unisonic technologies co., ltd 8561 preliminary cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2010 unisonic technologies co., ltd qw-r502-444.a power factor corrector ? description the utc 8561 is a power factor corrector, which can work in wide input voltage range applicat ions (from 85v ~ 265v) with an excellent thd. it has very low start up current (about 50 ua) and a disable function on the zcd pin, 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 = 25c) internal reference voltage * output overvoltage protection * very low power start-up current * very low operating supply current * current sense filter on chip * disable function (with zcd pin) * transition mode operation * gate driving current: 400ma ? ordering information ordering number lead free plating halogen free package packing 8561l-d08-t 8561g-d08-t dip-8 tube
8561 preliminary cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-444.a ? pin configuration inv comp mult cs vcc gd gnd zcd 1 2 3 45 6 7 8 ? 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.
8561 preliminary cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-444.a ? block diagram - + voltage regulator over-voltage detection r q s 40k cs 5pf + - multiplier mult v cc gd d r i v e r starter disable zcd 2.1v 1.6v v ref2 r2 20v v cc r1 internal supply 7v uvlo zero current detector - + inv 2.5v comp gnd 3 2 1 4 5 6 7 8
8561 preliminary cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-444.a ? absolute maximum ratings (ta=25c, 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 power dissipation p d 0.65 w junction temperature t j 150 c storage temperature t stg -55 ~ +150 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (v cc =14.5v, ta=-25c ~ 125c, 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) 11 12 13 v turn-off threshold 8 v cc(off) 8.7 9.5 10.3 v hysteresis 8 hys 2.2 2.5 2.8 v supply current section start-up current 8 i start-u before turn-on (v cc =11v) 20 50 90 a quiescent current 8 iq 2.6 4 ma c l =1nf @ 70khz 4 5.5 ma operating supply current 8 i cc in ovp condition v pin1 =2.7v 1.4 ma 8 v pin5 150ma, v cc >v cc off 1.4 ma quiescent current 8 iq v pin5 150mv, v cc 8561 preliminary cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-444.a ? electrical characteristics (cont.) parameter pin symbol test conditions min typ max unit zero current detector input threshold voltage rising edge (note) 5 2.1 v hysteresis (note) v zcd 0.3 0.5 0.7 v upper clamp voltage 5 v zcd i zcd =20 a 4.5 5.0 6.8 v upper clamp voltage 5 v zcd i zcd =3ma 4.7 5.1 7 v lower clamp voltage 5 v zcd i zcd =3ma 0.3 0.65 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 200 300 mv restart current after disable 5 i zcd v zcd v coff -200 -300 a output section i gdsource =200ma 1.2 2 v i gdsource =20ma 0.7 1 v i gdsink =200ma 1.5 v dropout voltage 7 v gd i gdsink =20ma 0.3 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 5 10 ma output overvoltage section ovp triggering current 2 i ovp 35 40 45 a static ovp threshold 2.1 2.25 2.4 v restart timer start timer t start 70 150 400 s note: parameter guaranteed by design, not tested in production.
8561 preliminary cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-444.a ? typical application circuit ( 80w, wide-range mains) fuse 4a/250v vac (85v ~ 265v) + bridge 4 1n4077 c1 400v r10 10k c2 22 f 25v c7 10nf 240k r3(*) d3 1n4150 d2 1n5248b 12nf r2 100 c6 r1 68k t 1 f r5 10 r6(*) 0.41 1w r8 6.34k 1% mos stp8na50 c5 47 f 450v v out =400v p o =80w + r7(*) 998k d1 byt13-600 8 3 5 21 7 4 6 utc 8561 transformer t: core thomson-csf b1et2910a(etd291610mm)or equivalent (orega 473201a8) primary 90t of litz wire 100.2mm secondary 7t of #27 awg (0.15mm) gap 1.25mm for a total primary inductance of 0.8mh - ntc r9(*) 1.24m - 1 f c3 r3 = 2 120k ? r6 = 0.82 ? /2 r7 = 2 499k ? , 1% r9 = 2 620k ? (*) 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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