Typical operating characteristics (continued) – Rainbow Electronics MAX5958 User Manual
Page 8
MAX5957/MAX5958
Triple PCI Express, Hot-Plug Controllers
8
_______________________________________________________________________________________
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.)
SHORT CIRCUIT ON 12V MAIN OUTPUT
MAX5957 toc25
12G_
20V/div
FAULT_
5V/div
12V OUTPUT CURRENT
5A/div
2ms/div
12V OUTPUT VOLTAGE
10V/div
SHORT CIRCUIT ON 12V MAIN OUTPUT
MAX5957 toc26
12G_
20V/div
FAULT_
5V/div
12V OUTPUT CURRENT
10A/div
4
µs/div
12V OUTPUT VOLTAGE
10V/div
0V
0V
0V
FAULT CONDITION ON AUXILIARY OUTPUT
(LATCHOFF OPTION)
MAX5957 toc23
FAULT_
2V/div
3.3VAUXO_ OUTPUT CURRENT
500mA/div
100ms/div
3.3VAUXO_ OUTPUT VOLTAGE
2V/div
R
LOAD
STEP TO 3.5
Ω
MAX5958
FAULT CONDITION ON AUXILIARY OUTPUT
MAX5957 toc24
FAULT_
2V/div
3.3VAUXO_ OUTPUT CURRENT
500mA/div
10ms/div
3.3VAUXO_ OUTPUT VOLTAGE
2V/div
R
LOAD
STEP TO 3
Ω
t
FAULT
MAX5958
SHORT CIRCUIT ON 3.3V MAIN OUTPUT
MAX5957 toc27
3.3G_
5V/div
FAULT_
5V/div
3.3V OUTPUT CURRENT
2A/div
2ms/div
3.3V OUTPUT VOLTAGE
5V/div
SHORT CIRCUIT ON 3.3V MAIN OUTPUT
MAX5957 toc28
3.3G_
5V/div
FAULT_
5V/div
3.3V OUTPUT CURRENT
10A/div
2
µs/div
3.3V OUTPUT VOLTAGE
5V/div
0V