Hello,
I designed a 14V-16V to 20V/2A boost converter on a printed circuit and after testing the PCB I get a lot of heat out of it.
This is the first time I am building this kind of circuit and dealing with heat issues, so I like to ask for some feedback and
advice.
Below you can see my circuit and some information about it:
The areas of heat is U7, Q10 and L4.
I've tested the circuit with 15V constant supply voltage and 1A output.
The System is meant to be connected to a 4s Li-Po battery charger circuit (max 1.5A) that is tested and verified.
One thing that I changed from the schematic is that instead of MTP3055VL I put an IRFP250MPbF because the order was delayed,
I couldn't wait and that was the closest to it that I had for a mosfet.
Regarding this circuit I have the following questions:
1) Is there something that I can change in the design to reduce the heat generation
2) What would be a proper heat sink for the heating components
3) Is it possible to add a heat sink on a toroidal coil and how you can deal with the generated heat
I also include a few pictures about the circuit that might be helpful.
Any thoughts or comments are welcome.
Thanks!
I designed a 14V-16V to 20V/2A boost converter on a printed circuit and after testing the PCB I get a lot of heat out of it.
This is the first time I am building this kind of circuit and dealing with heat issues, so I like to ask for some feedback and
advice.
Below you can see my circuit and some information about it:
The areas of heat is U7, Q10 and L4.
I've tested the circuit with 15V constant supply voltage and 1A output.
The System is meant to be connected to a 4s Li-Po battery charger circuit (max 1.5A) that is tested and verified.
One thing that I changed from the schematic is that instead of MTP3055VL I put an IRFP250MPbF because the order was delayed,
I couldn't wait and that was the closest to it that I had for a mosfet.
Regarding this circuit I have the following questions:
1) Is there something that I can change in the design to reduce the heat generation
2) What would be a proper heat sink for the heating components
3) Is it possible to add a heat sink on a toroidal coil and how you can deal with the generated heat
I also include a few pictures about the circuit that might be helpful.
Any thoughts or comments are welcome.
Thanks!