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Abhi Verma
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ROBOToTHON 2017 Mentor, Electronics Engineer (Project Leader)
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PV Solar Charger Circuit Diagram

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Ðeejay Kital

Introduced a new component IRFp064N. it will be helpful for high power handling applications.

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Abhi Verma
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I have tested 10Amp current from irfz44n. And the temperature rise was around 50c. Max current rating is 49A. I think it can handle 15Amp continuously with heat sink and colling Fan. And you are right IGBT and another mosfet as D1 is great for efficiency. But we have to keep cost minimum. Just for that I dropped P channel mosfet with N channel. As n N channel are cost effective and have higher power ratings.

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Ðeejay Kital
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IRFP064N Power MOSFET 55V 0.008Ω 110A TO-247 IR
i think this is more efficient. having lowest rds on = 0.008Ω but you need a driver.,
or you can parallel 6pcs irfz44n to achieve 60 amperes current without worrying the temperature just put big heat sink. but you should use logic level mosfet to have better results. using irz44n without driver will have high resistance. you should use IRLZ44N, it is an logic level mosfet.

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Abhi Verma
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thats a good idea. i’ll use this for more power handling. and irfz44n is also a logic level mosfet. thats why i,m using it, however i,m driving it with 10-15V pulse to ensure lowest resistance and full saturation.

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Ðeejay Kital
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do not paraller the inductor, i find it ineffective… use big inductor., you can get it at computer psu.

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Abhi Verma
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I searched for that but didn’t find any. Their core will be saturated about ve 5 Amp. I used them in parallel and kept them at a distance from each other ensuring emf isolation. So they are interfering with each other. Also as every single core is able to handle 5 Amp they all can handle 20 Amp in parallel.
Anyways using a single inductor is always best option.

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Ðeejay Kital
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any update to your circuits?

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