Hey everybody!

I would like to assemble an Energy Harvesting circuit . The main idea is that I put an AC Voltage from a coil as Input and get a DC Voltage at the output .

For me the LTC3331 from Analog is the best option : https://www.analog.com/media/en/technical-documentation/data-sheets/3331fc.pdf

I’m inducing voltage at the coil ( 10V max with 0.5A).
The Coil and a Back up Battery will be connected(with separated inputs) to LTC3331. Important thing is that I can’t induce the voltage in the coil all time , and in a time when I get no voltage in the coil the back up battery will compensate the lack of input power.
The only problem is that the max current at the LTC3331’s Output is 50mA .

If you know similar IC with a bigger Output current (2-3 A or more ), I would really appreciate your help !
Thanks!

 

It sounds to me like you need a battery charge controller designed for wind applications. "Energy harvesting" tends to imply very low energy levels. You've got more - 5W !! - and are in the range of normal electronics.