Input inrush current

Active inrush current limitation (NTCs that are bridged by a MOSFET) limits the inrush current after the input voltage is switched on.

The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch‑on.

Input inrush current	Max.	8 A	At +25°C ambient, cold start
	Max.	10 A	At +40°C ambient, cold start
	Typ.	6 A_peak	At +25°C ambient, cold start
	Typ.	8 A_peak	At +40°C ambient, cold start
Inrush energy	Max.	1 A²s	At +40°C ambient, cold start

Input inrush current 1: — Fig.4: Typical input inrush current behavior at nominal load and 25°C ambient

Input: 24 Vdc
Output: 24 V, 10 A, constant current load
Ambient: 25°C

Input current: 2 A / DIV
Input voltage: 5 V / DIV
Output voltage: 5 V / DIV
Time basis:100 ms / DIV