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AMG-LM302 ballast controller for metal halide lamps 1. functional description of the AMG-LM302 the AMG-LM302 is a ballast controller ic for metal halide lamps (hid, cdm, hqi). the AMG-LM302 integrates all functions necessary for control off metal halide lamps including power factor correction (pfc), ignition voltage generation and overdrive, current supply and power management. the ballast controller specifically supports high stability of color temperature. 2. features pfc ? pfc operates in current controlled transition mode (tm) with overvoltage protection ? separate undervoltage lockout for pfc and hid part ? zero current detection for tm operation ? real multiplier for excellent thd ? high pulse current driver output for hv power mos ? internal reference voltage hid ? current mode controlled buck converter ? buck converter with driver for external transistor ? power drive mode for hv mosfets ? safe ignition through burst oscillation ? 30khz pwm in capture compare mode with maximum duty cycle of 50% ? regulation of lamp power ? slope compensation ? open load and short-circuit detection ? completely adjustable current and power ramp during lamp warm-up period ? full bridge drive for acoustic control ? automatic time control for all function ? monitoring of lamp state general ? wide supply range of 14.5v to 35v ? low power startup current ? disable function to shut down the ballast and reduce power consumption ? over temperature protection ? short-circuit protected ? ambient temperature range: -25c to +125c ? package: tqfp48 3. application the AMG-LM302 is suitable for all application where the light spectrum and color temperature of the sun, which is given by metal halide lamps, are needed. the AMG-LM302 controls the whole lamp ballast and thus not only provides for a low cost solution, but also one, which is high quality and easy to design. AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 1 of 23
AMG-LM302 ballast controller for metal halide lamps 3.1. example application drawing 3.2. application notes please see amg-an-lm302. AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 2 of 23 figure 1 : simplified application drawing. pwm ovlo uvlo pfc control buck hsd hsd lsd lsd AMG-LM302 amg-df102 pwm cdm digital control oth 230vac vc supply cdm lamp
AMG-LM302 ballast controller for metal halide lamps table of contents 1.functional description of the AMG-LM302 ............................................................................. 1 2.features ................................................................................................................................. 1 3.application ............................................................................................................................. 1 3.1.example application drawing ................................................................................................... 2 3.2.application notes ..................................................................................................................... 2 4.block diagram ....................................................................................................................... 4 5.block descriptions (optional) .................................................................................................. 5 6.pinning / pad coordinates ..................................................................................................... 6 7.pin description (optional) ....................................................................................................... 8 8.absolute maximum ratings ................................................................................................... 8 9.electrical characteristics ...................................................................................................... 10 9.1.operational range ................................................................................................................. 10 9.2.dc characteristics ................................................................................................................. 10 9.3.ac characteristics .................................................................................................................. 14 10.flow chart ........................................................................................................................ 16 11.timing diagrams ................................................................................................................ 17 12.application ......................................................................................................................... 18 12.1.example application circuit(s) ............................................................................................. 18 12.2.calculating pfc parameters ................................................................................................ 18 12.3.calculating hid parameters ................................................................................................. 19 12.4.application notes ................................................................................................................. 20 13.ic-package ........................................................................................................................ 20 14.ic-marking ......................................................................................................................... 20 15.ordering information .......................................................................................................... 21 16.notes and cautions ........................................................................................................... 21 16.1.esd protection ..................................................................................................................... 21 16.2.storage conditions ................................................................................................................ 21 17.disclaimer .......................................................................................................................... 21 18.contact information ............................................................................................................ 22 AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 3 of 23
AMG-LM302 ballast controller for metal halide lamps 4. block diagram AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 4 of 23
AMG-LM302 ballast controller for metal halide lamps 5. block descriptions the whole application for a metal halide lamp needs the following major function blocks: ? mains rectification ? pfc ? lamp power regulation ? lamp ignition control ? high voltage bridge ? bridge drivers the mains rectification and the high voltage bridge are completely built using discrete components. there are two basic options to do the bridge drivers, either discrete or integrated. alpha recommends the use of a fully integrated full bridge gate driver amg-df102. the AMG-LM302 does have the pfc, lamp power regulation, ignition control and other subfunctions integrated. the pfc part of the AMG-LM302 is a standard power factor correction regulator. the cdm part contains the power and ignition control of the lamp. for power control the lamp current i outi and the lamp voltage v outi get measured and then multiplied to receive the actual lamp power. the power is then outputed via the ctrlo pin. it can be manipulated and filtered by external devices and will then get fed (as the actual value) into an error amplifier via the fb pin. the error amplifier uses an internal 2.5v reference voltage as the set value. the output of the error amplifier is fed into a current limiter stage and finally outputed via the pwmo pin. the signal from the pwmo pin eventually drives the buck converter, thus impacting the bridge voltage and in turn the lamp power. a capacitor connected to the cop pin sets the frequency of the internal oscillator. the oscillator frequency eventually determines the switching frequency of the bridge. the oscillator frequency needs to be double the resonant frequency of the lc low pass filter for the cdm- lamp. the output br drives a low and it's corresponding high side transistor. the output nbr is inverted to br and drives the other low and high side transistors. a dead time is automatically inserted before the rising edges of br and nbr so to avoid shoot through. this dead time can externally be influenced with a capacitor connected to the cdt pin. the switching frequency of the oscillator should not be high enough, to avoid audible noise from the plasma in the lamp. it should not be too high either, cause this will increase power consumption. there is a control logic, which senses the state of the lamp. for ignition, it will generate a high AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 5 of 23
AMG-LM302 ballast controller for metal halide lamps switching frequency on the bridge. for burn state, it will generate a low switching frequency on the bridge. the open drain output flag indicates the current state of the application: flag is high impedance = standby, low power mode flag is low = start up phase flag is changing state between low and high impedance = lamp ignition phase the flag output maybe used to drive an led (with ext. resistor) or as a status indication to other circuitry. when the lamp is hot, the ignition phase can be very long (up to 30min.). for the calculation of the various values of resistors and capacitors, please refer to section 11. applications and/or application note amg-an-lm302. AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 6 of 23
AMG-LM302 ballast controller for metal halide lamps 6. pinning AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 7 of 23 37 l m 3 0 2 y y w w l l x x y y . z top view br cp p w m o v o u t i 13 25 p g n d p w m p 1 rtu agndh rmp rtd iset i o u t i c d t po zcd cop flag act agndr comp e n v 5 v v s v 1 5 v d r v s u b cs pi vref pof bdis nbr i p k v o u t s c t r l o f b
AMG-LM302 ballast controller for metal halide lamps pin # symbol description 1 nc 2 comp frequency compensation output of the cdm error amplifier 3 agndh ground connection for analog circuitry in the cdm part 4 iset adjust bias current with 500kohm to agndh 5 rmp adjust steady state lamp current with resistor to agndh 6 rtd setting upper voltage threshold for lamp power in the steady-state mode (<180v) with a resistor to agndh 7 rtu setting lower voltage threshold for lamp power in the steady-state mode (>50v) with a resistor to agndh 8 cop a capacitor from cop to agndh together with iset determines the pwm and bridge frequency 9 flag indication of cdm-lamp state - flag = high impedance => standy or low power mode - flag = low => start up phase - flag changes between high and low impedance => ignition phase 10 act connection with v5v activates the power mos driver, connection with pgnd or open deactivates the power mos driver 11 agndr ground connection for analog circuitry in the pfc part 12 nc 13 nc 14 nc 15 en a high level enables the ic and starts operation a low level puts the ic into standby (reduced power consumption) 16 v5v internally generated 5v power supply for analog and digital stages, may also feed external devices 17 vs main supply for the ic, input voltage range 14.5v to 35v 18 v15v internally generated 15v power supply for pfc and cdm drivers, may feed external devices 19 drv pfc power mos driver output 20 nc 21 pgnd driver ground 22 sub substrate, connect to pgnd 23 pwmp additional power mos driver supplied with v15v, activated when pin act is connected to v5v 24 nc 25 nc 26 cs current sense = peak current detection of pfc 27 zcd zero current sense input for pfc inductor 28 pi mains voltage phase sense input AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 8 of 23
AMG-LM302 ballast controller for metal halide lamps pin # symbol description 29 vref 2.5v internal vref, may also be used for external circuitry, needs a c 30 pof pfc voltage control input 31 po pfc phase control input 32 cp compensation output for pfc regulation low pass filter (20hz) 33 bdis bdis=h: disables the full bridge for the lamp, all driver outputs = l 34 br output to drive low and corresponding high side of the bridge 35 nbr inverted br, drives other low and high side (dead time inserted automatically) 36 nc 37 nc 38 cdt capacitor (connected to agndh) sets dead time of the mosfets 39 pwmo pwm output of the hv-driver for the buck power mos 40 nc 41 ipk current mode control input for pwm driver of cdm part limiting the peak driver current 42 iouti monitors the lamp current with a sense resistor, lamp power is calculated using iouti*vouti 43 nc 44 vouti voltage divider input to sense the lamp voltage with respect to agndh (99:1) 45 vouts resistor to convert v out in to a related current 46 ctrlo this control output generates the feedback for the error amplifier. output depends on the operating mode (lamp current or power) 47 fb feedback input (actual value) to the error amplifier 2.5v (set value) is the other input to the error amplifier 48 nc 1) 7. absolute maximum ratings the absolute maximum ratings may not be exceeded under any circumstances. # symbol parameter min max unit 1 vs supply voltage -0.3 37 v 2 v15v internal supply voltage -0.3 18 v 3 v5v internal supply voltage -0.3 6.2 v 4 iout_s power supply output current v15v, v5v -5 0.01 ma 5 i drv ; i pwmp driver peak current -800 800 ma AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 9 of 23
AMG-LM302 ballast controller for metal halide lamps # symbol parameter min max unit 6 e drv ; e pwmp driver peak energy 5 j 7 vinp_hv high voltage input en -0.3 vs+0.3 v 8 v flag_h open drain high voltage -0.3 vs+0.3 v 9 i flag_l flag on current -1.0 5.0 ma 10 vinp_lv low voltage input pi, cs, po, pof, ipk, cop, act, cdt, rtu, rtd, cm3, rmp, fb, iouti, vouti, vouts -0.3 v5v+0.3 v 11 iinp_zcd input current zcd -10 10 ma 12 ioutp_hv high voltage control output br, nbr, pwmo, bdis -1.0 1.0 ma 13 ioutp_lv low voltage control output cp, comp, ctrlo, vref -5.0 5.0 ma 14 v iset bias adjust input voltage -0.3 v5v+0.3 v 15 i iset bias adjust input current -200 1 a 16 agndh agndp pgnd ground voltages related to substrate (sub) -0.3 0.3 v 17 t stg storage temperature -65 150 c 18 rthja thermal resistance junction to ambient tbd k/w 19 v esd esd rating 1 kv AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 10 of 23
AMG-LM302 ballast controller for metal halide lamps 8. electrical characteristics 8.1. operational range # symbol parameter min max unit 1 vs supply voltage 14.5 35 v 2 t a ambient temperature range -25 85 c note: 8.2. dc characteristics dc characteristics contain the spread of values guarantee within the specified supply voltage and temperature range and the technology process parameter range unless otherwise specified. r iset =500k ?0.5%; cop=180pf0.5%; r po =r pc =10 k ?0.5%; r fc =r fb =10 k ?0.5%; v en =vs; v act =0v; r vouta =r voutb =r voutc =10k?0.5%; rtd=69.5k; rtu=250k typical characteristics represent the medium of production at vs=27v; ta=25c # symbol parameter conditions min typ max unit section: general (g) subsection: supply 1 i vs operating supply current tbd tbd ma 2 i vs_stby standby current v en =0v or vs=7v 1.0 ma 3 v v15v internal dc voltage 15v vs=16.5v to 35v; i v15v =-5ma -10% 15 +10% v 4 v v15v_drop vs-v v15v vs=8v ... 16.5v; i v15v =-5ma 1.5 v 5 v v5v internal dc voltage 5v -10% 5 +10% v subsection: over temperature 6 t jot thermal shutdown junction temperature 130 c subsection: under voltage lockout (uvlo) 7 v vs_on vs turn on threshold 24 v 8 v v15v_off v15v turn off threshold 8.5 10.5 v subsection: enable (en) 9 v en_h ic enable 3.0 v 10 v en_l ic disable 1.5 v 11 v en_hys switch hysteresis 500 mv 12 i en en input current v en =0v -15 -5 a AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 11 of 23
AMG-LM302 ballast controller for metal halide lamps # symbol parameter conditions min typ max unit 13 i en en input current v en =vs -1 1 a subsection: lamp monitoring 14 v flag_l flag low output voltage i flag =5ma 0.5 0.8 v 15 i flag_h flag high leakage current v flag =vs -5 5 a subsection: reference voltage 16 v ref reference for pfc andhid -3% 2.5 +3% v 17 v ref+i reference load capability i ref =+5ma 2.5 2.7 v 18 v ref-i i ref =-5ma 2.3 2.5 v 19 v fb reference for lamp volta-ge regulation: 2.5v tbd tbd 2.5 tbd v 20 v iset biasing reference voltage tbd 2.5 v section: power factor correction (pfc) subsection: over voltage lockout (ovlo) 21 v pof_ovlo ovlo threshold 2.5 v 22 v ovlo-hys ovlo hysteresis 200 mv subsection: hid enable (bdis) 23 v pof_bdis hid and bridge enable threshold 2.0 v 24 v bdis-hys hid and bridge enable hysteresis 800 mv 25 v bdis_h output high voltage, bridge disabled i bdis =-2ma v15v -1.5 v 26 v bdis_l output low voltage, bridge enabled i bdis =2ma 1.5 v 27 v pof_bdis hid and bridge enable threshold 2.0 v subsection: pfc multiplier 28 v pi linear input voltage 3 v 29 m g multiplier gain v pi =0.5v; v cp =3v 1.07 v -1 30 m r multiplier ratio v cs / v pi @r pk_pfc =1ohm v pi =0v ... 0.5v; v cp =4.7v 3.2 a/v v pi =0v ... 1.0v; v cp =2.5v 1.6 a/v subsection: pfc current sense 31 v cs upper sense clamp reference v cp =4.7, v pi =1.0v 1.75 v 32 i cs input bias current v cs =1v -1 1 a 33 v cs_offs (dc) sense offset voltage 10 mv 34 t trans transition time to drv v cp =4.7v, v pi =1.0v, c drv =2.2nf 250 ns subsection: pfc error amplifier 35 v po feedback input threshold 2.5 v AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 12 of 23
AMG-LM302 ballast controller for metal halide lamps # symbol parameter conditions min typ max unit 36 i po input bias current -1 1 a 37 a v voltage gain open loop 60 db 38 i cp_l pos. current capability v cp =2.5v; v po =3.25v 3 ma 39 i cp_h neg. current capability v cp =2.5v; v po =1.75v -2 ma 40 v cp_h upper output voltage limit i cp =-0.5ma v5v- 1.0 v 41 v cp_l lower output voltage limit i cp =0.5ma 1.0 v subsection: zero current detector (zcd) 42 v zcd_clh upper clamp voltage i zcd =3ma 3.2 4.5 v 43 v zcd_cll lower clamp voltage i zcd =-3ma 0.5 1.7 v 44 v zcd_th zcd threshold 2.5 v 45 i zcd_c pos. current capability 7 ma 46 i zcd_c neg. current capability -10 ma subsection: pfc driver 47 v drv_h driver output high drop voltage related to v15v i drv =-20ma 0.5 v 48 v drv_h driver output high drop voltage related to v15v i drv =-200ma 2.0 v 49 v drv_l driver output low voltage i drv =20ma 0.3 v 50 v drv_l driver output low voltage i drv =200ma 1.5 v 51 i drv_pk driver peak current 2.2nf from drv to pgnd 400 ma 51 i drv_dis disable driver current v en =0v or vs=7v; v drv =1v 5 ma section: hid controller (hid) subsection: lamp voltage v/i convert 52 v outi_ov overvoltage threshold 3.45 v 53 v outi_bst ignition try threshold (burst) 2.9 v 54 v outi_ign ignition ok threshold 1.8 v 55 v outi_bu upper break voltage 1.8 v 56 v outi_bd lower break voltage 0.5 v 57 i vouti input current -1 1 a subsection: lamp current v/i convert 58 v iouti constant regulation 625 mv 59 i iouti iouti input current -1 1 a subsection: oscillator 60 i cop_up pull_up current v cop =1v -70 a AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 13 of 23
AMG-LM302 ballast controller for metal halide lamps # symbol parameter conditions min typ max unit 61 i cop_down pull_down current v cop =4v 105 a 62 v cop_thh sawtooth upper threshold 3.33 v 63 v cop_thl sawtooth lower threshold 1.67 v subsection: hid error amplifier 64 v fb feedback voltage closed loop 2.5 v 65 i fb fb input current -1 1 a 67 v comp comp output voltage i comp =-2ma; closed loop 2.0 v 68 v comp comp output voltage i comp =3ma; closed loop 3.0 v 69 v comp_h comp high output voltage i comp =-0.5ma; v fb =2v v5v- 1.0 v 70 v comp_l comp low output voltage i comp =0.5ma; v fb =3v 1.0 v subsection: pulse width modulator (pwmo) 71 dc max maximum duty cycle 50 % 72 dc min minimum duty cycle 1.5 2.3 5 % 73 v ipk_max maximum i pk voltage 1.25 v 74 v ipk_oc over current i pk voltage 2.5 v 75 v pwmo_h output high voltage i pwmo =-2ma v15v -1.5 v 76 v pwmo_l output low voltage i pwmo =2ma 1.5 v subsection: hid driver (pwmp) 77 v pwmp_h driver output high drop voltage related to v15v i pwmp =-20ma; v act =v5v 0.5 v 78 v pwmp_h driver output high drop voltage related to v15v i pwmp =-200ma; v act =v5v 2.0 v 79 v pwmp_l driver output low voltage i pwmp =20ma; v act =v5v 0.3 v 80 v pwmp_l driver output low voltage i pwmp =200ma; v act =v5v 1.5 v 81 i pwmp_pk driver peak current 2.2nf from pwmp to pgnd; v act =v5v 400 ma 82 i pwmp_dis disable driver current v en =0v or vs=7v; v pwmp =1v 5 ma 83 v act_h pwmp driver activated 3.5 v 84 v act_l pwmp driver deactivated 1.5 v 85 i act pull down current v act =5v 10 a subsection: acoustic bridge driver 86 v br_h output high voltage i br =-2ma v15v -1.5 v 87 v br_l output low voltage i br =2ma 1.5 v 88 v nbr_h output high voltage i nbr =-2ma v5v- 1.5 v AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 14 of 23
AMG-LM302 ballast controller for metal halide lamps # symbol parameter conditions min typ max unit 89 v nbr_l output low voltage i nbr =2ma 1.5 v subsection: power scale 90 v rmp reference voltage for power scale resistor 2.5 v subsection: adjustable voltage threshold 91 v rtd upper reference voltage for adjustable monitor resistor 2.5 v 92 v rtu lower reference voltage for adjustable monitor resistor 2.5 v 8.3. ac characteristics ac characteristics contain the spread of values guarantee within the specified supply voltage and temperature range and the technology process parameter range unless otherwise specified. r iset =500k ?0.5%; cop=180pf0.5%; r po =r pc =10 k ?0.5%; r fc =r fb =10 k ?0.5%; v en =vs; v act =0v; r vouta =r voutb =r voutc =10k?0.5%; rtd=69.5k; rtu=250k typical characteristics represent the medium of production at vs=27v; ta=25c # sym bol parameter conditions min typ max uni t 1 tr _drv pfc driver output rise time c drv =2.2nf 50 ns 2 tf _drv pfc driver output fall time c drv =2.2nf 50 ns 3 f drv pfc frequency range over one mains period 20 20 120 khz 4 f osc oscillator frequency cop=100pf 240 khz 5 tr _pwmo pwm output rise time c pwmo =100pf 100 ns 6 tf _pwmo pwm output fall time c pwmo =100pf 100 ns 7 tr _pwmp pwm power output rise time c drv =2.2nf 50 ns 8 tf _pwmp pwm power output fall time c br =100pfc drv =2.2nf 50 ns 9 f pwmo pwm switch frequency c br =100pfc drv =2.2nf 8 osc f khz 10 f br_ig n ignition resonance frequency c br =100pfc drv =2.2nf 2 osc f khz 11 tr _br bridge driver output rise time c br =100pfc drv =2.2nf 100 ns 12 tf _br bridge driver output fall time c br =100pf 100 ns 13 f br_a bridge acoustic switch frequency 11 2 osc f hz 14 t it_on ignition burst enable time s AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 15 of 23
AMG-LM302 ballast controller for metal halide lamps # sym bol parameter conditions min typ max uni t 15 t it_off ignition burst disable time osc f 23 2 s 16 n ip number of ignition pulses for one burst osc f 23 2 17 t ib ignition burst repeat rate 10 s 18 t ti total ignition trial time osc f 10 2 s 19 t btm lamp voltage monitor block time after ignition (tracking timer) osc f 24 2 * 17 s AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 16 of 23
AMG-LM302 ballast controller for metal halide lamps 9. flow chart n enable to on? power on dc diagnosis enable to on? all dc ok vs > 24v vref -> on ot -> ok v5v -> ok durable watch: restart break v15v< 9.5v m0 - initial mode: restart the flow by power supply error generate v pfc =400v bridge disabled v pfc > 350v m1 - pfc on mode: m2 - cdm charge mode: generate v out =350v bridge phase "0" i out > i igns (1a) v out < 160v m3 - ignition mode: lamp current 2.6a bridge phase "3" f sw =100hz r ml set i out =2.6a m4 - overdrive mode: p out < 150w lamp power 150w bridge phase "3" f sw =100hz rm p set p=150w const. regulation v out > 5 0v v out < 160v rtu set v out_th =50v rtd set v out_th =160v m5 - steady-state mode: n y n y n y y v pfc runs to 400v. if v pfc will be reach 350v the flow switched in the next mode the cmd lamp is ignite successful when the lamp voltage is lower than 160v function flow chart cdm description working mode overdrive mode (m4) stabilize the plasma of the lamp arc with a constant current. the voltage across the lamp is a function of the lamp temperature. if the lamp power is equal 150w the lamp slides to the next mode. ot -> fail calculate: p out =i out *v out tw > 1200s y tw=1200s (dig. timer) rtd set v out_th =160v break the flow by over temperature monitoring the state of the hid lamp in the course of the steady- state continuous operation the lamp controller start to charge the vout up to v pfc for lamp ignition n burst 4kv y n m1 m4 m2 m3 phase "0" - m3, m4 on phase "1" - m1, m4 on phase "2" - m2, m3 on phase "3" - m1,m4/m2,m3 switching bridge phase: i out > i short n y a short circuit will be detected continuous. if i out > i short jump the flow directly to break. burst for lamp ignition will be pulsed for a duration of 1200s. after this time without ignition goes the flow to break. steady-state mode (m5) is power constant mode. zeichenblatt-1 _09.03.09 flag=h flag signalize the lamp state: - h -> break phase - l -> pfc + hid charge phase - blink -> ignition phase - h -> steady-state v out > 290v y n ignition try start if v out is higher than 290v bridge phase "3" f sw =100hz each slop starts n pulses@f sw =125khz; (in this case the used p lamp =150w) start tw > 300s y tw=300s (dig. timer) successfull ignition starts 300s tracking timer to test the lamp voltage v out . is fail goes the flow to break. standby --> currentless break the flow by detection of a fundamental error new start by switch off, on the mains voltage or by en --> AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 17 of 23
AMG-LM302 ballast controller for metal halide lamps 10. timing diagrams v t v pfc vs v5v 400v 350v 35v 24v 5v all dc ok start pfc start vout 15v bdis br nbr ~ ~ ~ ~ ~ ~ +350v v out lamp ignition v lamp burst (10-pulses) br=h: 4ms nbr=h: 4ms 15v v p / i p lamp i lamp start-up constant current mode ignition mode constant power mode steady state mode with constant power regulation 4kv duty cycle =50% t t t t wf1_k2f_10.03.09 330v 160v vout 290v -350v dc mode ~ ~ 50v ignition detected v rtd v rtu observation window after 300s trecking time 15v v15v AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 18 of 23
AMG-LM302 ballast controller for metal halide lamps 11. application the chip set AMG-LM302 and amg-df102 are suitable to drive 11.1. example application circuit(s) 11.2. calculating pfc parameters 1) startup resistor (6.2-g.2): 3 _ _ _ 10 = pk rmain stby vs pk rmain start v i v r 2) input phase voltage divider (6.2-pfc-5): pk rmain pi pi pi v r r r _ 2 1 2 3 + 3) vs voltage limitation (6.1-1): max vs v zd 4) output phase voltage divider: pfc p po po v r r r 5 . 2 02 1 2 = + 5) frequency compensation: tbd c po = AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 19 of 23 figure 2 : example application circuit
AMG-LM302 ballast controller for metal halide lamps 6) over voltage and pfc ready voltage divider ov pfc pof pof pof v r r r _ 2 1 2 5 . 2 = + 7) pfc current sense resistor (6.2-pfc-9): pfc pk pfc pk cl cs pfc pk i i v r _ _ _ _ 75 . 1 = 11.3. calculating hid parameters 1) biasing resistor: w = k r iset 510 2) lamp voltage divider: 100 1 = + voutb voutc voutc r r r w = k r vouta 10 3) cdm current sense resistor: overdrive overdrive iouti ml i i v r 625 . 0 = = 4) power scale resistor: ml lamp mp r p r = 6 10 906 . 3 5) oscillator capacitor: ( ) thl cop thh cop up cop down cop osc down cop up cop v v i i f i i cop _ _ _ _ _ _ ) ( - - = iset osc r f cop = 6 . 12 6) upper true voltage threshold: th out td v r _ 7 10 25 . 1 = for v v th out 160 _ = 7) lower true voltage threshold: th out tu v r _ 7 10 25 . 1 = for v v th out 50 _ = 8) bridge dead time capacitor dt t cdt ? - 5 10 67 . 1 9) capacitor and resistor for frequency compensation at f pwmo =31khz w = k r q 100 tbd r f = tbd c f = 1 tbd c f = 2 AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 20 of 23
AMG-LM302 ballast controller for metal halide lamps 11.4. application notes amg-an-lm302 12. ic-package tqfp48 (7*7, 48l) s y m b o l ms-026 n o t e s abc square min nom max a 1.00 1.10 1.20 a1 0.05 0.10 0.15 a2 0.95 1.00 1.05 d 9.00 bsc d1 7.00 bsc e 9.00 bsc e1 7.00 bsc n 48 e 0.50 bsc b 0.17 0.22 0.27 b1 0.17 0.20 0.23 tolerance of form and position ccc 0.08 ddd 0.08 13. ic-marking lm302 4 digits date code = 2 digits year + 2 digits work week 8 digits lot number = 2 digits fab process + 4 digits lot number + 1 digit sub lot AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 21 of 23
AMG-LM302 ballast controller for metal halide lamps 14. ordering information AMG-LM302 -itq48t shipment in trays 15. notes and cautions 15.1. esd protection the requirements for handling electrostatic discharge sensitive devices are described in the jedec standard jesd625-a. please note the following recommendations: ? when handling the device, operators must be grounded by wearing a for the purpose designed grounded wrist strap with at least 1m resistance and direct skin contact. ? operators must at all times wear esd protective shoes or the area should be surrounded by for esd protection intended floor mats. ? opening of the protective esd package that the device is delivered in must only occur at a properly equipped esd workbench. the tape with which the package is held together must be cut with a sharp cutting tool, never pulled or ripped off. ? any unnecessary contact with the device or any unprotected conductive points should be avoided. ? work only with qualified and grounded tools, measuring equipment, casing and workbenches. ? outside properly protected esd-areas the device or any electronic assembly that it may be part of should always be transported in egb/esd shielded packaging. 15.2. storage conditions the AMG-LM302 corresponds to moisture sensitivity classificatio n ml2 , according to jedec standard j-std-020, and should be handled and stored according to j-std-033. 16. disclaimer information given in this data sheet is believed to be accurate and reliable. however, no responsibility is assumed for the consequences of its use nor for any infringement of patents or other rights of third parties that may result from its use. the values stated in absolute maximum ratings may under no circumstances be exceeded. no warranty is given for use in life support systems or medical equipment without the specific written consent of alpha microelectronics gmbh. for questions regarding the application please contact the publisher. the declared data are only a description of the product. they are not guaranteed properties as defined by law. examples are given without obligations and cannot give rise to any liability. reprinting of this data sheet C or any part of it C is not allowed without the license of the publisher. data sheets are subject to change without any notice. AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 22 of 23
AMG-LM302 ballast controller for metal halide lamps 17. contact information this data sheet is published by alpha microelectronics gmbh. to order samples or inquire information please contact: alpha microelectronics gmbh im technologiepark 1 15236 frankfurt (oder) germany am.info@alpha-microelectronics.de www.alpha-microelectronics.de +49-335-557-1750 (telephone) +49-335-557-1759 (fax) ? all rights reserved. AMG-LM302 revision: a 29. jul. 2010 ? all rights reserved page 23 of 23

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