Texas Instruments LM61460EVM, User Manual, Page: 14 / 26

Figure 6-5. Radiated EMI Measurement with
Horizontal Log Antenna Under CISPR 25 Class 5
Limits
Figure 6-6. Radiated EMI Measurement with
Vertical Log Antenna Under CISPR 25 Class 5
Limits
Figure 6-7. Radiated EMI Measurement with Rod Antenna Under CISPR 25 Class 5 Limits
6.2 Board Efficiency
This section provides efficiency plots for the board with LMQ61460AAS populated for Auto mode efficiency and
LMQ61460AFS populated for FPWM mode efficiency. For 2.1-MHz data, the output stage has to be changed
from the default BOM. The inductor (L1) selected was XEL5030-102MEB.
Load Current (A)
Ef
fic
ie
nc
y
(%
)
0.0001 0.001 0.01 0.1 0.2 0.5 1 2 3 5 710
60%
65%
70%
75%
80%
85%
90%
95%
100%
LM61
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-8. F
SW
= 400 kHz, 5 VOUT, Auto Mode
Load Current (A)
Ef
fic
ie
nc
y
(%
)
0 1 2 3 4 5 6 7
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
100%
LM61
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-9. F
SW
= 400 kHz, 5 VOUT, FPWM Mode
LM61460EVM Board Test Results www.ti.com
14 LM61460-Q1 EVM User's Guide SNVU621D – MAY 2019 – REVISED JULY 2021
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