Rainbow-electronics MAX5953D Bedienungsanleitung PDF herunterladen (Seite 19)

MAX5953A/MAX5953B/MAX5953C/MAX5953D

IEEE 802.3af PD Interface and PWM Controllers

with Integrated Power MOSFETs

______________________________________________________________________________________ 19

PGOOD

V+

UVLO

R1*

OPEN

DISC

)

25.5kΩ

C10

22µF

63V

210kΩ

100pF

2.2µF

4700pF

25.5kΩ

R11

2kΩ

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

0.068µF

56.7V

-48V

RTN

-48V

INBIAS

R2*

0Ω

)

255Ω

RCLASS

DCUVLO

R16

316kΩ

R17

14.7kΩ

HVIN

DRNH

PPWM

BST

0.22µF

D11

D10

100Ω

C24

0.1µF

R28

10kΩ

-48V

OUT

PA0264

PPWM

D12

R16

1kΩ

R17

22Ω

33, 34

XFRMRH

31, 32

XFRMRL

28, 29

INBIAS

RCFF

RAMP

DRVIN

GATE

OUT

REGOUT

FLTINT

42 24

RTCT

CSS

GND

OPTO

1000pF

100pF

1MΩ

0.01µF

PGND

FOD2712

LED

GND

COMP

26, 27

SRC

100pF

1kΩ

R10

0.18Ω

C13

0.22µF

R14

470Ω

R22

221Ω

C19

0.068µF

C20

0.068µF

C21

0.1µF

R21

2.52kΩ

R20

2.74kΩ

C12

0.1µF

OUT1

(10V AT 30mA)

MAX5953A

210kΩ

GATE

-48V

OUT

R15

210kΩ

R25

OPEN

N.C.

1, 4

R24

1kΩ

R23

1MΩ

OUT2

C22

220µF

C23

220µF

OUT3

INBIAS

C11

0.1µF

OUT2

RTN

R18

22Ω

R19

1kΩ

-48V

OUT

OUT3

OUT2

(5.1V AT 1.8A)

OUT3

(2.55V AT 5.4A)

C17A

100µF

C16

100pF

C14

0.47µF

C17

220µF

C18

2200pF

C15

22µF

C25

0.1µF

R27

10kΩ

C26

0.1µF

Figure 6. PD with Three-Output Flyback DC-DC Converter

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 25 26 27

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