Datasheet

LTM4618
18
4618fa
APPLICATIONS INFORMATION
4618 F18
VIDEO BANDWIDTH
150kHz
10dB/µV
PER DIV
100MHz
Figure 18. V
IN
26.5V, V
OUT
3.3V, I
OUT
5A,
π Filter 20μF to 0.22μH Vishay (1616BZ) to 20μF
CISPR25 Conducted Emissions
4618 F19a
FREQUENCY (MHz)
0 1000900800700600500400
5
15
25
35
45
55
300200100
AMPLITUDE (dBµV/m)
CISPR22
CLASS A
Figure 19. V
IN
26.5V, V
OUT
3.3V, I
OUT
5A,
π Filter 20μF to 0.22μH Vishay (1616BZ) to 20μF
CISPR22 Radiated EMI Plots
4618 F19b
FREQUENCY (MHz)
0 1000900800700600500400
5
15
25
35
45
55
300200100
AMPLITUDE (dBµV/m)
CISPR22
CLASS B
Figure 17. 6V to 26.5V Input, 3.3V at 6A Design,
Meeting CISPR25 Conducted and CISPR22 Radiated EMI Solution
4618 F17
V
IN
COMP
TK/SS
RUN
FREQ
V
OUT
V
FB
PGOOD
VISHAY INLP1616BZERR22M01
π FILTER
MODE/PLLININTV
CC
EXTV
CC
LTM4618
SGND
0.22µH
PGND SW
19.1k
C
OUT
100µF
s3
C
SNUB
470pF
0805, 50V
R
SNUB
1.2Ω 0805
C2
47pF
V
OUT
3.3V/6A
C1
0.1µF
C
IN
10µF
s2
10µF
s2
V
IN
6V TO 26.5V
R2
R1
V
IN
V
IN
•
R2
R1R2
¥
§
¦
´
¶
µ
r1.22V