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1 L9 T0 X3 q+ \3 ~+ e6 iInrush current, input surge current, or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on.5 v- Y$ O1 A3 d0 t0 C
7 Y4 R% z }9 i4 [9 t* XThe main cause is the current was used to charge into capacitors.6 H: b/ s7 `! q+ p
To reduce this problem, I often don't use a TVS. Instead I always use a inrush current limit circuit like this:: C7 `1 Z2 ?- T2 q
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6 {4 p7 s4 P0 g+ `; W9 wFor detail infos and how it work, please read attached document.) h0 _) r+ n8 ]4 p
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