d u a l e n h a n c e m e n t m o d e f i e l d e f f e c t t r a n s i s t o r ( n a n d p c h a n n e l ) p r e l i m i n a r y a b s o l u t e m a x i m u m r a t i n g s ( t a = 2 5 c u n l e s s o t h e r w i s e n o t e d ) p a r a m e t e r s y m b o l n - c h a n n e l p - c h a n n e l u n i t d r a i n - s o u r c e v o l t a g e v d s v g a t e - s o u r c e v o l t a g e v g s v d r a i n c u r r e n t - c o n t i n u o u s @ t j = 1 2 5 c - p u l s e d i d 2 . 0 a a a w i d m d r a i n - s o u r c e d i o d e f o r w a r d c u r r e n t i s m a x i m u m p o w e r d i s s i p a t i o n p d o p e r a t i n g j u n c t i o n a n d s t o r a g e t e m p e r a t u r e r a n g e t j , t s t g - 5 5 t o 1 5 0 c t h e r m a l c h a r a c t e r i s t i c s t h e r m a l r e s i s t a n c e , j u n c t i o n - t o - a m b i e n t r q j a 6 2 . 5 / w c a a a a b 3 0 7 . 0 2 8 1 . 7 - 3 0 - 5 . 0 - 2 0 - 1 . 7 1 p r o d u c t s u m m a r y v d s s i d r d s ( o n ) ( m w ) 3 0 v 7 a 3 2 @ v g s = 1 0 v 5 0 @ v g s = 4 . 5 v s o - 8 1 1 2 3 4 8 7 6 5 s 1 g 1 s 2 g 2 d 1 d 1 d 2 d 2 ( n - c h a n n e l ) p r o d u c t s u m m a r y v d s s i d r d s ( o n ) ( m w ) - 3 0 v - 5 a 5 2 @ v g s = - 1 0 v 9 0 @ v g s = - 5 v ( p - c h a n n e l ) s a m h o p m i c r o e l e c t r o n i c s c o r p . m a x m a x 2 0 2 0 s d m 8 9 5 8
s d m 8 9 5 8 = p a r a m e t e r s y m b o l c o n d i t i o n m i n t y p m a x u n i t o f f c h a r a c t e r i s t i c s d r a i n - s o u r c e b r e a k d o w n v o l t a g e b v d s s = v g s 0 v , i d 2 5 0 u a = 3 0 v z e r o g a t e v o l t a g e d r a i n c u r r e n t i d s s v d s 2 4 v , v g s 0 v = = 1 u a g a t e - b o d y l e a k a g e i g s s v g s 2 0 v , v d s 0 v = = n a o n c h a r a c t e r i s t i c s b g a t e t h r e s h o l d v o l t a g e v g s ( t h ) v d s v g s , i d = 2 5 0 u a = 1 1 . 8 v d r a i n - s o u r c e o n - s t a t e r e s i s t a n c e r d s ( o n ) v g s 1 0 v , i d 6 . 0 a v g s 4 . 5 v , i d 5 . 0 a o n - s t a t e d r a i n c u r r e n t i d ( o n ) v d s = 5 v , v g s = 1 0 v 3 0 1 6 a s f o r w a r d t r a n s c o n d u c t a n c e f s g v d s 5 v , i d 6 . 0 a d y n a m i c c h a r a c t e r i s t i c s c i n p u t c a p a c i t a n c e c i s s c r s s c o s s o u t p u t c a p a c i t a n c e r e v e r s e t r a n s f e r c a p a c i t a n c e v d s = 1 5 v , v g s = 0 v f = 1 . 0 m h z 5 1 0 p f 2 3 5 p f p f 5 6 s w i t c h i n g c h a r a c t e r i s t i c s c t u r n - o n d e l a y t i m e r i s e t i m e t u r n - o f f d e l a y t i m e t d ( o n ) t r t d ( o f f ) t f v d d = 1 5 v , i d = 1 a , v g e n = 1 0 v , r l = 1 5 w r g e n = 1 0 w 2 1 4 0 n s n s n s n s 2 0 4 0 2 7 5 5 1 1 5 2 3 0 t o t a l g a t e c h a r g e g a t e - s o u r c e c h a r g e g a t e - d r a i n c h a r g e q g q g s q g d v d s = 1 5 v , i d = 1 a , v g s = 1 0 v 1 3 n c n c n c 6 2 . 1 c f a l l t i m e = = = = = = 2 3 n - c h a n n e l e l e c t r i c a l c h a r a c t e r i s t i c s ( t a 2 5 c u n l e s s o t h e r w i s e n o t e d ) m o h m m o h m 1 0 0 5 0 3 2 2 0 v d s = 1 5 v , i d = 1 a , v g s = 1 0 v n c v d s = 1 5 v , i d = 1 a , v g s = 4 . 5 v 1 0 2
s d m 8 9 5 8 = p a r a m e t e r s y m b o l c o n d i t i o n m i n t y p m a x u n i t o f f c h a r a c t e r i s t i c s d r a i n - s o u r c e b r e a k d o w n v o l t a g e b v d s s = v g s 0 v , i d - 2 5 0 u a = - 3 0 v z e r o g a t e v o l t a g e d r a i n c u r r e n t i d s s v d s - 2 4 v , v g s 0 v = = - 1 g a t e - b o d y l e a k a g e i g s s v g s 2 0 v , v d s 0 v = = n a g a t e t h r e s h o l d v o l t a g e v g s ( t h ) v d s v g s , i d = - 2 5 0 u a = - 1 - 1 . 7 - 3 v d r a i n - s o u r c e o n - s t a t e r e s i s t a n c e r d s ( o n ) v g s - 1 0 v , i d - 4 . 5 a 5 2 v g s - 5 v , i d - 4 a 9 0 o n - s t a t e d r a i n c u r r e n t i d ( o n ) v d s = - 5 v , v g s = - 1 0 v - 2 0 1 0 a s f o r w a r d t r a n s c o n d u c t a n c e f s g v d s - 5 v , i d - 4 . 5 a d y n a m i c c h a r a c t e r i s t i c s c i n p u t c a p a c i t a n c e c i s s c r s s c o s s o u t p u t c a p a c i t a n c e r e v e r s e t r a n s f e r c a p a c i t a n c e v d s = - 1 5 v , v g s = 0 v f = 1 . 0 m h z 8 6 0 p f 4 7 0 p f p f 1 8 0 s w i t c h i n g c h a r a c t e r i s t i c s c t u r n - o n d e l a y t i m e r i s e t i m e t u r n - o f f d e l a y t i m e t d ( o n ) t r t d ( o f f ) t f v d = - 1 5 v , r l = 1 5 i d = - 1 a , v g e n = - 1 0 v , r g e n = 1 0 w 9 2 0 n s n s n s n s 1 0 4 0 3 7 9 0 2 3 1 1 0 t o t a l g a t e c h a r g e g a t e - s o u r c e c h a r g e g a t e - d r a i n c h a r g e q g q g s q g d v d s = - 1 5 v , i d = - 5 . 3 a , v g s = - 1 0 v 1 5 n c n c n c 3 4 c f a l l t i m e = = = = = = w 3 o n c h a r a c t e r i s t i c s b u a 1 0 0 m o h m m o h m p - c h a n n e l e l e c t r i c a l c h a r a c t e r i s t i c s ( t a 2 5 c u n l e s s o t h e r w i s e n o t e d ) 2 0 n c v d s = - 1 5 v , i d = - 5 . 3 a , v g s = - 1 0 v v d s = - 1 5 v , i d = - 5 . 3 a , v g s = - 4 . 5 v 1 0 . 5 8 . 7
4 s d m 8 9 5 8 p a r a m e t e r s y m b o l c o n d i t i o n m i n t y p m a x u n i t e l e c t r i c a l c h a r a c t e r i s t i c s ( t a = 2 5 c u n l e s s o t h e r w i s e n o t e d ) d r a i n - s o u r c e d i o d e c h a r a c t e r i s t i c s d i o d e f o r w a r d v o l t a g e v s d v g s = 0 v , i s = 1 . 7 a n - c h 0 . 7 7 1 . 2 - 0 . 8 2 - 1 . 2 v g s = 0 v , i s = - 1 . 7 a p - c h v b c n o t e s c . g u a r a n t e e d b y d e s i g n , n o t s u b j e c t t o p r o d u c t i o n t e s t i n g . b . p u l s e t e s t : p u l s e w i d t h 3 0 0 u s , d u t y c y c l e 2 % . ?? ?? a . s u r f a c e m o u n t e d o n f r 4 b o a r d , t 1 0 s e c . ?? n - c h a n n e l f i g u r e 1 . o u t p u t c h a r a c t e r i s t i c s f i g u r e 2 . t r a n s f e r c h a r a c t e r i s t i c s f i g u r e 4 . o n - r e s i s t a n c e v a r i a t i o n w i t h d r a i n c u r r e n t a n d t e m p e r a t u r e f i g u r e 3 . c a p a c i t a n c e v d s , d r a i n - t o s o u r c e v o l t a g e ( v ) v g s , g a t e - t o - s o u r c e v o l t a g e ( v ) v d s , d r a i n - t o - s o u r c e v o l t a g e ( v ) i d , d r a i n c u r r e n t ( a ) i d , d r a i n c u r r e n t ( a ) c , c a p a c i t a n c e ( p f ) o n - r e s i s t a n c e ( o h m s ) i d , d r a i n c u r r e n t ( a ) r d s ( o n ) , 2 5 2 0 1 5 1 0 5 0 0 . 0 1 . 0 2 . 0 3 . 0 4 . 0 5 . 0 6 . 0 - 5 5 c 2 5 c t j = 1 2 5 c t j = 1 2 5 c 2 5 c - 5 5 c 0 . 0 3 0 0 . 0 2 5 0 . 0 2 0 0 . 0 1 5 0 . 0 1 0 0 . 0 0 5 0 0 5 1 0 1 5 2 0 v g s = 1 0 v 2 5 2 0 1 5 1 0 5 0 0 0 . 5 1 1 . 5 2 2 . 5 3 v g s = 1 0 , 9 , 8 , 7 , 6 , 5 , 4 v v g s = 3 v 1 2 0 0 1 0 0 0 8 0 0 6 0 0 4 0 0 2 0 0 0 0 5 1 0 1 5 2 0 2 5 3 0 c i s s c o s s c r s s
f i g u r e 5 . g a t e t h r e s h o l d v a r i a t i o n w i t h t e m p e r a t u r e f i g u r e 6 . b r e a k d o w n v o l t a g e v a r i a t i o n w i t h t e m p e r a t u r e v t h , n o r m a l i z e d g a t e - s o u r c e t h r e s h o l d v o l t a g e g f s , t r a n s c o n d u c t a n c e ( s ) b v d s s , n o r m a l i z e d d r a i n - s o u r c e b r e a k d o w n v o l t a g e i s , s o u r c e - d r a i n c u r r e n t ( a ) w i t h d r a i n c u r r e n t i d s , d r a i n - s o u r c e c u r r e n t ( a ) f i g u r e 8 . b o d y d i o d e f o r w a r d v o l t a g e v a r i a t i o n w i t h s o u r c e c u r r e n t v s d , b o d y d i o d e f o r w a r d v o l t a g e ( v ) t j , j u n c t i o n t e m p e r a t u r e ( c ) t j , j u n c t i o n t e m p e r a t u r e ( c ) 5 4 0 . 0 1 0 . 0 1 . 0 0 . 4 0 . 6 0 . 8 1 . 0 1 . 2 1 . 4 1 . 0 9 1 . 0 6 1 . 0 3 1 . 0 0 0 . 9 7 0 . 9 4 0 . 9 1 - 5 0 - 2 5 0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0 v d s = v g s i d = 2 5 0 u a - 5 0 - 2 5 0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0 1 . 1 5 1 . 1 0 1 . 0 5 1 . 0 0 0 . 9 5 0 . 9 0 0 . 8 5 i d = - 2 5 0 u a 2 0 1 5 1 0 5 2 5 0 0 5 1 0 1 5 2 0 v d s = 1 5 v s d m 8 9 5 8 n - c h a n n e l
s d m 8 9 5 8 f i g u r e 1 . o u t p u t c h a r a c t e r i s t i c s f i g u r e 2 . t r a n s f e r c h a r a c t e r i s t i c s f i g u r e 3 . c a p a c i t a n c e - v d s , d r a i n - t o s o u r c e v o l t a g e ( v ) - v g s , g a t e - t o - s o u r c e v o l t a g e ( v ) - v d s , d r a i n - t o - s o u r c e v o l t a g e ( v ) c , c a p a c i t a n c e ( p f ) - i d , d r a i n c u r r e n t ( a ) - i d , d r a i n c u r r e n t ( a ) 5 2 5 2 0 1 5 1 0 5 0 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 4 v 3 v 2 5 c 2 0 1 6 1 2 8 4 0 0 0 . 5 1 1 . 5 2 2 . 5 3 - 5 5 c t j = 1 2 5 c 6 f i g u r e 4 . o n - r e s i s t a n c e v a r i a t i o n w i t h t e m p e r a t u r e o n - r e s i s t a n c e ( o h m s ) r d s ( o n ) , 1 . 8 1 . 6 1 . 2 0 . 8 1 . 4 1 . 0 0 . 6 - 5 0 0 5 0 1 0 0 1 5 0 v g s = - 1 0 v t j , j u n c t i o n t e m p e r a t u r e ( c ) i d = - 5 . 3 a ( n o r m a l i z e d ) 0 5 1 0 1 5 2 0 2 5 3 0 c i s s c o s s c r s s 3 0 0 0 2 5 0 0 2 0 0 0 1 5 0 0 1 0 0 0 5 0 0 0 - v g s = 1 0 , 9 , 8 , 7 , 6 , 5 v p - c h a n n e l
f i g u r e 5 . g a t e t h r e s h o l d v a r i a t i o n w i t h t e m p e r a t u r e f i g u r e 6 . b r e a k d o w n v o l t a g e v a r i a t i o n w i t h t e m p e r a t u r e v t h , n o r m a l i z e d g a t e - s o u r c e t h r e s h o l d v o l t a g e g f s , t r a n s c o n d u c t a n c e ( s ) b v d s s , n o r m a l i z e d d r a i n - s o u r c e b r e a k d o w n v o l t a g e - i s , s o u r c e - d r a i n c u r r e n t ( a ) f i g u r e 7 . t r a n s c o n d u c t a n c e v a r i a t i o n w i t h d r a i n c u r r e n t - i d s , d r a i n - s o u r c e c u r r e n t ( a ) f i g u r e 8 . b o d y d i o d e f o r w a r d v o l t a g e v a r i a t i o n w i t h s o u r c e c u r r e n t - v s d , b o d y d i o d e f o r w a r d v o l t a g e ( v ) t j , j u n c t i o n t e m p e r a t u r e ( c ) t j , j u n c t i o n t e m p e r a t u r e ( c ) 7 1 . 0 9 1 . 0 6 1 . 0 3 1 . 0 0 0 . 9 4 0 . 9 7 0 . 9 1 - 5 0 - 2 5 0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0 v d s = v g s i d = - 2 5 0 u a - 5 0 - 2 5 0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0 1 . 1 5 1 . 1 0 1 . 0 5 1 . 0 0 0 . 9 5 0 . 9 0 0 . 8 5 i d = - 2 5 0 u a 1 5 1 2 0 3 6 9 0 5 1 0 1 5 2 0 v d s = - 1 5 v 2 0 . 0 1 0 . 0 1 . 0 0 . 4 0 . 6 0 . 7 0 . 9 1 . 1 1 . 3 v g s = 0 v s d m 8 9 5 8 p - c h a n n e l
8 n - c h a n n e l q g , t o t a l g a t e c h a r g e ( n c ) f i g u r e 9 . g a t e c h a r g e f i g u r e 1 0 . m a x i m u m s a f e o p e r a t i n g a r e a p - c h a n n e l v d s , d r a i n - s o u r c e v o l t a g e ( v ) f i g u r e 9 . g a t e c h a r g e q g , t o t a l g a t e c h a r g e ( n c ) v g s , g a t e t o s o u r c e v o l t a g e ( v ) 1 0 8 6 4 2 0 0 3 6 9 1 2 1 5 1 8 2 1 2 4 v d s = - 1 5 v i d = - 4 . 5 a v g s , g a t e t o s o u r c e v o l t a g e ( v ) i d , d r a i n c u r r e n t ( a ) 1 0 8 6 4 2 0 0 2 4 6 8 1 0 1 2 1 4 1 6 v d s = 1 5 v i d = 9 a 4 0 1 0 1 1 0 . 1 0 . 0 3 0 . 1 1 1 0 3 0 5 0 r d s ( o n ) l i m i t 1 0 m s 1 0 0 m s 1 s d c v g s = 1 0 v s i n g l e p u l s e t a = 2 5 c f i g u r e 1 0 . m a x i m u m s a f e o p e r a t i n g a r e a - v d s , d r a i n - s o u r c e v o l t a g e ( v ) - i d , d r a i n c u r r e n t ( a ) 5 0 1 0 1 0 . 1 0 . 0 3 0 . 1 1 1 0 3 0 5 0 v g s = - 1 0 v s i n g l e p u l s e t a = 2 5 c r d s ( o n ) l i m i t 1 0 m s 1 0 0 m s 1 s d c s d m 8 9 5 8
f i g u r e 1 1 . s w i t c h i n g t e s t c i r c u i t f i g u r e 1 2 . s w i t c h i n g w a v e f o r m s t v v t t d ( o n ) o u t i n o n r 1 0 % t d ( o f f ) 9 0 % 1 0 % 1 0 % 5 0 % 5 0 % 9 0 % t o f f t f 9 0 % p u l s e w i d t h t r a n s i e n t t h e r m a l i m p e d a n c e 2 1 0 . 1 0 . 0 1 s q u a r e w a v e p u l s e d u r a t i o n ( s e c ) f i g u r e 1 3 . n o r m a l i z e d t h e r m a l t r a n s i e n t i m p e d a n c e c u r v e r ( t ) , n o r m a l i z e d e f f e c t i v e 9 i n v e r t e d d u t y c y c l e = 0 . 5 0 . 2 0 . 1 0 . 0 5 0 . 0 2 s i n g l e p u l s e 1 0 - 4 1 0 - 3 1 0 - 2 1 0 - 1 1 1 0 1 0 0 p d m t 1 t 2 1 . r c j a ( t ) = r ( t ) * r c j a 2 . r c j a = s e e d a t a s h e e t 3 . t j m - t a = p d m * r c j a ( t ) 4 . d u t y c y c l e , d = t 1 / t 2 v d d r d v v r s v g g s i n g e n o u t l s d m 8 9 5 8
|
