VIPer12ADIP / VIPer12AS

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1 VIPer2ADIP / VIPer2AS OFF LINE BATTERY CHARGER ADAPTER TARGET SPECIFICATION TYPE R DS(on) I N V DSS VIPer2ADIP VIPer2AS 30Ω 0.36A 730V n FIXED 50 khz SWITCHING FREQUENCY n 8V TO 40V WIDE RANGE VOLTAGE n CURRENT MODE CONTROL n AUXILIARY UNDERVOLTAGE LOCKOUT WITH HYSTERESIS n HIGH VOLTAGE START UP CURRENT n OVERTEMPERATURE, OVERCURRENT AND OVERVOLTAGE PROTECTION DESCRIPTION The VIPer2A combines a dedicaed curren mode PWM conroller wih a high volage Power MOSFET on he same silicon chip. Typical applicaions cover off line power supplies wih a secondary power capabiliy ranging from less SO8 DIP8 SO-8 ORDER CODES: DIP8 VIPer2ADIP VIPer2AS han W o 5W in wide inpu volage range and 0W in single European volage range or wih a doubler configuraion. The inernal conrol circui offers he following benefis: Large inpu volage range on he V DD pin accommodaes changes in auxiliary supply volage. This feaure is well adaped o baery charger configuraions. Auomaic burs mode in low load condiion. Overvolage proecion in hiccup mode. BLOCK DIAGRAM REGULATOR ON/OFF 50kHz OSCILLATOR INTERNAL SUPPLY OVERTEMP. DETECTOR R R2 S FF R3 PWM LATCH Q R4 8/4 V _ + BLANKING + _ 0.32 V 40 V + _ S R FF Q OVERVOLTAGE LATCH 300 Ω kω January 200 /5

2 THERMAL DATA Symbol Parameer Value Uni Thermal Resisance Juncion-Pins (MAX) for SO8 5 C/W R hj-case Thermal Resisance Juncion-Pins (MAX) for DIP8 5 C/W Thermal Resisance Juncion-Ambien (MAX) for SO8 (See noe ) 65 C/W R jh-amb Thermal Resisance Juncion-Ambien (MAX) for DIP8 (See noe ) 65 C/W Noe : When mouned on a sandard single-sided FR4 board wih 50mm of Cu (a leas 35 µm hick) conneced o all pins. ABSOLUTE MAXIMUM RATING Symbol Parameer Value Uni V DS Coninuous Drain Source Volage (T j = C) V I D Coninuous Drain Curren Inernally limied A V DD Supply Volage V I Feedback Curren 3 ma V ESD Elecrosaic Discharge (R =.5kΩ; C=00pF).5 kv T j Juncion Operaing Temperaure Inernally limied C T c Case Operaing Temperaure -40 o 50 C T sg Sorage Temperaure -55 o 50 C CONNECTION DIAGRAM SO8 DIP8 2/5

3 PIN FUNCTIONS Pin Name V DD Pin Funcion Power supply of he conrol circuis. Also provides a charging curren during sar up hanks o a high volage curren source conneced o he drain. For his purpose, a hyseresis comparaor moniors he V DD volage and provides wo hresholds: -V DDon : Volage value (ypically 4V) a which he device sars swiching and urns off he sar up curren source. -V DDoff : Volage value (ypically 8V) a which he device sops swiching and urns on he sar up curren source. Power MOSFET source and circui ground reference. Power MOSFET drain. Also used by he inernal high volage curren source during sar up phase for charging he exernal V DD capacior. Feedback inpu. The useful volage range exends from 0V o V, and defines he peak drain MOSFET curren. The maximum one, which also corresponds o he curren limiaion, is obained for an pin lef open. CURRENT AND VOLTAGE CONVENTIONS I DD I D V DD I CONTROL V D V VIPer2A ELECTRICAL CHARACTERISTICS (T j =25 C; V DD =6V, unless oherwise specified) POWER SECTION Symbol Parameer Tes Condiions Min Typ Max Uni BV DSS Drain-Source Volage I D =ma; V =2V 730 V I DSS Off Sae Drain Curren V DS =500V; V =2V; T j =25 C 0.5 ma R DSon Saic Drain-Source I D =0.2A On Sae Resisance I D =0.2A; T j =00 C 54 Ω f Fall Time I D =0.A; V IN =300V(See fig.) (See noe ) 300 ns r Rise Time I D =0.2A; V IN =300V(See fig.) (See noe ) 50 ns C oss Drain Capaciance V DS =25V 40 pf Noe : On clamped inducive load 3/5

4 SUPPLY SECTION Symbol Parameer Tes Condiions Min Typ Max Uni I DDch Sar Up Charging Curren VDS=00V (See fig. 2) -0.5 ma I DDoff Sar Up Charging Curren V DD =5V; V DS =00V in Thermal Shudown T j >T SD -T HYST 0 ma I DD0 Operaing Supply Curren No Swiching I =.5mA 3 5 ma I DD Operaing Supply Curren Swiching I =0.5mA 3.5 ma D RST Resar Duy Cycle (See fig. 3) 6 % V V DD Undervolage DDoff Shudown Threshold (See fig. 2 & 3) 8 9 V V DDon V DD Sar Up Threshold (See fig. 2 & 3) 4 6 V V DDhys V DD Threshold Hyseresis (See fig. 2) 5 6 V V V DD Overvolage DDovp Threshold V OSCILLATOR SECTION Symbol Parameer Tes Condiions Min Typ Max Uni F OSC Oscillaor Frequency Toal Variaion V DD =V DD(off)... 36V; T j = C khz PWM COMPARATOR SECTION Symbol Parameer Tes Condiions Min Typ Max Uni G ID I o I D Curren Gain (See fig. 4) 380 I Dlim Peak Curren Limiaion I =0mA (See fig. 4) A I sd I Shudown Curren (See fig. 4) 0.83 ma R Pin Inpu Impedance I D =0mA (See fig. 4).3 kω d Curren Sense Delay o Turn-Off I D =0.2A 200 ns b Blanking Time 500 ns ONmin Minimum On Time 700 ns OVERTEMPERATURE SECTION Symbol Parameer Tes Condiions Min Typ Max Uni T SD Thermal Shudown Temperaure (See fig. 5) C T HYST Thermal Shudown Hyseresis (See fig. 5) 40 C 4/5

5 Figure : Rise and Fall Time I D C << Coss C L D V DS 90% CO NTROL 300V f r VIPer2A 0% Figure 2: Sar Up Curren I DD I DD0 V DDhys V DDoff V DDon V DD I DDch VDS = 00 V F sw = 0 khz Figure 3: Resar Duy Cycle V DD V DDon V DDoff 0µF CONTROL 00V CH ST ST D RST = ST + CH.5V VIPer2A 5/5

6 Figure 4: Peak Drain Curren vs Feedback Curren 400V I D 4mH I Dpeak /F OSC 5V CONTROL 00V I 47nF VIPer2A V I sd R I I Dlim I Dpeak I Dpeak G ID = I I I sd Figure 5: Thermal Shudown T j T SD T HYST V DD V DDon Auomaic sar up 6/5

7 Figure 6: Recangular U-I oupu characerisics for baery charger DCOU T R C2 D T D2 C AC IN F C3 T2 D4 D3 C4 U ISO CONTROL C5 C6 VIPer2 C7 R2 D5 R3 U2 Vcc R4 Vref C0 R5 C8 - + C9 R6 + - R7 R8 T SM0 GND R9 R0 GND Recangular U-I oupu characerisic A complee regulaion scheme can achieve combined and accurae oupu characerisics. Figure 6 presens a secondary feedback hrough an opocoupler driven by a TSM0. This device offers wo operaional amplifiers and a volage reference, hus allowing he regulaion of boh oupu volage and curren. An inegraed OR funcion performs he combinaion of he wo resuling error signals, leading o a dual volage and curren limiaion, known as a recangular oupu characerisic. This ype of power supply is especially useful for baery chargers where he oupu is mainly used in curren mode, in order o deliver a defined charging rae. The accurae volage regulaion is also convenien for Li-ion baeries which require boh modes of operaion. Wide range of V DD volage The useful V DD pin volage range exends from 8 V o 40 V. This feaure offers a grea flexibiliy in design o achieve various behaviors. In figure 6 a forward configuraion has been chosen o supply he device wih wo benefis: as soon as he device sars swiching, i immediaely receives some energy from he auxiliary winding. C5 can be herefore reduced and a small ceramic chip (00 nf) is sufficien o insure he filering funcion. The oal sar up ime from he swich on of inpu volage o oupu volage presence is dramaically decreased. he oupu curren characerisic can be mainained even wih very low or zero oupu volage. Since he TSM0 is also supplied in forward mode, i keeps he curren regulaion up whaever he oupu volage is. 7/5

8 The V DD pin volage may vary as much as he inpu volage, ha is o say wih a raio of abou 4 for a wide range applicaion. Feedback pin principle of operaion A feedback pin conrols he operaion of he device. Unlike convenional PWM conrol circuis which use a volage inpu (he invered inpu of an operaional amplifier), he pin is sensiive o curren. Figure 7 presens he inernal curren mode srucure. The Power MOSFET delivers a sense curren I s which is proporional o he main curren Id. R2 receives his curren and he curren coming from he pin. The volage across R2 is hen compared o a fixed reference volage of abou 0.32 V. The MOSFET is swiched off when he following equaion is reached: R 2 ( I S + I ) = 0.32V By exracing I S : 0.32V I S = I R 2 By using he curren sense raio of he MOSFET G ID : 0.32V I D = G ID I S = G ID I R 2 When I is zero (opocoupler in off sae), he device operaes a is full curren capaciy which Figure 7: Inernal Curren Conrol Srucure corresponds o he drain curren limiaion I Dlim. This value can be expressed as: 0.32V I Dlim = G ID R 2 By expressing again I D as a funcion of I Dlim and I, i comes: I = I G I D Dlim ID This formula is valid as long as I saisfies : I Dlim I < G ID The inernal design of he VIPer2 is done in such a way ha he device sops swiching when I exceeds a hreshold given by I sd. This value is abou 85% of he above expression, and is represened on figure 4. I is herefore possible o address a real 0% duy cycle, which is especially imporan when he converer is lighly loaded. Acually, i will ener a burs mode operaion by missing swiching cycles, as soon as he drain curren is abou 5% of I Dlim, ha is o say 60 ma. I is hen possible o build he oal DC ransfer funcion beween I D and I as shown on figure 8. This figure also akes ino accoun he inernal blanking ime and is associaed minimum urn on ime. This imposes a minimum drain curren under which he device is no able o conrol i in a linear way any more. This drain curren depends on he 50kHz OSCILLA TOR Id +Vdd S PWM LATCH R Q Secondary feedback I 0.32V Is R C R2 8/5

9 Figure 8: I Transfer Funcion Figure 9: Sar Up Sequence I Dpeak V DD I Dlim V ONmin IN L 60mA ONmin V 2 IN L I sd Par masked by I sd I V DDon V DDoff I ss primary inducance value of he ransformer and he inpu volage. Two cases may occur, depending on he value of his curren versus he fixed 60 ma, as described above. In he above resuls, he resisance R never appears in he compuaion. This is normal, because he opocoupler forces a curren ino he pin and his curren is compleely ransmied o he summing node of he fas curren mode comparaor. Bu ogeher wih he capacior C, his resisance builds a noise canceller filer avoiding any spurious volage o jam he curren mode secion. V OUT Sar up sequence This device includes a high volage sar up curren source conneced on he drain of he device. As soon as a volage is applied on he inpu of he converer, his sar up curren source is acivaed as long as V DD is lower han V DDon. When reaching V DDon, he sar up curren source is swiched off and he device begins o operae by urning on and off is main power MOSFET. As he pin does no receive any curren from he opocoupler, he device operaes a full curren capaciy and he oupu volage rises unil reaching he regulaion poin where he secondary loop begins o send a curren in he opocoupler. A his poin, he converer eners a regulaed operaion where he pin receives he amoun of curren needed o deliver he righ power on secondary side. This sequence is shown in figure 9. Noe ha during he real saring phase ss, he device consumes some energy from he V DD capacior, waiing for he auxiliary winding o provide a coninuous supply. If he value of his capacior is oo low, he sar up phase is erminaed before receiving any energy from he auxiliary winding and he converer never sars up. This is illusraed also in he same figure in dashed lines. Figure 0: Overvolage Sequence V DD V DDovp V DDon V DDoff V DS 9/5

10 Overvolage hreshold An overvolage deecor on he V DD pin allows he VIPer2 o rese iself when V DD exceeds V DDovp. This is illusraed in figure 0, which shows he whole sequence of an overvolage even. Noe ha his even is only lached for he ime needed by V DD o reach V DDoff, and hen he device resumes normal operaion auomaically. 0/5

11 SO-8 MECHANICAL DATA DIM. mm. inch MIN. TYP MAX. MIN. TYP. MAX. A a a a b b C c 45 (yp.) D E e e F L M S 8 (max.) L /5

12 Plasic DIP-8 MECHANICAL DATA DIM. mm. inch MIN. TYP MAX. MIN. TYP. MAX. A a B B b b D E e e e F I L Z /5

13 SO-8 TUBE SHIPMENT (no suffix) VIPer2ADIP / VIPer2AS B C A Base Q.y 00 Bulk Q.y 2000 Tube lengh (± 0.5) 532 A 3.2 B 6 C(±0.) 0.6 All dimensions are in mm. TAPE AND REEL SHIPMENT (suffix 3TR ) REEL DIMENSIONS Base Q.y 2500 Bulk Q.y 2500 A (max) 330 B (min).5 C(±0.2) 3 F 20.2 G (+ 2 / -0) 2.4 N (min) 60 T (max) 8.4 All dimensions are in mm. TAPE DIMENSIONS According o Elecronic Indusries Associaion (EIA) Sandard 48 rev. A, Feb 986 Tape widh W 2 Tape Hole Spacing P0 (± 0.) 4 Componen Spacing P 8 Hole Diameer D (± 0./-0).5 Hole Diameer D (min).5 Hole Posiion F (± 0.05) 5.5 Comparmen Deph K (max) 4.5 Hole Spacing P (± 0.) 2 All dimensions are in mm. End Sar Top cover ape No componens 500mm min Componens Empycomponens pockes saled wih cover ape. User direcion of feed No componens 500mm min 3/5

14 DIP-8 TUBE SHIPMENT (no suffix) A C B Base Q.y 20 Bulk Q.y 000 Tube lengh (± 0.5) 532 A 8.4 B.2 C(±0.) 0.8 All dimensions are in mm. 4/5

15 Informaion furnished is believed o be accurae and reliable. However, STMicroelecronics assumes no responsibiliy for he consequences of use of such informaion nor for any infringemen of paens or oher righs of hird paries which may resuls from is use. No license is graned by implicaion or oherwise under any paen or paen righs of STMicroelecronics. Specificaions menioned in his publicaion are subjec o change wihou noice. This publicaion supersedes and replaces all informaion previously supplied. STMicroelecronics producs are no auhorized for use as criical componens in life suppor devices or sysems wihou express wrien approval of STMicroelecronics. The ST logo is a regisered rademark of STMicroelecronics 200 STMicroelecronics - Prined in ITALY- All Righs Reserved. STMicroelecronics GROUP OF COMPANIES Ausralia - Brazil - China - Finland - France - Germany - Hong Kong - India - Ialy - Japan - Malaysia - Mala - Morocco - Singapore - Spain - Sweden - Swizerland - Unied Kingdom - U.S.A. hp:// 5/5

EN: This Datasheet is presented by the m anufacturer. Please v isit our website for pricing and availability at ore.hu.

EN: This Datasheet is presented by the m anufacturer. Please v isit our website for pricing and availability at www.hest ore.hu. VIPer22ADIP - E VIPer22AS - E Low Power OFF-Line SMPS Primary Switcher Features