Quick Start Procedure - Linear Technology 1317A-D Quick Start Manual

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1317A-D
ACTIVE RESET ISOLATED 18-72V INPUT TO 24V @5A DC/DC POWER CONVERTER

QUICK START PROCEDURE

Demonstration circuit 1317 is easy to set up to evalu-
ate the performance of LT1952-1 circuit. Refer to Fig-
ure 1 for proper measurement equipment setup and
follow the procedure below:
NOTE: When measuring the input or output voltage
ripple, care must be taken to avoid a long ground lead
on the oscilloscope probe. Measure the input or out-
put voltage ripple by touching the probe tip directly
across the Vin or Vout and GND terminals. See Figure
2. for proper scope probe technique.
With power off, connect the input power supply to
1.
Vin and GND. Make sure that the input power sup-
ply has sufficient current rating at minimum input
voltage for the required output load.
Turn on the power at the input.
2.
NOTE:
Make sure that the input voltage does not
exceed 72V including transients.
Check for the proper output voltage.
3.
Vout = 24V.
If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
Once the proper output voltage is established, ad-
4.
just the load within the operating range and ob-
serve the output voltage regulation, ripple voltage,
efficiency and other parameters.
The DC1317 is equipped with an output capacitor
5.
CSYS (330uF) that approximates typical system
rail capacitance. If system board already has ca-
pacitance of similar value CSYS can be removed.
2