Gokkul55
Computer
- Mar 1, 2013
- 44
I am implementing a MPPT solar battery charger (buck converter). The type of converter design have been discussed in my previous post
I have finally decided to implement a Interleaved buck converter with 4 leg. With separate driver and mosfet pairs.
My Design Specs:
12V - 500 Watt Charger (That gives a max current of 41.67A)
Current per converter - 41.67A/4 = 10.42A(per converter)
Vinmax- 18V
Vinmin - 15V
Vout - 11V
Iout - 15A/leg (4 leg in parallel therefore 60A in total, well above the max current produced from panel to be safe)
Freq - 500KHz
Iripple - 1A
Substitute the values here for inductance calculation
Inductance - 8.759x10-6 H
I have chosen the inductor
Questions:
[ol 1]
[li]Is my choice of inductor good?[/li]
[li]Do i only have to worry about the max current in the inductor (Isat) or do i have to worry about the voltage across an inductor too?[/li]
[/ol]
Thanks
Regards
Gokkul
I have finally decided to implement a Interleaved buck converter with 4 leg. With separate driver and mosfet pairs.
My Design Specs:
12V - 500 Watt Charger (That gives a max current of 41.67A)
Current per converter - 41.67A/4 = 10.42A(per converter)
Vinmax- 18V
Vinmin - 15V
Vout - 11V
Iout - 15A/leg (4 leg in parallel therefore 60A in total, well above the max current produced from panel to be safe)
Freq - 500KHz
Iripple - 1A
Substitute the values here for inductance calculation
Inductance - 8.759x10-6 H
I have chosen the inductor
Questions:
[ol 1]
[li]Is my choice of inductor good?[/li]
[li]Do i only have to worry about the max current in the inductor (Isat) or do i have to worry about the voltage across an inductor too?[/li]
[/ol]
Thanks
Regards
Gokkul