0
5
10
15
20
25
30
35
40
45
50
30M
50
60
80
100M
200
300
400
500
800
1G
L
e
v
e
l i
n
d
B
µ
V
/m
Frequency in Hz
CIS PR 25_C LAS S 5_Average
CIS PR 25_C LAS S 5_Pe ak
Test Data and Performance Curves
14
SNVU592D – July 2018 – Revised April 2020
Copyright © 2018–2020, Texas Instruments Incorporated
LM5180-Q1 Single-Output EVM User's Guide
For both conducted and radiated emissions measurements, the transformer core is shielded using a
copper strap tied to primary GND.
Figure 15. CISPR 25 Class 5 Radiated Emissions Plot, V
IN
= 13.5 V, I
OUT
= 0.5 A
