Rainbow Electronics MAX5958 - Manual (Page 14)

MAX5957/MAX5958
Triple PCI Express, Hot-Plug Controllers
14 ______________________________________________________________________________________
5 µA
12S_-
12G_
12S_+
54mV 108mV R SENSE
150 µA
10 µA
100 µA
-
+
-
+
10 µA
120mA
5 µA
3.3S_-
3.3G_
3.3S_+
20mV 40mV
150 µA
3.3AUXO
PRES-DET_ FON_ AUXON_
UVLO
V REF
ON_
R SENSE
-
+
-
+
10 µA
150mA
CHARGE
PUMP
-
+
R TIM
TIM
IN OUT 12VIN PWRGD_ FAULT_
R PORADJ
PORADJ
DEBOUNCE
FAST
OSCILLATOR
CONTROL LOGIC
MAIN-CHANNEL
CONTROL LOGIC
AUX-CHANNEL
INPUT COMPARATOR AND
CHIP CONTROL LOGIC
t FAULT
t POR
OSCILLATOR
MAX5957
BIAS, REFERENCES,
AND UVLO
CONTROL LOGIC
MAIN-CHANNEL
CONTROL LOGIC
AUX-CHANNEL
CHARGE
PUMP
100 µA
Figure 1. Single-Channel Internal Block Diagram