subassemblies and/or components. The type of
power distribution system used is dependent upon
the requirements of a particular application.
Drift: With all operating parameters (load, line,
etc.) held constant, the gradual (and undesirable)
change in the output voltage of a power supply
over a specified period of time. Typically specified
as starting after a warm-up period.
Driver: See Master.
Drop Out Voltage: The minimum input voltage
level required to operate a power supply to within
specified operating limits.
Dual-In-line-Package: (DIP) Popular packaging
footprint for low power DC/DC converter
modules.
Dual-Redundant: A fully redundant power system
topology (see Figure 11). The circuit consists of
two complete power supplies connected in parallel.
Power supply #1 runs “hot”, supplying all the
load current, while power supply #2 runs “cool”
(disconnected from the load viaoring diodes). If
the “hot” supply fails, the oring diodes reverse
bias and power supply #2 starts to provide full load
current. Dual redundant systems are expensive
and not as fl exible in comparison to some other
redundant approaches, but they do allow separate
input power sources to be used. Sometimes
referred to as a “100% redundant” system. See
Master/Slave and N+1.
subassemblies and/or components. The type of
power distribution system used is dependent upon
the requirements of a particular application.
Drift: With all operating parameters (load, line,
etc.) held constant, the gradual (and undesirable)
change in the output voltage of a power supply
over a specified period of time. Typically specified
as starting after a warm-up period.
Driver: See Master.
Drop Out Voltage: The minimum input voltage
level required to operate a power supply to within
specified operating limits.
Dual-In-line-Package: (DIP) Popular packaging
footprint for low power DC/DC converter
modules.
Dual-Redundant: A fully redundant power system
topology (see Figure 11). The circuit consists of
two complete power supplies connected in parallel.
Power supply #1 runs “hot”, supplying all the
load current, while power supply #2 runs “cool”
(disconnected from the load viaoring diodes). If
the “hot” supply fails, the oring diodes reverse
bias and power supply #2 starts to provide full load
current. Dual redundant systems are expensive
and not as fl exible in comparison to some other
redundant approaches, but they do allow separate
input power sources to be used. Sometimes
referred to as a “100% redundant” system. See
Master/Slave and N+1.
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