Sorensen DCS Series 1kW and 1.2kW Supplies Installation and Operation
M362500-01 Rev K 2-9
The preferred way to distribute power is by the radial distribution method in which power is
connected to each load individually from a single pair of terminals designated as the positive
and negative distribution terminals. The pair of terminals may be the power supply output
terminals, the terminals of one of the loads or a distinct set of terminals specially established for
distribution. Connecting the sense leads to these terminals will compensate for losses and
minimize the effect of one load upon another.
2.6.3 Inductive Loads
To prevent damage to the power supply from inductive kickback, connect a diode rated at
greater than or equal to the supply’s output voltage and current across the output. It is
recommended that diode and cathode connections be made as follows:
•
Connect a blocking diode in series with the output to protect the power supply
•
Connect cathode of the freewheeling diode to the cathode of the blocking diode and the
anode to return.
Blocking and Free Wheeling Diode
The Peak Reverse Voltage ratings should be a minimum of 2-3 times the Power Supply
maximum output voltage. The Continuous Forward Current ratings should be a minimum of 1.5
times the Power Supply maximum output current. Heatsink may be required. There also may be
a need for higher voltage rated parts, dependent on load circuit design and inductor values.
Figure 2-2. Diode Connection
Customer Application Notes:
When positive sense is connected to anode of Blocking Diode (as shown in Figure 2-2),
voltage applied to the customer load will be lower than the output of the power supply due
to drop-off blocking diode voltage.
When load regulation is required, the positive sense can be connected directly to the load,
but the battery can be discharged thru the sense.
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