ST VIPer22A-E VIPer22ADIP-E VIPer22AS-E handbook
Contents
1. 1 These test conditions obtained with a resistive load are leading to the maximum conduction time of the device Doc ID 12050 Rev 2 2 VIPer22A E VIPer22ADIP E VIPer22AS E Electrical characteristics d Table 6 Oscillation section Symbol Parameter Oscillator frequency Test conditions Vpp Vppof 35 V Min Typ Max Unit Fosc total variation Tj 0 100 C Se 90 See Reg Table 7 PWM comparator section Symbol Parameter Test conditions Min Typ Max Unit Gip leg to Ip current gain See Figure 12 on page 14 560 A Peak current Vrg OV IDim limitation See Figure 12 on page 14 OSG BEE ie ANG lfgsa pp shutdown current See Figure 12 on page 14 0 9 mA FB pin input Ib 0 mA RFB impedance See Figure 12 on page 14 Le KO Current sense dela Aah Y lip 0 4A 200 ns th Blanking time 500 ns Minimum turn ON tonmin time 700 ns Table 8 Overtemperature section Symbol Parameter Test conditions Min Typ Max Unit Thermal shutdown i a Tsp temperature See Figure 13 on page 14 140 170 C Thermal shutdown 5 2 Tuyst hysteresis See Figure 13 on page 14 40 C Table 9 Typical power capability 1 Mains type SO 8 DIP 8 European 195 265 Vac 12 W 20 W US Wide range 85 265 Vac 7W 12 W 1 Above power capabilities are given under adequate ther2. 0 98 Vin 100V 0 97 Vdd 20V 0 96 0 95 0 94 20 0 2 40 60 80 100 120 Temperature C A Doc ID 12050 Rev 2 15 21 Package mechanical data VIPer22A E VIPer22ADIP E VIPer22AS E 6 16 21 Package mechanical data In order to meet environmental requirements ST offers these devices in different grades of ECOPACK packages depending on their level of environmental compliance ECOPACK specifications grade definitions and product status are available at www st com ECOPACK is an ST trademark Doc ID 12050 Rev 2 ky VIPer22A E VIPer22ADIP E VIPer22AS E Package mechanical data Table 11 DIP 8 mechanical data Databook mm Dim Min Nom Max A 5 33 A1 0 38 A2 2 92 3 30 4 95 b 0 36 0 46 0 56 b2 1 14 1 52 1 78 0 20 0 25 0 36 D 9 02 9 27 10 16 7 62 7 87 8 26 E1 6 10 6 35 7 11 e 2 54 eA 7 62 eB 10 92 L 2 92 3 30 3 81 Package Weight Gr 470 Figure 16 Package dimensions A Doc ID 12050 Rev 2 17 21 Package mechanical data VIPer22A E VIPer22ADIP E VIPer22AS E 18 21 Table 12 SO 8 mechanical data Databook mm Dim Min Nom Max A 1 35 1 75 A1 0 10 0 25 A2 1 10 1 65 B 0 33 0 51 C 0 19 0 25 D 4 80 5 00 E 3 80 4 00 e 1 27 H 5 80 6
3. kyy VIPer22A E VIPer22ADIP E VIPer22AS E Low power OFF line SMPS primary switcher Features Fixed 60 kHz switching freguency 9 V to 38 V wide range Vpp voltage Current mode control Auxiliary undervoltage lockout with hysteresis High voltage start up current source Overtemperature overcurrent and overvoltage protection with auto restart Table 1 Typical power capability Mains type SO 8 DIP 8 European 195 265 Vac 12 W 20 W US wide range 85 265 Vac 7W 12 W Description The VIPer22A E combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip SO 8 DIP 8 Typical applications cover off line power supplies for battery charger adapters standby power supplies for TV or monitors auxiliary supplies for motor control etc The internal control circuit offers the following benefits Large input voltage range on the Vpp pin accommodates changes in auxiliary supply voltage This feature is well adapted to battery charger adapter configurations Automatic burst mode in low load condition Overvoltage protection in HICCUP mode Figure 1 Block diagram DRAIN a ON OFF 60kHz 6 REGULATO OSCILLATOR INTERNAL SUPPLY OVERTEMP DETECTOR VDD BLANKING 8 14 5V OVERVOLTAG
4. Ty 25 C Vpp 18 V unless otherwise specified Table 4 Power section Symbol Parameter Test conditions Min Typ Max Unit BVpss Drain source voltage lp 1 mA Vrg 2V 730 V OFF state drain Vps 500 V Veg 2 V loss current Ty 125 C aH mA i Static drain source Ip 0 4A 15 17 o DS on ON state resistance Ip 0 4 A Tj 100 C 31 Ip 0 2 A Vin 300 V 1 t Fall time pamela 100 ns See Figure 9 on page 13 a Ip 0 4 A Vin 300 V 1 t Rise t 50 i SE R See Figure 9 on page 13 i Coss Drain capacitance Vps 25 V 40 pF 1 On clamped inductive load Table 5 Supply section Symbol Parameter Test conditions Min Typ Max Unit Start up charging La y Vos 400 V E a DDch current DD V DDon See Figure 10 on page 13 Start up charging ar lDDott current in thermal oo ees 1004 0 mA shutdown J7 SD HYST Operating supply _ IDDO current not switching IFB 2 mA 3 5 MA Operating supply a a 1 Ipp1 current switching leg 0 5 mA ID 50 mA 4 5 mA Drst Restart duty cycle See Figure 11 on page 13 16 v Vpp undervoltage See Figure 10 7 8 9 v DDoff shutdown threshold Figure 11 on page 13 Vpp start up See Figure 10 Vooon threshold Figure 11 on page 13 19 14 gt 16 y Vpp threshold 5 Vpphyst hysteresis See Figure 10 on page 13 5 8 6 5 7 2 V Vpp overvoltage VpDevp threshold 38 42 iii y
5. until reaching the regulation point where the secondary loop begins to send a current in the optocoupler At this point the converter enters a regulated operation where the FB pin receives the amount of current needed to deliver the right power on secondary side This sequence is shown in Figure 7 Note that during the real starting phase tss the device consumes some energy from the Vpp capacitor waiting for the auxiliary winding to provide a continuous supply If the value of this capacitor is too low the start up phase is terminated before receiving any energy from the auxiliary winding and the converter never starts up This is illustrated also in the same figure in dashed lines Doc ID 12050 Rev 2 11 21 Operations VIPer22A E VIPer22ADIP E VIPer22AS E 4 5 12 21 Overvoltage threshold An overvoltage detector on the Vpp pin allows the VIPer22A to reset itself when Vpp exceeds Vppovp This is illustrated in Figure 8 which shows the whole sequence of an overvoltage event Note that this event is only latched for the time needed by Vpp to reach VDpoft and then the device resumes normal operation automatically Figure 8 Overvoltage sequence V DD A VpDovp VDDon VDooff t P V DS A t Doc ID 12050 Rev 2 ky VIPer22A E VIPer22ADIP E VIPer22AS E Operation pictures 5 Operation pictures Figure 9 Rise and fall time Ip A t P Vps
6. voltage of about 0 23 V The MOSFET is switched off when the following equation is reached Rp Ig leg 0 23V By extracting Is Using the current sense ratio of the MOSFET Gp 0 23V Ip Gip Is Go Ira The current limitation is obtained with the FB pin shorted to ground Vrp 0 V This leads to a negative current sourced by this pin and expressed by By reporting this expression in the previous one it is possible to obtain the drain current limitation Ipjim 1 1 In a real application the FB pin is driven with an optocoupler as shown on Figure 5 which acts as a pull up So it is not possible to really short this pin to ground and the above drain current value is not achievable Nevertheless the capacitor C is averaging the voltage on the FB pin and when the optocoupler is off start up or short circuit it can be assumed that the corresponding voltage is very close to 0 V For low drain currents the formula 1 is valid as long as IFB satisfies lpg lt lrgsa where lFBsg is an internal threshold of the VIPer22A If I p exceeds this threshold the device will stop switching This is represented on Figure 12 on page 14 and Irpeq value is specified in the PWM COMPARATOR SECTION Actually as soon as the drain current is about 12 of Idlim that is to say 85 mA the device will enter a burst mode operation by missing switching cycles This is especially important when the converter is lightly loaded ky Doc ID 12050 R
7. 20 h 0 25 0 50 L 0 40 1 27 k 8 max ddd 0 1 Figure 17 Package dimensions D sel E v St Al SEATING PLANE C Doc ID 12050 Rev 2 VIPer22A E VIPer22ADIP E VIPer22AS E Order codes 7 Order codes Table 13 Order codes Order codes Package Packaging VIPER22ASTR E SO 8 Tape and reel VIPer22AS E SO 8 Tube VIPer22ADIP E DIP 8 Tube Doc ID 12050 Rev 2 19 21 Revision history VIPer22A E VIPer22ADIP E VIPer22AS E 8 20 21 Revision history Table 14 Document revision history Date Revision Changes 09 Feb 2006 1 Initial release 25 Nov 2010 2 Updated Table 17 Doc ID 12050 Rev 2 VIPer22A E VIPer22ADIP E VIPer22AS E Please Read Carefully Information in this document is provided solely in connection with ST products STMicroelectronics NV and its subsidiaries ST reserve the right to make changes corrections modifications or improvements to this document and the products and services described herein at any time without notice All ST products are sold pursuant to ST s terms and conditions of sale Purchasers are solely responsible for the choice selection and use of the ST products and services described herein an
8. A 90 300V t t SOURCE fu x VIPer22A 10 t Figure 10 Start up Vpp current IDD Ippo Vobhyst VDD VDDon gt VDoft Iboen 100 V lt Vps lt 400 V Fey 0 kHz Figure 11 Restart duty cycle VDD N VDDon oo i E ton tst t SOURCE gt VIPer22A g ____ ST 4 RST tstttcn ky Doc ID 12050 Rev 2 13 21 Operation pictures VIPer22A E VIPer22ADIP E VIPer22AS E Figure 12 Peak drain current vs feedback current 100V Ip Inpeak VDD DRAIN 1 Fosc 18V gt 4h 100V SOURCE VEB IrBsd RFB A The drain current limitation is obtained for VFB 0 V anda negative current is drawn from the FB pin See the Application 2 IFB section for further details p lrs 0 lFBsd Figure 13 Thermal shutdown Tj Tsp THYST t Von VpDon Automatic start up Doc ID 12050 Rev 2 14 21 2 VIPer22A E VIPer22ADIP E VIPer22AS E Operation pictures Figure 14 Switching frequency vs temperature 1 01 Vdd 10V 35V 0 99 Normalized Frequency o D o 20 0 20 40 60 80 100 120 Temperature C Figure 15 Current limitation vs temperature 1 04 1 03 1 02 1 01 Normalized Current Limitation o wo o
9. E R LATCH Bb FF 9 42V FB SOURCE November 2010 Doc ID 12050 Rev 2 1 21 www st com Contents VIPer22A E VIPer22ADIP E VIPer22AS E Contents 1 Electrical data ak iat zacamant la Za a ti a it Rp aaa aaa Tan tt 3 1 1 Maximum ratings vino Sete he eee eee ne Pama Bade a e eee d 3 1 2 Thermal data sia ee e e e o a e an a a 3 2 Electrical characteristics lt aaa aaa aaa aa aee 4 3 Pin connections and function ccocooco 6 4 Operations sis rsi wa aaa e d anne Ie bak REESS ee ee masa 7 41 Rectangular U I output characteristics 7 4 2 Wide range of VDD voltage ee 8 4 3 Feedback pin principle of operation eee 8 4 4 Startup sequence Li 11 45 Overvoltage threshold cmc 12 5 Operation pictures ca nm a an na aaa aaa ma aaa 13 6 Package mechanical data 2 000 cece eee eee 16 7 Order codes lt lt cas aia sa ee eee ia aaa ni aa Kau Mma d eka ea 19 8 Revision history n n m cae te tar da wr i aa ie nk Tt 20 2 21 Doc ID 12050 Rev 2 ky VIPer22A E VIPer22ADIP E VIPer22AS E Electrical data 1 Electrical data 1 1 Maximum ratings Stressing the device above the rating listed in the absolute maximum ratings table may cause permanent damage to the device These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is n
10. PPLICATIONS AT USER S OWN RISK Resale of ST products with provisions different from the statements and or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever any liability of ST ST and the ST logo are trademarks or registered trademarks of ST in various countries Information in this document supersedes and replaces all information previously supplied The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners 2010 STMicroelectronics All rights reserved STMicroelectronics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Philippines Singapore Spain Sweden Switzerland United Kingdom United States of America www st com ky Doc ID 12050 Rev 2 21 21
11. d ST assumes no liability whatsoever relating to the choice selection or use of the ST products and services described herein No license express or implied by estoppel or otherwise to any intellectual property rights is granted under this document If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE ST PRODUCTS ARE NOT RECOMMENDED AUTHORIZED OR WARRANTED FOR USE IN MILITARY AIR CRAFT SPACE LIFE SAVING OR LIFE SUSTAINING APPLICATIONS NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY DEATH OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ST PRODUCTS WHICH ARE NOT SPECIFIED AS AUTOMOTIVE GRADE MAY ONLY BE USED IN AUTOMOTIVE A
12. ev 2 9 21 Operations VIPer22A E VIPer22ADIP E VIPer22AS E Figure 6 lfg transfer function Ibpeak A IDiim Part masked by the Irpsd threshold 0 TrBsd It is then possible to build the total DC transfer function between Ip and leg as shown on Figure 6 on page 10 This figure also takes into account the internal blanking time and its associated minimum turn on time This imposes a minimum drain current under which the device is no more able to control it in a linear way This drain current depends on the primary inductance value of the transformer and the input voltage Two cases may occur depending on the value of this current versus the fixed 85 mA value as described above 10 21 Doc ID 12050 Rev 2 ky VIPer22A E VIPer22ADIP E VIPer22AS E Operations 4 4 Startup seguence Figure 7 Startup sequence Yoo VDDon VDDof Vout This device includes a high voltage start up current source connected on the drain of the device As soon as a voltage is applied on the input of the converter this start up current source is activated as long as Vpp is lower than Vppon When reaching Vppon the start up current source is switched OFF and the device begins to operate by turning on and off its main power MOSFET As the FB pin does not receive any current from the optocoupler the device operates at full current capacity and the output voltage rises
13. mal conditions Doc ID 12050 Rev 2 5 21 Pin connections and function VIPer22A E VIPer22ADIP E VIPer22AS E 3 6 21 Pin connections and function Figure 2 Pin connection SOURCE SOURCE FB VDD SO 8 DIP 8 Figure 3 Current and voltage conventions lop Ip a2 A B CONTROL SOURCE VFB VIPer22A Table 10 Pin function Pin Name Pin function Power supply of the control circuits Also provides a charging current during start up thanks to a high voltage current source connected to the drain For this purpose an hysteresis comparator monitors the Vpp voltage and provides two thresholds Vpp VpDon Voltage value typically 14 5 V at which the device starts switching and turns off the start up current source VpDott Voltage value typically 8 V at which the device stops switching and turns on the start up current source SOURCE Power MOSFET source and circuit ground reference Power MOSFET drain Also used by the internal high voltage current source during DRAIN h i start up phase for charging the external Vpp capacitor Feedback input The useful voltage range extends from O V to 1 V and defines the FB peak drain MOSFET current The current limitation which corresponds to the maximum drain current is obtained for a FB pin shorted to the SOURCE pin Doc ID 12050 Rev 2 ky VIPer22A E VIPer22ADIP E VIPer22AS E Operations 4 Operations 4 1 Rec
14. ot implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability Table 2 Absolute maximum rating Symbol Parameter Value Unit Vpsssy Start up drain source voltage Ty 25 125 C 2 0 3 400 V Ip Continuous drain current Internally limited A Vpp Supply voltage 0 50 V leg Feedback current 3 mA Electrostatic discharge Vesp Machine model R 0 Q C 200 pF 200 V Charged device model 1 5 kV Ty Junction operating temperature Internally limited C Tc Case operating temperature 40 to 150 C T stg Storage temperature 55 to 150 C 1 This parameter applies when the start up current source is OFF This is the case when the VDD voltage has reached Vppon and remains above Vppof 2 This parameter applies when the start up current source is on This is the case when the VDD voltage has not yet reached Vppon Or has fallen below Vppctt 1 2 Thermal data Table 3 Thermal data Symbol Parameter SO 8 DIP 8 Unit Ric Thermal resistance junction case Max 25 15 C W Riha Thermal resistance junction ambient 1 Max 55 45 C W 1 When mounted on a standard single sided FR4 board with 200 mm of Cu at least 35 um thick connected to all DRAIN pins d Doc ID 12050 Rev 2 3 21 Electrical characteristics VIPer22A E VIPer22ADIP E VIPer22AS E 2 4 21 Electrical characteristics
15. tangular U l output characteristics Figure 4 Rectangular U I output characteristics for battery charger I T T gt pcout R1 Ti eka C4 D3 YI l 4 ACIN ia aa ji CFO Fu Iso1 Ut C4 on we x x VDD DRAIN C5 in FB conmo gt Ak c6 SOURCE VIPerX2A C7 I R2 R3 Vee R4 Vref I A complete regulation scheme can achieve combined and accurate output characteristics Figure 4 presents a secondary feedback through an optocoupler driven by a TSM101 This device offers two operational amplifiers and a voltage reference thus allowing the regulation of both output voltage and current An integrated OR function performs the combination of the two resulting error signals leading to a dual voltage and current limitation known as a rectangular output characteristic This type of power supply is especially useful for battery chargers where the output is mainly used in current mode in order to deliver a defined charging rate The accurate voltage regulation is also convenient for Li ion batteries which reguire both modes of operation ky Doc ID 12050 Rev 2 7 21 Operations VIPer22A E VIPer22ADIP E VIPer22AS E 4 2 4 3 8 21 Wide range of Vpp voltage The Vpp pin voltage range extends from 9 V to 38 V This feature offers a great flexibility in design to achie
16. ve various behaviors In Figure 4 on page 7 a forward configuration has been chosen to supply the device with two benefits e As soon as the device starts switching it immediately receives some energy from the auxiliary winding C5 can be therefore reduced and a small ceramic chip 100 nF is sufficient to insure the filtering function The total start up time from the switch on of input voltage to output voltage presence is dramatically decreased e The output current characteristic can be maintained even with very low or zero output voltage Since the TSM101 is also supplied in forward mode it keeps the current regulation up whatever the output voltage is The Vpp pin voltage may vary as much as the input voltage that is to say with a ratio of about 4 for a wide range application Feedback pin principle of operation A feedback pin controls the operation of the device Unlike conventional PWM control circuits which use a voltage input the inverted input of an operational amplifier the FB pin is sensitive to current Figure 5 presents the internal current mode structure Figure 5 Internal current control structure Secondary feedback Doc ID 12050 Rev 2 ky VIPer22A E VIPer22ADIP E VIPer22AS E Operations The Power MOSFET delivers a sense current which is proportional to the main current Id R2 receives this current and the current coming from the FB pin The voltage across R2 is then compared to a fixed reference
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ST VIPer22A E VIPer22ADIP E VIPer22AS E handbook