high voltage led constant source ic ha220xxp b general description constant current source ic is a kind of power supply conv erter with a constant current outp ut. this constant current sour ce ic is mainly applied to supply po wer of leds in series. when the input voltage is 220vac, with red led, the number of le ds in series can up to 110. the i nput vol t age i s 85-240vac,output a constant current that the va lue can be preset by peripheral resistance. the peripheral circuits is concise, the whole circuits structure is very small in volume wi th no inductance and transformer, which can be set in led lamps and lanterns with a small volume. features ? wide input range 85 to 240vac ? >95% efficiency(test conditon: with resistance load, between ic two ends) ? range of output constant current: 10ma to 80ma(preset by peripheral circuit) ? the number of leds series: n 0.9vindc/vf. n is the number of leds in series single circuit ;vindc is the voltage of commutate input; vf is forward voltage dr of each led ? precision 2.5% 5% 10% ? good property of emc ? range of temperature -40 85 ? good stability, high performance cost ratio, and the usage perfo rmance parameter won't change in large range working voltage and temperature ? package: dip-10 xi?an jiyuan instrument co.,ltd applications ? led lighting device ? electronic display ? industry lighting facility ? decorative lighting facility and bulb ? lcd plane display backlight ? other led driver that needn't isolated from power supply block diagram page 01 out- cp rt in + gnd bc out + rs en over temperature protection current signal adjustment po we r s wit ch sy nch ron izat io n sw itch enable control create work voltage sensitivity setting
xi?an jiyuan instrument co.,ltd page 02 high voltage led constant source ic ha220xxpb typical applications rt 8 in+ 6 o ut + 5 en 1 rs 2 o ut - 3 cp 9 g nd 10 bc 4 nc 7 ha220xxpb fu r1 r2 + c2 1~4.7u/ 400v + c1 ~85- 220v n l vi n a c r3 10k vi n dc remark: this type high power constant current source of ha220xxpb ic comes from the old type ha220x xp ic . besides current preset resistance r1 and operating resistance r2 number revision, other parameters are in v a r ia b le . typical temperature diagram type temperature curve (set current=20ma) t c 19 21 0 80 60 40 20 -2 0 20ma i led (ma) -4 0 pin descroptions pin symbol definition pin symbol definition 1 en enable port 2 rs start-up resistance 3 out- negative output 4 bc compensatory resistance 5 out+ positive output 6 in+ positive input 7 nc no use 8 rt regulate current 9 cp smoothing 10 gnd ground explain 1. vf 0.9vin, vf is forward voltage drop of each led. 2. for the type HA22002PB(20ma)ic the to tal voltage drop of a led string more than 30v is better. that means the nu mber of leds in series need more than 16pcs in a loop (the re d led work voltage is 1.8v ).for the type ha22004pb(40m a ?
xi?an jiyuan instrument co.,ltd page 03 high voltage led constant source ic ha220xxpb ha22006pb(60ma) ic the total voltage drop of a led string more than 90v is better.if there are two or several led string merging, each string should with the same number of leds. 3. the best range of output cons tant current source: 150v-180v. 4 current regulating resistance r1 the relationship of current and resistance 5. resistance r2:resistance value=0.8*input voltage*1k ? (range of resistance , power value: 1w.example:when vin=220v ,r2=220*0.8=180 k (it's better for the ic away from the resistances r1 and r2 when design.) 6. r3 is the current compensator y resistance, recommend use 10 k resistance . 7. c2: filter capacitance(the recommendation is ) 8. c1:smoothing capacitance(for the types of ha22002p and ha22004p, peripheral capacitance c1 is 100uf /16v,and ha22006p, peripheral capacitanc e c1 is 100uf/25v) 9. warning note: don't use filter c apacitance follow the bridge circuit. 10. the method of how to count out the most number of led it can bring with example: suppose input voltage vina c=220v,then vindc = 220 v0.9 = 198 v. for example drive white led light, su ppose each white light vr=3.3v, thus, it ca n bring 198v/3.3v=60.if the electrical ne twork voltage is low when voltage supply , in order to ensure ic has enough adjust ment scope to drive the led to be able t h normal work , this time above mat hematical formula while coefficient 0.9. vf = 198v 0.9 =178v. now the most numb er of white led light it can drive ca n achieve 178v/3.3v=54. this computat ional method has considered viac15% range of variation. if the ac input is under the stabilzed voltage, the quantity of leds can be added more. 5) 1/16w 1/8w 14.7uf/400v ? . ? 11. the first pin is enable port, effectual when vacant and turn off when on high le v this pin can not connect with low level. the follow ing circuit diagrams are two modes to enable the ic . fig (a) is for segregated mode enabling, fig (b) is for un-segregated mode enabling. remark : when using en pin to control the circ uit on or off, add an inductance to li m the current ascender (di/dt). red led obvi ous in particular under this protect effe c its value can be 1 to 2.2mh, and the ma x permissible current should be more 1.3 times actual current across the led load. 20ma (HA22002PB) 47 /0.5w the current range : 20ma 20% current increase 1ma,resistance decrease 2 current decrease 1ma,resistance increase 2 40ma (ha22004pb) 24 /1w the current range: 40ma 20% current increase 2ma, resistance decrease1 current decrease 2 ma, resistance increase1 60ma (ha22006pb) 15 /1-2 w the current range: 60ma 20% current increase 3ma, resistance decrease 0.6 current decrease 3 ma, resistance increase 0.6
xi?an jiyuan instrument co.,ltd page 04 high voltage led constant source ic ha220xxpb 1 4 2 3 pc817 rt 8 in+ 6 out+ 5 en 1 rs 2 out- 3 cp 9 gnd 10 bc 4 nc 7 ha220xxpb fu r1 r2 + c2 1~4.7u/400v + c1 ~85-220v n l v i n a c r3 10k v i n d c l 1 ~ 2.2mh fig (a) segregated mode enabling optical coupler closed, ic is on work; while open it the ic inner circuit will disconnect and won't work. v1 r4 rt 8 in+ 6 ou t+ 5 en 1 rs 2 out - 3 cp 9 gnd 10 bc 4 nc 7 h a220xx pb fu r1 r2 + c2 1~4.7 u/400v + c1 ~85- 220v n l vin ac r3 10k vi n d c l 1- 2 .2mh contr ol s ignal fig (b)un-segregated mode enabling en: enable port, vacant is effectual; high lev el is off. this pin forbid to connect l o level. the transistor v1 recommend ty pe 9301 or 8050, and r4 recommend val u 4.7k or 5.1k when r4 input voltage is 5v.note: this un-segregated mode enabli can only be used when control signal an d constant source ic can share the sam ground pole. type informations h a 2 2 xxx pb dip encapsulation three figure10ma=the most value of constant current(ma) two figure10v=working voltage o f i c ac input c onstant current source i c
xi?an jiyuan instrument co.,ltd page 05 high voltage led constant source ic ha220xxpb package informations symbol a a1a2d e e1 dimensions(mm) 4.20-4.30 0.05-0.15 4.00-4.10 11.65-11.80 7.25-7.30 6.55-6.75 symbol eb b l e dimensions(mm) 8.50-9.50 050-0.60 3.50-4.55 2.50-2.60 15-20
|
