Typical operating characteristics (continued) – Rainbow Electronics MAX5958 User Manual
Page 9
MAX5957/MAX5958
Triple PCI Express, Hot-Plug Controllers
_______________________________________________________________________________________
9
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
3.3AUXO_ AUXILIARY OUTPUT
MAX5957 toc29
FAULT_
5V/div
3.3VAUXO_ OUTPUT CURRENT
500mA/div
2ms/div
3.3VAUXO_ OUTPUT VOLTAGE
2V/div
MAX5958
SHORT CIRCUIT ON 3.3VAUXO_
AUXILIARY OUTPUT
MAX5957 toc30
FAULT_
5V/div
3.3VAUXO_ OUTPUT CURRENT
5A/div
0A
0A
4
µs/div
3.3VAUXO_ OUTPUT VOLTAGE
2V/div
MAX5958
POWER-UP INTO FAULT
(AUXILIARY SUPPLY)
MAX5957 toc31
3.3VAUXO_ OUTPUT VOLTAGE
2V/div
FAULT_
5V/div
3.3VAUXO_ OUTPUT CURRENT
500mA/div
4ms/div
AUXON_
5V/div
t
SU
R
LOAD
= 3
Ω
MAX5958
POWER-UP INTO FAULT (3.3V MAIN)
MAX5957 toc32
4ms/div
3.3V OUTPUT
CURRENT
FAULT_
3.3G_
3.3V OUTPUT
VOLTAGE
ON_, AUXON_
5A/div
5V/div
5V/div
2V/div
5V/div
POWER-UP INTO FAULT
(12V MAIN OUTPUT)
MAX5957 toc33
12V OUTPUT VOLTAGE
10V/div
FAULT_
5V/div
12V OUTPUT CURRENT
5A/div
4ms/div
ON_, AUXON_
5V/div
t
SU
12G_
10V/div
PRESENT-DETECT (ON/OFF) OPERATION
MAX5957 toc34
40ms/div
12V OUTPUT
VOLTAGE
PWRGD_
3.3VAUXO_
OUTPUT VOLTAGE
PRES-DET_
10V/div
5V/div
5V/div
5V/div