I am new to power design, so hope I dont ask stupid questions. I have a chinese engineer team who have done a AC/DC power design for us. It converts 230V AC input down to 12V DC output. It uses a TOP258PN for controling.
As I understand from the datasheet the external 22k resistor R44 (see attached schematic drawing) sets the current limit.
I have measured it to be:
207V AC input -> 12V DC current limit = 0.86A
230V AC input -> 12V DC current limit = 0.88A
253V AC input -> 12V DC current limit = 0.92A
Is there other important parameters like temperature, component tolerances etc, that will have measurable impact on the current limit?
How close to this current limit would be a reasonable considering everything would be ok to say to a cutsomer that the power supply can deliver (meaning 12V DC output current)
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