Input inrush current

An NTC limits the input inrush current after the input voltage is switched on. The inrush current surge depends on the input voltage and the ambient temperature. The output load has no influence on the value of the inrush current surge.

The charge current of the interference suppression capacitors during the first few microseconds after switching on is not taken into account.

 

 

AC 100V

AC 120V

AC 230V

 

Input inrush current

Typ.

14Apeak

18Apeak

40Apeak

At +40°C, cold start

Typ.

12Apeak

16Apeak

35Apeak

At +25°C, cold start

Max.

17Apeak

22Apeak

48Apeak

At +40°C, cold start

Max.

15Apeak

20Apeak

43Apeak

At +25°C, cold start

Inrush energy

Max.

0.3A2s

0.4A2s

1.7A2s

At +40°C, cold start

Input inrush current 1:
Switch-on behavior at nominal load, typ., 230Vac@25°C; zoom inrush current surge
Input inrush current 2:
Switch-on behavior at nominal load, typ., 120Vac@25°C; zoom inrush current surge