Linear ADI Power Analog Devices DC2713A Demo Manual page 2

DEMO MANUAL DC2713A
QUICK START PROCEDURE
DANGER! High voltage testing should be performed
by qualified personnel only. As a safety precaution, at
least two people should be present during high voltage
testing. There are exposed conductors on the bottom of
the board, and any banana plugs present will protrude
through the bottom of the board. Even though the board
is equipped with standoffs, the underlying surface should
be non-conductive and clear of any wire, solder, and other
conductive debris.
A simple demonstration of DC2713A's operation is
as follows:
1. For DC2713A-A/DC2713A-B, set jumper JP1 for 28V
or 47V clamping. JP1 position doesn't matter for
DC2713A-C/DC2713A-D due to a fixed 66.5V clamp.
2. Connect a power supply to INPUT (through a diode for
Step 4) and a load to OUTPUT (initially off) as shown
in Figure 1. The small turrets do not need any con-
nections. Applying input power, above 2.5V, turns on
2
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the circuit as indicated by the green LED at the out-
put. At rated load, the input to output voltage drop
should be around 50mV for DC2713-A/DC2713A-B and
200mV for DC2713A-C/DC2713A-D. For DC2713A-C/
DC2713A-D, the installed 22nF TMR capacitor starts
up a 47µF load capacitor (including installed CL).
3. Connect ON to GND to turn off the output. Release it
or pull above 1.1V to turn the output back on again.
4. Couple a voltage surge through a second diode to
the input to test the clamping action of DC2713A-A/
DC2713A-B. The diodes permit surge testing by pro-
tecting the power supply and surge generator against
back-feeding.
5. To measure the LTC4381 operating quiescent current
of 6µA at 12V input, disconnect any output loading
and subtract DLED current (= V
input current.
/100kΩ) from the
RLED
Rev. 0