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ADP1046A 100Watt
Evaluation board
GENERAL SETTINGS AND SOFTSTART
This section programs the PS_ON turn on and softstart timing. The power supply (PSU) can be turned on with a manual switch
(hardware PS_ON), a software enabled switch (SW PS_ON), or both with a programmable delay. It contains the capability of
adding a soft start to the primary and secondary switches (synchronous rectifiers) and also displays the temperature of the
thermistor for over temperature protection.
Figure 13 - General Settings window showing PS_ON, temperature flags, and softstart settings
Some test results are provided to better appreciate the flexibility of part. In addition to these some suggestions for further
exploration are also provided.
A.
PS_ON Turn on Delay: Figure 14 and Figure 15 show the startup sequence with a 0.5 second and 2 second delay
respectively.
This test was conducted by monitoring the PSON signal (TP29), the output voltage (J4 and J5) and setting a
programmable delay using the drop down menu. Monitoring the synchronous rectifier (test point SR1 and SR2) is
optional.
Rev. 1.3 | Page 12 of 55
PRD1386
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