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versatile cost effective green pwm controller ap3103 preliminary datasheet 1 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited general description the ap3103 is a low startup current, current mode pwm controller with green-mode power-saving opera- tion. the pwm switching fr equency at normal opera- tion is externally programmable and is trimmed to a tigh range. the dithering of frequency will improve emi feature. when the load decreases, the frequency will reduce and when at a very low load, the ic will enter the skip mode to minimize switching loss. about 20khz frequency switching is aviode the audi- ble noise as well as reduding the standby loss. the ap3103 features a lot of functions such as the leading-edge blanking (leb) of the current sensing, internal slope compensation and several protection functions including cycl e-by-cycle current limit (ocp), vcc over voltage protection (vovp), otp, olp protection. this ic is available in sot-23-6 and dip-8 packages. features bi-cmos process with excellent performance very low start-up current:( < 1 5a) current mode control non-audible-noise green-mode control leb (leading-edge blanking) on cs pin internal slope compensation frequency fold back for high average effi- ciency soft switching for reducing emi useful pin fault protection: cs pin floating ri pin short to ground ri pin floating fb/opt-coupler open/short comprehensive system protection feature: vcc over voltage protection (vovp) over temperature protection (otp) over load protection (olp) mini size with packages applications switching ac-dc adapter/charger atx/btx auxiliary power set-top box(stb) power supply open frame switching power supply figure 1. package types of ap3103 sot-23-6 dip-8
versatile cost effective green pwm controller ap3103 preliminary datasheet 2 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited pin configuration pin number pin name function sot-23-6 dip-8 1 8 gnd signal ground. current return for driver and control circuits 2 7 fb (comp) feedback. directly connected to the opto-coupler 3 5 ri set the bias current to de termine the normal switching frequency 4 4 sense current sense 5 2 vcc supply voltage of driver and control circuits 6 1 gate gate driver output 3, 6 nc no connection. these pins are not internally connected pin description (sot-23-6) gate gnd k package figure 2. pin configuration of ap3103 (top view) (dip-8) p package 1 2 3 4 8 7 6 5 gate fb gnd ri nc vcc nc sense 1 2 34 5 pin 1 dot by marking 6 fb ri vcc sense
3 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet versatile cost effective green pwm controller ap3103 functional block diagram figure 3. functional block diagram of ap3103 gnd gate sense driver 17.5v osc fb ocp 0.85 v 2 4 1 pwm olp 1.1v 6 vcc 5 28v ovp ri 3 o/s protection uvlo 15v internal bias &vref 0.6v 250ns leb olp otp ovp focp line compensation qb d clk rb dff otp 140 vcc soft start vdd 35.5v 8.8v
versatile cost effective green pwm controller ap3103 preliminary datasheet 4 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited ordering information circuit type package k: sot-23-6 g1: green ap3103 - tr: tape and reel blank: tube p: dip-8 package temperature range part number marking id packing type sot-23-6 -40 to 85 o c ap3103ktr-g1 ghl tape & real dip-8 -40 to 85 o c AP3103P-G1 AP3103P-G1 tube bcd semiconductor's products, as designated with "g1" suffix in the pa rt number, are rohs compliant and green.
5 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet versatile cost effective green pwm controller ap3103 parameter symbol value unit power supply voltage v cc 30 v gate output current i o 3 00 ma input voltage to fb, sense pin v fb, v sense -0.3 to 7 v thermal resistance junction to ambient ja sot-23-6 250 o c/w dip-8 100 power dissipation and thermal charac- teristic, sense at t a <25 o c p d sot-23-6 500 mw dip-8 1250 operating junction temperature t j -40 to150 o c storage temperature range t stg 150 o c esd (human body model) 3000 v esd (machine model) 300 v note 1: stresses greater than those listed under "a bsolute 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 conditions" is not implied. exposure to "absolute max- imum ratings" for extended periods may affect device reliability. recommended operating conditions parameter symbol min max unit supply voltage v cc 10 25 v ambient operating temperature range t a -40 85 o c absolute maximum ratings (note 1)
versatile cost effective green pwm controller ap3103 preliminary datasheet 6 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited parameter symbol conditions min typ max unit supply voltage (vcc pin) start-up current i start-up v cc =14.8v 5 15 a operating supply current i cc v fb =0v, c l =1nf, r ri =100k ? 123 ma v fb =3v, c l =1nf, r ri =100k ? 0.65 1.65 2.65 uvlo (on) 14 15 16 v uvlo (off) 7.8 8.8 9.8 v vcc ovp 27 28 29 v vcc clamp i cc =5ma 34 35.5 37 v pwm section/oscillator section maximum duty cycle 70 75 80 % minimum duty cycle 0 oscillation frequency r ri =100k ? 60 65 70 khz green mode frequency r ri =100k ? 22 khz frequency temperature stability -40 o c to 85 o c 5% frequency voltage stability v cc =12 to 30v 3% frequency dithering 6% current sense section (sense pin) maximum sense voltage v cs v fb =3.3v, r ri =100k ? 0.800 0.850 0.900 v leb time of sense 150 250 350 ns delay to output 50 150 250 ns soft-start time 0.5 ms feedback input section (fb pin) the ratio of input voltage to current sense voltage 2.533.5v/v input impedance 3 4.5 6 k ? source current v fb =0v -0.5 -1 -1.5 ma input voltage for zero duty 1.5 v output section (gate pin) output low level i o =20ma, v cc =12v 1 v output high level i o =20ma, v cc =12v 8 v output clamping 16 17.5 19 v rising time c l =1nf, v cc =13v 120 220 320 ns falling time c l =1nf, v cc =13v 30 50 90 ns electrical characteristics v cc =16v, t a =25 o c, unless otherwise specified.
7 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet versatile cost effective green pwm controller ap3103 electrical characteristics v cc =16v, t a =25 o c, unless otherwise specified. parameter symbol conditions min typ max unit over temperature protection section shutdown temperature 140 o c temperature hysteresis 20 o c delay time section delay 1 of protection olp 35 ms delay 2 of protection vcc ovp 25 s
versatile cost effective green pwm controller ap3103 preliminary datasheet 8 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited typical performance characteristics figure 4. start-up voltage vs. ambient temperature figure 5. shutdown voltage vs. ambient temperature figure 6. start-up current vs. ambient te mperature figure 7. operation cu rrent vs. 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 start-up current ( a) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 140 13.6 13.8 14.0 14.2 14.4 14.6 14.8 15.0 15.2 15.4 start-up voltage (v) ambient temperature ( o c) -60 -40 -20 0 20 40 60 80 100 120 140 160 7.8 8.0 8.2 8.4 8.6 8.8 9.0 9.2 9.4 9.6 9.8 shutdown voltage (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 140 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 operation current (ma) ambient temperature ( o c)
9 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet versatile cost effective green pwm controller ap3103 typical performance ch aracteristics (continued) figure 8. vcc ovp vs. ambient temperature figure 9. f osc vs. ambient temperature -40 -20 0 20 40 60 80 100 120 140 27.4 27.6 27.8 28.0 28.2 28.4 vcc ovp (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 140 55.0 57.5 60.0 62.5 65.0 67.5 70.0 72.5 75.0 f osc (khz) ambient temperature ( o c)
versatile cost effective green pwm controller ap3103 preliminary datasheet 10 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited operation description the ap3103 is specifically designed for off-line ac- dc power supply used in lcd monitor, notebook adapter and battery charger ap plications. it offers a cost effective solution with a versatile protection function. start-up current and uvlo the start-up current of ap31 03 is optimized to realize ultra low current (5 a typical) so that vcc capacitor can be charged more quickly. the direct benefit of low start-up current is the availa bility of using large start- up resistor, which minimizes the resistor power loss for high voltage ac input. an uvlo comparator is included in ap3103 to detect the voltage on the vcc pin. it ensures that ap3103 can draw adequate energy fr om hold-up capacitor during power on. the turn-on threshold is 15v and the turn- off threshold is 8.8v. oscillator the oscillation frequency is programmed by the value of resistor r1, connected from pin ri to ground. the resistor will make a constant current source to determine the oscillation frequency by charging and discharging an internal capacitor. normally, ri pin should not be placed where exists too much noise, as the disturbance may make the ic work abnormally. the oscillation frequency can be expressed as: the recommended oscillation frequency is 50 to 100 khz from the emi consideration. current sense comparator and pwm latch the ap3103 operates as a current mode controller; the output switch conduction is initiated by every oscillator cycle and is terminated when the peak inductor current reaches the threshold level established by the fb pin. the inductor current signal is converted to a voltage signal by inserting a reference sense resistor r s . the inductor current under normal operating conditions is controlled by the voltage at fb pin, the relation between peak inductor current (i pk ) and v fb is: leading - edge blanking a narrow spike on the lead ing edge of the current waveform can usually be observed when the power mosfet is turned on. a 250ns leading-edge blank is built-in to prevent the false-triggering caused by the turn-on spike. during this period, the current limit comparator is disabled and the gate driver can not be switched off. fb pin and short circuit protection this pin is normally connected to the opt-coupler and always paralleled wi th a capacitor for loop compensation. when the voltage at this pin is great than 4.2v (such as output short to ground or the opt- coupler is broken) and lasts for about 25ms, the ic will enter the protection mode. fo r ap3103, the system will enter hiccup mode to wait the vcc decreasing to low uvlo level, then the ic will try to restart until the failure removed. and when this voltage is less than 1.5v, the ic will stop the drive pulse immediately. therefore, this feature can be used for short circuit protection, which makes the systemimmune from catastrophic failure. normal ly, output short makes the vfb value to the maximum because the opt-coupler is cut off. system protection and pin fault protection the ap3103 provides versatile system and pin fault protections. the ocp compar ator realizes the cycle- by-cycle current limiting (ocp).in universal input line voltage, the ic realizes the constant over load protection (olp). vcc over voltage protection can be applied as the primary ovp or opt-coupler broken protection. the ap3103 also has pin fault connection protection including floating and short connection. the floating pin protection include the ri, sense, fb, etc; the short pin protection includes the ri pin short protection. when these pins are floated or ri pin is shorted to ground, pwm switching will be disabled, thus protecting the power system. ) ( ) ( 1 6500 khz k r f ? s fb pk r v i 3 / ) 8 . 0 ( ? =
11 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet versatile cost effective green pwm controller ap3103 figure 10. typical application of ap3103 typical application ~ ~ + - vcc gnd out fb cs ri ~ az431 ap3103 l2 t1 r13 c7 c6 c8 r14 r15 r16 r17 r18 c9 u2 c10 r12 r11 r10 r9 r8 c5 r6 r19 c4 r5 r4 c2 c1 vr1 u1 ntc r2 r3 f1 r7 c3 c11
versatile cost effective green pwm controller ap3103 preliminary datasheet 12 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited mechanical dimensions sot-23-6 unit: mm(inch) 2.820(0.111) 3.020(0.119) 2.650(0.104) 2.950(0.116) 1.500(0.059) 1.700(0.067) 0.950(0.037)typ 1.800(0.071) 2.000(0.079) 0.300(0.012) 0.400(0.016) 0.700(0.028)ref 0.100(0.004) 0.200(0.008) 0 8 0.200(0.008) 0.300(0.012) 0.600(0.024) 0.000(0.000) 0.100(0.004) 0.900(0.035) 1.300(0.051) 1.450(0.057) max 123 4 5 6 pin 1 dot by marking
13 feb. 2010 rev. 1. 0 bcd semiconductor manufacturing limited preliminary datasheet versatile cost effective green pwm controller ap3103 mechanical dimens ions (continued) dip-8 unit: mm(inch) 4 6 r0.750(0.030) 0.254(0.010)typ 0.130(0.005)min 8.200(0.323) 9.400(0.370) 0.204(0.008) 0.360(0.014) 7.620(0.300)typ 4 6 5 0.700(0.028) 9.000(0.354) 9.400(0.370) 3.710(0.146) 4.310(0.170) 3.000(0.118) 3.600(0.142) 0.360(0.014) 0.560(0.022) 2.540(0.100) typ 6.200(0.244) 6.600(0.260) 3.200(0.126) 3.600(0.142) 0.510(0.020)min 3.000(0.118) depth 0.100(0.004) 0.200(0.008) 1.524(0.060) typ mechanical dimens ions (continued) note: eject hole, oriented hole and mold mark is optional.
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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