2006/03/28 ver.2 page 1 sp6013 synchronous rectifier driver description applications the fundamental of sp6013 synchronous rectifier (sr) driver ic is based on our u.s. patented methods that ut ilize the principle of ?prediction? logic circuit. the ic deliberates previous cycle timing to control the sr in present cycle by ?predictive? algorithm that makes adjustments to the turn-off time, in order to achieve maximum efficiency and avoid cross-conduction at the same time. it also maintains the mosfet?s body diode conduction at minimum level. the sp6013 is capable to adapt in almost all existing flyback converters with few adjustments considered necessary. ? servers & workstations ? storage area network power supplies ? telecommunication converters ? embedded systems ? industrial & commercial systems using high current processors features pin configuration (sop-8) part marking ? offers efficiency improvement over schottky diode (depends on drive configuration of the sr). ? drives all logic level power mosfet. ? prediction gate timing control. ? minimum mosfet body diode conduction. ? operating frequency up to 650 khz. ? synchronize to transformer secondary voltage waveform.
2006/03/28 ver.2 page 2 sp6013 synchronous rectifier driver typical applcation circuit pin description pin symbol description 1 timing discontinuous current filter timi ng adjustment resistor connection. 2 pred capacitor to store previous cycle timing for catch mosfet 3 rapid-adj capacitor connection to adjust fast pulse width reduction response. 4 cramp ramp capacitor adjustment to extend mosfet?s gate timing. 5 gnd ground connection. 6 mosg-c catch mosfet gate drive. 7 vdd dc supply voltage. 8 sync synchronized signal from transformer?s output.
2006/03/28 ver.2 page 3 sp6013 synchronous rectifier driver block diagram ordering information part number package part marking sp6013s8rg sop-8 sp6013 i sp6013s8tg sop-8 sp6013 i sp6013s8rg : 7? tape reel ; pb ? free sp6013s8tg : tube ; pb ? free absoulte maximum ratings (ta=25 , unless otherwise specified.) the following ratings designate persistent limits beyond which damage to the device may occur . symbol parameter value unit v dd dc supply voltage 17 v sync sync voltage 7 v i out peak source current (pulsed) 3 a peak sink current (pulsed) 3 a p d power dissipation @ t a =85 (*) 0.25 w t j operating junction temperature range -40 to 150 t stg storage temperature range -40 to 150 t lead lead soldering temperature for 5 sec. 260
2006/03/28 ver.2 page 4 sp6013 synchronous rectifier driver thermal resistance symbol parameter value unit r ? jc thermal resistance junction ? case (*) 45 /w (*) the power dissipation and thermal resistance are evalua ted under copper board mounted with free air conditions. electrical characteristics (t a =25 , v dd =12v, freq. =300 khz, duty cycle=50%, unless otherwise specified.) symbol parameter conditions min. typ. max. unit supply input no load 10 16 ma i dd supply current v sync =0v, no load 7.5 10 ma vonth vdd turn on threshold 9.5 10 v voffth vdd turn off threshold 8 8.5 v sync reference (sync) vshth sync high threshold 3.9 5.0 v vslth sync low threshold 0.9 1.2 v mosfet gate driver (mosg-c) voh output high voltage io = -200ma 11.5 11.8 v vol output low voltage io = 200ma 0.1 0.2 v td propagation delay no load 15 35 ns tpred no load 120 ns tr rise time load = 1nf (*) 10 25 ns tf fall time load = 1nf (*) 10 25 ns (*) tr & tf are measured among 10% an d 90% of starting and final voltage.
2006/03/28 ver.2 page 5 sp6013 synchronous rectifier driver performance characteristics (t a =25 , unless otherwise specified.) *fig. 1 : no load ; no sync *fig. 4~5 : frequency = 65 khz.
2006/03/28 ver.2 page 6 sp6013 synchronous rectifier driver sop- 8 package outline
2006/03/28 ver.2 page 7 sp6013 synchronous rectifier driver information provided is alleged to be exact and consistent. sync power corporation presumes no responsibility for the penalties of use of such information or for any violation of pa tents or other rights of third parties, which may result from it s use. no license is granted by allegation or otherwise under any pate nt or patent rights of sync power corporation. conditions mentioned in this publication ar e subject to change without notice. this p ublication surpasses and replaces all information previously supplied. sync power corporation products are not authorized for use as critical components in life support devices or systems without express written approval of sync power corporation. ?the sync power logo is a registered trademark of sync power corporation ?2004 sync power corporation ? printed in taiwan ? all rights reserved sync power corporation 7f-2, no.3-1, park street nankang district (nksp), taipei, taiwan, 115, r.o.c phone: 886-2-2655-8178 fax: 886-2-2655-8468 http://www.syncpower.com
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