led drivers

Posted by: sheldon on 11/15/2011

Hi
i have following requirements for an led driver, i/p : universal, o/p:12V/10A

and for the other i/p: universal, o/p:12V/6A, please help me in selecting the correct pi device, i prefer not to use any device from hyper family series because of cost....
can it be done by using either tophx/jx... of course the specs include cv/cc and isolated

thanking you

Comments

Hi,

For the power level of your applications, the TOPSwitch JX would be the most appropriate choice. This could be implemented as a CV/CC power supply.

Please refer to the web page for TOPSwitch JX using the link provided below to selevct the most appropriate part depending on the specification of your design:

http://www.powerint.com/en/products/topswitch-family/topswitch-jx

SHould you need help with putting together a design, I encourage you to use PIExpert design software, which can be downloaded free of charge from our web site. Please follow the instructions on the poage for which a link is provided below:

http://www.powerint.com/en/design-support/pi-expert-design-software

Regards

PI-Sarek

hi,
thank you for the reply,

in regards to the CV this can be achieved with either zener/tl431 but what about the CC circuit how do i build it

regards

Hi,

One common way of achieving a CV/CC feedback circuit is to combine the current detection circuit with the TL431 voltage feedback circuit.

The link below provides a design example:

http://www.powerint.com/sites/default/files/PDFFiles/di12.pdf

Regards

PI-Sarek