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mp4060 triac dimmable pfc, primary side control led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 1 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description the mp4060 is a triac-dimmable, primary side control led controller enables single stage ac to dc led driver with excellent dimming performance. the dimming control method is optimized for high input ac voltages ranging from 200vac to 265vac. the mp4060 implements power-factor correction and works in boundary-conduction mode to reduce mosfet switching losses. the adaptive dimmer type detection and phase- cut-based dimming control achieves good dimmer compatibility and a deep dimming range. the active bleeder control circuit is integrated in bd pin to simplify the external bleeder design. the mp4060 has an integrated charging circuit at the supply pin for fast start-up without a perceptible delay. with the unique control of the driver dim pin, the mp4060 supports color temperature and brightness control for warm sunset dimming application. the mp4060 has multiple protection features that greatly enhance system reliability and safety including output over-voltage protection, output short-circuit protection, winding short- circuit protection, integrated thermal foldback, supply-pin under-voltage lockout, and over- temperature protection. all of the fault protections feature auto-restart. the mp4060 is available in soic-8 / msop-10 packages. features ? optimized for high line input 200-265vac ? primary-side-control without requiring a secondary-side feedback circuit ? adaptive dimmer type detection and phase-cut-based dimming control ? active bleeder control circuit integrated ? good dimmer compatibility and deep dimming range ? fast start-up without perceptible delay ? integrated thermal current foldback to prolong the led lifetime ? color temperature and brightness control for warm sunset dimming application ? accurate line & load regulation ? high power factor ? operates in boundary conduction mode ? cycle-by-cycle current limit ? winding short-circuit protection ? output over-voltage protection ? output short-circuit protection ? over-temperature protection ? available in soic-8 / msop-10 packages applications ? solid-state lighting up to 50 w ? industrial and commercial lighting ? residential lighting all mps parts are lead-free, halogen-free, and adhere to the rohs directive. for mps green status, please visit the mps website under quality assurance. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc.
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 2 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical application non-isolated low-side buck-boost led driver solution isolated dual-channel led driver for warm sunset dimming application
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 0.8 www.monolithicpower.com 3 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. preliminary specifications subject to change ? 2015 mps. all rights reserved. ordering information part number package top marking mp4060gs* soic-8 MP4060GK** msop-10 see below * for tape & reel, add suffix ?z (e.g. mp4060gs?z) ** for tape & reel, add suffix ?z (e.g. MP4060GK?z) top marking (soic-8) mp4060: first six digits of the part number llllllll: lot number mps : mps prefix y: year code ww: week code top marking (msop-10) y: year code w: week code lll: lot number m4060: first five digits of the part number
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 4 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. package reference mult zcd vcc bd comp gnd s d 1 2 3 4 8 7 6 5 top view mult zcd vcc damp bd 1 2 3 4 5 10 9 8 7 6 comp gnd dim s d top view soic-8 msop-10 absolute maxi mum ratings (1) vcc pin voltage ..........................-0.3 v to +30 v low-side control mosfet drain to source voltage v ds .................................-0.3 v to +30 v damp voltage .........................-0.3 v to +16.5 v zcd current ...............................-5 ma to +5 ma other analog inputs and outputs-0.3 v to +6.5 v continuous power dissipation (t a = +25c) (2) soic-8 ...................................................... 1.3 w msop-10 ................................................ 0.83 w lead temperature .....................................260c storage temperature ................ -65c to +150c recommended operating conditions (3) supply voltage vcc........................11 v to 27 v operating junction temp(t j ). .... -40 c to +125 c thermal resistance (4) ja jc soic-8 ................................... 96 ...... 45... c/w msop-10 .............................. 150 ..... 65... c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), the junction-to- ambient thermal resistance ja , and the ambient temperature t a . the maximum allowable continuous power dissipation at any ambient temperature is calculated by p d (max) = (t j (max)-t a )/ ja . exceeding the maximum allowable powe r dissipation produces an excessive die temperature, causing the regulator to go into thermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 3) the device is not guaranteed to function outside of its operating conditions. 4) measured on jesd51-7, 4-layer pcb.
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 5 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. electrical characteristics typical values are vcc = 20 v, t j = 25 c, unless otherwise noted. minimum and maximum values are at vc = 20 v, t j = -40 c to +125 c, unless otherwise noted, guaranteed by characterization. parameter symbol condition min typ max units supply voltage operating range vcc after turn on 11 27 v vcc upper level: internal charging circuit stops and ic turns on vcc h 9.5 10 10.5 v vcc lower level: internal charging circuit triggers vcc l 8.55 9 9.45 v vcc re-charge & ic turn-off level in fault condition vcc en fault condition 6.7 7.15 7.6 v supply current vcc charging current from d i d_charge v d = 16 v, vcc = 5 v 13 25 40 ma pull-down current before start-up i cc_pull_down vcc = 9 v, rising 0.95 1.25 1.8 ma quiescent current i q no switching, vcc = 15 v 800 1500 a quiescent current at fault i q_fault fault condition, ic latch, vcc = 15 v 220 340 620 a operating current i cc f s = 70 khz, vcc = 15 v 1 2 ma multiplier linear operation range v mult v comp from 1.9 v to 4.9 v 0 3 v v comp = 2 v, v mult = 0.5 v 0.9 1.28 1.6 1/v v comp = 2 v, v mult =1.5 v 0.9 1.25 1.6 1/v gain k (5) v comp = 2 v, v mult = 3 v 0.9 1.24 1.6 1/v triac dimming phase-off detection threshold v mult_off v mult falling edge 0.08 0.1 0.12 v triac dimming phase-on detection threshold v mult_on v mult rising edge 0.26 0.28 0.30 v triac dimming off line-cycle blanking ratio d off_leb 28 30 33 % v mult_dp_on_tl trailing-edge dimmer, v mult falling edge 0.43 0.45 0.47 v dimming pull-down mosfet turn-on threshold v mult_dp_on_ld leading-edge dimmer, v mult falling edge 0.22 0.25 0.28 v v mult_dp_off_tl trailing-edge dimmer, v mult rising edge 0.26 0.28 0.3 v dimming pull-down mosfet turn-off threshold v mult_dp_off_ld leading- edge dimmer, v mult rising edge 0.32 0.35 0.38 v leading-edge dimming detection low threshold v mult_ld_low v mult rising edge, for msop only 0.08 0.1 0.12 v leading-edge dimming detection high threshold v mult_ld_high v mult rising edge 0.26 0.28 0.30 v
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 6 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. electrical characteristics (continued) typical values are vcc = 20 v, t j = 25 c, unless otherwise noted. minimum and maximum values are at vcc = 20 v, t j = -40 c to +125 c, unless otherwise noted, guaranteed by characterization. parameter symbol condition min typ max units v mult rising edge: v mult_pk 0.58 v; v mult falling edge: v mult_pk 0.5 v 0.43 0.45 0.47 v v mult rising edge: 0.58 v > v mult_pk 0.53 v; v mult falling edge: 0.5 v > v mult_pk 0.45 v 0.38 0.4 0.42 v v mult rising edge: 0.53 v > v mult_pk 0.48 v (6) ; v mult falling edge: 0.45 v > v mult_pk 0.4 v (6) 0.35 v v mult rising edge: 0.48 v > v mult_pk 0.43 v (6) ; v mult falling edge: 0.4 v > v mult_pk 0.35 v (6) 0.3 v trailing-edge dimming detection high threshold v mult_tl_high v mult rising edge: 0.43 v > v mult_pk 0.38 v (6) ; v mult falling edge: 0.35 v > v mult_pk 0.3 v (6) 0.25 v trailing-edge dimming detection high threshold hysteresis v mult_tl_h_hys 80 mv trailing-edge dimming detection low threshold v mult_tl_low v mult falling edge 0.08 0.1 0.12 v leading-edge dimmer detection time t ld v mult rising edge 86 100 134 s leading-edge dimmer detection time hysteresis t ld_hys (7) when leading-edge dimming mode exits 160 s trailing-edge dimmer detection time t tl v mult falling edge 388 450 602 s error amplifier reference voltage v ref 0.4 0.414 0.428 v transconductance g ea (7) 130 a/v v compl_ld leading-edge dimmer 1.83 1.88 1.94 v v compl_tl trailing-edge dimmer 1.53 1.58 1.64 v comp lower clamp voltage v compl_n without dimmer 1.53 1.58 1.64 v max source current i comp+ 57 a max sink current i comp- -200 a i sink_dim_ld leading-edge dimmer -85.5 a sink current at triac dimming off i sink_dim_tl trailing-edge dimmer -155 a
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 7 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. electrical characteristics (continued) typical values are vcc = 20 v, t j = 25 c, unless otherwise noted. minimum and maximum values are at vcc = 20 v, t j = -40 c to +125 c, unless otherwise noted, guaranteed by characterization. parameter symbol condition min typ max units current sense comparator leading-edge blanking time t leb 350 500 750 ns over-current protection leading-edge blanking time t leb_ocp 260 350 550 ns over-current protection threshold v ocp 2.56 2.7 2.86 v current sense upper clamp voltage v s_clamp_h 1.97 2.07 2.17 v current sense lower clamp voltage v s_clamp_l v comp = 2.2 v 10 35 90 mv zero-current detector zero-current detect threshold v zcd_t v zcd falling edge 0.27 0.30 0.33 v zero-current detect hysteresis v zcd_hys 550 590 625 mv after turn off when v mult_o 0.25 v 1.9 2.3 3.36 s zero-current detect leb t zcd_leb after turn off when v mult_o < 0.25 v 0.95 1.18 1.68 s over-voltage threshold v zcd_ovp 4.9 5.3 5.7 v after turn off when v mult_o 0.25 v 1.9 2.3 3.36 s ovp detect leb t ovp_leb after turn off when v mult_o < 0.25 v 0.95 1.18 1.68 s minimum off time t off_min 4 5.3 8 s weak/strong dp mode detector current (for leading-edge dimmer) i dp_det_ld 13 18 23 a weak dp mode enable threshold (for leading-edge dimmer) v en_dp_wk_ld 1.13 1.18 1.23 v weak/strong dp mode detection time (for leading-edge dimmer) t dp_det_ld 150 215 320 s
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 8 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. electrical characteristics (continued) typical values are vcc = 20 v, t j = 25 c, unless otherwise noted. minimum and maximum values are at vcc = 20 v, t j = -40 c to +125 c, unless otherwise noted, guaranteed by characterization. parameter symbol condition min typ max units internal control mosfet breakdown voltage bv dss v gs = 0 30 v i d = 100 ma, t j = 25 c 250 m ? drain-source on resistance r ds(on) i d = 100 ma, t j = 25 c, vcc = vcc en + 50 mv 250 m ? internal ovp pull-up mosfet breakdown voltage bv dss_d_vcc v gs_d_vcc = 0 30 v continued drain current i d_d_vcc 10 17 27 ma internal dimming pull-down current source strong dimming pull-down current (for leading-edge dimmer) i dp_strong_ld 27 35 43 ma weak dimming pull-down current (for leading-edge dimmer) i dp_weak_ld 8 10 12 ma pull-down current (for trailing-edge dimmer) i dp_tl 133 150 167 ma min clamp ratio of pull-down current (for trailing-edge dimmer) i dp_min /i dp_tl 13 % damp turn-off threshold v mult_damp_off v mult falling edge 0.22 0.25 0.28 v turn-on threshold v mult_damp_on v mult rising edge 0.32 0.35 0.38 v pull-down current i damp_pull_down v damp = 5 v 290 370 450 a pull-up current i damp_pull_up v damp = 0.3 v 70 90 110 a upper clamp voltage v damp_clamp 13 15 16.5 v min pull-up voltage v damp_min vcc = vcc en +50 mv 5.5 v internal bleeder disable mosfet (open-drain output) i bd = 5 ma 60 115 ? bleeder disable fet on resistance r ds(on)_bd i bd = 5 ma, vcc = vcc en + 50 mv 60 115 ?
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 9 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. electrical characteristics (continued) typical values are vcc = 20 v, t j = 25 c, unless otherwise noted. minimum and maximum values are at vcc = 20 v, t j = -40 c to +125 c, unless otherwise noted, guaranteed by characterization. parameter symbol condition min typ max units dim source current i dim_source 2 3 4 ma sink current i dim_sink 1.5 2.8 4 ma output high level v dim_high 5.0 6.1 v output low level v dim_low 0.3 v starter re-start timer period t start 100 130 165 s short-circuit detection short-circuit detection timer t sc in auto-restart mode, only dimming on time is counted 60 ms thermal protection thermal foldback threshold t start (6) 145 c thermal shutdown threshold t sd (6) 155 c thermal shutdown recovery hysteresis t hys (6) 25 c notes: 5) the multiplier output is given by: vs = k?vmult? (vcomp-1.5). 6) guaranteed by characterization. 7) guaranteed by design.
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 10 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical characteristics v ref (v) reference voltage vs. junction temperature 0.412 0.4125 0.413 0.4135 0.414 0.4145 0.415 0.4155 0.416 -50 -25 0 25 50 75 100 125 150
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 11 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics radiated emi tested by cdn, v in =230v ac /50hz, full load line regulator v in =198-265vac/50hz,full load efficiency vs. v in v in =198-265v ac /50hz, full load dimming curve v in =230vac/50hz , full load, with different dimmers thd vs. v in v in =198-265vac/50hz, full load pf vs. v in v in =198-265v ac /50hz, full load pf output current (ma) v in (v ac ) v in (v ac )v in (v ac ) conducted emi l-line v in = 230v ac /50hz, full load, rbw = 9khz, mt = 20ms conducted emi n-line v in = 230v ac /50hz, full load, rbw = 9khz, mt = 20ms 300 mhz 30 mhz 6db sgl 1 pk clrwr 2 av clrwr tds 6db 9 khz 30 mhz sgl 1 pk clrwr 2 av clrwr tds 6db 9 khz 30 mhz sgl 1 pk clrwr 2 av clrwr tds 198 208 218 228 238 248 258 v in (v ac ) 198 208 218 228 238 248 258 198 208 218 228 238 248 258 198 208 218 228 238 248 258 5 0 10 20 30 40 50 60 70 80 90 100 110 120 en55015q en55015a 100 khz 1 mhz 10 mhz s 6 t 40 100 khz 1 mhz 10 mhz 0 10 20 30 40 50 60 70 80 90 100 110 120 en55015q en55015a cdn_qp 0 10 20 30 40 50 60 70 80 90 100 110 120 100 mhz 0 20 40 60 80 100 120 140 160 0 102030405060708090 leading edge trailing edge -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 70 71 72 73 74 75 76 77 78 79 80 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 0 5 10 15 20 25 30 35 40
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 12 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics (continued) v mult 500mv/div. i in 100ma/div. steady state v in =230v ac /50hz, full load v zcd 5v/div. v s 500mv/div. v cc 20v/div. v mult 500mv/div. i out 100ma/div. v damp 10v/div. v bd 5v/div. v mult 500mv/div. i out 100ma/div. v comp 2v/div. v bd 1v/div. v mult 500mv/div. i in 100ma/div. v damp 1v/div. v comp 2v/div. v mult 500mv/div. i in 50ma/div. v bd 1v/div. v comp 2v/div. v mult 500mv/div. i in 50ma/div. i out 100ma/div. v comp 2v/div. v mult 500mv/div. i in 100ma/div. v comp 2v/div. v comp 1v/div. v damp 20v/div. v zcd 2v/div. v bd 100mv/div. v mult 500mv/div. steady state v in =230v ac /50hz, full load v in start up v in =230v ac /50hz, full load steady state v in =230v ac /50hz, full load dimming performance max dimming on phase with leading-edge dimmer v in =230v ac /50hz dimming performance max dimming on phase with trailing-edge dimmer v in =230v ac /50hz dimming performance min dimming on phase with trailing-edge dimmer v in =230v ac /50hz dimming performance min dimming on phase with leading-edge dimmer v in =230v ac /50hz ovp led load open at normal operation v in =230v ac /50hz
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 13 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics (continued) v comp 1v/div. i out 100ma/div. i led 100ma/div. v zcd 2v/div. v cc 20v/div. v comp 1v/div. v zcd 500mv/div. v cc 10v/div. ovp led load open and recovery v in =230v ac /50hz output short circuit short led+ to led- and recovery v in =230v ac /50hz
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 14 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. pin functions pin # soic-8 pin# msop-10 name description 1 1 mult one of the internal multiplier inputs. connect mult to the tap of a resistor divider from the rectified voltage of the ac line. the half-wave sinusoid signal on mult provides a reference signal for the internal current control loop. mult is also used for dimmer type detection and dimming phase detection. 2 2 zcd zero-current detection . a falling edge triggers the internal mosfet?s turn-on signal. connect zcd to the t ap of a resistor divider from the auxiliary winding to gnd. zcd detects the over-voltage condition. over- voltage occurs if v zcd exceeds the over-voltage protection (ovp) threshold (after a blanking time) whe n the internal mosfet turns off. zcd is also used to select the strong/weak dimming pull-down current in leading-edge dimming. zcd detects the output short-circuit condition. 3 3 vcc supply voltage. vcc provides the supply power for both the control signal and the internal mosfet?s gate driver. connect vcc to an external bulk capacitor (22 f, typically). 4 5 bd bleeder disable output. bd integrates a fet. its open-drain output is applied to pull down the external active bleeder?s control signal to disable the bleeder. 5 6 d internal low-side main mosfet drain. d is connected to the source of the external high-side main mosfet. also, b is connected internally to vcc through a diode and a jfet to form an internal charging circuit for vcc. there is a mosfet and diode connected in series internally to pull up d to vcc during a fault condition, which turns off the main switch reliably. there is an intelligent dimmi ng pull-down current source on d. 6 7 s internal low-side main mosfet source. connect a resistor from s to gnd to sense the internal mosfet current. a n internal comparator compares the resulting voltage to the internal sinusoid shaped current reference signal to determine when t he mosfet turns off. if the voltage exceeds the upper current-clamp th reshold (after the leading-edge blanking time during the tu rn-on interval), the gate signal turns off. over- current occurs if v s exceeds ocp voltage during the gate-on interval after the ocp leading-edge blanking time. 7 9 gnd ground . current return of the control signal and power signal. 8 10 comp loop compensation. connect comp to a compensation network to stabilize the led driver and accurate ly control the led driver current. -- 4 damp gate control pin of the external damping mosfet. -- 8 dim gate driver. the dim signal from the inter nal control logic. dim is used to control the color temperature and brightness for warm sunset dimming or drive an external dummy load to enlarge the dimming depth.
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 15 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. functional block diagram ovp current sense current limit zcd s d mult comp dim multiplier zero-current detection gate driver control pwm/ pfc dimmer type detector emi filter n: 1 gnd vcc uvlo / en power supply real current calculation gate control latch off dp current sources dimming phase detector otp ocp gate driver control damp gate driver control vref opto-coupler circuit bd bd driver control scp thermal foldback figure 1?mp4060 functional block diagram
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 16 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. operation the mp4060 is a triac-dimmable primary-side control, offline led controller designed for high- performance led lighting. the mp4060 controls accurately the led current using the real-current control method based on primary-side information. the adaptive dimmer type detection and phase-cut-based dimming control provide good dimmer compatibility and a deep dimming range. also, it achieves a high power factor to eliminate noise pollution on the ac line. the integrated vcc charging circuitry achieves fast start-up without any perceptible delay. the integrated thermal current foldback function can prolong the lifetime of the led. with a duty ratio that varies with the dimming cycle, dim easily supports color temperature and brightness control for warm sunset dimming application. boundary-conduction mode during the external mosfet on time (t on ), the rectified input voltage applied on the primary-side inductor (lm) makes the primary current through lm increase linearly from zero to the peak value (i pk ). then, the external mosfet turns off, the energy stored in lm forces the secondary-side rectifier diode to turn on, and the inductor current decreases linearly from the peak value to zero. v ds v ac lin e +nv out v ac line i p t off t on turn on v zcd 0 inductor current i s /n figure 2?boundary-conduction mode when the current decreases to zero, the voltage drop on the main mosfet drain-to-source falls and oscillates. the oscillation frequency is determined by the primary-side inductor and the combined parasitic capacitances. the resonance is reflected on the auxiliary winding (see figure 2). the zero-current detector generates the external mosfet turn-on signal when the zcd voltage falls below v zcd_t after a blanking time (t zcd_leb ) and ensures the mosfet turns on at a relatively low voltage (see figure 3). + vcc zcd auxiliary winding r zcd1 v zcd_t r zcd2 figure 3?zero-current detector as a result, there are incredibly small primary switching-on losses and no secondary-diode reverse-recovery losses. this ensures high efficiency and low emi noise. real-current control the proprietary real-current?control method allows the mp4060 to control the secondary-side led current based on primary-side information. the output led mean current can be calculated approximately with equation (1): ? ? ref o s nv i 2r (1) where: n is the turn ratio of the primary side to the secondary side, v ref is the internal reference voltage (typically 0.414), and r s is the sense resistor between the internal mosfet source and gnd.
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 17 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. power-factor correction mult is connected to the tap of a resistor divider from the rectified instantaneous line voltage, driving a sinusoidal multiplier output. this signal provides the reference for the current comparator, which shapes the primary peak current into a sinusoid and has the same phase with the input line voltage. this guarantees a high power factor (see figure 4). inductor current multiplier output figure 4?power-factor correction the multiplier?s maximum output voltage to the current comparator is clamped to v s_clamp_h to limit the cycle-by-cycle current. the multiplier?s minimum output voltage is clamped to v s_clamp_l to ensure a turn-on signal during the triac dimming-off interval, which pulls down the rectifier input voltage and accurately detects the dimming phase. vcc timing sequence the vcc timing sequence is shown in figure 5. initially, vcc is charged through the internal charging circuit from the ac line. when vcc reaches vcc h , the internal charging circuit stops charging, the control logic initializes, and the internal main mosfet begins to switch. the auxiliary winding takes over the power supply. however, the initial auxiliary winding positive voltage may not be large enough to charge vcc, causing vcc to drop. instead, if the vcc voltage drops below the vcc l threshold, the internal charging circuit triggers and charges vcc to vcc h again. this cycle repeats until the auxiliary winding voltage is high enough to power vcc if any fault occurs during this time, the switching and the internal charging circuit stop, and vcc drops. when vcc drops below vcc en , the internal re-charge is enabled to auto-restart. to simplify the power supply circuitry, an external charging diode is applied between d (the source of the external power mosfet) and the vcc capacitor (see typical application). d takes over the vcc power supply at normal operation, without an auxiliary winding. if any fault occurs, the system re-starts after the input ac line powers down/up again. figure 5?vcc timing sequence auto start the mp4060 contains an auto starter that starts timing when the mosfet turns off. if zcd fails to send a turn-on signal after t start , automatically the starter sends a turn-on signal to avoid an unnecessary shutdown. minimum off time the mp4060 operates with a variable switching frequency. the frequency changes with the instantaneous input bus voltage. in order to limit the maximum frequency and get good emi performance, the mp4060 employs an internal minimum off-time limiter. leading-edge blanking in order to avoid premature switching-pulse termination due to the parasitic capacitances discharging when the mosfet turns on, an internal leading-edge-blanking (leb) time is introduced on s. the current comparator blocks the input path from s during the blanking time (see figure 6)
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 18 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. figure 6?leading-edge blanking output over-voltage protection (ovp) output over-voltage protection (ovp) prevents the components from over-voltage damage. the voltage of the auxiliary winding positive plateau is proportional to the output voltage, so the ovp block monitors this auxiliary winding voltage to apply an ovp function (see figure 7). once zcd voltage exceeds v zcd_ovp , the ovp signal is triggered, the gate driver turns off, and the ic works in quiescent current mode. when the vcc voltage drops below the uvlo threshold, the ic shuts down and the system re-starts. the output ovp set point is calculated with equation (2): ?? = + aux zcd2 out _ ovp zcd _ ovp sec zcd1 zcd2 nr vv nr r (2) where: v out_ovp is the output ovp threshold, n aux is the turns of the auxiliary winding, and n sec is the turns of the secondary winding. figure 7?ovp sampling circuit to avoid switch-off spikes mis-triggering ovp, ovp sampling has a t ovp_leb blanking period (see figure 8). figure 8?zcd voltage & ovp sampling cycle-by-cycle current limit there is cycle-by-cycle current limit on s. when the voltage on s reaches v s_clamp_h (after a blanking time), the switching turns off to limit the peak current value. primary over-current protection (ocp) s has an internally integrated comparator for primary side ocp. when the gate is on, the comparator is enabled. over-current occurs when vs exceeds v ocp after a blanking time. the ic shuts down and re-starts after vcc drops below uvlo. the ocp function block diagram is shown in figure 9. s d t leb_ocp ocp v ocp gate rs i lm latch blanking figure 9?over-current protection circuit led short-circuit protection (scp) when an led short circuit occurs, the ic reduces the switching frequency to 7 khz. the the output power at this condition is limited within a safe range.
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 19 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. thermal protection to prevent the ic and the system from any lethal thermal damage (when the junction temperature exceeds t start ), the mp4060 chops the reference to decrease the output current, which limits the rising temperature speed of the ic. typically, the output current drops to 20 percent when the ic temperature rises to t sd . once it exceeds t sd , the mp4060 shuts down the switching cycle and is latched until vcc drops below uvlo. when the junction temperature drops a recovery hysteresis (t hys ), the chip re- starts again. bleeder disable if the external active bleeder is applied to improve the triac-dimming compatibility, the mp4060 features a bleeder disable function to pull down the bleeder transistor by bd. this improves system efficiency and thermal performance if the bleeder is useless in certain conditions. figure 10 shows the bleeder disable circuit. figure 10?bleeder disable circuit the integrated bd fet works in an open-drain configuration when vcc drops below uvlo or the active bleeder is activated. the bd fet is turned on to pull down the bleeder transistor under the following conditions: i. the dimmer is not connected to the driver. ii. the fault (ovp/ocp/otp) triggers. iii. the system works in auto-restart mode over t sc . for example, scp occurs. the bd timing sequence is shown in figure 11. figure 11?bd timing sequence adaptive dimmer type detection the mp4060 integrates adaptive dimmer type detection to detect accurately which kind of dimmer is connected at the system start-up (leading-edge dimmer, trailing-edge dimmer, or no dimmer). the mp4060 works in different modes depending on the dimmer types to achieve the best dimmer compatibility with the highest performance. phase-cut-based dimming control the mp4060 implements phase-cut-based dimming control (both for leading-edge and trailing-edge dimmers). for leading-edge dimmers, most are triac-based. usually, the triac dimmer consists of a bi-directional scr and an adjustable turn-on phase. figure 12 shows the leading-edge triac dimmer waveforms. line voltage after triac dimmer input line voltage before triac dimmer rectified line voltage dimmer turn on phase line cycle figure 12?leading-edge dimmer waveforms
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 20 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. for trailing-edge dimmers, the waveforms are shown in figure 13. figure 13?trailing-edge dimmer waveforms the mp4060 detects the dimming turn-on cycle through mult. based on the turn-on cycle, the control circuitry adjusts the internal reference voltage. mult voltage exceeding v mult_on is recognized as a dimmer turn-on signal. mult voltage below v mult_off is recognized as a dimmer turn-off signal. the mp4060 has a 30 percent line-cycle-detection blanking time at each line cycle. the real phase detector output is added to this blanking time to determine the reference voltage. if it is higher than 100 percent, the reference voltage is clamped to 100 percent (see figure 14). this means if the turn-on cycle exceeds 70 percent of the line cycle, the reference maintains the maximum value, which means the maximum output current with different dimmers is almost the same as the rated output current. figure14?dimming turn-on cycle detector the internal reference voltage decreases when the turn-on cycle decreases to less than 70 percent of the line cycle, lowering the output current. as the dimming turn-on cycle decreases, the comp voltage decreases. for a leading- edge dimmer, once the comp voltage reaches v compl_ld , it is clamped. the output current decreases slowly to maintain the triac holding current and avoid random flicker. figure15 shows the relationship between the leading-edge dimming turn-on phase and the output current. figure 15?leading-edge dimming curve for a trailing-edge dimmer, there is no holding current. the comp voltage is clamped at a lower level (v coml_tl ) to get a deeper dimming depth. figure 16 shows the relationship between the trailing-edge dimming turn-on phase and the output current. figure 16:?trailing-edge dimming curve dimming pull-down current source there are three kinds of dimming pull-down current sources in mp4060. the i dp_tl current source is for trailing-edge dimming, the other two (weak/strong) current sources are for leading- edge dimming. the dimming pull-down current is used to pull down the rectified line voltage to zero quickly to avoid a mis-detection on mult.
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 21 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. if the leading-edge dimmer is detected, the dimming pull-down current source turns on when mult decreases to v mult_dp_on_ld, and it turns off when mult increases to v mult_dp_off_ld . if the trailing-edge dimmer is detected, the dimming pull-down current source turns on when mult decreases to v mult_dp_on_tl, and it turns off when mult increases to v mult_dp_off_tl . the weak/strong dimming pull-down current sources are selected through different resistances on zcd. figure 17 shows the selected logic: if i dp_det_ld *(r1+r2//r3) v en_dp_str_ld , a strong dimming pull-down current source is selected; otherwise, a weak dimming pull-down current source is selected. in real application design, the weak/strong dimming pull-down current selection is related to the detailed application spec. figure 17?weak/strong dimming pull-down current source selection damping circuit control if a leading-edge dimmer or trailing-edge dimmer is detected, the damping circuit is enabled to limit the inrush current the moment the dimmer turns on. if no dimmer is detected, the damping circuit is disabled by pulling up the damp pin voltage, so the damping resister is shorted by the damping mosfet. the damp pin voltage is pulled up if mult voltage increases higher than v mult_damp_on. it is pulled down when mult voltage decreases lower than v mult_damp_off . the maximum pull-up current source is 100 a while the maximum pull-down current source is 400 a. color temperature and brightness control for warm sunset dimming application the color temperature and brightness control circuit is shown in figure 18. figure 18?color temperature and brightness control circuit dim of mp4060 outputs a driving signal for the external mosfet. the dim control logic is shown in figure 19. figure 19?dim signal logic the dim turn-on signal is the compliment signal of the dimming turn-on signal. this means the longer the dimming turn-on cycle, the smaller the dim turn-on cycle. the dim stays low and the output current flows only through the 1 st led string when the dimming turn-on cycle is greater than 70 percent. as the dimming turn-on cycle decreases, the dim turn-on duty cycle proportionally increases the current in the 2 nd led string. the total current through the 1 st string and the 2 nd string remains constant. this current balance achieves color temperature and brightness control. the maximum current through
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 22 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the 2 nd string is adjusted by changing the resistance of ra. dimming depth enlargement driving a mosfet to pull down a resistor from the auxiliary winding to gnd forms a dummy load, which helps distribute the output current. dim working timing means a shorter the dimming duty cycle results in a higher dummy load distribution current. this method enlarges the dimming depth. the dimming depth enlargement circuit is shown in figure 20. figure 20?dimming depth enlargement circuit
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 23 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical application circuits input 200~240vac/50hz led- led+ output 72v/125ma mb6s 3 4 2 1 bd1 600v/0.5a 51 1w r2 1 2 3mh l1 1 2 100nf/450v c1 c8 220nf/450v ee13 182ts 54ts 4 5 2 3 t1 lm=1.56mh isu04n65a 2 3 1 q1 650v/4a 1 2 22uf/50v c4 es1j 1 2 sma 600v/1a d3 6.8k/1w r12 3dd13001 3 1 2 q2 400v/0.2a 1n4148w 1 2 d7 75v/0.15a s1jl 1 2 600v/1a d6 s1jl 1 2 600v/1a d5 20/1%/1206 r11 1 2 330uf/80v c7 0.25w 1m/1% r3 1 2 100nf 450v c2 2 1 470nf 25v c5 1 2 rlz te-11 18d 16.82v/10ma d1 68.1k/1% r9 30/0805 r6 2k r14 510 1w r13 4.02k/1% r4 2 1 3.3nf 50v c3 0805 2/1% r7 249k/1% r8 1206 100k r10 s1jl 1 2 600v/1a d4 11.3k r15 1206 2 1 10nf/630v c9 mult 1 zcd 2 vcc 3 damp 4 s 7 dim 8 gnd 9 comp 10 bd 5 d 6 u1 MP4060GK 2 3 1 q3 ns ns c11 2 1 2.2uf/10v c6 1m/0.25w r5 1 2 d8 1n4148ws/75v/0.15a 2 1 10nf 50v c10 1206 20 r16 dsf1j 1 2 600v/1a d2 ns r18 tvr07431 rv1 39 1w fr1 test point 0805 6.8/1% r1 1206 0 r17 figure 21?a19 bulb driver, 200 vac-240 vac/50 hz input, v o = 72 v, i o = 125 ma, buck-boost converter, high-performance . evb model: ev4060-k-00a
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds mp4060 rev. 1.0 www.monolithicpower.com 24 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. package information soic-8 0.016(0.41) 0.050(1.27) 0 o -8 o detail "a" 0.010(0.25) 0.020(0.50) x 45 o see detail "a" 0.0075(0.19) 0.0098(0.25) 0.150(3.80) 0.157(4.00) pin 1 id 0.050(1.27) bsc 0.013(0.33) 0.020(0.51) seating plane 0.004(0.10) 0.010(0.25) 0.189(4.80) 0.197(5.00) 0.053(1.35) 0.069(1.75) top view front view 0.228(5.80) 0.244(6.20) side view 14 85 recommended land pattern 0.213(5.40) 0.063(1.60) 0.050(1.27) 0.024(0.61) note: 1) control dimension is in inches. dimension in bracket is in millimeters. 2) package length does not include mold flash, protrusions or gate burrs. 3) package width does not include interlead flash or protrusions. 4) lead coplanarity (bottom of leads after forming) shall be 0.004" inches max. 5) drawing conforms to jedec ms-012, variation aa. 6) drawing is not to scale. 0.010(0.25) bsc gauge plane
mp4060?triac dimmable pfc, psc led controller for 200-265vac leds notice: the information in this document is subject to change wi thout notice. users should warra nt and guarantee that third party intellectual property rights are not infringed upon w hen integrating mps products into any application. mps will not assume any legal responsibility for any said applications. mp4060 rev. 1.0 www.monolithicpower.com 25 5/27/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. msop-10

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