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MDS746 MAX3640 ON0640 TMP86 KBJ4007 2SJ525 AN1060 MX7224CQ
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  2 0 1 2 / 0 8 / 0 9 v 1 p a g e 1 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h d e s c r i p t i o n a p p l i c a t i o n s t h e s p 6 8 5 2 i s a l o w c o s t , l o w s t a r t u p c u r r e n t , c u r r e n t m o d e p w m c o n t r o l l e r w i t h g r e e n - m o d e p o w e r - s a v i n g o p e r a t i o n . b u i l t - i n 7 0 0 v m o s f e t p r o v i d e s s i m p l e d e s i g n f o r a d a p t e r . t h e i n t e g r a t e d f u n c t i o n s i n c l u d e t h e l e a d i n g - e d g e b l a n k i n g o f t h e c u r r e n t s e n s i n g , i n t e r n a l s l o p e c o m p e n s a t i o n . i t w o u l d p r o v i d e t h e u s e r s a s u p e r i o r a c / d c p o w e r a p p l i c a t i o n o f h i g h e r e f f i c i e n c y , l o w e x t e r n a l c o m p o n e n t c o u n t s , a n d l o w e r c o s t s o l u t i o n f o r a p p l i c a t i o n s . t h e s p 6 8 5 2 f e a t u r e s m o r e p r o t e c t i o n s o r f u n c t i o n s f o r t h e f o l l o w i n g c h a r a c t e r i s t i c s : a d d o l p ( o v e r l o a d p r o t e c t i o n ) f u n c t i o n t o p r o v i d e b e t t e r p r o t e c t i o n p e r f o r m a n c e f o r f a u l t c o n d i t i o n s l i k e s h o r t c i r c u i t o r o v e r l o a d . m o d i f y t h e o v p ( o v e r v o l t a g e p r o t e c t i o n ) m e c h a n i s m f r o m t h e c y c l e - b y - c y c l e m o d e t o t h e h i c c u p m o d e . s p 6 8 5 2 i s a v a i l a b l e i n d i p - 8 p p a c k a g e .  a c / d c s w i t c h i n g p o w e r a d a p t o r  b a t t e r y c h a r g e r  p c 5 v s t a n d b y p o w e r .  o p e n - f r a m e s w i t c h i n g p o w e r s u p p l y f e a t u r e s p i n c o n f i g u r a t i o n d i p - 8 p p a r t m a r k i n g d i p - 8 p  h i g h - v o l t a g e b i c m o s p r o c e s s  v e r y l o w s t a r t u p c u r r e n t ( < 2 0 a )  u n d e r v o l t a g e l o c k o u t ( u v l o )  c u r r e n t m o d e c o n t r o l  n o n - a u d i b l e - n o i s e g r e e n m o d e c o n t r o l  c u r r e n t l i m i t i n g  o l p ( o v e r l o a d p r o t e c t i o n )  o v p ( o v e r v o l t a g e p r o t e c t i o n ) o n v c c p i n  l e a d i n g - e d g e b l a n k i n g  p r o g r a m m a b l e s w i t c h i n g f r e q u e n c y  i n t e r n a l s l o p e c o m p e n s a t i o n  g r e e n - m o d e c o n t r o l f o r p o w e r s a v i n g  b u i l d i n g i n 6 5 0 v m o s f e t http://
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 2 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h t y p i c a l a p p l c a t i o n c i r c u i t t y p i c a l a p p l c a t i o n c i r c u i t f o r h i g h e f f i c i e n c y s m p s
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 3 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h p i n d e s c r i p t i o n p i n s y m b o l description 1 source power mosfet source 2 c s c u r r e n t s e n s e . t h i s p i n s e n s e s t h e v o l t a g e a c r o s s a r e s i s t o r , t o c o n t r o l p w m o u t p u t . t h i s p i n a l s o p r o v i d e s c u r r e n t a m p l i t u d e i n f o r m a t i o n f o r c u r r e n t - m o d e c o n t r o l . 3 gnd ground 4 rt this current is used to charge an internal cap acitor, to determine the switching frequency. 5 comp voltage feedback. the pin provides the output volta ge regulation signal, it provides feedback to the internal pwm comparator, so that the pwm com parator can control the duty cycle. 6 vcc supply voltage in 7 drain power mosfet drain 8 drain power mosfet drain b l o c k d i a g r a m
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 4 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h o r d e r i n g i n f o r m a t i o n part number package part marking SP6852d8tg dip-8p SP6852i s p 6 8 5 2 d 8 t g : t u b e ; p b C f r e e a b s o u l t e m a x i m u m r a t i n g s ( t a = 2 5 , u n l e s s o t h e r w i s e s p e c i f i e d . ) t h e f o l l o w i n g r a t i n g s d e s i g n a t e p e r s i s t e n t l i m i t s b e y o n d w h i c h d a m a g e t o t h e d e v i c e m a y o c c u r . s y m b o l p a r a m e t e r v a l u e u n i t v c c d c s u p p l y v o l t a g e 3 6 v v comp / rt / cs c o m p / r t / c s v o l t a g e - 0 . 3 ~ 7 . 0 v v d s m o s f e t b r e a k d o w n v o l t a g e 7 0 0 v p d p o w e r d i s s i p a t i o n @ t a = 8 5 ( * ) 0 . 3 w h u m a n b o d y m o d e l 4 kv e s d m a c h i n e m o d e l 3 0 0 v e a s s i n g l e p u l s e a v a l a n c h e e n e r g y 4 9 mj t o p e o p e r a t i n g a m b i e n t t e m p e r a t u r e - 4 0 ~ 8 5 t j o p e r a t i n g j u n c t i o n t e m p e r a t u r e r a n g e - 4 0 ~ 1 5 0 t s t g s t o r a g e t e m p e r a t u r e r a n g e - 4 0 ~ 1 5 0 r ? j c 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 C c a s e ( * ) 9 5 / w ( * ) t h e p o w e r d i s s i p a t i o n a n d t h e r m a l r e s i s t a n c e a r e e v a l u a t e d u n d e r c o p p e r b o a r d m o u n t e d w i t h f r e e a i r c o n d i t i o n s .
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 5 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h 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 , v cc = 1 5 v , u n l e s s o t h e r w i s e s p e c i f i e d . ) s y m b o l p a r a m e t e r c o n d i t i o n s m i n . typ. max. unit supply voltage ( vcc pin ) i s t t s t a r t u p c u r r e n t 1 0 2 0 u a v c o m p = 0 v 2 . 7 4 m a v c o m p = 3 v 2 . 4 m a i o p o p e r a t i n g c u r r e n t protection tripped ( o l p, o vp) 1 . 0 m a uvlo (off) m i n . o p e r a t i n g v o l t a g e 9 . 0 1 0 . 0 1 1 . 0 v uvlo (on ) s t a r t t h r e s h o l d v o l t a g e 1 5 . 0 16.0 17.0 v ovp level o v e r v o l t a g e p r o t e c t i o n 2 6 2 7 2 9 . 5 v voltage feedback ( comp pin ) i s c s h o r t c i r c u i t c u r r e n t 1 . 2 5 2 . 2 m a v o p o p e n l o o p v o l t a g e 6 v v t h ( g m ) g r e e n m o d e t h r e s h o l d v c o m p 2 . 3 5 v oscillator ( rt pin ) f osc frequency r t =100k ? 60.0 68.0 70.0 khz f o s c ( g m ) g r e e n m o d e f r e q u e n c y f s = 6 5 . 0 k h z 2 2 k h z fdt frequency variation versus temp. deviation ( - 4 0 c ~ 1 0 5 c ) 3 % f d v f r e q u e n c y v a r i a t i o n v e r s u s v c c d e v i a t i o n ( v c c = 1 1 v - 2 2 v ) 1 % current sensing ( cs pin ) v c s ( o f f ) m a x i m u m i n p u t v o l t a g e 0 . 8 0 . 8 5 0 . 9 v t l e d d l e a d i n g e d g e b l a n k i n g t i m e 2 8 0 n s z c s i n p u t i m p e d a n c e 1 m t p d d e l a y t o o u t p u t 1 0 0 n s mosfet d c ( m a x ) m a x i m u m d u t y c y c l e 7 0 7 5 8 0 % d c ( m i n ) m i n i m u m d u t y c y c l e 0 % v dss drain-source breakdown voltage v gs =0v, i d= 250ua 7 0 0 v i dss drain-source leakage current v g s = 0 v , v d s = 6 0 0 v 1 0 u a r ds(on) on-state resistance v gs =10v, i d= 0.6a 8 v s d f o r w a r d o n v o l t a g e v g s = 0 v , i s = 1 . 4 a 1 . 5 v co output capacitance v g s = 0 v , v d s = 2 5 v , f = 1 . 0 m h z 2 7 p f t r r i s i n g t i m e 5 0 2 0 0 n s t f f a l l i n g t i m e 3 0 1 2 0 n s olp ( over load protection ) t l o l p o l p t r i p l e v e l 5 . 0 v t d o l p o l p d e l a y t i m e ( n o t e ) 6 0 m s n o t e : t h e o l p d e l a y t i m e i s p r o p o r t i o n a l t o t h e p e r i o d o f s w i t c h i n g c y c l e . s o t h a t , t h e l o w e r r t v a l u e w i l l s e t t h e h i g h e r s w i t c h i n g f r e q u e n c y a n d t h e s h o r t e r o l p d e l a y t i m e .
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 6 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h p e r f o r m a n c e c h a r a c t e r i s t i c s ( t a = 2 5 , u n l e s s o t h e r w i s e s p e c i f i e d . )
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 7 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h p e r f o r m a n c e c h a r a c t e r i s t i c s ( t a = 2 5 , u n l e s s o t h e r w i s e s p e c i f i e d . )
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 8 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h p e r f o r m a n c e c h a r a c t e r i s t i c s ( t a = 2 5 , u n l e s s o t h e r w i s e s p e c i f i e d . ) m a x d u t y c y c l e m i n d u t y c y c l e m a x d u t y c y c l e m i n d u t y c y c l e m a x d u t y c y c l e m i n d u t y c y c l e
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 9 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h p e r f o r m a n c e c h a r a c t e r i s t i c s ( t a = 2 5 , u n l e s s o t h e r w i s e s p e c i f i e d . ) r i s i n g t i m e l o a d f a l l i n g t i m e l o a d r i s i n g t i m e l o a d f a l l i n g t i m e l o a d r i s i n g t i m e l o a d f a l l i n g t i m e l o a d
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 1 0 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h p e r f o r m a n c e c h a r a c t e r i s t i c s ( t a = 2 5 , u n l e s s o t h e r w i s e s p e c i f i e d . ) l e a d i n g e d g e b l a n k i n g t i m e o l p d e l a y t i m e l e a d i n g e d g e b l a n k i n g t i m e o l p d e l a y t i m e l e a d i n g e d g e b l a n k i n g t i m e o l p d e l a y t i m e
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 1 1 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h dip- 8p package outline
2 0 1 2 / 0 8 / 0 9 v 1 p a g e 1 2 s p 6 8 5 2 g r e e n - m o d e p o w e r s w i t c h i n f o r m a t i o n p r o v i d e d i s a l l e g e d t o b e e x a c t a n d c o n s i s t e n t . s y n c p o w e r c o r p o r a t i o n p r e s u m e s n o r e s p o n s i b i l i t y f o r t h e p e n a l t i e s o f u s e o f s u c h i n f o r m a t i o n o r f o r a n y v i o l a t i o n o f p a t e n t s o r o t h e r r i g h t s o f t h i r d p a r t i e s t h a t m a y r e s u l t f r o m i t s u s e . n o l i c e n s e i s g r a n t e d b y a l l e g a t i o n o r o t h e r w i s e u n d e r a n y p a t e n t o r p a t e n t r i g h t s o f s y n c p o w e r c o r p o r a t i o n . c o n d i t i o n s m e n t i o n e d i n t h i s p u b l i c a t i o n a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e . t h i s p u b l i c a t i o n s u r p a s s e s a n d r e p l a c e s a l l i n f o r m a t i o n p r e v i o u s l y s u p p l i e d . s y n c p o w e r c o r p o r a t i o n p r o d u c t s a r e n o t a u t h o r i z e d f o r u s e a s c r i t i c a l c o m p o n e n t s i n l i f e s u p p o r t d e v i c e s o r s y s t e m s w i t h o u t e x p r e s s w r i t t e n a p p r o v a l o f s y n c p o w e r c o r p o r a t i o n . ? t h e s y n c p o w e r l o g o i s a r e g i s t e r e d t r a d e m a r k o f s y n c p o w e r c o r p o r a t i o n ? 2 0 0 4 s y n c p o w e r c o r p o r a t i o n C p r i n t e d i n t a i w a n C a l l r i g h t s r e s e r v e d s y n c p o w e r c o r p o r a t i o n 7 f - 2 , n o . 3 - 1 , p a r k s t r e e t n a n k a n g d i s t r i c t ( n k s p ) , t a i p e i , t a i w a n , 1 1 5 , r . o . c p h o n e : 8 8 6 - 2 - 2 6 5 5 - 8 1 7 8 f a x : 8 8 6 - 2 - 2 6 5 5 - 8 4 6 8 h t t p : / / w w w . s y n c p o w e r . c o m


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