Rainbow-electronics MAX5953D Manual do Utilizador descarregar pdf (Página 14)

MAX5953A/MAX5953B/MAX5953C/MAX5953D

IEEE 802.3af PD Interface and PWM Controllers

with Integrated Power MOSFETs

14 ______________________________________________________________________________________

PGOOD

V+

UVLO

R1*

DISC

)

25.5kΩ

68nF

60V

-48V

RTN

-48V

R2*

RCLASS

DCUVLO

HVIN

DRNH

PPWM

BST

33, 34

XFRMRH

31, 32

XFRMRL

28, 29

INBIAS

RCFF

RAMP

DRVIN

GATE

OUT

REGOUT

FLTINT

42 24

RTCT

CSS

GND

OPTO

PGND

FOD2712

LED

GND

COMP

26, 27

SRC

OUT

SGND

MAX5953A

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

Figure 4. For higher power applications, the MAX5953A/MAX5953B/MAX5953C/MAX5953D can be used in a two-switch forward

converter configuration

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 26 27

General Description 1
Features 1
Ordering Information 1
Applications 1
ABSOLUTE MAXIMUM RATINGS 2
ELECTRICAL CHARACTERISTICS 2
Pin Description 10
Pin Description (continued) 11
Typical Application Circuit 12
MAX5953A 13
Detailed Description 15
Optocoupled Feedback 17
Internal Regulators 17
Applications Information 18
Table 3. Component Suppliers 21
Block Diagrams 22
Block Diagrams (continued) 23
Typical Operating Circuit 24
Chip Information 25
Selector Guide 25
Pin Configuration 25
Package Information 26
M. Quijano 27

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