EE Designer for high power DC-DC boost converter 12V to 36V - 60A

[Cvijo]

Hi,

I am looking for designer who has experience with high power boost converters from 12V to 36V and minimum 60A. (12V to 24V version too)
Converter will power 36V (or 24V) electric motor on the boat from 1300Ah 12V LiFePo4 battery bank and must be able to provide continues 60A.
Battery bank can't be of higher voltage.

If possible to use passive cooling (aluminum PCB, high power mosfets) without fans
I would need current and voltage monitoring (current in, out, voltage in and out).
Communication and monitoring part I can manage but converter with that high power i don't have a knowledge to make.

[gmr1981]

Hi,

I recently designed a DC/DC converter operating in a similar voltage range, using only passive cooling. The maximum output current of the design I did was 20A, but this was limited only by the customer's specification.

I am quite busy at the moment, so I can't get involved directly, but I recommend looking at the LT8210 from Analog Devices. This is a buck/boost converter, but in the design I did it spends most of its time in boost mode. At switching frequencies of 100kHz the MOSFETs barely got hotter than about 40 degC when handling 400W. The design was based on sandwiching the board to an aluminium heatsink using a thermal filler pad from Wurth electronics (401 010 05).

The LT8210 also features an output to control a polarity protection MOSFET, which you may find useful in your application.

Best wishes,
Greg

[billymarkovsky]

I done a decent amount of DC-DC converter designs and feel I would be able to help. Have never done an aluminum core PCB but always thought it would be fun. If you haven't found someone yet please send me a message and we can discuss the details/see if I'm a good fit.