unisonic technologies co., ltd l8561 preliminary linear integrated circuit www.unisonic.com.tw 1 of 5 copyright ? 2011 unisonic technologies co., ltd qw-r502-444.c power factor corrector ? description the utc l8561 is a power factor corrector, which can work in wide input voltage range applications (from 85v ~ 265v) with an excellent thd. it has very low start up current (about 20 ua) and a disable function on the zcd pi n, which is designed to keep lower current consumption in stand by mode. the device is operating in transit ion mode, and is able to drive a power mos or igbt with a 400ma current for sourcing and sinking. ? features * 1% precision (@ t j = 25 ) internal reference voltage * output overvoltage protection * very low power start-up current * current sense filter on chip * disable function (with zcd pin) * transition mode operation * gate driving current: 400ma * 15v gate clamped ? ordering information ordering number lead free halogen free package packing L8561L-D08-T l8561g-d08-t dip-8 tube l8561l-s08-r l8561g-s08-r sop-8 tape reel
l8561 preliminary linear integrated circuit unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-444.c ? pin configuration ? pin description pin no pin name description 1 inv inverting input of the error amplifier. 2 comp output of t he error amplifier. 3 mult input of t he multiplier stage. 4 cs input of the cu rrent sense stage. 5 zcd input of the zero current detection . 6 gnd ground. 7 gd gate driver output. 8 v cc voltage supply. ? block diagram +
l8561 preliminary linear integrated circuit unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-444.c ? absolute maximum rating (ta=25 , unless otherwise specified) parameter symbol ratings unit analog inputs & outputs inv, comp mult -0.3 ~ 7 v current sense input cs -0.3 ~ 7 v iq+iz (i gd = 0) iv cc 30 ma output totem pole peak current (2ms) i gd 700 ma zero current detector zcd 50 (source) -10 (sink) ma ma sop-8 1 w power dissipation @ ta=50 dip-8 p tot 0.65 w junction temperature t j 125 operating temperature t opr -20 ~ +85 storage temperature t stg -40 ~ +150 note: absolute maximum ratings are those values beyond which the device could be permanently damaged. note: absolute maximum ratings are stre ss ratings only and functional device operation is not implied. ? electrical characteristics (ta=-25 ~ 125 ,v cc =14.5v, unless otherwise specified) parameter pin symbol test conditions min typ max unit supply voltage section operating range 8 v cc after turn-on 11 18 v turn-on threshold 8 v cc on 14 15.3 16.5 v turn-off threshold 8 v cc off 7.2 7.9 8.7 v hysteresis 8 hys 6.5 8.3 v supply current section start-up current 8 i start-u v ccon -1v 30 50 a quiescent current 8 iq 6 9 ma c l =1nf @ 70khz 10 15 ma operating supply current 8 i cc in ovp condition v pin1 =2.7v 6.8 ma 8 v pin5 150mv, v cc >v cc off 6 ma quiescent current 8 iq v pin5 150mv, v cc l8561 preliminary linear integrated circuit unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-444.c ? electrical characteristics (cont.) parameter pin symbol test conditions min typ max unit current sense comparator current sense reference clamp 4 v cs v mult =2.5v v comp =upper clamp voltage 1.6 1.7 1.8 v input bias current 4 i cs v os =0 -0.05 -1 a delay to output 4 t d(h-l) 200 450 ns zero current detector input threshold voltage risin g edge 5 (note 1) 2.1 v hysteresis v zcd (note 1) 0.4 0.6 0.8 v upper clamp voltage 5 v zcd i zcd =20 a 5.9 6.5 7 .3 v upper clamp voltage 5 v zcd i zcd =3ma 6.1 6.6 7.5 v lower clamp voltage 5 v zcd i zcd =3ma 0.3 0.7 1 v sink bias current 5 i zcd 1v v Q zcd 4.5v Q 2 a source current capability 5 i zcd -3 -10 ma sink current capability 5 i zcd 3 10 ma disable threshold 5 v dis 100 200 300 mv restart current after disable 5 i zcd v zcd v coff -20 -50 a output section i gd(sourcr) =200ma 1.2 2 v i gd(sourcr) =20ma 0.8 1.2 v i gd(sink) =200ma 1.2 1.9 v dropout voltage 7 v gd i gd(sink) =20ma 1.2 v output voltage rise time 7 t r c l =1nf 40 100 ns output voltage fall time 7 t f c l =1nf 40 100 ns igd sink current 7 i gd (off) v cc =3.5v, v gd =1v 10 40 ma output overvoltage section ovp triggering current 2 i ovp 30 40 50 a static ovp threshold 2.25 2.4 2.55 v restart timer start timer t start 70 130 300 s note: 1. parameter guaranteed by design, not tested in production.
l8561 preliminary linear integrated circuit unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-444.c ? typical application circuit (150w, wide-range mains) zcd comp inv gd cs gnd mult vcc utc l8561 - + ~ v ac (90v~264v) f1 3 2.0a/250v 1 2 4 + - bd1 2kbp06m c4 1 f/ 400v r1 620k/ 1206 r6 620k/ 1206 r14 10k/ 0805 c8 10nf/ 0805 c6 22 f/50v zd1 zd18.0 64 8 3 52 1 7 r2 62k/1206 r7 56k/1206 r3 110/ 0805 c1 10nf/0805 d2 1n4148 t1 pfc choke 11 7 2 6 r5 10k/0805 c3 1 f/0805 r13 10/1206 d3 1n4148 q1 12n65 r16 0.47/1w r17 0.47/1w r11 19k/ 0.25w r12 19k/ 0.25w c5 120 f/ 450v r9 750k/1206 r4 750k/1206 d1 byc5-600 r8 22k/1206 utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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