Hello,
I'm looking to design a stupid simple DC-DC converter with two goals only:
Can it be done?
The power supply is a Prius. The Prius Gen 2 DC-DC converter (used instead of an alternator to charge the onboard 12v battery) is capable of supplying up to 100 amps with an output of 13.8v.
The load is charging a 12v deep cycle Battery connected to a 3000w inverter.
Some potential strategies might include:
depletion mosfets as current limiting devices
Buck Boost Converter
Power Jfets?
Further info for those who are interested:
The reason for having the deep cycle battery is that I have intermittent loading of the inverter that will exceed the 100 amps that the Prius can provide, and to keep from ruining the electronics on the Prius I need a current limiting circuit.
I'm not terribly concerned about power consumption of the current limiting circuit, as the Prius will provide ample power, but obviously efficiency is always better.
If the solutions you come up with supply less than 100 amps, I'd be willing to consider them, especially if the price is right, as the inverter has a low-voltage cutout which would notify me that the Prius isn't able to keep the deep cycle battery charged sufficiently.
I'm looking to design a stupid simple DC-DC converter with two goals only:
- Current regulation to no more than 90 amps
- Lowest possible cost (total cost sub $50)
Can it be done?
The power supply is a Prius. The Prius Gen 2 DC-DC converter (used instead of an alternator to charge the onboard 12v battery) is capable of supplying up to 100 amps with an output of 13.8v.
The load is charging a 12v deep cycle Battery connected to a 3000w inverter.
Some potential strategies might include:
depletion mosfets as current limiting devices
Buck Boost Converter
Power Jfets?
Further info for those who are interested:
The reason for having the deep cycle battery is that I have intermittent loading of the inverter that will exceed the 100 amps that the Prius can provide, and to keep from ruining the electronics on the Prius I need a current limiting circuit.
I'm not terribly concerned about power consumption of the current limiting circuit, as the Prius will provide ample power, but obviously efficiency is always better.
If the solutions you come up with supply less than 100 amps, I'd be willing to consider them, especially if the price is right, as the inverter has a low-voltage cutout which would notify me that the Prius isn't able to keep the deep cycle battery charged sufficiently.