I have been playing around with achieving better power in my 30-year old RV. I want to create both AC and DC systems to provide power. This has essentially 3 routes from my battery to device:
- Samlex 300W AC Pure Sine Wave Inverter. - Solid system.
- 12v to 12v or lower (USB). This works great too, pretty standard setup.
- Greater than 12v via Boost Converter for me and my wife's laptops. This is where we are having issues.
The issue seems to be voltage drop as the computer draws more power. Most of our electronics work fine, but my 'beast' of a laptop is troublesome. It works perfectly fine on the inverter with the power brick it came with (which is rated 19.5v, 9.23A). I am currently typing this on the laptop and i have a current meter hooked up, and its pulling 2A. The boost converter is rated for 600W and doesn't seem to break a sweat, its maybe a degree about room temp.
When it hits about 5A the boost converter cannot seem to keep up (im assuming just momentarily), and the laptop disconnects from my power system and goes to battery. I initially thought the voltage was dropping but I cannot confirm this. This feels like an issue that could be fixed by adding more capacitance? IE, just slap a big car audio-style capacitor between the computer and the boost converter? Is this even worth it? I wonder if I should just use the inverter for this laptop, since none of our other electronics have issues.
Also, I am not an EE, but I will do my best to follow along with the more technical answers.