Project:AN1015-lead acid battery charger

Thread Starter

misseny

Joined Mar 22, 2009
3
i am a student from Malaysia, interested for doing Programmable Lead Acid Battery Charger published in AN1015. But there is some problem on how determining the value of label component in this circuit eg Ccomp1,Rcomp etc. I have upload the circuit for reference. I am very grateful if anyone can help me to give guidance and i want to learn from anyone experienced doing this project.I would like to charge 12V lead acid battery. Any information about this topic is really needed.

thanks
misseny
Malaysia
 

Attachments

SgtWookie

Joined Jul 17, 2007
22,230
Looks to me like they (Microchip) discontinued the PIC16HV785. They still make the PIC16F785.

From the application note, on page 9, under the named components:
"HARDWARE FEEDBACK TO PWM: OP1 IS CURRENT SENSE SIGNAL.
ERROR AMP. Ccomp1/Ccomp2/Rcomp ARE
LOOP COMPENSATION COMPONENTS."

In the lower right corner:
"COMPONENTS THAT DO NOT HAVE A NUMERICAL
VALUE ASSOCIATED WITH THEM ARE DEPENDENT
UPON THE VOLTAGE/CURRENT SPECIFICATIONS OF
THE PARTICULAR APPLICATION.
CONSULT MICROCHIP FOR GUIDANCE IN DEFINING
THESE COMPONENT VALUES."

I see you've requested information on the Microchip message board, under someone else's request that has received no response since October of 2008.

You might try searching for similar requests by others on that board.

If you're still not getting anywhere, try writing to Microchip tech support directly, but give more specifics about the battery you wish to charge; eg: voltage, charge current, float voltage, etc.
 
Last edited:

Thread Starter

misseny

Joined Mar 22, 2009
3
hye...
thanks to bertus for the attached pdf....

thanks for the response.
i would like to charge 12V lead acid battery...
details i will update later....i will find it...
and for information, i want use this circuit for solar application...
how u think about it?...

thanks
misseny
Malaysia
 

Thread Starter

misseny

Joined Mar 22, 2009
3
i want to charge 12V lead acid battery...
i need your suggestion about what value of labeled component that i should use as well.
 
Top