LTM4618(RevA) 데이터 시트보기 (PDF) - Linear Technology

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LTM4618
(Rev.:RevA)

6A DC/DC µModule Regulator with Tracking and Frequency Synchronization

Linear Technology 

LTM4618

APPLICATIONS INFORMATION

VISHAY INLP1616BZERR22M01

VIN

6V TO 26.5V

0.22μH

π FILTER

10μF

s2

VIN

R1

VIN

•

¥

§¦

R2

R1 R2

´

¶µ

r 1.22V

R2

CIN

10μF

s2

C1

0.1μF

INTVCC MODE/PLLIN EXTVCC

VIN

FREQ

COMP

TK/SS

LTM4618

VOUT

VFB

RUN

SGND PGND

PGOOD

SW

4618 F17

RSNUB

1.2Ω 0805

CSNUB

470pF

0805, 50V

C2

47pF

19.1k

VOUT

COUT 3.3V/6A

100μF

s3

Figure 17. 6V to 26.5V Input, 3.3V at 6A Design,

Meeting CISPR25 Conducted and CISPR22 Radiated EMI Solution

10dB/μV

PER DIV

150kHz

VIDEO BANDWIDTH

100MHz

4618 F18

Figure 18. VIN 26.5V, VOUT 3.3V, IOUT 5A,

π Filter 20μF to 0.22μH Vishay (1616BZ) to 20μF

CISPR25 Conducted Emissions

18

55

55

CISPR22

45

CLASS A

45

CISPR22

35

35

CLASS B

25

25

15

15

5

0 100 200 300 400 500 600 700 800 900 1000

FREQUENCY (MHz)

4618 F19a

5

0 100 200 300 400 500 600 700 800 900 1000

FREQUENCY (MHz)

4618 F19b

Figure 19. VIN 26.5V, VOUT 3.3V, IOUT 5A,

π Filter 20μF to 0.22μH Vishay (1616BZ) to 20μF

CISPR22 Radiated EMI Plots

4618fa

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