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kevinjameswiebe asked

DC/DC Converter to Charge Yeti GoalZero

I'm using a smart non-isolated 12/24 volt DC-DC converter (360W) in power supply mode to charge a Yeti GoalZero 1500x. The input of the GoalZero is an MPPT meant to have solar panels connected to it. It works okay but the DC-DC converter won't hold the output voltage I set. If I set the convertor output to 30V the actual output will be 16V, the power to the GoalZero is about 280W. The MPPT circuit in the GoalZero will be adjusting its impedance to find the "sweet spot" but why does this cause the converter to drop its output voltage?

orion dc-dc
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kevgermany answered ·
First guess is that the Orion sees the Yeti as a short circuit.

These units are not designed to work together, so odd behaviours is to be expected.


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kevinjameswiebe avatar image kevinjameswiebe commented ·
I think you're right. Maybe not a short circuit but the MPPT function is obviously lowering the impedance too much.
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