ADLINK cBP-3204[R] User Manual
Page 32
22
• Power Supply Unit
Definitions of Pin Signals
Signal
Definition
EN#
Enable signal should be used to "turn on" the power supply outputs.
EN# is used in conjunction with INH# (see Table 2.1) and is typically
connected to ground to enable the power supply after other signals
on longer pins have made contact.
INH#
Inhibit signal should be used to "turn off" the power supply outputs.
This signal is on a longer pin than the EN# ( enable ) signal and
therefore has precedence over the EN# signal when determining
power supply operation. The INH# signal is typically connected to an
"ON/OFF" switch. Table 2.1 Module Power Supply Operation
V1
SHARE
V1(+5V) Current Share signal may be used between multiple power
supplies for load balancing. This signal is not required for single
power supply systems.
V2
SHARE
V1(+3.3V) Current Share signal may be used between multiple
power supplies for load balancing. This signal is not required for
single power supply systems.
SENSE
RTN
Return Sense shall be connected to the center of the backplane's
ground plane for accommodating power distribution losses. This
signal is required for modular power supplies.
V1
V1( +5V ) shall be connected via a low impedance to the backplane's
power plane for minimizing power distribution losses. This signal is
required for all modular power supplies.
V2
V1( +3.3V ) shall be connected via a low impedance to the
backplane's power plane for minimizing power distribution losses.
This signal is required for all modular power supplies.
V3
V1( +12V ) shall be connected via a low impedance to the
backplane's power plane for minimizing power distribution losses.
This signal is required for all modular power supplies.
V4
V1( -12V ) shall be connected via a low impedance to the
backplane's power plane for minimizing power distribution losses.
This signal is required for all modular power supplies.
RTN
Return shall be connected via a low impedance to the backplane's
ground plane for minimizing power distribution losses. This signal is
required for modular power supplies.
V1SENSE V1 (+5V) Sense shall be connected to the center of the backplane's
power plane for accommodating power distribution losses. This
signal is required for all modular power supplies.
V2SENSE V1 (+3.3V) Sense shall be connected to the center of the
backplane's power plane for accommodating power distribution
losses. This signal is required for all modular power supplies.
ACL/
-DC IN
AC Line/Negative DC input shall be used as the AC Line voltage
input for supplies operating from AC, or the -DC voltage input for DC
input power supplies.
ACL/
+DC IN
AC Neutral/Positive DC input shall be used as the AC Neutral
voltage input for supplies operating from AC, or the +DC voltage
INH# =
Low
Low
Open
Open
EN# =
Low
Open
Low
Open
Power Status
“OFF”
“OFF”
“ON”
“OFF”