ソリューション ファインダー 技術サポート

battery charger

Posted by: Muhammad Ashra… on

Hi,
I am a new user and want to develop a 12 battery charger for my multiple usage.
I am interested to design a switch mode power supply with one of your key component.
I have seen a 14V battery charger with top249YN. and wish to make the similar kind of charger.

my requirement is to design a 13.8V to 14.4V & 3A or 5A output.

Need your kind support for the same

Regards;
Muhammad Ashraf
FRom Pakistan Karachi
Contact # 00923332348629

コメント

Submitted by PI - Traveler on 04/25/2012

Muhammad -


Thank you for your interest in our products!


If you're referring to one of our reference designs (possible EPR11 or DI-22?) and the your specs closely match the reference design, I would suggest using it as a starting point.


If you haven't already done so, I would highly recommend downloading our PI Expert design software. It will automate much of the power supply design process when using our devices.


Here are some additional reference designs that might be worth taking a look at:
http://www.powerint.com/sites/default/files/PDFFiles/di182.pdf
http://www.powerint.com/sites/default/files/PDFFiles/der196.pdf
http://www.powerint.com/sites/default/files/PDFFiles/der197.pdf
http://www.powerint.com/sites/default/files/PDFFiles/der232.pdf
http://www.powerint.com/sites/default/files/PDFFiles/di22.pdf
http://www.powerint.com/sites/default/files/PDFFiles/epr11.pdf


These reference designs include the information used in our PI Expert software and should be a good starting place for you. Let me know if I can be of further help.

-The Traveler

Submitted by Muhammad Ashra… on 04/25/2012

In reply to by PI_Crusher

Traveler-
Thanks for your support.

How can i get 14V instead of 19V & what changes will be required in epr11 and di22 designs.

TOP249Y is in epr11 and TOP249YN is in di22, are they same.

How could i get your brand in my city as i am from Karachi - Pakistan.

Agains thanks for your help

Regards;
Muhammad Ashraf

Submitted by PI - Traveler on 04/26/2012

In reply to by PI_Crusher

Muhammad -

TOP249Y and TOP249YN are the same part.


If you use one of our reference designs as a starting point, you'll likely need to change the transformer windings, some feedback components, clamp circuitry etc. You can most likely use the same layout or something very similar and just have a handful of different component values.


To modify the reference designs, I would recommend downloading our PI Expert software and using the PI Expert design information in the reference design documentation to copy the reference design into PI Expert. Once you have the design copied in, I would then start changing the specs to suit your needs and have PI Expert re-run all the optimizations for the design.


Regarding part availability, try these links:
http://www.powerint.com/en/company/sales-information/worldwide-sales-reps/distributors
http://www.powerint.com/en/company/sales-information/worldwide-sales-support-locations
http://www.powerint.com/en/design-support/component-suppliers
http://www.powerint.com/en/design-support/technical-support-contacts

-The Traveler

Submitted by Muhammad Ashra… on 05/25/2012

Dear Traveler:
I have made a battery charger
Following are the Outcome
Output Voltage can be set 13.7V to 14.3V and it is OK

Current can not exceed more then 200mA which is incorrect and i need 3 to 4A

On Battery charging after some time the output voltage drops from 14V to 2.4V
when i check the entire circuit the P6KE200 diode is shorted.
and this is happen many times.

Kindly check the schematic and suggest me the possible correction.

Regards
Muhammad

Submitted by Muhammad Ashra… on 05/27/2012

Waiting for Fruitful Comments..............
Any One Please....

Submitted by PI - Traveler on 05/29/2012

ashrafkhatri79 -


A couple of thoughts:
-The two P6KE200's in parallel won't be useful. They are both 200V zener diodes with a 5% tolerance. If one is slightly lower (199V) and the other slightly higher (201V), the part with the lower voltage will turn on first and carry all the clamp dissipation current. This is probably why they're shorting out.
-Implementing the CV/CC circuitry with secondary side feedback in the TopSwitch product line can be very difficult. I would suggest working in stages. First, get your design working as CV only (disable the CC portion of the feedback circuitry). Then work on adding the CC portion of the feedback circuitry.


I've attached a simple 14V, 4A TopSwitch249 design to this reply, maybe you can use this as a better starting point for your design.


A few other thoughts:


-The output you're using for your fan will have a decent amount of current ripple and noise on it. This is to be expected with how DC fans work in general. You will want to make sure that this output isn't part of the feedback regulation loop. You'll also want to make sure that any noise from this output isn't coupling into your main output.
-Some batteries types require specific charging profiles. Depending on the battery type, there are some different ICs available that can help optimize the charging profile to match a certain battery technology.

-The Traveler

Submitted by Rorence on 07/17/2017

Hello, guys. Thanks for your sharing. Before reading your post, the only charger that I have used is 300w power inverter to charge camera battery. Since I'm used to travel around the city. So I need a charger to charge camera battery, shaver and phone in the trip. Easy to connect it with car cigarette lighter charger outlet. Maybe you want to learn more details about this power inverter on bestekmall. Hope this tip is useful to you. Best wishes.