Hi,
We have a 4kW PFC we are doing. (100-265VAC, +/-180V)
The input is a Boost PFC...it has 4.3mF of output capacitance.
We want to inrush into it through a resistor, then short out the resistor with a relay.
We want the resistor to be 20 Ohms. Whats the smallest 20r resistor we can use for this.?
We dont want an NTC as they dont work when hot.
We are finding that resistor datasheets give Peak repetitive power pulse ratings, and continuous power ratings, but absolutely nothing which pertains to one-off inrush events.
We have a 4kW PFC we are doing. (100-265VAC, +/-180V)
The input is a Boost PFC...it has 4.3mF of output capacitance.
We want to inrush into it through a resistor, then short out the resistor with a relay.
We want the resistor to be 20 Ohms. Whats the smallest 20r resistor we can use for this.?
We dont want an NTC as they dont work when hot.
We are finding that resistor datasheets give Peak repetitive power pulse ratings, and continuous power ratings, but absolutely nothing which pertains to one-off inrush events.