Rainbow-electronics MAX5971B Instrukcja Użytkownika Pobierz pdf (Strona 10)

10 _____________________________________________________________________________________

MAX5971B

Single-Port, 40W, IEEE 802.3af/at,

PSE Controller with I

Typical Operating Characteristics (continued)

= +25°C, unless otherwise noted.)

CLASSIFICATION WITH DIFFERENT PD CLASSES

(4 AND 5)

MAX5971B toc20b

40ms/div

0mA

AGND

- V

OUT

10V/div

OUT

20mA/div

CLASS 5

CLASS 4

CLASSIFICATION WITH DIFFERENT PD CLASSES

(0 TO 3)

MAX5971B toc20a

40ms/div

0mA

AGND

- V

OUT

10V/div

OUT

10mA/div

CLASS 3

CLASS 2

CLASS 1

CLASS 0

DETECTION IN OUTPUT SHORTED TO AGND

MAX5971B toc19

40ms/div

0mA

AGND

- V

OUT

5V/div

OUT

1mA/div

DETECTION IN MIDSPAN WITH INVALID PD (33kΩ)

MAX5971B toc18b

400ms/div

0mA

AGND

- V

OUT

5V/div

OUT

1mA/div

DETECTION IN MIDSPAN WITH INVALID PD (15kΩ)

MAX5971B toc18a

400ms/div

0mA

AGND

- V

OUT

5V/div

OUT

1mA/div

STARTUP IN MIDSPAN WITH A VALID PD

MAX5971B toc17

100ms/div

0mA

AGND

- V

OUT

20V/div

OUT

100mA/div

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 45 46

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