Electronics > Projects, Designs, and Technical Stuff

Optocoupler technology

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IconicPCB:
Hi Spec,

The reason why I started to look at the gate driver optos is as follows

I am looking to drive some commercial ( Meanwell ) switchmode powersupplies in a series/parallel combination under a controlled regime.
They require a variable voltage to control the output.

I had seen these opto drivers in the past but could not recall details.  Unfortunately they are a bit unsuitable ( too low a drive ).

ali_asadzadeh:

--- Quote ---VOM1271T
--- End quote ---
This device looks interesting, do we have a cheaper version to build Solid state relays with MOSFETs!?

ali_asadzadeh:

--- Quote ---Toshiba TLP series. Usually more expensive, but with better driving capability.
Or if you have access to cheap P-JFETs for the turn-off circuit, go with VO1263.
--- End quote ---

Thanks, Do we have Chinese manufacture of such devices? also I wonder what would be the turn on time of these devices with two 20N60 MOSFETs acting as a an SSR, what sort of times should I expect? Also there are lot's of cheaply P-JFETs out there ;)

spec:

--- Quote from: blueskull on January 16, 2019, 10:31:02 pm ---Something like TLP3914 or VOM1271T or VO1263?

--- End quote ---
Wow- didn't know about those. :-+

spec:

--- Quote from: IconicPCB on January 18, 2019, 01:34:44 am ---Hi Spec,

The reason why I started to look at the gate driver optos is as follows

I am looking to drive some commercial ( Meanwell ) switchmode powersupplies in a series/parallel combination under a controlled regime.
They require a variable voltage to control the output.

I had seen these opto drivers in the past but could not recall details.  Unfortunately they are a bit unsuitable ( too low a drive ).
--- End quote ---
Got it.  :)

Can you define exactly what you would like to do with the Manwell PSUs?

Maybe we could help with an alternative approach.

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