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Topic: Charge Controller LT3652 (Read 440 times) previous topic - next topic

ron_sutherland

Jan 30, 2015, 11:32 pm Last Edit: Apr 06, 2015, 07:20 am by ron_sutherland
Power Tracking 1500 - 2500 mA Solar Panel Powered 3-Stage 6V Lead-Acid Fast/Float Charger.

Project Board Page: http://epccs.org/indexes/Board/CC01/

Electrical Schematic:


Board Design:



ron_sutherland

#1
Mar 01, 2015, 08:29 am Last Edit: Mar 02, 2015, 10:06 pm by ron_sutherland
Long story short, I debugged and debugged... then finally got it to work (with some room for improvement).

point of interest:
problem with ICM7555 one shot controlled by TLVH431 reference,
ICM7555OneShotWithResetProblem.jpg
ICM7555OneShot.jpg

I used 30AWG wire for this fly wire rats nest and liked it.
15016^0A(1OF2)_RWRK.jpg
15016^0A(2OF2)_RWRK.jpg

The list of changes that I need to spin into an updated board.
http://epccs.org/indexes/Board/CC01/Change/15016^0A,Schematic_RDLN.pdf

The new schematic and board, linked from the top post, is for 15016^1 board. I have also added a switch (not on redline) that will allow attaching the battery in the dark without having it disconnect.

ron_sutherland

Got rev 1 boards and removed parts from original rev 0 board to place them on the new ^1 board (are my really that cheap, guess so). So far, testing looks good but I never checked the Ideal-Diode circuit, and now I know it is worthless above about 6V due to the emitter-base breakdown voltage, anyway removing Q2 and R5 got me going. This video helped me:
https://www.youtube.com/watch?v=IrB-FPcv1Dc&t=39

I have updates and some short videos of testing and debugging on circuit board page (see post #1), but now it is time to get a few PV array and batteries.
15016^1A Schematic RDLN.pdf

ron_sutherland

Rev ^1 has hiccup at sunrise when battery was disconnected, onward to rev ^2

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