Rainbow-electronics MAX5965B Manual do Utilizador descarregar pdf (Página 10)

MAX5965A/MAX5965B

High-Power, Quad, Monolithic, PSE Controllers

for Power over Ethernet

10 ______________________________________________________________________________________

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.)

RESET TO OUT TURN-OFF DELAY

MAX5965A toc16

OUT

200mA/div

GATE

5V/div

RESET

2V/div

ZERO-CURRENT DETECTION WAVEFORM

MAX5965A toc17

100ms/div

INT

2V/div

OUT

200mA/div

GATE_

10V/div

(AGND - V

OUT

)

20V/div

OVERCURRENT RESTART DELAY

MAX5965A toc18

400ms/div

OUT

200mA/div

GATE_

10V/div

(AGND - V

OUT

)

20V/div

STARTUP WITH VALID PD

(25kI AND 0.1µF)

MAX5965A toc19

OUT

100mA/div

AGND

- V

OUT

20V/div

GATE

5V/div

DETECTION WITH INVALID PD

(25kI AND 10µF)

MAX5965A toc20

OUT

1mA/div

AGND

- V

OUT

20V/div

GATE

10V/div

DETECTION WITH INVALID PD (15kΩ)

MAX5965A toc21

100ms/div

OUT

1mA/div

(AGND - V

OUT

)

5V/div

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 51 52

MAX5965A/MAX5965B 1

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