Texas Instruments LM61460EVM, User Manual

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6.3 Load Regulation
This section provides efficiency plots for the board with LM61460AAS populated for Auto mode efficiency and
LM61460AFS populated for FPWM mode efficiency. For 2-MHz data, the output stage has to be changed from
the default BOM. The inductor (L1) selected was XEL5030-102MEB.
Output Current (A)
O
ut
p
u
t
Vo
lt
a
ge
(V
)
0 1 2 3 4 5 6 7
4.95
4.97
4.99
5.01
5.03
5.05
5.07
5.09
5.11
SNVS
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-16. F
SW
= 400 kHz, 5 VOUT, Auto Mode
Output Current (A)
O
ut
p
u
t
Vo
lt
a
ge
(V
)
0 1 2 3 4 5 6 7
4.95
4.97
4.99
5.01
5.03
5.05
5.07
5.09
5.11
SNVS
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-17. F
SW
= 400 kHz, 5 VOUT, FPWM Mode
Output Current (A)
O
u
tpu
t Vo
ltag
e
(V
)
0 1 2 3 4 5 6 7
3.29
3.31
3.33
3.35
3.37
SNVS
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-18. F
SW
= 400 kHz, 3.3 VOUT, Auto Mode
Output Current (A)
O
ut
p
u
t
Vo
lt
a
ge
(V
)
0 1 2 3 4 5 6 7
3.29
3.31
3.33
3.35
3.37
SNVS
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-19. F
SW
= 400 kHz, 3.3 VOUT, FPWM Mode
Output Current (A)
O
ut
p
u
t
Vo
lt
a
ge
(V
)
0 1 2 3 4 5 6 7
4.95
4.97
4.99
5.01
5.03
5.05
5.07
5.09
5.11
SNVS
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-20. F
SW
= 2.2 MHz, 5 VOUT, Auto Mode
Output Current (A)
O
ut
p
u
t
Vo
lt
a
ge
(V
)
0 1 2 3 4 5 6 7
4.95
4.97
4.99
5.01
5.03
5.05
5.07
5.09
5.11
SNVS
V
IN
= 8 V
V
IN
= 13.5 V
V
IN
= 24 V
Figure 6-21. F
SW
= 2.2 MHz, 5 VOUT, FPWM Mode
LM61460EVM Board Test Results www.ti.com
16 LM61460-Q1 EVM User's Guide SNVU621D – MAY 2019 – REVISED JULY 2021
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