preliminary product brief CHL8314 digital multi - p hase buck controller trademarks and registered trademarks are the property of the respective owners. pb 0004 rev. 0.30, october 7, 2008 page 1 one highwood drive, tewksbury, ma 01876 tel: +1( 978 ) - 640 - 0011 www.chilsemi.com ? 200 8 chil semiconductor inc. all rights reserved features intel vr11 . x c ompliant d igital pwm controller programmable 1 - phase to 4 - phase operation configurable s witching frequency from 200 khz to 1mhz per phase with accuracy better than 5% customized digital over - clocking features o easy - to - use smbus game r command o gamer vid control up to 2.3v , gamer vmax, vid override or track, digital load - line adjust, gamer oc/ovp, gamer off pin , gamer otp chil efficiency shaping features o variable gate drive o dynamic phase control 1 - phase or 2 - phase psi for light loads a daptive transient algorithm minimizes o utput b ulk capacitors enables thermal phase balancing smbus fault indicators : ovp, uvp, ocp, otp smbus interface fo r configuring and monitoring ; smbus commands inclu de monitoring input current and power c ompatible wit h chil a tl drivers and tri - state drivers nine bytes of nvm storage available for customer use +3.3v s upply voltage; 0 oc to 85oc o peration rohs compliant, msl level 1 package figure 1 . CHL8314 48 pin qfn package description t he chl 8314 is a 4 - phase digital multi - phase synchronous buck controller for core regulation of high - performance intel ? vr11.1 and vr11.0 platforms . the chl 8314 is fully compliant with vr11.1 including power status indicator (psi) and for improved light loa d efficiency and accurate current output (imon). the chil chl 8314 includes a customized set of digital over - clocking features which require no external components. gaming applications can use the smbus interface to place the vrd into gamer mode. gamer m ode features include extended gamer vid up to 2.3v with 6.25 mv resolution, gamer vmax, cpu vid override or track, digital load - line adjust, gamer oc/ovp and gamer off pin. the chl 8314 deploys a number of efficiency shaping features. the chl 8314 can be c onfigured to optimize mosfet gate drive versus load current, psi can be programmed to be one - phase or two - phases for optimum light - load efficiency , and the controller can autonomously add/drop phases in low - current and mid - current region s to deliver 90+% e fficienc y across the entire load range . chil s unique adaptive transient algorithm , based on non - linear digital pwm algorithms , minimizes output bulk capacitors. chl 8314 supports ntc temperature sense to report temperature and trigger vr hot and otp fau lts. digital thermal balancing allows proportional current imbalance between phases. the chl 8314 provides extensive ovp, uvp, ocp and otp f ault p rotection . device and fault configuration parameters are easily defined using the chil intuitive power designe r (ipd) gui and stored in on - chip non - volatile memory (nvm). the 3 - pin smbus interface can be used to monitor a variety of operating parameters on up to seven chl 8314 based vrs. the controller includes a unique sensorless and lossless input current monit oring capability . the chil chl 8314 truly simplifies vrd design and enables fastest time - to - market with its set - and - forget methodology. applications intel? vr11.x cpu vrd and vrm ; ddr memory high performance desktops , servers and graphics cards over - cl ocking and high - efficiency applicatio s d a n c n c e n v r t n r c s m p s i # n c i s e n 4 i s e n 3 n c v i d 0 v i d 1 v i d 2 v i d 3 v i d 4 v i d 5 v i d 6 v i d 7 v c p u v c c s c l p w m 4 i m o n v r _ r e a d y i r t n 3 i r t n 4 n c n c r c s p t s e n v r _ h o t p w m 3 v i n s e n s a l e r t # v 1 8 a r r e s n c v c c 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 4 8 4 7 4 6 4 5 2 4 2 5 2 6 2 7 2 8 1 7 1 8 1 9 2 0 2 1 2 2 2 3 4 0 3 9 3 8 3 7 3 6 3 5 4 1 4 2 i s e n 2 i s e n 1 i r t n 1 i r t n 2 p w m 2 p w m 1 v a r _ g a t e 1 5 1 6 4 4 4 3 v c c 3 3 3 2 3 1 3 0 2 9 3 4 g n d s a d d r / g a m e r _ o f f c h i l c h l 8 3 1 4 t o p v i e w 4 8 p i n 7 m m x 7 m m q f n
preliminary product brief CHL8314 di gital multi - phase buck controller page 2 pb 0004 rev. 0.30 , october 7, 2008 functional block diagram figure 2 . functional block diagram d i g i t a l p r o c e s s o r c h a n n e l c u r r e n t s e n s e i s e n 1 i r t n 1 m o n i t o r a d c v i n s e n v i d d e c o d e a n d d a c v i d 0 v i d 1 v i d 2 v i d 3 v i d 5 v i d 4 v i d 7 v i d 6 v c p u v r t n v o l t a g e e r r o r a d c c u r r e n t b a l a n c e p i d + c o n t r o l l e r t r a n s i e n t c o n t r o l l e r p w m g e n e r a t o r p w m 1 s m b u s i n t e r f a c e s c l s d a o s c i l l a t o r , n v m s t a t e c o n t r o l , a n d m o n i t o r i n g r e f e r e n c e e n l d o 3 . 3 v 1 . 8 v g n d v r e f c u r r e n t m o n i t o r i m o n p s i v 1 8 a r r e s o v p o v p r c s p r c s m v a r _ g a t e t s e n s a l e r t v r h o t v r _ r e a d y p w m 2 p w m 3 p w m 4 s a d d r / g a m e r _ o f f i s e n 2 i r t n 2 i s e n 3 i r t n 3 i s e n 4 i r t n 4
preliminary product brief CHL8314 di gital multi - phase buck controller page 3 pb 0004 rev. 0.30 , october 7, 2008 typical application s block diagram figure 3 . 4 - phase vrd using CHL8314 controller and chl8 510 mosfet drivers + 3 . 3 v v _ c p u 3 2 8 3 6 4 5 7 8 1 6 1 1 2 5 c h l 8 3 1 4 1 2 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 9 3 0 3 1 3 2 3 3 v i n s e n p w m 4 p w m 3 p w m 2 p w m 1 v i d 5 v i d 6 v i d 1 v i d 3 v i d 4 v i d 2 v i d 0 v i d 7 i m o n v r _ r e a d y v c p u p s i # v c c r r e s e n v 1 8 a v r t n f r o m c p u i r t n 3 i s e n 4 2 1 4 7 i r t n 1 r c s p i r t n 2 r c s m i s e n 3 i s e n 2 i s e n 1 i r t n 4 + 1 2 v v v v v v v v v v f r o m s y s t e m l o a d v v r t n r _ i m o n c _ i m o n r c s c c s r s e r i e s r s e r i e s r t h r v i n _ 1 r v i n _ 2 4 5 4 6 4 3 4 4 4 1 4 2 2 6 v r _ h o t t s e n r t h 2 6 s a d d r / g a m e r _ o f f 1 3 s a l e r t # + 3 . 3 v 1 4 1 5 s c l s d a s m b u s v v 1 0 g n d 2 9 , 3 4 , 3 5 , 3 7 , 3 8 , 3 9 , 4 0 n c 4 8 h v c c l o g a t e h i g a t e v c c g n d p w m l v c c 1 2 v v b o o t s w i t c h v v _ v g d c h l 8 5 1 0 h v c c l o g a t e h i g a t e v c c g n d p w m l v c c 1 2 v v b o o t s w i t c h v v _ v g d c h l 8 5 1 0 h v c c l o g a t e h i g a t e v c c g n d p w m l v c c 1 2 v v b o o t s w i t c h v v _ v g d c h l 8 5 1 0 h v c c l o g a t e h i g a t e v c c g n d p w m l v c c 1 2 v v b o o t s w i t c h v v _ v g d c h l 8 5 1 0 v h v c c l o g a t e h i g a t e v c c g n d p w m l v c c 1 2 v v b o o t s w i t c h c h l 8 5 1 0 v _ v g d 2 7 v a r _ g a t e t o c p u t o c p u o p t i o n a l v a r i a b l e g a t e d r i v e c i r c u i t
preliminary product brief CHL8314 di gital multi - phase buck controller page 4 pb 0004 rev. 0.30 , october 7, 2008 ordering information chl 8314 ? ? ? package tape & reel qty part number qfn 3000 chl 8314 cr t package information operating temperature range c: comme rcial standard package type r : qfn t: tape & reel
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