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data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 1 general description the ap1682 is a high performance ac/dc universal input primary side regulation power factor controller for led driver applications. the device uses pulse frequency modulation (pfm) technology to regulate output current while achieving high power factor and low thd. the ap1682 provides accurat e constant current (cc) regulation while removing the opto-coupler and secondary control circuitry. it also eliminates the need of loop compensation circuitry while maintaining stability. the ap1682 achieves excellent regulation and high efficiency, yet meets the requirement of iec61000-3-2 harmonic standard. the ap1682 features low start-up current, low operation current and high efficiency. it also has rich protection features including over voltage, short circuit, over current, over temperature protection etc. the ap1682 is available in soic-8 package. features ? primary side control for output current regulation without opto-coupler and secondary cv/cc control circuitry ? low start-up current ? high power factor and low thd for universal input range ? tight cc regulation performance for universal input mains voltage range ? eliminates control loop compensation circuitry ? built-in accel eration start ? open-load and reload detection ? over voltage and short circuit protection ? over temperature protection ? over current protection ? cost effective total pfc led driver solution applications ? single stage power factor correction power supply for led lighting figure 1. package type of ap1682 soic-8
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 2 pin configuration m package (soic-8) figure 2. pin configuration of ap1682 (top view) pin description pin number pin name function 1 nc no connection 2 vs the rectified input voltage sensing pin. the pin is detecting the instantaneous rectified sine waveform of input voltage 3 vpk the rectified input voltage peak value sensing pin. the pin is detecting the rectified sine waveform peak value of input voltage 4 cs primary current sensing 5 fb this pin captures the feedback voltage from the auxiliary winding. fb voltage is used to control no load output voltage and determine acceleration stop point at start-up phase 6 gnd ground. current return for gate driver and control circuits of the ic 7 out gate driver output 8 vcc supply voltage of gate driver and control circuits of the ic 1 2 3 4 8 7 6 5 nc vs vpk cs fb gnd out vcc
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 3 functional block diagram figure 3. functional block diagram of ap1682
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 4 ordering information ap1682 - circuit type package m: soic-8 package temperature range part number marking id packing type ap1682m-g1 1682m-g1 tube soic-8 -40 to 105 c AP1682MTR-G1 1682m-g1 tape & reel bcd semiconductor's pb-free products, as designated with "g1" suffix in the part number, are rohs compliant and green. g1: green tr: tape & reel blank: tube
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 5 absolute maximum ratings (note 1) parameter symbol value unit power supply voltage v cc -0.3 to 30 v driver output current i out 300 ma voltage at vs, vpk, cs v vs , v pk , v cs -0.3 to 7 v fb input voltage v fb -40 to 10 v operating junction temperature t j 150 oc storage temperature t stg -65 to 150 oc lead temperature (soldering, 10 sec) t lead 300 oc power dissipation at t a =50 c p d 0.65 w thermal resistance (junction-to-ambient) ja 190 c/w esd (machine model) 200 v esd (human body model) 3000 v note 1: stresses greater than those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ?recommended operating co nditions? is not implied. exposure to ?absolute maximum ratings? for extended periods may affect device reliability. recommended operating conditions parameter symbol min max unit power supply voltage v cc 9 21 v ambient temperature t a -40 105 oc
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 6 electrical characteristics v cc =15v, t a =25c, unless otherwise specified. parameter symbol conditions min typ max unit uvlo section start-up threshold v th (st) 18 19 20 minimal operating voltage v opr (min) after turn on 7 8 9 vcc ovp voltage v cc_ovp 28 32 36 v standby current section start-up current i st v cc =v th (st)-0.5v, before start up 20 maximum operating current i cc (max) v vs =v pk =3v 1000 1300 a drive output section output high level voltage v oh i gd-source =20ma v cc =12v 10 v output low level voltage v ol i gd-sink =20ma v cc =12v 1 v output voltage rise time t r c l =1nf 100 140 190 ns output voltage fall time t f c l =1nf 30 60 90 ns output clamp voltage v o-clamp i gd-source =5ma v cc =20v 12 13.5 15 v uvlo saturation voltage v uvlo v cc =0 to v cc?on i sink =10ma 1.1 v vs input section maximum ratio v vs /v pk (max) v vs =v pk =3v 0.8 1 1.2 v minimum ratio v vs /v pk (min) v vs =0v, v pk =3v 0.2 v current sense section minimum on time t on (min) 500 750 1000 ns short circuit protection voltage v socp 3 4 v feedback input section fb pin input leakage current i fb v fb =4v 2 8 a acceleration start threshold v fb (acc) 1.4 1.8 2.2 v cv threshold v fb (cv) 3.2 4.2 5.2 v over voltage protection v fb (ovp) 4.5 6 7.5 v over temperature protection section shutdown temperature 140 o c temperature hysteresis 20 o c
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 7 typical performance characteristics figure 4. supply current vs. supply voltage figure 5. cv threshold vs. supply voltage figure 6. output clamp voltage vs. figure 7. start-up voltage vs. supply voltage ambient temperature 8 1012141618202224262830 3.6 3.8 4.0 4.2 cv threshold (v) supply voltage (v) 0 5 10 15 20 25 30 0 100 200 300 400 500 600 700 800 900 1000 1100 supply current ( a) supply voltage (v) 8 1012141618202224262830 5 6 7 8 9 10 11 12 13 14 output clamp voltage (v) supply voltage (v) -40 -20 0 20 40 60 80 100 120 18.0 18.2 18.4 18.6 18.8 19.0 19.2 19.4 start-up voltage (v) ambient temperature ( o c)
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 8 typical performance characteristics (continued) figure 8. minimal operating voltage vs. figure 9. start-up current vs. ambient temperature ambient temperature figure 10. operating current vs. figure 11. cv threshold vs. ambient temperature ambient temperature -40 -20 0 20 40 60 80 100 120 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 start-up current ( a) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 800 850 900 950 1000 1050 operating current ( a) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 3.00 3.25 3.50 3.75 4.00 4.25 4.50 cv threshold (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 7.8 7.9 8.0 8.1 8.2 8.3 minimal operating voltage (v) ambient temperature ( o c)
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 9 typical performance characteristics (continued) -40-20 0 20406080100120 1.0 1.5 2.0 2.5 3.0 fb input leakage current ( a) ambient temperature ( o c) figure 12. fb input leakage current vs. ambient temperature typical application figure 13. typical application of ap1682
data sheet single stage primary side regulation pfc controller for led driver ap1682 dec. 2011 rev. 1. 1 bcd semiconductor manuf acturing limited 10 mechanical dimensions soic-8 unit: mm(inch) r0.150(0.006)
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing co., ltd. 800 yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd., shenzhen office unit a room 1203, skyworth bldg., gaoxin ave.1.s., nanshan district, shenzhen, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corp. 30920 huntwood ave. hayward, ca 94544, usa tel : +1-510-324-2988 fax: +1-510-324-2788 - headquarters bcd semiconductor manufacturing limited no. 1600, zi xing road, shanghai zizhu sc ience-based industrial park, 200241, china tel: +86-21-24162266, fax: +86-21-24162277 bcd semiconductor manufacturing limited important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com bcd semiconductor manufacturing limited

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