Rainbow-electronics MAX5953D Manual de usuario descargar pdf (Pagina 13)

MAX5953A/MAX5953B/MAX5953C/MAX5953D

IEEE 802.3af PD Interface and PWM Controllers

with Integrated Power MOSFETs

______________________________________________________________________________________ 13

PGOOD

V+

UVLO

R1*

OPEN

DISC

)

25.5kΩ

22µF

63V

200kΩ

220pF

4.7µF

6800pF

24.9kΩ

1.78kΩ

*R1 AND R2 ARE OPTIONAL AND WHEN USED, THEY MUST TOTAL 25.5kΩ AND REPLACE R3, 25.5kΩ.

68nF

60V

-48V

RTN

-48V

R2*

OPEN

RCLASS

)

255Ω

RCLASS

DCUVLO

R16

316kΩ

R17

14.7kΩ

HVIN

DRNH

PPWM

BST

C11

0.1µF

C12A

47µF

33, 34

XFRMRH

31, 32

XFRMRL

28, 29

INBIAS

R13

15Ω

RCFF

RAMP

DRVIN

GATE

OUT

REGOUT

FLTINT

42 24

RTCT

CSS

GND

OPTO

0.1µF

100pF

1MΩ

0.1µF

PGND

FOD2712

LED

GND

COMP

26, 27

SRC

220pF

R10

100Ω

R11

0.1Ω

OPEN

C10

0.33µF

R12

604Ω

R16

562Ω

C16

0.15µF

C17

0.047µF

R15

16.2kΩ

R14

143kΩ

22T

25T

11T

C15

1µF

C12B

47µF

C13

0.1µF

OUT

SGND

C14

0.0047µF

MAX5953A

Figure 3. Typical Application Circuit

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 26 27

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Rainbow-electronics MAX5953D Manual de usuario Pagina 13

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