![]() |
|
If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
Datasheet File OCR Text: |
UM10758 tea1836db1094 tea1836xt + tea1792t 65 w notebook adapter rev. 1 ? 4 december 2013 user manual document information info content key w ords tea18 36db10 9 4 , tea18 36xt , very l o w st an dby pow er co nsumption, high p eak powe r , active x-cap discha r ge, b u rst mode o peratio n, flyback co nverter , 6 5 w , no te book ad apter, co n t ro ller, co nverter , po wer suppl y, demo boa rd ab stra ct the t ea18 36xt i s a hi gh-featured lo w-cost dcm/qr flyback conv erter co ntrolle r . it provide s h i gh ef ficie n cy a t all p o wer leve ls i n clud ing very low no-lo ad pow er co nsumption at nomin al outpu t volt age i n burst mod e opera t i on. t o mi nimize the risk of a udib le no ise, b u rst mode opera t io n is inclu ded for th e low lo ad ran ge. switching in the au dibl e fre que ncy ra nge i s l imited an d peak curren t s are low . the t ea1836 xt is i n te nde d for powe r sup p lie s up to 75 w with extra hi gh peak po wer ca p abi lities to enab le supp lying h igh pe ak p o wer eq uipmen t without requ iring a pf c. thi s d o cument describ es the 6 5 w noteb ook ada pter dem o bo ard with th e tea18 36xt an d tea17 92t s. th e dem o bo ard provide s a n output of 19. 5 v /3 .3 4 a . the average efficiency is above 91 % and the no-load power consumption is below 30 mw. http://
um1 0758 al l info r m atio n pr ov ide d in thi s d o cu ment is su bje c t t o le gal dis c l a i m er s. ? nx p b . v . 201 3 . al l r i ght s r e se r v ed. user manual rev. 1 ? 4 december 2013 2 of 28 cont act information for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com nxp semiconductors UM10758 tea1836db1094 tea1836 + tea1792 65 w notebook adapter rev i si on hi st ory rev date des c ription v.1 20131204 first issue um1 0758 al l info r m atio n pr ov ide d in thi s d o cu ment is su bje c t t o le gal dis c l a i m er s. ? nx p b . v . 201 3 . al l r i ght s r e se r v ed. user manual rev. 1 ? 4 december 2013 3 of 28 nxp semiconductors UM10758 tea1836db1094 tea1836 + tea1792 65 w notebook adapter 1. introduction 1.1 scope of this document th is docum ent d e scr i be s th e 65 w n o tebo ok ad ap te r tea1 836 db1 09 4 de mo b oa r d using th e t ea1 83 6 1 t an d t ea1 79 2 t s. it co nt a i n s a se t of m e as ur em e n t s t h a t sh ow s the m a in charac terist ics. 1.2 tea1836xt th e tea18 36xt is a co ntro ller ic fo r low-co st switched m ode po we r sup p lie s (sm p s) in te nde d for flyback top o lo gies. the b u ilt-in g r e en function s pr ovide high e f ficien cy at all power lev e ls . at h i gh p o wer le ve ls the flyba c k ope ra te s in qr mo de. when lo weri ng the po wer le ve ls, the con t r o lle r switche s to dcm o r fr equ ency re duction ( f r) mo de. the p e a k cur r en t is r edu ced to 25 % of th e maximu m pea k cur r e n t. at low power lev e ls, when the flyback sw it chin g fr eq uen cy re ache s 25 khz, the flyback con v e r ter switch es to b u r s t mod e . t o e n sur e high ef ficien cy at low p o wer and e x ce llent no - l oa d po we r pe rf or ma n c e , a b ur s t m od e h a s b e e n integr ated th at r e d u ces th e optocurrent to a minimu m lev e l. as the s witc h ing frequen cy in th is mo de h a s a m i nimu m valu e of 2 5 khz wh ile the bu rst fr equ en cy is a l wa ys be low 8 0 0 h z, the fre que ncies ar e o u t s ide the a udib l e ra ng e. dur i ng the n o n - switchin g ph ase of th e bur st mo de, th e inter n a l ic su pply cu rr en t is r edu ced to fu rthe r op tim i ze ef ficien cy . v a lley s witc h ing is used in all operating modes. th e tea18 36xt in clu des an ove r po we r pro t e c tio n (opp) . th e opp en able s the con t r o lle r to delive r 150 % p eak powe r fo r a lim ite d amo unt of time ( 2 0 0 ms) in case of o v e r p o wer situa t ions. if the ou tp ut is shor ted, the ou tp ut po we r is lim ite d to 1 0 0 % to ke ep th e av er ag e po we r co ns um p tio n lo we r th an 5 w . the tea1836xt is realized in a high-volt ag e soi (silicon-on-insulator) process . this p r oce s s co mbin es th e adva n t a g e s o f a lo w- volt ag e pr ocess, like accur a cy , hi gh- spee d protec tion functions, and c ontrol, while maint a ining the high-v olt a ge c a p a bilities like h i gh- volt ag e st art- up an d integ r a t e d x-cap d i sch a r ge. th e tea18 36xt e nab les lo w-cost, hig h ly ef ficien t a nd r e liab l e supp lies fo r po we r r equ ire m en t s u p to 7 5 w to be d e sign ed e a sily an d with a m i nimu m num ber of e x te rn al comp on ent s. w arning le tha l vo lt ag e a n d fire i gni tio n ha za rd the n on-in su lated hi gh volt age s tha t are prese n t wh en ope rati ng this produ ct, co nstitu te a ri sk of ele c tric shock, p e rsona l i n jury , d eath and /o r ig nition o f fire. this product is intended for evaluation purposes only. it shall be operated in a designated test area by personnel qualified according to local requirements and labor laws to work with non-insulated mains voltages and high-voltage ci rcuits. this product shall never be operated unattended. um1 0758 al l info r m atio n pr ov ide d in thi s d o cu ment is su bje c t t o le gal dis c l a i m er s. ? nx p b . v . 201 3 . al l r i ght s r e se r v ed. user manual rev. 1 ? 4 december 2013 4 of 28 nxp semiconductors UM10758 tea1836db1094 tea1836 + tea1792 65 w notebook adapter 1.3 tea1792ts th e tea17 92t s is a memb er o f the gen era t i on of syn c h r o nou s rectifie r ( s r) co ntro ller ics for switche d mod e power su pplie s. it s high le vel of in te gr ation en able s the d e sign of a cost-e f f ective power su pply with a ve ry lo w n u mb er o f exter nal comp on ent s. th e tea17 92t s is a co ntro ller ic d e d i ca te d to synchr on ou s re ctification o n th e secon dar y sid e of d i sco n tinuo us co ndu ctio n mod e and qua si- r e s ona nt flyba c k co nver ters 1.4 setup of the 65 w notebook adapter th e bo ard is de sig n e d fo r un ive r sal ma ins (9 0 v (ac ) t o 264 v (ac)). when a dc input volt a ge is app lied, the po we r con s u m ption is hi g her due to con t in uo us a c tivation o f the x- ca p a cito r dischar ge fun c tio n . th e de mo bo ar d incor por ates two sub c ir cuit s: ? a d c m /q r ty pe f l yba c k co nv er te r ? a sy nc hronous rectifier (s r) the purpose of the demo board is to sh ow the operation of the tea1836xt and tea1792ts in a single output supply. the performance is according today's general standards including the doe + coc efficiency requirements. it can be used as a starting point for further product development. 2. safety warning the board must be connected to the mains vo ltage. touching the board during operation must be avoided at all times. an isolated housing is obligatory when used in uncontrolled, non-laboratory environments. a galvanic isol ation of the mains phase using a variable transformer is always recommended. figure 1 sho w s the symbo ls by wh ich th ese d e vice s ca n be r e c o g n iz ed . a . iso l ated b. not i s olated fig 1. v ariab le tra n sfo rme r (v ar iac ) iso l a t io n sym bo ls 019aab173 019aab174 um1 0758 al l info r m atio n pr ov ide d in thi s d o cu ment is su bje c t t o le gal dis c l a i m er s. ? nx p b . v . 201 3 . al l r i ght s r e se r v ed. user manual rev. 1 ? 4 december 2013 5 of 28 nxp semiconductors UM10758 tea1836db1094 tea1836 + tea1792 65 w notebook adapter 3. boa rd photogr aphs a. t o p b. bo tt om fig 2. tea1 836 xt an d tea1 792t s demo bo ard 6 5 w no tebo o k a d a p ter um1 0758 al l info r m atio n pr ov ide d in thi s d o cu ment is su bje c t t o le gal dis c l a i m er s. ? nx p b . v . 201 3 . al l r i ght s r e se r v ed. user manual rev. 1 ? 4 december 2013 6 of 28 nxp semiconductors UM10758 tea1836db1094 tea1836 + tea1792 65 w notebook adapter 4. s p ecifications 5. measurement s 5.1 t est facilities ? os cilloscope: y o kogawa d l 9140l ? ac power source: agilent 6812b ? electro n ic load : agile nt 606 3b ? digit al power meter: yo k o g a w a w t 2 1 0 5.2 efficiency ef ficiency measurement s are performed at s t abilized conditi ons. the outpu t volt age and o u tput cu rr en t is m easu r ed dire ctly at th e p c b c o n n e c t o r . m e asu r em e n t s ar e do n e fo r 115v/60hz and 230v/50hz. table 3 sh ows the a v e r a ge valu e of 1 0 bo ar ds. t a ble 1. inp u t spe c ifica t io n symbol description conditions va l u e v i in put vo lt a g e 9 0 v to 26 4 v f i in put frequ ency 4 7 h z to 6 4 hz p i(n o lo ad ) no -l oad in put powe r at 23 0 v /50 h z < 30 mw table 2. output sepcification symbol description condition va l u e v o o u tp ut vo lt a g e 19.5 v i o o u tp ut cu rre n t 0 a to 3.33 a i o( pe ak) p eak output current fo r 20 0 m s at v i =9 0v a t 6 0 h z 5 a t ho ld hold t i me at 1 1 5 v/60 h z; full load > 1 0 ms - l ine regu lation 1 % - l oad regu latio n 1 % t st ar tup st art- up t i m e at 1 1 5 v /60 h z ? 1s ? e f fici ency d oe: > 88.5 % at cab l e en d (i nclud i ng 0.5 % margin ); coc : > 8 9 . 5 % at ca ble en d (inclu ding 0 . 5 % margin ) ? 90 % - e le ctroma gentic interference (emi) cispr22 compli ant p a ss table 3. efficiency results condition energy star 2.0 efficiency requirement (%) average 100 % load 75 % load 50 % load 25 % loa d 1 1 5 v /6 0 hz > 87 91.3 9 1.0 9 1 . 6 91.6 9 1 . 0 2 3 0 v /50 h z > 87 91.4 9 2.2 9 1 . 7 91.3 90.5 um1 0758 al l info r m atio n pr ov ide d in thi s d o cu ment is su bje c t t o le gal dis c l a i m er s. ? nx p b . v . 201 3 . al l r i ght s r e se r v ed. user manual rev. 1 ? 4 december 2013 7 of 28 nxp semiconductors UM10758 tea1836db1094 tea1836 + tea1792 65 w notebook adapter 5.3 s t andby power consumption powe r co nsum ption pe rfor ma nce of th e to t a l ap plication b oar d with o u t loa d conn ecte d wa s m e as ur ed w i th a y o ko g a w a w t 2 1 0 dig i t a l po we r me te r . in te gr at ion t i me w a s se t t o 5 m in utes to m easu r e the a v e r a ge d i ssip ated p o wer . measurements were performed for 115 v/60 hz, 230 v/50 hz, and 264 v/50 hz. ta b l e 4 sho w s th e aver ag e va lue o f 10 b o a r d s . 5.4 current for ch anging b e tween normal and burst mode operation 5.5 load regulation th e ou tp ut vo lt age ver sus lo ad cur r e n t wa s me asur ed a t the pcb con n e c tor . t a ble 4. s t an db y po we r con su mption : n o -load condition energy star 2.0 requirement (mw) no-l oa d po we r co ns u m p t io n (mw) 1 1 5v / 6 0h z ? 300 2 1 23 0 v /5 0 h z ? 300 24 26 4 v /5 0 h z ? 300 27 table 5. current for changing between normal and burst mode operation condition 115v/60hz 2 3 0v / 5 0h z from no rma l mo de t o b u rs t mo de o p e r ati o n current (a) 0 .630 0.725 po wer (w) 12.3 1 4.1 from bu rs t mo de t o n o rma l mo de o p e r ati o n current (a) 0 .425 0.460 power (w) 8 .3 9.0 um1 0758 al l info r m atio n pr ov ide d in thi s d o cu ment is su bje c t t o le gal dis c l a i m er s. ? nx p b . v . 201 3 . al l r i ght s r e se r v ed. user manual rev. 1 ? 4 december 2013 8 of 28 nxp semiconductors UM10758 tea1836db1094 tea1836 + tea1792 65 w notebook adapter 5.6 line regulation th e ou tp ut vo lt age ver s us m a ins inp u t vo lt age wa s me asur ed dir e ct ly at the ou tp ut con nector for nom inal lo ad cond ition ( 3 .34 a ) . the value s r e main with in th e t a r get of 19.5 v ? 1% . 5.7 output volt age regul ation in st andby mode th e ou tp ut volt a g e r e g u lation d u r i ng n o load o per ation wa s me asur ed for 9 0 v/6 0 hz an d 2 6 4v / 5 0h z . (1 ) v o =1 1 5 v (2 ) v o = 230 v fi g 3. ou tpu t v o l t age a s a fu nc tio n of ou tpu t c u r ren t , r $ d d d 9 r 9 fig 4. ou tpu t v o lt age a s fu nc tio n of the m ain s vo lt ag e 9 l p d l q v 9 $ & |