Dear All,
If I have a voltage input from a generated powered by wind mill. The power generated ranges from 0-40V
I want to use this power to simply power a 3V Cree LED.
It seems to me that I can create a SEPIC DC-DC circuit and a current mode DC-DC converter IC to provide constant current to the LED.
Given I have an 8051 MCU with fast enough ADC (with voltage reference) and adjustable PWM capability.
I use this 8051 to switch an external MOS.
Is it possible to create a 8051 based Dc-DC circuit?
Will this method yield lower efficiency?
Does the ADC need have high enough sampling rate in order to make it work?
Thank you and best regards,
Tony Chun Tung Siu