View AP3105NR_7764690.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 1 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated cost effective green pwm controller description the ap3105na/nv/nl/nr is a low startup current, current mode pwm controller with green-mode power-saving operation. the pwm switching frequency at normal operation is set with 65khz typically and the dithering of frequency will also improve the emi feature. when the load decreases, the frequency will reduce and when at a very low load, the ic will enter the ?burst mode? to minimize switching loss. about 20khz frequency switching is to avoid the audible noise as well as reducing the standby loss. the skip mode point can be adjusted through the external resistor connect ed to the current sense resistor. the ap3105na/nv/nl/nr features a lot of functions such as the leading-edge blanking (leb) of the current sensing, internal slope compensation and several protecti on functions including cycle-by- cycle current limit (ocp), vcc ov er voltage protection (vovp), otp and olp protection. the versatile latch function can be set by the customer through few components. this ic is available in sot-23-6 package. features ? very low start-up current ? current mode control ? non-audible-noise green-mode control ? skip mode adjustable ? internal slope compensation ? soft start during startup process ? frequency fold back for high average efficiency ? secondary short winding protection with focp ? soft switching for reducing emi ? vcc maintain mode ? latch function for otp/ovp ? useful pin fault protection: sense pin floating ctrl pin short to ground fb/opto-coupler open/short ? comprehensive system protection feature: vcc over voltage protection (vovp) over load protection (olp) ? mini size with packages ? pin to pin compatible with ap3103 pin assignments k package (sot-23-6) applications ? switching ac-dc adapter/charger ? atx/btx auxiliary power ? set-top box(stb) power supply ? open frame switching power supply 1 2 34 5 pin 1 mark 6 gnd fb ctrl gate vcc sense
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 2 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated typical applications circuit ~ ~ + - vcc gnd gate fb sense ctrl ~ az431 ap3105na/ nv/nl/nr l2 t1 r13 c7 c6 c8 r14 r15 r16 r17 r18 c9 u2 c10 r12 r11 r10 r9 c5 r6 r19 c4 r5 r4 c2 c1 vr1 u1 ntc r2 r3 f1 r7 c3 c11 ntc r8 pin descriptions pin number pin name function 1 gnd signal ground. current return for driver and control circuits 2 fb feedback. directly connected to the opto-coupler 3 ctrl latch trigger if this pin voltage drops below a thre shold or over another threshold, leave ctrl pin open if this function is not needed. connecting a ntc thermistor to gnd can achieve otp protection 4 sense current sense 5 vcc supply voltage of driver and control circuits 6 gate gate driver output
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 3 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated functional block diagram gnd gate 250 ns leb driver 13 v q d clk rb dff osc with fr equency jitter 0.95v vcc_ovp olp vcc 32 v 28 v vcc_ovp ovp uvlo uvlo 15. 5v 8.6v inter nal bias 0.5 v auto recovery protection ap3105 na/nv/nl/nr 100 u a line compensation fb r 2r burst pw m 1. 25v soft start 0.5v ctrl_ h 1. 8v latch -off protection ocp 64m s delay olp focp focp 2.5 v 3. 6v 0.6 v 10 k ctrl_h ctrl_l ctrl_l 1 2 5 3 6 ctrl sense 4
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 4 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated absolute maximum ratings (note 1) symbol parameter rating unit v cc power supply voltage 30 v i o gate output current 350 ma v fb , v sense , v ctrl input voltage to fb, sense, ctrl -0.3 to 7 v ja thermal resistance (junction to ambient) 250 c/w p d power dissipation at t a < +25 c 500 mw t j operating junction temper ature -40 to +150 c t stg storage temperature range +150 c ? esd (human body model) 3000 v ? esd (machine model) 300 v note 1: stresses greater than those listed under ?absolute maximu m ratings? may cause permanent dam age to the device. these are stress ratings only, and functional operation of the device at these or any other conditi ons beyond those indicated under ?recommended operating conditions? is not implied. exposure to ?absolute maximum ratings? for extended pe riods may affect device reliability. recommended operating conditions symbol parameter min max unit v cc supply voltage 10 25 v
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 5 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated electrical characteristics (@t a = +25c, v cc = 16v, unless otherwise specified.) symbol parameter conditions min typ max unit supply voltage (vcc pin) i startup startup current ? 2 5 20 a i cc operating supply current v fb =0v, c l =1nf 0.5 0.85 1.2 ma v fb =3v, c l =0nf 0.6 1.2 2.0 ? u vlo (on) ? 14.5 15.5 16.5 v ? v cc maintain ? 9.7 10.2 10.7 v ? u vlo (off) ? 7.6 8.6 9.6 v ? v cc ovp ? 27 28.5 30 v ? v cc clamp i cc =5ma 31 34 ? v pwm section/oscillator section ? maximum duty cycle ? 70 75 80 % ? oscillation frequency ? 60 65 70 khz ? green mode frequency ? 20 ? 30 khz ? ? frequency temperature stability -20 o c to 125 o c (note 2) ? ? 5 % ? ? frequency voltage stability v cc =12v to 30v ? ? 3 % ? ? frequency dithering ? 4 6 8 % ? current sense section (sense pin) v cs maximum sense voltage v fb =3.6v 0.9 0.95 1 v ? focp voltage ? 1.65 1.8 1.95 v ? leb time of sense ? 150 250 350 ns ? delay to output (note 2) ? ? 100 ? ns ? soft-start time ? 3 5 8 ms feedback input section (fb pin) ? the ratio of input voltage to current sense voltage ? 2.5 3 3.5 v/v ? input impedance ? 7 10 13 k ? ? source current v fb =0v -0.75 -0.5 -0.25 ma ? green mode threshold ? ? 2.1 ? v ? input voltage for zero duty ? 1.3 1.55 1.8 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 ? 11 13 15 v ? rising time (note 2) c l =1nf, v cc =13v ? 150 250 ns ? falling time (note 2) c l =1nf, v cc =13v ? 50 100 ns
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 6 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated electrical characteristics (cont.) (@t a = +25c, v cc = 16v, unless otherwise specified.) protection section (ctrl pin) ? source current ? 90 100 110 a ? internal reference voltage ? ? 1.5 ? v ? low threshold trigger for latch ? 0.47 0.5 0.53 v ? high threshold trigger for latch ? 2.35 2.5 2.65 v ? pull-up current (note 3) ? ? ? 2 ma delay time section ? delay of short circuit protection ? 54 64 74 ms ? delay of hiccup protection vcc ovp ? 25 ? s note 2: guaranteed by design. note 3: the sourcing current of ctrl pin must be limited below 5ma.otherwise it may cause permanent damage to the device.
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 7 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated performance characteristics startup voltage vs. ambient temperature shutdown voltage vs. ambient temperature startup current vs. ambient temperature operating current vs. ambient temperature ctrl utilization for latch ctrl vcc ntc ctrl vcc ntc vcc ctrl ntc ovp and otp ovp otp -40 -20 0 20 40 60 80 100 120 140 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 17.5 18.0 startup voltage (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 140 7.0 7.5 8.0 8.5 9.0 9.5 10.0 shutdown voltage (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 140 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 startup current ( ? a) 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 operating current (ma) ambient temperature ( o c)
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 8 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated operation description the ap3105na/nv/nl/nr is specific ally designed for off-line ac- dc power supply used in lcd monitor, notebook adapter and battery charger applications. it offers a cost effective solution with a versatile protection function. start-up current and uvlo the start-up current of ap3105na/nv/nl/nr 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 availability of using large st art-up resistor, which minimizes the resistor power loss for high voltage ac input. an uvlo comparator is included in ap3105na/nv/nl/nr to detect the voltage on vcc pin. it ensures that ap3105na/nv/nl/nr can draw adequate energy from hold-up capacitor during power-on. the turn-on threshold is 15.5v and th e turn-off threshold is 8.6v. current sense comparator and pwm latch the ap3105na/nv/nl/nr operates as a current mode controller, the output switch conduction is initia ted by every oscillator cycle and is terminated when the peak inducto r current reaches the threshold level established by the fb pin. the inductor current signal is converted to a voltage signal by inse rting 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: s fb pk r v i 3 / ) 8 . 0 ( ? ? moreover, focp with 1.8v threshold is only about 100ns delay, which can avoid some catastro phic damages such as secondary rectifier short test. few drive cy cles can alleviate the destruction range and get better protection. leading-edge blanking a narrow spike on the leading 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. at the time of turning on the mosfet, a negative undershoot (maybe larger than -0.3v) can occur on the sense pin. so it is strongly recommended to add a small rc filter or at least connect a resistor ?r? on this pin to protect the ic (shown as figure 1). fb sense gate gnd ctrl 6 1 3 4 ap3105na/ nv/nl/nr vcc 5 2 lar ge undershoot (mor e than - 0.3 v) m ay damage the sense pin r c necessary figure 1 built-in slope compensation it is well known that a continuous current mode smps may become unstable when the duty cycle exceeds 50%. the built-in slope compensation can improve the stability, so there is no need for design engineer to spend much time on that. fb pin and short circuit protection this pin is normally connected to the opto-coupler and always paralleled with a capacitor for loop compensation. when the voltage at this pin is greater than 4.2v and lasts for about 64ms, the ic will enter the protection mode. for ap3105na/nv/nr, the system will enter hiccup mode to wait the v cc decreasing to low uvlo level, then the ic will try to restart until the failure removed. and when this voltage is less than 1.55v, the ic will stop the drive pulse immediately. therefore, this f eature can be used for short circuit protection, which makes the system immune from damage. normally, output short makes the v fb value to the maximum because the opto-coupler is cut off. v cc maintain mode during light load or step load, v fb will drop and be lower than 1.55v, thus the pwm drive signal will be stopped, and there is no more new energy transferred due to no switching. therefore, the ic supply voltage may reduce to the shutdown threshold voltage and system may enter the unexpected restart mode. to avoid this, the ap3105na/nv/nl/nr hold a so-called v cc maintain mode which can supply energy to vcc. when v cc decreases to a setting threshold, the v cc maintain comparator will output some drive signal to make the system switch and provide a proper energy to vcc pin. the v cc maintain function will cooperate the pwm and burst mode loop which can make the output voltage variation be within the regulation. this mode is very useful for reducing startup resistor loss and achieving a better standby performance with a low value vcc capacitor. the v cc is not easy to touch the shutdown th reshold during the startup process and step load. this will also simplify the system design. the normal vcc voltage is suggested to be designed a little higher than v cc maintain threshold thus can achieve the best balance between the standby and step load performance.
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 9 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated operation description (cont.) system protection and pin fault protection the ap3105na/nv/nl/nr provides ve rsatile system and pin fault protections. the ocp comparator realizes the cycle-by-cycle current limiting (ocp). in universal input line voltage, the ic realizes the constant over load protec tion (olp). vcc over voltage protection can be applied as the primary ovp or opto-coupler broken protection. the ap3105na/n v/nl/nr also has pin fault connection protection including float ing and short connection. the floating pin protection include the sense, fb, etc.. the short pin protection includes the ctrl pin s hort protection. when these pins are floated or ctrl pin is shorte d to ground, pwm switching will be disabled, thus protecting the power system. latch protection function for some applications, the system requires the latch protection function. the ctrl pin has two kinds of modes to trigger the latch protection: high level trigger and lo w level trigger. the low threshold is 0.5v and high threshold voltage is 2.5v. some version will have only one mode. once the latch protection is triggered, the ic will disable the output signal, and the bulk capacitor provides the energy to ic through the startup resistor to ensure the ic disable the output (latch mode). this mode will be not released until the ac input is shut off. so, the de-latch time is mainly depending on the hv startup bulk capacitor value. t herefore, if the system wants a short de-latch time, it is better for the startup resistor take power from the point before the rectifier bridge as illustrated in figure 2. vcc gnd fb ctrl ap3105na/nv/nl/nr sense ac mains (90v to 265v) c bus gate 1 2 3 4 5 6 figure 2
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 10 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated ordering information ap3105 - circuit type package part number marking id packing type sot-23-6 ap3105naktr-g1 gkn tape & reel ap3105nvktr-g1 gko tape & reel ap3105nlktr-g1 gkp tape & reel AP3105NRktr-g1 gkq tape & reel bcd semiconductor's products, as desi gnated with "g1" suffix in the part number, are rohs compliant and green. *product version classification (wit h different protection functions) product version frequency vovp olp&socp ctrl (low) ctrl (high) ap3105na 65khz auto-recoverable auto-r ecoverable latch auto-recoverable ap3105nv 65khz latch auto-recoverable latch latch ap3105nl 65khz latch latch latch latch AP3105NR 65khz auto-recoverable auto-r ecoverable auto-recoverable latch g1: green tr: tape & reel product version* na: ap3105na nv: ap3105nv nl: ap3105nl nr: AP3105NR package k: sot-23-6
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 11 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated package outline dimensions (all dimensions in mm(inch).) sot-23-6 2.820(0.111) 3.100(0.122) 2. 650(0. 104) 3. 000(0. 118) 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. 500(0. 020) 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) 0.150(0.006) 0.900(0.035) 1.300(0.051) 1.450(0.057) max 123 4 5 6 pin 1 mark
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 12 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated suggested pad layout sot-23-6 ee g z y x dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) value 3.600/0.142 1.600/0.063 0.700/0.028 1.000/0.039 0.950/0.037
ap3105na/nv/nl/nr document number: ds36542 rev. 1 - 2 13 of 13 www.diodes.com september 2013 ? diodes incorporated ap3105na/nv/nl/nr a product line o f diodes incorporated important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the im plied warranties of merchantability and fitness for a particular purpose (and their equivalents under the la ws of any jurisdiction). diodes incorporated and its subsidiaries rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability ari sing out of the application or use of this document or any product described herein; neither does diodes inco rporated convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such applica tions shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability w hatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more un ited states, international or foreign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of t his document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical com ponents in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when proper ly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support devic e or system whose failure to perform can be reasonably expect ed to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2013, diodes incorporated www.diodes.com

▲Up To Search▲

Price & Availability of AP3105NR

	To Download AP3105NR Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .