DPA425R timing Remote ON/OFF?
I plan to use DPA425R (400 kHz) for driving power source make from 24V 400V for charging 3uF capacitor.
The capacitor is over thyristor discharge on other transformer for make 6kV spark.
I need to turn off the power supply when the capacitor is discharged into the load.
I use for remote ON/OFF NPN transistor on X ext, currnet limit.
My idea
Use on driving signal (Pulse) for driving thyrisotr and Remote ON/OFF DPA424
It Pulse is 1 DPA425R on On and thyrisotr is OFF, PS charge capacitor (100us)
If Pulse is 0 DPA425R on OFF and thyristor is ON, thyristor dischrge capacitor (10us)
it will work or I need to control the DPA and thyristor independently with some shift of control signals, perhaps because the DPA is delayed on X input ?
Comments
Hi,
For the 10uS OFF time the power supply should not have any problem.
However power supply ON time is only 100uS, so I am not sure if there will be enough time to completely charge the capacitor.
Just make sure that your design can deliver enough energy to the capacitor with in the given 100uS ON time.
For more details on the remote ON/OFF control of DPA switch please refer to remote ON/OFF section in page 7 of the DPA switch datasheet.
https://ac-dc.power.com/sites/default/files/product-docs/dpa_family_datasheet.pdf
Regards,
PI-NANO
Hi guys, I just stubled into this forum. I like your idea Carpenter and thanks for your improvement suggestions PI-NANO.
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