVM Photo
....................................................................................................................
5
5 Test Setup and Procedure
..................................................................................................
6
6 Test Data and Performance Curves
.......................................................................................
8
7 EVM Documentation
.......................................................................................................
15
8 Device and Documentation Support
.....................................................................................
20
List of Figures
1 LM5180 PSR Flyback Dual-Output Schematic
..........................................................................
5
2 Dual-Output EVM Photo, 55 mm × 38 mm
...............................................................................
5
3 EVM Test Setup
.............................................................................................................
6
4 Conversion Efficiency (Linear Scale), Outputs Loaded Symmetrically
...............................................
8
5 Conversion Efficiency (Log Scale), Outputs Loaded Symmetrically
..................................................
8
6 Load Regulation (Linear Scale), Sum of V
OUT1
and V
OUT2
Measured, Outputs Loaded Symmetrically
............
9
7 Load Regulation (Log Scale), Sum of V
OUT1
and V
OUT2
Measured, Outputs Loaded Symmetrically
...............
9
8 SW Node Voltage, I
OUT1
= –I
OUT2
= 200 mA, V
IN
= 24 V
................................................................
10
9 SW Node Voltage, I
OUT1
= –I
OUT2
= 200 mA, V
IN
= 48 V
................................................................
10
10 Flyback Diode Voltages, I
OUT1
= –I
OUT2
= 200 mA, V
IN
= 24 V
.........................................................
11
11 Flyback Diode Voltages, I
OUT1
= –I
OUT2
= 200 mA, V
IN
= 48 V
.........................................................
11
12 Output 1 Load Transient, 50 mA to 200 mA at 100mA/µs, I
OUT2
= –200 mA, V
IN
= 24 V
..........................
12
13 Output 2 Load Transient, 50 mA to 200 mA at 100mA/µs, I
OUT1
= 200 mA, V
IN
= 24 V
...........................
12
14 Start-Up, V
IN
= 24 V, I
OUT1
= –I
OUT2
= 200 mA Resistive
................................................................
13
15 Enable On, V
IN
= 24 V, I
OUT1
= –I
OUT2
= 200 mA Resistive
.............................................................
13
16 Short Circuit Recovery, V
IN
= 24 V, I
OUT1
= –I
OUT2
= 200 mA Resistive
...............................................
14
17 EVM Schematic
............................................................................................................
15
18 Top Copper (Top View)
...................................................................................................
17
19 Bottom Copper (Top View)
................................................................................................
17
20 Top Assembly
...............................................................................................................
18
21 Bottom Assembly
...........................................................................................................
18
22 Layout Design Tips for a Dual-output PSR Flyback Converter
......................................................
19
List of Tables
1 PSR Flyback DC/DC Converter Family
...................................................................................
1
2 Electrical Performance Characteristics
...................................................................................
4
3 EVM Connections
............................................................................................................
6
4 Bill of Materials
.............................................................................................................
16
Trademarks
WEBENCH is a registered trademark of Texas Instruments.
All other trademarks are the property of their respective owners.