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for further information contact your local stmicroelectronics sales office. january 2013 doc id 024120 rev 1 1/14 14 STEVAL-ISA112V1 wide range non-isolated flyback demonstration board, single-output 12 v/4 w based on the viper06hn data brief features universal input mains range: ? input voltage 90 - 265 v ac ? frequency 45 - 65 hz single-output voltage: 12 v at 350 ma continuous operation standby mains consumption: < 30 mw at 230 v ac average efficiency: > 75% complying with eup lot 6 requirements fully protected against short-circuit fully protected against overheating compliant to emc norm en55022-class-b rohs compliant description the STEVAL-ISA112V1 demonstration board implements a 4 w single-output wide range mains power supply to be used in applications such as white goods, smaller home appliances, home automation, led driver, etc. the board uses the new viper06hn, a new offline high voltage converter from the viperplus family by stmicroelectronics. the viper06 is specifically designed for fixed frequency flyback converters, combining a high-performance low voltage pwm controller chip and a max. 32 rds(on), 800 v bv(dss), avalanche-rugged power mosfet in the same package. the application is optimized for less than 30 mw standby consumption and meets the epa 2.0 limits, therefore helping to meet the most stringent energy saving requirements. the STEVAL-ISA112V1 demonstration board implements several forms of protection that considerably increase end-product safety and reliability: overload protection, feedback disconnection, thermal shutdown. s teval-i s a112v1 www.st.com
contents STEVAL-ISA112V1 2/14 doc id 024120 rev 1 contents 1 adapter features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 schematic, bill of material and layout . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 electrical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 thermal performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1 emi performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
STEVAL-ISA112V1 adapter features doc id 024120 rev 1 3/14 1 adapter features the electrical specifications of the demonstration board are listed in ta b l e 1 . table 1. STEVAL-ISA112V1 electrical specifications parameter symbol value input voltage range v in 90 v ac - 265 v ac output voltage v out 12 v max. output current i out 0.35 a precision of output regulation vout_lf 5% high frequency output voltage ripple vout_hf 50 mv max. ambient operating temperature t amb 60 oc
schematic, bill of material and layout STEVAL-ISA112V1 4/14 doc id 024120 rev 1 2 schematic, bill of material and layout the schematic of the board is reported in figure 1 and the bom in ta bl e 2 . figure 1. STEVAL-ISA112V1 electrical diagram 1 2 3 5,6 7, 8 4 tr 12v/ 3 50ma r au x 8 5v a c - 265v a c rlim + cvdd dz cc1 cf ilt2 rf b h2 rf b h1 rf b l2 + cin1 cp cf ilt1 rf b l1 + cout d2 lin ac in control fb drain gnd vdd comp lim viper06h d1 ground + cin2 r0 rc cc vout - + d0 j1 d au x ac in cf b am11624v1
STEVAL-ISA112V1 schematic, bill of material and layout doc id 024120 rev 1 5/14 table 2. bill of material ref. part description manufacturer cin1 3.3 f, 400 v nhg series electrolytic capacitor cin2 3.3 f, 400 v nhg series electrolytic capacitor cvdd 1 f, 50 v electrolytic capacitor cfilt1 100 nf, 50 v ceramic capacitor cc 10 nf, 50 v ceramic capacitor cp 1 nf, 50 v ceramic capacitor cfb 1 nf, 50 v ceramic capacitor cout 330 f, 16 v zl series ultra-low esr electrolytic capacitor rubycon ccl not mounted cfilt2 not mounted d0 df06m 600 v 1 a diode bridge vishay d1 not mounted d2 stps2h100 100 v, 2 a, power schottky rectifier st daux 1n4148 small signal diode dz not mounted r0 4.7 3/4 w resistor rlim 15 k 5% 1/4 w resistor rc 47 k 5% 1/4 w resistor rfbh1 33 k 1% 1/4 w resistor rfbh2 0 rfbl1 12 k 1% 1/4 w resistor rfbl2 0.47 k 1% 1/4 w resistor raux not mounted ic1 viper06hn offline high-voltage pwm controller st t1 1921.0040 transformer magnetica lin b82144a2105j000 1 mh inductor lbc series epcos
schematic, bill of material and layout STEVAL-ISA112V1 6/14 doc id 024120 rev 1 figure 2. demonstration board layout am11625v1
STEVAL-ISA112V1 transformer doc id 024120 rev 1 7/14 3 transformer the transformer characteristics are listed in the table below. the images below show size and pin distances ([mm]) of the transformer. table 3. transformer characteristics parameter value test conditions manufacturer magnetica part number 1921.0040 primary inductance (pins 3-4) 1.2 mh 15% measured at 1 khz 0.1 v leakage inductance 2.8% measured at 10 khz 0.1 v primary to secondary turn ratio (3 - 4)/(5 - 8) 6.11 5% measured at 10 khz 0.1 v primary to auxiliary turn ratio (3 - 4)/(2 - 1) 5 5% measured at 10 khz 0.1 v figure 3. transformer size and pin diagram pin distances figure 4. transformer size and pin diagram electrical diagram am11626v1 am11627v1
measurements STEVAL-ISA112V1 8/14 doc id 024120 rev 1 4 measurements 4.1 electrical performance figure 5. transformer size side view 1 figure 6. transformer size side view 2 am1162 8 v1 am11629v1 figure 7. standby consumption at no load: ic supplied from the output (j1 selected) figure 8. standby consumption at no load: ic self-supplied (j1 not selected) am116 3 0v1 am116 3 1v1
STEVAL-ISA112V1 measurements doc id 024120 rev 1 9/14 figure 9. efficiency at different input voltages: ic supplied from the output (j1 selected) figure 10. efficiency at different input voltages: ic self-supplied (j1 not selected) am116 3 2v1 am116 33 v1 figure 11. line regulation at different loads: ic supplied from the output (j1 selected) figure 12. line regulation at different loads: ic self-supplied (j1 not selected) am116 3 4v1 am116 3 5v1 figure 13. load regulation at different input voltages: ic supplied from the output (j1 selected) figure 14. load regulation at different input voltages: ic self-supplied (j1 not selected) am116 3 6v1 am116 3 7v1
thermal performances STEVAL-ISA112V1 10/14 doc id 024120 rev 1 5 thermal performances a thermal analysis of the board has been performed using an ir camera for 85 v ac , 115 v ac , 230 v ac and 265 v ac mains input, full load condition, both with and without the self supply function. the results are shown in the following figures. when the self-supply function is used the viper06 temperature is higher, due to the power dissipated by the hv- startup generator. figure 15. thermal map at v in = 85 v ac , iout = 350 ma, t amb = 25 c: ic supplied from the output (j1 selected) figure 16. thermal map at v in = 85 v ac , iout = 350 ma, t amb = 25 c: ic self supplied (j1 not selected) am116 38 v1 am116 3 9v1 figure 17. thermal map at v in = 115 v ac , iout = 350 ma, t amb = 25 c: ic supplied from the output (j1 selected) figure 18. thermal map at v in = 115 v ac , iout = 350 ma, t amb = 25 c: ic self supplied (j1 not selected) am11640v1 am11641v1
STEVAL-ISA112V1 thermal performances doc id 024120 rev 1 11/14 figure 19. thermal map at v in = 230 v ac , iout = 350 ma, t amb = 25 c: ic supplied from the output (j1 selected) figure 20. thermal map at v in = 230 v ac , iout = 350 ma, t amb = 25 c: ic self supplied (j1 not selected) am11642v1 am1164 3 v1 figure 21. thermal map at v in = 265 v ac , iout = 350 ma, t amb = 25 c: ic supplied from the output (j1 selected) figure 22. thermal map at v in = 265 v ac , iout = 350 ma, t amb = 25 c: ic self supplied (j1 not selected) am11644v1 am11645v1
thermal performances STEVAL-ISA112V1 12/14 doc id 024120 rev 1 5.1 emi performance figure 23. average measurements at v in = 115 v ac , full load, t amb = 25 c; ic supplied from the output figure 24. average measurements at v in = 230 v ac , full load, t amb = 25 c; ic supplied from the output am11646v1 am11647v1
STEVAL-ISA112V1 revision history doc id 024120 rev 1 13/14 6 revision history table 4. document revision history date revision changes 08-jan-2013 1 initial release.
STEVAL-ISA112V1 14/14 doc id 024120 rev 1 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 he rein 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, and st as sumes 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. i f 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 whatsoev er 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 two authorized st representatives, 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 applications 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 whatsoev er, any liability of st. st and the st logo are trademarks or register ed 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. ? 2013 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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