Output Signals
PS_PRESENT
Signal used to indicate to the system that a power supply is inserted in the power bay.
PS_INTERRUPT
Active low signal used by the power supply to indicate to the system that a change in power supply status has occurred. This event can be
triggered by faults such as OVP, OCP, OTP, and fan fault. This signal can be cleared by a CLEAR_FAULT command.
MIN MAX
V
IL
Input logic level LOW 0.8 V
V
IH
Input logic level HIGH 2.0 V 3.46 V
I
SOURCE
Current that may be sourced by this pin 4 mA
I
SINK
Current that may be sunk by this pin at low state 4 mA
Control and Status Signals
Rev. 12.17.13
DS2500PE-3
4 of 9
Embedded Power for
Business-Critical Continuity
BUS Signals
ISHARE
Bus signal used by the power supply for active current sharing. All power supplies configured in the system for n+n sharing will refer to this
bus voltage inorder to load share.
Voltage Range The range of this signal for active sharing will be up to 8.0 V, which corresponds to the maximum output current.
MIN MAX
I
SHARE
Voltage
Voltage at 100% load, stand alone unit 4.75 5.25
Voltage at 50% load, stand-alone unit 2.375 2.625
Voltage at 0% load, stand-alone unit 0 0.3
I
SOURCE
Current that may be sourced by this pin 160 mA
SCL, SDA
Clock, data and addressing signals defined as per I
2
C requirements. The maximum system side resistor pull-up and decoupling capacitance
VL Input logic level LOW 0.8 V
VH Input logic level HIGH 2.0 V 3.46 V
Note: All signal noise levels are below 400 mVpk-pk from 0-100 MHz.
A1 A0 Active Bus
Low Low None
Low High All “A”
High Low All “B”
High High None
FRU EEPROM Address
Write 0xA0h
Read 0xA1h
I
2
C Address
Write 0xA0h
Read 0xA1h
I
2
C Addressing Table
