|
|
Per my experience ,Diodes + RC-Control , inverter and PowerClamp is better for out pad
8 F2 ~9 v$ P$ E8 S6 sGenerally speaking ,the root cause of ESD failed is from below." @. p' m- s9 |! }
<i>clamp NMOS's ability.: R) r* U. S/ H, m( Y z
<ii>clamp NMOS's turn-on rate.
8 @2 P0 \* b/ n1 M0 M<iii>Not follow design rule.......................
/ h! x2 M; w- \3 P! HAs we know ,RC-control is to keep clamp NMOS off when IC is on normal operation.(us)
- P* [' a' k8 R8 I$ Y8 FWhen sufferred ESD pulse(ns),GGNMOS be turned on by coupling .
. {: C* c% S0 ]If adding inverter between RC and clamp NMOS,it will speed up clamp NMOS turned on., \+ t& [3 O7 L1 i A
Just for reference !!! |
|
[複製鏈接]
IP卡
狗仔卡
發表於 2010-5-10 14:38:41
顯身卡