what is the difference

GP SMPS - Constant Voltage output
Charger - Need CC-CV control
LED Driver - Constant Current output

Thanks! Is there any way to use regular power supply as LED power supply or charger? If it may be not perfect but ok for using, what the changes should be done.

I would like to open sales in North American in USA. Do you have led power supply and charger product which you may interest in to sell in USA?

Please let me know at 0186lu@gmail.com

To add CC-CV or CC function in GP-SMPS, normally you need some external component like Comparator/Op-Amp/House-keeping to detect current/voltage information then feedback to PWM of GP-SMPS.

To identify which solution you want, you need to know what's the market u r addressing or investigating.

Thx.

For more information you could refer to:
http://www.st.com/stonline/domains/applications/indexapplication.htm