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dc2537af
DEMO MANUAL DC2537A
QUICK START PROCEDURE
Refer to Figure 1 for proper measurement equipment
setup and follow the procedure below:
NOTE: When measuring the output voltage during switch-
ing transitions, care must be taken to avoid a long ground
lead on the oscilloscope probe. Measure the output volt-
age by touching the probe tip and ground ring directly
across the output capacitor as shown in Figure 2.
1. Place SW1 to OFF position. Move JP1 from the PULSE
(default position) to ON/OFF position (load on continu-
ously when SW1 is ON).
2. With input power supply set to zero volts and power
off, connect the input power supply to +VIN and GND.
3. With power off, connect load from +VOUT to GND.
4. Turn on the input power supply and increase the input
voltage slowly to 9V minimum. The input range is up
to 135V but hot-plugging with long leads may result
in input voltages in excess of 135V.
5. Place SW1 to ON position.
6. Check for the proper output voltage using a voltmeter.
Output voltage should be close to input voltage.
NOTE: If there is no output, temporarily disconnect the
load and cycle SW1 (the ON/OFF switch) or press reset
pushbutton SW2. If output is good, the load may be
set too high.
7. Once the proper output voltage is established, adjust
the load, if desired, to test current limit.
8. Placing SW1 to OFF position, moving JP1 to PULSE
position then placing SW1 in ON position will allow
pulse operation. Pushing SW2 will turn the high side
switch on for 300µs time.
9. Placing SW1 to OFF position, moving JP1 to INPUT
position connects INPUT terminal to LTC7000 INP pin.
An INPUT pin voltage of 2.2V or more will turn-on the
high side switch.
Figure 1. Proper Measurement Equipment Setup
