Rainbow Electronics MAX5960 - Manual (Page 6)

MAX5959/MAX5960
Quad PCI Express, Hot-Plug Controllers
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V 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.)
12V UNDERVOLTAGE LOCKOUT
THRESHOLD vs. TEMPERATURE
MAX5959 toc10
TEMPERATURE ( °C)
UVLO THRESHOLD (V)
60 35 -15 10
9.85
9.90
9.95
10.00
10.05
10.10
10.15
10.20
9.80
-40 85
3.3VAUXON UNDERVOLTAGE LOCKOUT
THRESHOLD vs. TEMPERATURE
MAX5959 toc11
TEMPERATURE ( °C)
UVLO THRESHOLD (V)
60 35 10 -15
2.54
2.58
2.62
2.66
2.70
2.52
2.56
2.60
2.64
2.68
2.50
-40 85
12V TURN-ON/OFF TIME
MAX5959 toc12
40ms/div
12V OUTPUT
VOLTAGE
12G_
ON_
PWRGD_
10V/div
20V/div
5V/div
5V/div
3.3V TURN-ON/OFF TIME
MAX5959 toc13
40ms/div
3.3V OUTPUT
5V/div
3.3G_
10V/div
ON_
5V/div
PWRGD_
5V/div
3.3V AUXILIARY TURN-ON/OFF TIME
MAX5959 toc14
40ms/div
3.3AUXO_OUTPUT
VOLTAGE
2V/div
AUXON_
2V/div
PWRGD_
2V/div
TURN-ON DELAY 3.3V OUTPUT AND
3.3V AUXILIARY OUTPUT
MAX5959 toc15
4ms/div
5V/div
5V/div
5V/div
5V/div
10V/div
3.3VAUXO_
OUTPUT VOLTAGE
3.3 OUTPUT VOLTAGE
3.3 INPUT,
3.3VAUXIN
3.3G_
PWRGD
FAULT CONDITION ON 12V MAIN OUTPUT
(AUTORESTART OPTION)
MAX5959 toc16
12G_
20V/div
0A
0V
0V
0V
FAULT_
5V/div
12V OUTPUT CURRENT
5A/div
100ms/div
12V OUTPUT VOLTAGE
10V/div
t RESTART
R LOAD STEP TO 1.5 Ω