I am trying to implement a TL494 for a 12-24V Boost converter with a continous power output of 120W (200W peak for >50ms / <20% of the time).
There is however one problem. I want to get the booster working and have no proper way to verify some parameters.
The TL494 is configured, to switch off for a short time, if the voltage drops below 10V on the TL494.
The configuration is as follows in my simulation:
PCI-e 6 Pin Power input: 12.6V at 100mOhm, PCI-e Power input via PCI-e Connector 200mOhm. This however gets spikes into the output capacitors (10x1mF [100mOhm/capacitor], 10x 10uF [50mOhm/capacitor] for higher frequency). The spikes rise to a max of aproximately 60A!!! This also means a very very high current on the input. This could lead to system instability or even crash the PC...
What is a realistic resistance on the PCI-e connector VCC and the PCI-e 6 Pin? 12.6V is idle voltage on many supplies. Definitely would drop a bit... Whatever.
I would love a very cheap IC (tiny+SMD!), that just gives a logic output. The lower, the detect voltage is, the better for efficiency. It is absolutely required, to be a very low voltage drop detecting high side current monitor with digital output (don't mind, if output inverted or so). The V_detect should be less than 60mV for a max of 1W of TDP for the shunt.
Thank you.