設計mode detector

uomuom

我想設計一個
Vin=2.7~4.2v
8 w5 {) c  O1 hVout=3.6v

7 q1 I+ g. n& P; k/ H2 @+ @4 ?* G當Vin<=Vout, 則mode detector輸出=3.3v
+ B; V8 C. I6 ?) T" v當Vin>Vout,   則mode detector輸出=0v
1 ^8 L7 n3 x4 U3 T8 z; E% Y; z
* i1 r8 c& P. Q) H6 g我所謂的mode detector.
9 v8 |: ]# @5 S+ a
, L( n# \4 J( j' d! X' B0 l
" {& B- Q5 U6 I- X% ~# a) B用比較器實現的話,Vin在接近3.6v時就會有判斷錯誤的窘境..

問題很簡單..可是卻不知該怎麼辦?

1 _+ \9 H: @+ V' Y" \4 E! [各位大大幫幫忙吧.

Malong

Maybe u can use the hysteresis comparator to avoid it.