LED driver selection

2 posts / 0 new

Dear Sir

 

We intend to use LED  driver as per following projects : Please advise suitable part no. and application note 

 

1)

There will be five LED strings of white,Red, Green,Blue and amber as PWM output from micro controller with digital dimming to drive LED driver each of 5 watts from 24 Volt supply : The idea is color mixing suitable for machine vision application

Please suggest suitable drive 

 

2)

There will be five LED strings of white,Red, Green,Blue and amber as PWM output from micro controller with digital dimming to drive LED driver each of 9 watts from 120 or 230V Mains supply : The idea is color mixing suitable for Medical Therapy application

Please suggest suitable drive  

 

rgds

Yours Sincerely

 

JS Gandhi

 

Raj Overseas

 

24526, Swallow Cove lane Katy : TX 77474 

 

Ph: 281-578-7682

For your application, I believe you need a constant voltage supply. For item 1, most of the available devices at PI are offline switcher and might not work at 24V input. Nevertheless, I found TopSwitch-JX can start at 18V drain voltage and can deliver the 25W total power.

For item 2, both TopSwitch-JX and LinkSwitch-HP can deliver 45W.

You may use PIExpert Online to design your project:

                https://piexpertonline.power.com/