MP3360 highly integrated photo flash charger and igbt driver MP3360 rev. 0.9 www.monolithicpower.com 1 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. the future of analog ic technology description the MP3360 is a fast, highly efficient and precision high voltage photo-flash charger for camera phone xenon flash. the MP3360 has programmable peak currents of 1.5a/1.4a/1.3a/1.2a/1.1a/1.0a/0.9a/0.8a /0.75a/0.7a/0.65a/0.6a/0.55a/0.5a/0.45a/0.4a. a 60v, 0.5 ? internal power switch lowers transformer turns ratio and switching losses associated with the primary leakage inductance and winding capacitance. integrated secondary feedback resistors provide +/-2.5% output voltage charge accuracy. MP3360 also has an integrated igbt driver with a regulated 2.7v gate voltage. MP3360 is available in the 10-pin, 2x2 flip chip package. features ? integrated 60v, 0.5 ? power switch ? single wire digital interface for current limit programming. ? 2.5% charge accuracy ? <1ua shutdown current ? integrated igbt driver with regulated gate voltage applications ? mobile phones with xeon flash ? digital still cameras ? optical film cameras ? pdas with xeon flash ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. typical application 4 9 8 6 1 10 1 3 2 5, 6, 7, 8 1, 2, 3 2 5 MP3360 fb igbtout vigbt pgnd igbtin chg chag agnd gnd tp6 tp8 tp9 xenon flash vin vin sw t1 t2 3 6 1 13 2 4 3 7 4 rdyb rdyb igbtin tp7 r2 499k 1206 600v/1a r3 1m 1206 u1 r1 10
MP3360 ? highly integrated photo flash charger and igbt driver MP3360 rev. 0.9 www.monolithicpower.com 2 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. ordering information part number* package top marking free air temperature (t a ) MP3360 10-pin, 2x2 flip qfn 4ky -40 c to +85 c for tape & reel, add suffix ?z (e.g. MP3360dg?z); for rohs compliant packaging, add suffix ?lf(e.g. MP3360dg?lf?z) package reference top view 1 2 3 4 5 10 fb vigbt vin agnd pgnd chg 9 8 7 6 igbtin igbtout sw rdyb absolute maxi mum ratings (1) v in to gnd .........................................-0.3vto 6v chg, igbtin, igbtout, vigbt, rdyb to agnd .................................-0.3vto 6v fb to agnd ...................................-60v to 350v sw to agnd...................................-0.3v to 60v pgnd to agnd ...........................-0.3v to +0.3v 2x2, 10 pin flip chip thermal resistance operating temperature ranges ......................... ............................................. -20 c to +85 c storage temperature............... -55 c to +150 c junction temperature ............................ +150 c continuous power dissipation (t a = +25c) (2) ??????????????????....1.6w lead temperature (solder).....................+260 c recommended operating conditions (3) supply voltage v in .............................2.5v to 6v operating junct. temp (t j )...... -40 c to +125 c thermal resistance (4) ja jc 2x2 flip chip ...........................80 ...... 16 ... 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 will cause excessive die temperature, and the regulator will 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.
MP3360 ? highly integrated photo flash charger and igbt driver MP3360 rev. 0.9 www.monolithicpower.com 3 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. electrical characteristics v in = v (chg) = 3.6v, t a = +25 c, unless otherwise noted. parameter conditions min typ max unit photoflash capacitor charger v in voltage range 2.5 6 v v in uvlo rising edge, hysteresis = 200mv typical 2.5 v v in quiescent current v(chg)=high, v(sw) = 0 1 2 ma v in quiescent current v(chg)=high, v(fb) = 325v 150 a shutdown current from v in v(chg)=low, v in =3.6v 1 a v sw leakage current v in =3.6v, v sw =60v, in shutdown 1 a sw on resistance between sw and gnd switch turn-on 0.5 ? pull-down resistance of chg pin v(chg)=3.6v 100 k ? ipeak1 program for highest current limit 1.3 1.5 1.7 a ipeak2 program for lowest current limit 0.4 0.6 a charge completion detect voltage at fb 290 298 308 v fb resistance v(fb)=30v 303 k ? dcm comparator threshold 5 v rdyb leakage current v(rdyb)=3.6v 0.1 a rdyb output low voltage isink= 2ma 0.2 v max ton maximum ton time 70 120 s thermal shutdown rising edge, hysteresis = 15 c 150 c charge input high voltage 2.4 v charge input low voltage 0.6 v t hi 0.1 s t lo 0.1 s t en_delay 30 s t pw vin=2.7v-5.5v 60 s
MP3360 ? highly integrated photo flash charger and igbt driver MP3360 rev. 0.9 www.monolithicpower.com 4 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. pin functions pin name function 1 igbtin logic input pin for igbt drive. 2 igbtout output drive for igbt gate. conn ect this pin to the gate of the igbt. 3 sw switch pin. this is the drai n of the internal power switch. 4 rdyb open-drain power-ready output. rdyb bec omes low when the output voltage is reached. 5 fb feedback pin. its trip voltage is 298v 6 chg charge enable pin. a low to high transition on this pin puts the part into power delivery mode. once the target voltage is reached, the part will stop charging the output. toggle this pin will start charging again. bring this pin low will terminate the power delivery and put the part in shutdown. this pin can be also us ed to program the peak cu rrent regulation. see the description for current programming. 7 pgnd power ground 8 agnd analog ground. tie it directly to local ground plane. 9 vin input supply pin. connect it to system supply voltage. bypass vin to gnd with a 0.1uf or greater ceramic capacitor. 10 vigbt 2.7v ldo output. vigbt is the supply voltage for igbt gate driver. bypass vigbt with 0.1uf cap to gnd.
MP3360 ? highly integrated photo flash charger and igbt driver MP3360 rev. 0.9 www.monolithicpower.com 5 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performance curves input voltage (v) v out (v) charge time vs. input voltage 600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 3900 2.5 3 3.5 4 4.5 5 5.5 6 6.5 charge time (ms) i set =1.5v c out =100uf v out =300v i set =1.5v c out =47uf v out =300v efficiency vs v out i set =1.5a 50 53 56 59 62 65 68 71 74 77 80 70 110 150 190 230 270 310 efficiency ( % ) v in =4.5v v in =3v v in =6v 0.995 0.996 0.997 0.998 0.999 1 1.001 2.5 3 3.5 4 4.5 5 5.5 6 6.5 input voltage (v) normalized output voltage (v) i set =1.5v c out =47uf v out =300v line regulation v sw 20v/div. v out 100v/div. i sw 1a/div. 2us/div. switching waveform v in = 3.3v, v out = 300v, i set = 1.5a, c out = 47uf switching waveform v in = 5.0v, v out = 300v, i set = 1.5a, c out = 47uf v sw 20v/div. v out 100v/div. i sw 1a/div. 2us/div. v chg 2v/div. v rdyb 2v/div. v out 100v/div. i sw 500ma/div. v chg 2v/div. v rdyb 2v/div. v out 100v/div. i sw 500ma/div. v chg 2v/div. v rdyb 2v/div. v out 100v/div. i sw 500ma/div. v chg 2v/div. v rdyb 2v/div. v out 100v/div. i sw 500ma/div. 400 s/div. charging waveform v in = 3.3v, v out = 300v, i set = 1.5a, c out = 47uf 200 s/div. charging waveform v in = 5.0v, v out = 300v, i set = 1.5a, c out = 47uf 1s/div. charging waveform v in = 3.3v, v out = 300v, i set = 1.5a, c out = 100uf 400 s/div. charging waveform v in = 5.0v, v out = 300v, i set = 1.5a, c out = 100uf
MP3360 ? highly integrated photo flash charger and igbt driver MP3360 rev. 0.9 www.monolithicpower.com 6 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. block diagram figure 1?functional block diagram
MP3360 ? highly integrated photo flash charger and igbt driver MP3360 rev. 0.9 www.monolithicpower.com 7 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. operation the MP3360 controlled flyback charger operates in critical conduction mode with peak current set by the chg pin. the output voltage is divided down through internal 300: 1 resistive divider from the positive terminal of the transformer secondary (fb pin) and compares it with the internal 1.2v reference. the low to high transition of the chg pin will enable the flyback converter to switch. a constant t off of 20 s is used when the output voltage is below 20v to avoid inrush current. the boundary mode operation will follow to minimize charge time when the output voltage is above 20v. a minimum t off of 200ns serves as blanking for turn off transition. the circuit will stop switching and rdyb will be pulled low once the flash capacitor is charged to 300v, a value set by the internal 300:1 r divider and 1.2v reference. vigbt will be regulated to 2.7v. when the charge is full, then part will shut down its internal circuitry with less than 1ua drawn from v in . toggling the chg pin will restart charge cycle. bringing the chg pin low terminates the power delivery and put the part in shutdown. a maximum t on timer prevents pulling current from a depleted battery. if the on time exceeds maximum t on , the switch is forced off regardless of the i peak detection. current limit programming the current limit can be programmed using the chg pin. after asserting the chg, it should be held high for at least 30us. after that, it takes two pulses to enter the programming mode. in the programming mode, each pulse advances the internal counter to the next higher current limit by 50ma until 750ma is reached and by 100ma increments beyond 750ma. the first pulse is for 400ma current limit. the next pulse will set the current limit to 450ma, etc. this programming should be done within 60us. otherwise, the programming pulses will be ignored after the programming window expires. when you have advanced to the desired current limit setting, the high state should be held to make the part switch with the set current limit. to set the current limit to 1.5a (highest possible), the previous procedure is not necessary. asserting and holding high the chg pin will make the part switches with a 1.5a current limit. see the following timing diagram for detailed timing information. chg t hi t en-delay t lo t pw on (internal) enprg (internal) first two required to initiate programming falling edge of the following pulses advance the internal counter during this time, the low state of chg can not shut-down the part. switching starts. ilim programming timing diagram (600ma current limit) 400ma 600ma
MP3360 ? highly integrated photo flash charger and igbt driver 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. MP3360 rev. 0.9 www.monolithicpower.com 8 1/29/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. package information qfn10 (2mm x 2mm)
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