Rainbow-electronics MAX5965B Manual do Utilizador descarregar pdf (Página 11)

MAX5965A/MAX5965B

High-Power, Quad, Monolithic, PSE Controllers

for Power over Ethernet

______________________________________________________________________________________ 11

DETECTION WITH INVALID PD (33kΩ)

MAX5965A toc22

100ms/div

OUT

1mA/div

(AGND - V

OUT

)

5V/div

STARTUP IN MIDSPAN MODE

WITH VALID PD (25kI AND 0.1µF)

MAX5965A toc23

OUT

100mA/div

AGND

- V

OUT

20V/div

GATE

5V/div

DETECTION WITH MIDSPAN MODE

WITH INVALID PD (15kΩ)

MAX5965A toc24

400ms/div

OUT

1mA/div

(AGND - V

OUT

)

5V/div

GATE_

10V/div

DETECTION WITH MIDSPAN MODE

WITH INVALID PD (33kΩ)

MAX5965A toc25

400ms/div

OUT

1mA/div

(AGND - V

OUT

)

5V/div

GATE_

10V/div

OUTPUT SHORTED

MAX5965A toc26

OUT

1mA/div

AGND

- V

OUT

5V/div

GATE

10V/div

DETECTION WITH INVALID PD (OPEN CIRCUIT,

USING TYPICAL OPERATING CIRCUIT 1)

MAX5965A toc27

40ms/div

OUT

1mA/div

(AGND - V

OUT

)

5V/div

GATE_

10V/div

Typical Operating Characteristics (continued)

= -48V, V

= +3.3V, V

AUTO

= V

AGND

= V

DGND

= 0V, RESET = SHD_ = unconnected, R

SENSE

= 0.5Ω, IVEE = 00, ICUT = 000,

= +25°C, all registers = default setting, unless otherwise noted.)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 51 52

MAX5965A/MAX5965B 1

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