help about LTC3108 (want to design an MPP control)

[Miromar]

Hi all,

Actually I am working on human body heat energy harvesting, and I am using LTC3108 . I want to design an MPP control for this boost converter but I don't know what is the PIN working as feedback pin (on other boost converters there is the FB Pin which I don't find in this case) is this feasable ?

Other question, pleaase where can I find LTC3108 device for ISIS library (I want to simulate the MPP algorithm later and I couldn't create this device :/)

Looking forward your answers, and thank you all

 

[FvM]

You'll find a LTC3108 model in LTSpice, probably the only way to simulate the device with a detailed model.

If you study the LTC3108 datasheet and block diagram, you'll understand why it hasn't a feedback pin. It supports fixed programmable voltage levels.

Generally MPP can only work if your system has a variable load, e.g. an energy storage device or a grid that can sink variable power levels. This is a conceptual problem of your project that should be clarified before starting detail engineering.

 

[Miromar]

Thank you for your prompt reply and your help.
I was indeed wondering if it will be feasable by using this step-up converter.