Rainbow-electronics MAX5958 Bedienungsanleitung PDF herunterladen (Seite 10)

MAX5957/MAX5958

Triple PCI Express, Hot-Plug Controllers

10 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

12VIN

= V

12S_+

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_ = FAULT_ = PORADJ = TIM =

OUTPUT_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND. See the

Typical Application Circuit

PRESENT-DETECT (ON/OFF) OPERATION

MAX5957 toc35

4ms/div

12V OUTPUT

VOLTAGE

PWRGD_

3.3V OUTPUT

VOLTAGE

PRES-DET_

10V/div

5V/div

FORCED-ON (ON/OFF) OPERATION

MAX5957 toc36

40ms/div

12V OUTPUT

VOLTAGE

PWRGD_

3.3V AUXO_

OUTPUT VOLTAGE

FON_

10V/div

5V/div

FORCED-ON (ON/OFF) OPERATION

MAX5957 toc37

4ms/div

12V OUTPUT

VOLTAGE

PWRGD_

3.3V OUTPUT

VOLTAGE

FON_

10V/div

5V/div

DEBOUNCED INPUT/OUTPUT OPERATION

MAX5957 toc38

INPUT_

2V/div

10ms/div

OUTPUT_

2V/div

POWER-ON-RESET TIME

vs. PORADJ RESISTOR

MAX5957 toc39

PORADJ

(kΩ)

POR_HL

(ms)

900800600 700200 300 400 500100

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

0 1000

FAULT

TIME DELAY vs. TIM RESISTOR

MAX5957 toc40

TIM

(kΩ)

FAULT

(ms)

800600200 400

100

120

140

160

180

200

0 1000

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 24 25

MAX5957/MAX5958 1

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