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industrial & multimarket data sheet version 1.0, 2011-05-19 icls6021j icls6022j ICLS6022G icls6023j off-line led current mode controllers with integrated 650 v co olmos? & startup cell icls6x series led system driver ics
edition 2011-05-19 published by infineon technologies ag 81726 munich, germany ? 2011 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. infineon technologies compon ents may be used in life-su pport devices or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safe ty or effectiveness of that de vice or system. life support devices or systems are intended to be implanted in the hu man body or to support an d/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.
led system driver ics icls6x series data sheet 3 version 1.0, 2011-05-19 trademarks of infineon technologies ag aurix?, c166?, canpak?, ci pos?, cipurse?, econopac k?, coolmos?, coolset?, corecontrol?, crossave?, dave?, easypim?, econobridge?, econ odual?, econopim?, eicedriver?, eupec?, fcos?, hitfet?, hybridpack?, i2rf?, isoface?, isopack?, mipaq?, modstack?, my-d?, novalithic?, optimos?, or iga?, primarion?, prim epack?, primestack?, pro-sil?, profet?, rasic?, reversave?, satric?, sieget?, sindrion?, sipmos?, smartlewis?, solid flash?, tempfe t?, thinq!?, trench stop?, tricore?. other trademarks advance design system? (ads) of agilent te chnologies, amba?, arm?, multi-ice?, keil?, primecell?, realview?, thumb?, vision? of arm limited, uk. autosar? is licensed by autosar development partnership. bluetooth? of bluetooth sig inc. cat-iq? of dect forum. colossus?, firstgps? of trimble navigation ltd. emv? of emvc o, llc (visa holdings in c.). epcos? of epcos ag. flexgo? of microsoft corp oration. flexray? is licensed by flexray consortium. hyperterminal? of hilgraeve incorporated. iec? of commission electrot echnique internationale. irda? of infrared data association corporation. iso? of international organization for standardization. matlab? of mathworks, inc. maxim? of maxim integrated products, inc. microtec?, nucleus? of mentor graphics corporation. mifare? of nx p. mipi? of mipi alliance, inc. mips? of mips technologies, inc., usa. murata? of murata manufacturing co., microwave offi ce? (mwo) of applied wave research inc., omnivision? of omnivision technologies, inc. open wave? openwave systems inc. red hat? red hat, inc. rfmd? rf micro devices, inc. sirius? of sirius sate llite radio inc. solaris? of sun microsystems, inc. spansion? of spansion llc ltd. symbian? of sy mbian software limited. taiyo yuden? of taiyo yuden co. teaklite? of ceva, inc. t ektronix? of tektroni x inc. toko? of toko kabushiki kaisha ta. unix? of x/open company limited. verilog?, palladium? of cadence design systems, inc. vlynq? of texas instruments inco rporated. vxworks?, wind river? of wind river systems, inc. zetex? of diodes zetex limited. last trademarks update 2011-02-24 revision history page or item subjects (major changes since previous revision) version 1.0, 2011-05-19 new ics added: ICLS6022G and icls6023j version 1.0, 2010-08-10 first edition
led system driver ics icls6x series table of contents data sheet 4 version 1.0, 2011-05-19 table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 list of figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 list of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 current mode controllers with integrated 650 v startup cell/depletion coolmos? . . . . . . . . . 7 1 pin configuration and functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.1 pin configuration for pg-dip-8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.2 pg-dip-8-6 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.3 pin configuration for pg-dso-16/12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.4 pg-dso-16/12 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.5 pin functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2 power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3 startup phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4 pwm section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.4.1 oscillator and jittering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.4.2 pwm latch ff1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.4.3 gate driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.5 current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.5.1 leading edge blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.5.2 propagation delay compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.6 control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.6.1 adjustable blanking window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.6.2 protection modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.6.2.1 auto restart mode during startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.6.2.2 auto restart mode during run mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.6.2.3 floating load protection (flp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.2 operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.3 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.3.1 supply section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.3.2 internal voltage reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.3.3 pwm section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.3.4 control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.3.5 current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.3.6 coolmos? section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5 temperature derating curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 outline dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6.1 outline dimensions of pg-dip-8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6.2 outline dimensions of pg-dso-16/12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 table of contents
led system driver ics icls6x series list of figures data sheet 5 version 1.0, 2011-05-19 figure 1 typical application of icls602xx controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 2 pin configuration of pg-dip-8-6 (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 3 pin configuration of pg-dso-16/12 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 figure 4 block diagram of icls602xx controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 figure 5 power management of icls602xx controllers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 6 soft start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 7 startup phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 8 pwm section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 9 gate driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figure 10 current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 figure 11 leading edge blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 12 peak current overshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 13 overcurrent shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 14 dynamic voltage threshold v csth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 15 adjustable blanking window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 16 auto restart mode during startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 17 auto restart mode during run mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 figure 18 safe operating area (soa) curve for icls6021j . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 figure 19 safe operating area (soa) curve for icls6022j and ICLS6022G . . . . . . . . . . . . . . . . . . . . . . . . 29 figure 20 safe operating area (soa) curve for icls6023j . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 figure 21 soa temperature derating coefficient curve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 figure 22 pg-dip-8-6 (pb-free lead plating plastic dual inline out line) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 figure 23 pg-dso-16/12 (plastic dual inline). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 figure 24 marking for icls602xx controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 list of figures
led system driver ics icls6x series list of tables data sheet 6 version 1.0, 2011-05-19 table 1 pin configuration for pg-dip-8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 2 pin configuration for pg-dso-16/12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 3 protection modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 list of tables
led system driver ics icls6x series data sheet 7 version 1.0, 2011-05-19 current mode controllers with integrated 650 v startup cell/depletion coolmos? product highlights ? constant power ? adjustable blanking window for high -load jumps to increase reliability ? frequency jittering for low emi ? pb-free lead plati ng, rohs-compilant features ? frequency jittering for low emi ? constant power ? 650 v avalanche-rugged coolmos? wit h built-in switchable startup cell ? 67 khz fixed switching frequency ? auto restart mode for overtemperature detection ? auto restart mode for overvoltage detection ? auto restart mode for overload and open loop ? auto restart mode for vcc undervoltage ? floating load protection (flp) mode in the case of open loads ? user-defined soft start ? minimum number of external components required ? maximum duty cycle of 75 % ? overall tolerance of current limiting < 5 % ? internal leading edge blanking ? bicmos technology prov ides a wide vcc range
led system driver ics icls6x series data sheet 8 version 1.0, 2011-05-19 description icls6x series controllers employ a fixed-frequency o peration mode optimized for offline led lighting. the integrated constant power function (patented by in fineon techologies ag) and the frequency jitter enable high performance without inve stment of too much effort in stabilization of the system and filtering in terms of emc. a wide vcc range up to 26 v is provided by use of bicmos technology to cover changes in the auxiliary supply voltage if a cv/cc regulation is implemented on the secondary side. auto restart mode is entered in the case of overtemper ature, vcc overvoltage, output open loop or overload and vcc undervoltage. if an open load event occurs, the devi ce enters the so-called floating load protection (flp) mode to protect the led against destruction. the dimens ions of the transformer and the secondary diode can be reduced owing to the internal precise peak curr ent limitation to yield greater cost efficiency. figure 1 typical application of icls6x series controllers type package marking v ds f osc r dson 1) 1) typ. @ t = 25 c 230vac 15% 2) 2) calculated maximum input power rating at t a = 80 c, t j = 125 c and without copper area as heat sink 110vac15% 2) icls6021j pg-dip-8-6 icls6021j 650 v 67 khz 6.45 ? 12 w 5 w icls6022j pg-dip-8-6 icls6022j 650 v 67 khz 4.70 ? 17 w 9 w ICLS6022G pg-dso-16/12 ICLS6022G 650 v 67 khz 4.70 ? 17 w 9 w icls6023j pg-dip-8-6 icls6023j 650 v 67 khz 1.70 ? 26 w 15 w 20v/350ma pwm control 7 vcc 4 d 5 d 1 ss 2 fb 8 gnd 3 cs icls602xx
led system driver ics icls6x series pin configuration and functionality data sheet 9 version 1.0, 2011-05-19 1 pin configuration and functionality 1.1 pin configuration for pg-dip-8-6 1.2 pg-dip-8-6 package figure 2 pin configuration of pg-dip-8-6 (top view) table 1 pin configuration for pg-dip-8-6 pin symbol function 1 softs soft start 2 fb feedback 3 cs current sense / 650 v 1) depletion coolmos source? 1) @ t j = 110 c 4drain 650v 1) depletion coolmos source? 5drain 650v 1) depletion coolmos source? 6 n.c. not connected 7 vcc controller supply voltage 8 gnd controller ground 1 6 7 8 4 3 2 5 gnd softs fb cs vcc n.c drain drain
led system driver ics icls6x series pin configuration and functionality data sheet 10 version 1.0, 2011-05-19 1.3 pin configuration for pg-dso-16/12 1.4 pg-dso-16/12 package figure 3 pin configuration of pg-dso-16/12 (top view) table 2 pin configuration for pg-dso-16/12 pin symbol function 1 n.c. not connected 2 softs soft start 3 fb feedback 4 cs current sense / 650 v 1) depletion coolmos source? 1) @ t j = 110 c 5drain 650v 1) depletion coolmos source? 6drain 650v 1) depletion coolmos source? 7drain 650v 1) depletion coolmos source? 8drain 650v 1) depletion coolmos source? 9 n.c. not connected 10 n.c. not connected 11 vcc controller supply voltage 12 gnd controller ground 10 11 12 9 vcc softs fb cs n.c n.c gnd n.c. drain drain 8 7 3 2 1 4 drain drain 5 6
led system driver ics icls6x series pin configuration and functionality data sheet 11 version 1.0, 2011-05-19 1.5 pin functionality softs (soft start, auto restart & frequency jittering control) the softs pin combines the soft start function during st artup and the error detection function for auto restart mode. these functions are implemented and can be adjusted by means of an external capacitor at the softs pin connected to ground. this capacitor also provides an adju stable blanking window for high load jumps before the ic enters auto restart mode. in addition, this pin is al so used to control the period of frequency jittering under normal loads. fb (feedback) the information on the regulation is provided by the fb pi n to the internal protection unit and to the internal pwm comparator to control the duty cycle. in the event of an open load event, the device enters the floating load protection (flp) mode. cs (current sense) the current sense pin senses the voltage developed on th e series resistor inserted into the source of the integrated depletion coolmos?. if cs reaches the inter nal threshold of the current limit comparator, the driver output is immediately switched off. the current informat ion is provided to the pwm comparator to realize the current mode. drain (drain of integrated depletion coolmos?) the drain pin provides the connection to th e drain of the internal depletion coolmos?. vcc (power supply) the vcc pin is the positive supply of the ic. the oper ating range of the supply is between 10.3 v and 26 v. gnd (ground) the gnd pin is the common ground of the controller.
led system driver ics icls6x series block diagram data sheet 12 version 1.0, 2011-05-19 2 block diagram figure 4 block diagram of icls6x series controllers current mode control leading edge blanking propagation delay compensation pwm comparator startup cell gate drive soft start power management voltage reference power down reset internal bias control unit auto restart flp protection otp ovp ocp olp gnd cs drain vcc uvlo 5 v ss fb icls602xx
led system driver ics icls6x series functional description data sheet 13 version 1.0, 2011-05-19 3 functional description all values used in the functional description are ty pical values. when calculating the worst cases, the minimium/maximum values listed in electrical characteristics on page 24 have to be considered. 3.1 introduction for icls6x series controllers, a high voltage startup cell is integrated into the system ic, which is switched off once the undervoltage lockout-on threshold of 18 v is exceed ed. this startup cell is part of the integrated depletion coolmos?. the external startup resistor is no longer ne cessary as the startup cell is connected to the drain, resulting in reduced power losses. this increases th e efficiency under light load conditions drastically. the soft start capacitor is also used for providing an adjustable blanking window for high load jumps. the overload detection function is disabled during this window. with this concept, no further external components are necessary to adjust the blanking window. an auto restart mode is implemented in the ic to reduce the average power conversion in the event of malfunction or unsafe operating conditions in the led drives. this feature increases the system?s robustness and safety, which would otherwise lead to a destruction of the led drive. once the malfunction is corrected, normal operation is automatically initiated af ter the next startup phase. together with the soft start capacitor, the feedback can also sense a missin g load, which leads to rising output and auxiliary voltages. this triggers the floating load protection (flp) mo de. when feedback falls below 1.35 v, the soft start voltage begins to rise up to a threshold of 4 v (depends on the c4 value) and the ic is switched into flp mode. the precise internal peak current limitation reduces the costs for the transformer and the secondary diode. the influence of the change in the input voltage on the po wer limitation can be avoided together with the integrated propagation delay compensation circuit. consequently , the maximum power is practically independent of the input voltage required for wide range led drives. there is no need for additional oversizing of the led drives ? e.g., for the transformer or the secondary diode.
led system driver ics icls6x series functional description data sheet 14 version 1.0, 2011-05-19 3.2 power management figure 5 power management of icls6x series controllers the undervoltage lockout function monitors the external supply voltage v vcc . when the led drive is connected to the main line, the internal star tup cell is biased and starts to charge the external capacitor c vcc , which is connected to the vcc pin. the vcc charge current that is provided by the startup cell from the drain pin is 1.05 ma. if v vcc exceeds the on-threshold v ccon (= 18 v), the bias circuit is switched on. then the startup cell is switched off by the undervoltage lockout; therefore no power losses are present due to the connection of the startup cell to the drain voltage. an hysteresis loop is implem ented to avoid uncontrolled ringing at switch-on. switch-off of the controller can only take place after the ac tive mode has been entered and v vcc has fallen below 10.3 v. the maximum current consumption before th e controller is activated is about 300 a. if v vcc falls below the off-threshold v ccoff (= 10.3 v), the bias circuit is switched off and a power-down reset causes discharging of the so ft-start capacitor c softs at pin softs via t4 (see figure 5 ). this ensures in every startup cycle that the voltage ramp at th e softs pin starts at zero. the bias circuit is switched off if auto restart mode is entered. the current consumption is then reduced to 300 a. once the malfunction condition is resolved, this block will then turn ba ck on. the recovery fr om auto restart mode does not require disconnection of the led drive from the ac line. internal bias voltage refer ence power m anagem ent 5v vcc under voltage lockout 18 v 10 . 3 t1 power -down reset softs auto restart m ode startup cell drain
led system driver ics icls6x series functional description data sheet 15 version 1.0, 2011-05-19 3.3 startup phase figure 6 soft start at the beginning of the star tup phase, the ic provides a soft start pe riod during which it controls the maximum primary current by means of dut y cycle limitation. a capacitor c softs in combination with the internal pull-up resistor r softs determines the duty cycle until v softs exceeds 3.2 v. when the soft start begins, c softs is immediately charged up to approx. 0. 8 v by t2. the soft start phase takes place between 0.8 v and 3.2 v. above v softss = 3.2 v there is no longer any duty cycle limitation dc max that is controlled by the comparator c7 since th e comparator c2 blocks the gate g7 (see figure 7 ). this maximum charge current in the very first stage when v softs is below 0.8 v is limited to 0.9 ma. figure 7 startup phase soft -start com par ator soft start & g7 c7 c so fts r so fts t2 3. 25k 5v t3 0.8v softs gate driver 0. 6v x3.2 pwm op cs 3. 2v c2 freq jitter charging current i fj freq jitter discharging current i fj freq jitter control dc max dc 1 dc 2 t t v softs max. soft start phase 0.8 v 3.2 v 4.0 v m ax . star tup phase t1 t2
led system driver ics icls6x series functional description data sheet 16 version 1.0, 2011-05-19 as a consequence of this extra charge stage, there is no delay at the beginning of the startup phase when there is still no switching. fu rthermore, soft start is finished at 3.2 v to have maximum powe r capability even earlier. the duty cycles dc 1 and dc 2 vary according to the mains and the primary inductance of the transformer. the limitation of the primary current by dc 2 is related to v softs = 3.2 v. however, dc 1 is related to a maximum primary current, which is limited by the internal cu rrent limiting function with cs = 1 v. therefore the maximum startup phase is divided into a soft start phase until t1 and a phase fr om t1 to t2 during which maximum power is provided if demanded by the fb signal. 3.4 pwm section figure 8 pwm section 3.4.1 oscillator and jittering the oscillator generates a fix ed frequency with fr equency jittering of 4 % from the fixed frequency (i.e., 2.7 khz for 67 khz) at a jittering period t fj . the switching frequency is f switch = 67 khz. a resistor, a capacitor, a current source and current sink for determining the frequency are integrated. the charging and discharging curr ent of the implemented oscillator capacitor ar e internally trimmed in order to achieve a very accurate switching frequency. the ratio of contro lled charge to discharge current is adjusted to reach a maximum duty cycle limitation of d max =0.75. once the soft start period is over and the ic has entered normal mode, the soft start capacitor is charged and discharged through the internal current source i fj to generate a triangular waveform with a jittering period t fj , which is externally adjustable by means of the soft start capacitor, c softs (see figure 6 ). (1) where k fj is a constant = 4 ms/ f. for example: t fj = 4 ms if c softs = 1 f. oscillator duty cycle max gate driver 0.75 clock & g9 1 g8 pwm section ff1 r s q gate soft start comparator pwm comparator current limiting frequency jitter softs softs fj fj c k t ? =
led system driver ics icls6x series functional description data sheet 17 version 1.0, 2011-05-19 3.4.2 pwm latch ff1 the oscillator clock output provides a set pulse to the pwm latch when initiating the internal coolmos? conduction. after being set, the pwm latch can be reset by the pwm comparator, the soft start comparator or the current limit comparator. in resetting situations the driver is shut down immediately. 3.4.3 gate driver the gate driver is a fast totem pole gate drive designed to avoid cross conduction currents. it is active low at voltages below the undervoltage lockout threshold v vccoff . figure 9 gate driver vcc 1 pw m latch depl . coolmos? gate driver gate
led system driver ics icls6x series functional description data sheet 18 version 1.0, 2011-05-19 3.5 current limiting figure 10 current limiting cycle-by-cycle current limiting realized by the current limit comparator c10 to provide overcurrent detection (see figure 10 ). the source current of the integrated depletion co olmos? is sensed by mean s of an external sense resistor r sense . by means of r sense the source cu rrent is transformed to a sense voltage v sense which is fed to the cs pin. if v sense exceeds the internal threshold voltage v csth the comparator c10 immediately turns off the gate drive by resetting the pwm latch ff1. a propagation delay compensation circuit is added to support immediate shutdown without delay of the integrated internal coolmos? in the case of current limiting. the influence of the ac input voltage on the maximum output power can be suppressed as a result. to prevent the current limiting function from causing di stortions by leading edge spikes, a leading edge blanking circuit is integrated into t he current sense path for the comparator c10 and the pwm op. current lim iting c10 propagation delay com pensation v csth pw m latch ff1 10 k d1 1pf pw m-op cs leading edge blanking 220 ns
led system driver ics icls6x series functional description data sheet 19 version 1.0, 2011-05-19 3.5.1 leading edge blanking each time when the integrated intern al coolmos? is switched on, a leadin g edge spike is generated due to the primary-side capacitances and secondar y-side rectifier reverse recovery time . this spike can cause the gate drive to switch off unintentionally. to avoid premature termination of the switching pulse, th is spike is blanked out with a time constant of t leb = 220 ns. during this time, the gate drive will not be switched off. this is illustrated in figure 11 . figure 11 leading edge blanking 3.5.2 propagation delay compensation in the case of overcurrent detection, switch-off of th e integrated internal coolmos? is delayed due to the propagation delay of the circuit. this delay causes an overshoot of the peak current i peak , which depends on the ratio of di/dt of the peak current (see figure 12 ). figure 12 peak current overshooting the overshoot of signal2 is greater than that of signal 1 due to the steeper rising waveform. this change in the slope varies according to the ac input voltage. a propagat ion delay compensation circuit is integrated to limit the overshoot dependency on di/dt of the rising primary curr ent. this means that the propagation delay between the time the current sense threshold v csth is exceeded and switch-off of th e integrated inernal coolmos? is compensated over temperature within a wide range. t v sense v csth t leb = 220ns t i sense i limit t propagation delay i overshoot 1 i peak1 signal1 signal2 i overshoot 2 i peak2
led system driver ics icls6x series functional description data sheet 20 version 1.0, 2011-05-19 extremely precise current limiting is now possible. for example, i peak = 0.5 a with r sense = 2 ? . without propagation delay compensation the current sense threshold is set to a static voltage level v csth = 1 v. a current ramp of di/dt = 0.4 a/ s (that means, dv sense /dt = 0.8 v/ s), and a propagation delay time t propagation delay = 180 ns then leads to an i peak overshoot of 14.4 %. with propagation delay compensation the overshoot is only about 2 % (see figure 13 ). figure 13 overcurrent shutdown propagation delay compensation is realized by means of a dynamic threshold voltage v csth (see figure 14 ). if the slope is steeper, driver switch-off take s place earlier to compensate for the delay. figure 14 dynamic voltage threshold v csth 0,9 0,95 1 1,05 1,1 1,15 1,2 1,25 1,3 0 0,2 0,4 0,6 0,8 1 1,2 1,4 1,6 1,8 2 with com pensation without com pensation dt dv sense s v sense v v t v csth v os c signal1 signal2 v sense propagation delay max. duty cycle off time t
led system driver ics icls6x series functional description data sheet 21 version 1.0, 2011-05-19 3.6 control unit the control unit contains the function s for the auto restart and floating load protection (flp) modes. the auto restart mode is combined with an adjustable blanking window, which varies according to the value of the external soft start capacitor. the ic avoids entering into either of these two modes accidentally by means of this adjustable blanking window. the window also provides a certain time during which overload detection is delayed. this delay is useful for applications that norma lly work with a low current and occasi onally require a short duration of high current. 3.6.1 adjustable blanking window v softs swings between 3.2 v and 3.6 v after the led drive has settled and s2 is on while s3 is off. this behavior is due to the frequency jittering f unction that makes use of the soft start pin. if overload occurs, v fb exceeds 4.5 v. the auto restart mode cannot be entered as the gate g5 is still blocked by the comp arator c3. however, after v fb has exceeded 4.5 v, the switch s2 is opened and s3 is closed. the external soft start capacitor can then be further charged by the integrated pull-up resistor r softs through the switch s3. the comparator c3 releases the gate g5 once v softs has exceeded 4.0 v. this means that auto restart mode cannot be entered during the charging time of the external capacitor c softs . figure 15 adjustabl e blanking window c3 4.0 v c4 4.5 v & g5 3. 0v s1 control unit auto restart mode r so fts 5v softs fb frequency jitter s2 s3
led system driver ics icls6x series functional description data sheet 22 version 1.0, 2011-05-19 3.6.2 protection modes the ic provides several protection features to increase the led drive?s robustness an d safety. the following table shows the possible system failures and the corresponding protection modes. 3.6.2.1 auto restart mode during startup the vcc voltage is observed by the co mparator c13 if 20.5 v is exceeded. the output of c13 is combined with both the output of c3, which checks for v softs < 4.0 v, and the output of c4, which checks for v fb > 4.5 v. therefore, overvoltage detection can only be active during the soft start phase (v softs < 4.0 v) and if the fb signal is outside the operating range (> 4.5 v). this means any small voltage overshoots of v vcc occurring during normal operation cannot trigger the auto restart mode during startup. figure 16 auto restart mode during startup in order to ensure system reliability and prevent any false activation, a blanki ng time is implemented before the ic can enter auto restart mode during startup. the output of the vcc overvoltage detection circuit is fed into a spike blanking with a time constant of 8.0 s. table 3 protection modes vcc overvoltage auto restart mode during startup overtemperature auto rest art mode during run mode overload auto restar t mode during run mode open loop auto restart mode during run mode vcc undervoltage auto re start mode during run mode floating load protection (flp ) floating load protection mode c3 spike blanking 8.0 us thermal shutdown t j >140 c auto restart mode internal bias control unit c13 20 .5 v vcc c4 4.5v fb 4.0v softs & g12 & g13 ff2 r s q uvlo
led system driver ics icls6x series functional description data sheet 23 version 1.0, 2011-05-19 the other fault detection function which can result in the auto restart mode during startup and has the 8.0 s blanking time is for overtemperature dete ction. this block checks for a juncti on temperature of higher than 140 c for malfunctioning operation. once auto restart mode is entered, the internal bias is switched off in order to reduce the current consumption of the ic as much as possible. in this mode, the average current cons umption is only 300 a as the only working blocks are the reference block and the undervoltage lockou t (uvlo), which controls th e startup cell by switching on/off at v vccon /v vccoff . as there is no longer a self supply provided by the auxiliary winding, vcc starts to drop. th e uvlo switches on the integrated startup cell when vcc falls below 10.3 v. it continues to charge vcc up to 18 v, at which point it is switched off again and the ic enters the startup phase. once all fault conditions have been removed, the ic automatically powers up as usual with a switching cycle at the gate output after the soft start period has elapsed ? hence the name auto restart mode. 3.6.2.2 auto restart mode during run mode in the case of overload or open loop, the fb voltage e xceeds 4.5 v, which is observed by c4. at this time, the external soft start capacitor ca n then be further charged by the integrated pull-up resistor r softs via the switch s3 (see figure 15 ). if v softs exceeds 4.0 v, which is observed by c3, auto restart mode during run mode is activated as both inputs of the gate g5 are high. figure 17 auto restart mode during run mode this charging of the soft st art capacitor from 3.2 v ~ 3.6 v to 4.0 v defines a blanking window, which prevents the system from entering auto restart mode during run mode unintentionally during large load jumps. in this event, fb will rise close to 5.0 v for a short duration be fore the loop regulates fb to less than 4.5 v. in the case of vcc undervoltage ? i.e. , vcc falls below 10.3 v, the ic is tu rned off with the startup cell charging vcc as described earlier in this sect ion. once vcc is charged to above 18 v, the ic starts a new startup cycle. this blanking time window for the floating load pr otection mode can be forced via the external c softs capacitor. 3.6.2.3 floating load protection (flp) the circuit starts up as usual, but a missing load le ads to a rise in the out put and auxiliary voltages. reaching the vcc threshold of 24.5 v (voltage divider rd2/r4 and q2) leads to a reduction in the feedback voltage and hence to reduced output current pulses in order to keep the output voltage below the maximum rating of the components. if the feedback level falls below 1.35 v, the soft start voltage begins to rise up to a threshold of 4 v (depends on the c4 value) and the ic is switched into the flp mode. c3 4.0 v c4 4.5 v & g5 control unit softs internal bias auto restart mode fb
led system driver ics icls6x series electrical characteristics data sheet 24 version 1.0, 2011-05-19 4 electrical characteristics all voltages are measured in respect to ground (gnd, pin 8). the voltage levels are valid if other ratings are not violated. 4.1 absolute maximum ratings absolute maximum ratings are defined as ratings, which when exceeded may lead to destruction of the integrated circuit. for the same reason, ensure that any capacito r to be connected to pin 7 (vcc) is discharged before assembling the application circuit. parameter controller symbol l imit values unit remarks min. max. drain/source voltage icls602xx v ds ?650vt j = 110c pulse drain current, t p limited by max. t j =150c icls6021j i d_puls1 ?1.6a icls6022j i d_puls2 ?2.3a ICLS6022G i d_puls3 ?2.3a icls6023j i d_puls4 ?6.1a avalanche energy, repetitive t ar limited by max. t j =150c 1) 1) repetetive avalanche causes additional power losses that can be calculated as p av =e ar * f icls6021j e ar1 ?0.005mj icls6022j e ar2 ?0.01mj ICLS6022G e ar3 ?0.01mj icls6023j e ar4 ?0.15mj avalanche current, repetitive t ar limited by max. t j =150 c 1) icls6021j i ar1 ?0.3a icls6022j i ar2 ?0.5a ICLS6022G i ar3 ?0.5a icls6023j i ar4 ?1.5a vcc supply voltage icls602xx v vcc -0.3 27 v fb voltage icls602xx v fb -0.3 5.0 v softs voltage icls602xx v softs -0.3 5.0 v cs voltage icls602xx v cs -0.3 5.0 v junction temperature icls602xx t j -40 150 c controllers & coolmos? storage temperature icls602xx t s -55 150 c thermal resistance ? junction ambient icls602xx r thja ? 90 k/w pg-dip-8-6 ? 110 k/w pg-dso-16/12 esd capability icls602xx v esd ? 2 kv human body model 2) 2) according to eia/jesd22-a114-b (discharging a 100 pf capacitor through a 1.5 k series resistor)
led system driver ics icls6x series electrical characteristics data sheet 25 version 1.0, 2011-05-19 4.2 operating range the ic operates as described in the functional descripti on once the values listed here lie within the operating range. 4.3 characteristics 4.3.1 supply section the electrical characteristi cs involve the spread of values guarant eed within the specified supply voltage and junction temperature range t j from ?25 c to 130 c. typical values represent the median values, which are related to 25 c. unless otherwise stated, a su pply voltage of vcc = 18 v is assumed. parameter symbol limit values unit remarks min. max. vcc supply voltage v vcc v vccoff 26 v junction temperature of controller t jcon ?25 130 c max. value limited due to integrated thermal shutdown junction temperature of coolmos? t jcoolmos ?25 150 c parameter symbol limit values unit remarks min. typ. max. startup current i vccstart ? 300 450 av vcc = 17 v vcc charge current i vcccharge1 5.0 ma v vcc = 0 v i vcccharge2 0.55 1.05 1.60 ma v vcc = 1 v i vcccharge3 ?0.88? mav vcc = 17 v leakage current of the startup cell & coolmos? i startleak ?0.250 av drain = 450 v at t j = 100 c supply current with inactive gate i vccsup1 ? 1.7 2.5 ma soft start pin is open supply current with active gate i vccsup3 ?2.53.6mav softs = 3.0 v i fb = 0 supply current in auto restart mode with inactive gate i vccrestart ? 300 ? ai fb = 0 i softs = 0 supply current in floating load protection (flp) mode with inactive gate i vccflp1 ? 500 950 av fb = 2.5 v i softs = 3.0 v i vccflp2 ? 500 950 av cc = 11.5 v v fb = 2.5 v i softs = 3.0 v vcc turn-on threshold vcc turn-off threshold vcc turn-on/off hysteresis v vccon v vcco ff v vcchys 17.0 9.6 ? 18.0 10.3 7.7 19.0 11.0 ? v v v
led system driver ics icls6x series electrical characteristics data sheet 26 version 1.0, 2011-05-19 4.3.2 internal voltage reference 4.3.3 pwm section parameter symbol limit values unit remarks min. typ. max. trimmed reference voltage v ref 4.90 5.00 5.10 v measured at pin fb i fb = 0 parameter symbol limit values unit remarks min. typ. max. fixed oscillator frequency f osc3 58 67 76 khz f osc4 62 67 74.5 khz t j = 25 c frequency jittering range fdelta ? 2.7 ? khz t j = 25 c max. duty cycle d max 0.70 0.75 0.80 min. duty cycle d min 0?? v fb < 0.3 v pwm op gain a v 3.0 3.2 3.4 max. level of voltage ramp v max-ramp ?0.6? v v fb operating range, min. level v fbmin ?0.5? v v fb operating range, max. level v fbmax ? ? 4.3 v cs=1v limited by comparator c4 1) 1) this parameter is not subject to production te sting and is verified by design/characterization feedback pull-up resistor r fb 91422k ? soft start pull-up resistor r softs 30 45 62 k ?
led system driver ics icls6x series electrical characteristics data sheet 27 version 1.0, 2011-05-19 4.3.4 control unit note: the trend of all the voltage leve ls in the control unit is the same regarding the deviation except vvccovp. 4.3.5 current limiting parameter symbol limit values unit remarks min. typ. max. deactivation level for softs comparator c7 by c2 v softsc2 2.98 3.10 3.22 v v fb = 5 v clamped v softs voltage during floating load protection (flp) mode v softsclmp_flp 2.88 3.0 3.12 v activation limit of comparator c3 v softsc3 3.85 4.00 4.15 v v fb = 5 v softs startup current i softsstart ?0.9? mav softs = 0 v overload detection limit for comparator c4 v fbc4 4.33 4.50 4.67 v v softs = 4.5 v floating load protection level for comparator c5 v fbc5 1.23 1.35 1.43 v v softs = 4.5 v floating load protection level for comparator c6a v fbc6a 3.48 3.61 3.76 v after floating load protection mode is entered floating load protection level for comparator c6b v fbc6b 2.88 3.0 3.12 v after floating load protection mode is entered overvoltage detection limit v vccovp 19.5 20.5 21.5 v v fb = 5 v, v softs = 3 v thermal shutdown 1) 1) the parameter is not subject to production test ing and is verified by design/characterization t jsd 130 140 150 c spike blanking t spike ?8.0? s parameter symbol limit values unit remarks min. typ. max. peak current limitation (incl. propagation delay time) (see figure 13 ) v csth 1.01 1.06 1.11 v dv sense / dt = 0.6 v/ s (pg-dip-8-6) 1.02 1.07 1.12 v dv sense / dt = 0.6 v/ s (pg-dso-16/12) peak current limitation during floating load protection mode v cs2 0.27 0.32 0.37 v leading edge blanking t leb ?220? nsv softs = 3.0 v cs input bias current icsbias ?1.0 ?0.2 0 av cs = 0 v
led system driver ics icls6x series electrical characteristics data sheet 28 version 1.0, 2011-05-19 4.3.6 coolmos? section parameter controller symbol li mit values unit remarks min. typ. max. drain/source breakdown voltage icls602xx v (br)dss 600 650 ? ? ? ? v v t j = 25 c t j = 110 c drain/source on resistance icls6021j r dson1 ? ? 6.45 13.70 7.50 17.00 ? ? t j = 25 c t j = 125 c 1) at i d = 0.3 a 1) the parameter is not subject to production test ing and is verified by design/characterization icls6022j ICLS6022G r dson2 ? ? 4.70 10.00 5.44 12.50 ? ? t j = 25 c t j = 125 c 1) at i d = 0.5 a icls6023j r dson3 ? ? 1.70 3.57 1.96 4.12 ? ? t j = 25 c t j = 125 c 1) at i d = 1.5 a effective output capacitance, energy-related icls6021j c o(er)1 ?3.65? pf v ds = 0 v to 480 v icls6022j c o(er)2 ?4.75? pf ICLS6022G c o(er)3 ?4.75? pf icls6023j c o(er)4 ? 11.63 ? pf rise time icls602xx t rise ?30 2) 2) measured in a typical flyback converter application ?ns fall time icls602xx t fall ?30 2) ?ns
led system driver ics icls6x series temperature derating curves data sheet 29 version 1.0, 2011-05-19 5 temperature derating curves figure 18 safe operating area (soa) curve for icls6021j figure 19 safe operating area (soa) curve for icls6022j and ICLS6022G icls6021j icls6022j and ICLS6022G
led system driver ics icls6x series temperature derating curves data sheet 30 version 1.0, 2011-05-19 figure 20 safe operating area (soa) curve for icls6023j figure 21 soa temperature de rating coefficient curve icls6021j icls602xx
led system driver ics icls6x series outline dimensions data sheet 31 version 1.0, 2011-05-19 6 outline dimensions 6.1 outline dimensi ons of pg-dip-8-6 figure 22 pg-dip-8-6 (pb-free lead pl ating plastic dual inline outline) 6.2 outline dimensi ons of pg-dso-16/12 figure 23 pg-dso-16/12 (plastic dual inline) pg-dso-16/12 (plastic dual in-line outline)
led system driver ics icls6x series marking data sheet 32 version 1.0, 2011-05-19 7marking figure 24 marking for icls6x series controllers icls602xx
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