check in
Completed

FSL306LR HV buck supply

STDFSL306LR HV buck supply

tag

480
0
0
0
Mode:Full

License

Public Domain

Creation time:2022-09-04 09:58:36Update time:2024-06-15 15:50:09

Description

This is a buck converter for 35-400 V DC input to 12 V (9-24 V) output. It uses the excellent FSL306 buck converter IC. It has a fairly low output current of 450 mA max (1.8 A if using the alternative FSL336 IC but you'd need a bigger inductor). It's tested and has worked flawlessly. A B1212 provides isolation to one set out outputs for when this is needed - you don't have to populate it if you don't need this. Mounting holes are 4 mm with spacing of 40 mm and 90 mm. Obviously a fatal shock risk exists from this board due to the high voltage DC input and because its output is not isolated. The circuit has a low quiescent current and was designed in order to supply 12 v to microcontrollers etc. which control HV solar equipment. 

The input capacitor can be aluminium electrolytic but film is better for long life; the board has space for either. Solid capacitors are recommended at the output. It may be a good idea to put a variable resistor in the voltage feedback circuit if you need adjustable output voltage.

Design Drawing

The preview image was not generated, please save it again in the editor.

BOM

Bom empty

Attachments

OrderFile nameDownload times
No data
Clone
Add to Album
0
0
Share
Report

Comment

All Comments(1)
Sort by time|Sort by popularity
Followers0|Likes0
Related projects
Empty

Bottom Navigation