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rev.4.00 jun 15, 2005 page 1 of 19 ha16341nt/fp, ha16342nt/fp redundant secondary switching power supply controller rej03f0148-0400 (previous: ade-204-035c) rev.4.00 jun 15, 2005 description the ha16341nt/fp and the ha16342nt/fp are switching regul ator control ics for the off-line converters of redundant power supplies. the ha16342nt/fp is reverse current detection less version of the ha16341nt/fp. the ha16341nt/fp have the functions of current sharing and hot swap control for redundancy. these functions enable high efficiency and high reliability for switching power supplies. combination the ha16341 with the ha16141 is suitable for the redundant ac to dc converters. features ? secondary-side synchronous rectification control ? main switching controller ? dead-time adjustment for sy nchronous rectification mos ? current share function with line resistance compensation ? hot swap power mos fet control ? remote on/off function, fail output function ? synchronized switching with primary side ? soft start function ? maximum duty adjustment ? overcurrent limiting, overcurrent shutdown functions ? reverse current detection (only the ha16341nt/fp) ? light load detection ? ovp function ? vcc pin uvl function ordering information type no. package code ha16341nt ha16342nt dp-24ts HA16341FP ha16342fp fp-26dt
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 2 of 19 pin arrangement 1 2 3 4 5 7 8 9 10 11 6 tab 12 cf(+) cf(?) cfo cfb ein mf out vcc mr out pwm out hsp eout pgnd vref 24 23 22 21 20 18 17 16 15 14 19 tab 13 cs(+) cs(?) mt cb cin sgnd pg1 fail trig ct ss pgnd db (top view) (top view) ha16341nt, ha16342nt (dp-24ts) HA16341FP, ha16342fp (fp-26dt) 1 2 3 4 5 8 9 10 11 12 6 tab 13 cf(+) cf(?) cfo cfb ein mf out vcc mr out pwm out hsp eout pgnd vref 26 25 24 23 22 19 18 17 16 15 21 20 tab 14 cs(+) cs(?) mt cb cin sgnd 7p g n d pgnd pg1 fail trig ct ss pgnd db pin functions pin no. dp-24ts fp-26dt symbol pin name 1 1 cs(+) current sense amp input (+) 2 2 cs( ? ) current sense amp input (?) 3 3 mt current sense amp output 4 4 cb current bus output 5 5 cin line resistance compensation input 6 6 sgnd signal ground 7 8 pg1 remote on/off 8 9 fail fail output (open-drain) 9 10 trig external synchronization input 10 11 ct timing capacitance 11 12 ss soft start 12 13 db dead band 13 14 vref vref (5 v) 14 15 hsp hot swap output 15 16 pwm out pwm output 16 17 mr out mr output 17 18 vcc power supply voltage 18 19 mf out mf output 19 21 eout error amp output 20 22 ein error amp input 21 23 cfb current share feedback output 22 24 cfo current share differential amp output 23 25 cf(?) current share differential amp input (?) 24 26 cf(+) current share differential amp input (+) tab tab, 7, 20 pgnd power ground
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 3 of 19 block diagram ? + op1 19r 26db 6db 0db 1.187v e/in ocl point b current share input to latch b reset r r pg1 r tab ein eout cfb cf(+) cf(?) mf out vcc mr out db pg1 cfo pgnd fail unit r: ? c: f cs(+) cs(?) mt cb cin sgnd hsp pwm out vref ss ct pgnd trig start-up latch initial: lo start-up latch initial: hi db generator e/in = 95% comp. error amp. reverse current comp. (only ha16341) ocl ovp uvl1 fail ss comp. rs-ff rs-ff 939a 169a sw1 sw1 on: 1.3v sw1 off: 3.4v uvl2 exit trigger control oscillator dead band adjust light load detector ? + op6 ? + op2 ? + op1-2 ? + ? + tab op3 ? + op4 ? + ? + ct level compression ct' + ? + latch a s qr rs-ff latch b s q r latch c s r q q latch d s r q q ?12mv cs(+) 1.25v from b ? + 2.5v vref 5v vref 5v hi: stop 100k from trig driver driver 128.5k delay ? + ? + ? + vref uvl2 1.25v hi: 0.7v lo: 0.5v hi: pwm on 2r r v z = 6.8v pg1 + ? 7.5v + ? + ? hi: 2.5v lo: 2.0v 1.25v 1.25v ? + + ? op5 0db v z = 1.24v 50k 10k 90k r r 1k 1k r + ? 20db 2r 2r 2r 2r driver driver s1 s2 16 pulse delay sw2 on at hsp hi sw2
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 4 of 19 absolute maximum ratings (ta = 25 c) item symbol ratings unit note supply voltage vcc 18 v dc output current1 io1 0.1 a pwm out * 1 peak output current1 iopeak1 1.0 a pwm out * 2 dc output current2 io2 0.2 a mf out * 1 peak output current2 iopeak2 2.0 a mf out * 2 dc output current3 io3 0.1 a mr out * 1 peak output current3 iopeak3 1.0 a mr out * 2 dc output current4 io4 ? ma cb out dc output current5 io5 500 a cfb out dc output current6 io6 20 ma fail out dc output current7 io7 ?5.0 ma vref out peak output current4 iopeak4 0.5 a hsp sink dc output current8 io8 500 a mt out dc output current9 io9 500 a cfo out dc output current10 io10 6 ma eout sink trig terminal voltage vtrigmax ?1.5 to v cc v ct terminal voltage vctmax ?0.3 to vref v vref terminal voltage vrefmax ?0.3 to vref v ss terminal voltage vssmax ?0.3 to vref v ein terminal voltage veinmax ?0.3 to vref v eout terminal voltage veoutmax ?0.3 to v cc v pg1 terminal voltage vpg1max ?0.3 to vref v fail terminal voltage vfailmax ?0.3 to v cc v pwm out terminal voltage vopwmmax ?0.3 to v cc v mr out terminal voltage vomrmax ?0.3 to v cc v mf out terminal voltage vomfmax ?0.3 to v cc v hsp terminal voltage vohspmax ?0.3 to v cc v cfb terminal voltage vcfbmax ?0.3 to vref v cs(+) terminal voltage vcs(+)max ?0.3 to vref v cs(?) terminal voltage vcs( ? )max ?0.3 to vref v mt terminal voltage vmtmax ?0.3 to vref v cin terminal voltage vcinmax ?0.3 to vref v notes: 1. v ds = 10 v max. therefore test condition must be v oh = v cc ?10 v or over , v ol = 10 v or under. 2. v ds = 10 v max. pulse duration 10 ms
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 5 of 19 absolute maximum ratings (cont.) (ta = 25 c) item symbol ratings unit note cf(+) terminal voltage vcf(+)max ?0.3 to vref v cf(? ) terminal voltage vcf( ? )max ?0.3 to vref v cfo terminal voltage vcfomax ?0.3 to vref v cb terminal voltage vcbmax ?0.3 to vref v db terminal voltage vdbmax ?0.3 to vref v maximum power dissipation p t 4.17 w 1 operating temperature topr ?40 to +105 c storage temperature tstg ?55 to +150 c junction temperature tj 150 c note: 1. this is allowable value up to ta = 25 c. derate by j-a = 30 c/w above that temperature. j-a = 30 c/w is the case that ha16341nt is mounted on 30% wiring density glass epoxy board (105 mm 76.2 mm 1.6 mmt) and HA16341FP is mounted on a board which thermal resistance is 23 c/w because of j-pin (sop) = 7 c/w typ. 5.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.17 4.5 maximum power dissipation p t (w) ambient temperature ta (c) ? 50 ? 30 ? 10 17015013011090705030 10
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 6 of 19 electrical characteristics (ta = 25 c, vcc = 12v, pg1 = 3v, vtrig = 0v, vcs(+) = 0v, vcin = 0v, cct = 330pf, gvop1 = 26db, gvop4 = 40db, rdb = 1.8k ? ) ? current share item symbol min typ max unit test conditions note cb output hi voltage vcbh 2.5 ? ? v iosource = 300 a vcs(+) = 1v cb output lo voltage vcbl ? ? 25 mv vcs(+) = 0v, rcb = 10k ? cfb output lo voltage vcfbl ? ? 100 mv iosink = 100 a, hsp on vcs(+) = 0v, vcb = 0.1v cfb output typ voltage vc fbtyp 1.19 1.25 1.31 v vcs(+) = 0v, vcb = 0v rfop4 = 1k ? , hsp on op1 input offset voltage vioop1 ? ? (1) mv 1 cs(+) input bias current iibcs(+) ? ?20 ?30 a vcs(+) = 0v, vcs(?) = 0v cs( ? ) input bias current iibcs( ? ) ? 0.2 1.0 a vcs(+) = 0v, vcs(?) = 0v cin input bias current iibcin ? 0.2 1.0 a vcin = 0v op4 input resistance rsin 0.75 1.00 1.25 k ? 1, 2 open loop gain op1 ? op6 avo (70) 80 ? db 1 band width op1 ? op6 bwcs ? 700 ? khz 1 ocl detector threshold voltage vthocl 59.5 62.5 65.5 mv cs(+) terminal voltage sensing light load detector threshold hi voltage vthhll (2.0) 3.5 (5.0) mv cs(+) terminal voltage sensing 1 light load detector threshold lo voltage vthlll (1.0) 2.5 (4.0) mv cs(+) terminal voltage sensing 1 vthll hysteresis dvthll (0.5) 1.0 (1.5) mv 1 reverse current detector threshold hi voltage vthrc ?6 ?12 ?18 mv cs(+) terminal voltage sensing 3 notes: 1. design spec. 2. temperature coefficient is 5400ppm/ c. 3. only ha16341nt/fp. ? hot swap item symbol min typ max unit test conditions note hsp on threshold voltage vthhsp 1.14 1. 19 1.23 v 95% typ of reference 1.25v hsp charge current ichsp ?7 ?10 ?13 a vhsp = 5v, vein = 2v hsp output lo voltage volhsp ? 0.3 0.6 v vein = 1v, iosink = 50ma
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 7 of 19 electrical characteristics (cont.) (ta = 25 c, vcc = 12v, pg1 = 3v, vtrig = 0v, vcs(+) = 0v, vcin = 0v, cct = 330pf, gvop1 = 26db, gvop4 = 40db, rdb = 1.8k ? ) ? oscillator item symbol min typ max unit test conditions note typical oscillating frequency fosctyp 180 200 220 khz 10% maximum oscillating frequency foscmax 400 ? ? khz typical oscillating temperature stability dfosc ? 5 ? % ?20 c < ta < 85 c 1 ct charge current ici ?135 ?169 ?203 a 20% ct discharge current icd 616 770 924 a 20% upper trip point vthcth ? 3.4 ? v 2 lower trip point vthctl ? 1.3 ? v amplitude dvct ? 2.1 ? v exit trigger vth vtht rig ?0.3 ?0.5 ?0.7 v notes: 1. design spec. 2. in case of external trigger control, cct should be changed from 330 pf to 430 pf. at this synchronous and 430 pf cct condition vthcth becomes about 2.9 v. ? vref item symbol min typ max unit test conditions note reference voltage vref 4.9 5.0 5.1 v iosource = 1ma 2% line regulation vref-line ? 5 20 mv iosource = 1ma 12v < v cc < 18v load regulation vref-load ? 5 20 mv 0 < iosource < 3ma temperature stability dvref ? 80 ? ppm/ c ?20 c < ta < 85 c 1 note: 1. design spec. ? uvl item symbol min typ max unit test conditions note hi threshold voltage vh 9.5 10.0 10.5 v lo threshold voltage vl 8.5 9.0 9.5 v hysteresis dvuvl 0.6 1.0 1.4 v
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 8 of 19 electrical characteristics (cont.) (ta = 25 c, v cc = 12v, pg1 = 3v, vtrig = 0v, vcs(+) = 0v, vcin = 0v, cct = 330pf, gvop1 = 26db, gvop4 = 40db, rdb = 1.8k ? ) ? pg1 item symbol min typ max unit test conditions note pg1 threshold hi voltage vt hhpg1 2.4 2.5 2.6 v pg1 threshold lo voltage vt hlpg1 1.9 2.0 2.1 v input impedance rinpg 1 (37.5) 50.0 (62.5) k ? 1 note: 1. design spec. ? fail item symbol min typ max unit test conditions note leak current ileakfail ? ? ?10 a vfail = 5v output lo voltage volfail ? ? 0.5 v iosink = 10ma ? error amp. item symbol min typ max unit test conditions note input threshold voltage vthein 1.23 1.25 1.27 v veout = 1.25v 1.6% input bias current iibein ? ?0.2 ?2.0 a vein = 2v open loop gain avoea 60 80 ? db band width bwea (0.7) 1.4 ? mhz 1 eout sink current iosinkea 0.5 5.0 ? ma vein = 1.5v, eout = 1.1v eout source current iosourceea ?100 ?250 ? a vein = 1.0v, eout = 5v eout clamp voltage vohea 5. 8 6.8 7.8 v vein = 1.0v eout lo voltage volea ? ? 1. 0 v vein = 1.5v, iosink = 200 a note: 1. design spec. ? pwm out item symbol min typ max unit test conditions note output lo voltage volpwm ? 0.2 0.4 v iosink = 100ma output hi voltage vohpwm v cc ? 0.4 v cc ? 0.2 ? v iosource = 100ma rise time trpwm 20 50 100 ns cl = 3300pf fall time tfpwm 20 50 100 ns cl = 3300pf maximum duty dmax 58 65 72 % vss = 4v, vein = 1.0v minimum duty dmin ? ? 0 % vss = 4v, vein = 1.5v note: 1. design spec.
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 9 of 19 electrical characteristics (cont.) (ta = 25 c, v cc = 12v, pg1 = 3v, vtrig = 0v, vcs(+) = 0v, vcin = 0v, cct = 330pf, gvop1 = 26db, gvop4 = 40db, rdb = 1.8k ? ) ? mr out item symbol min typ max unit test conditions note output lo voltage volmr ? 0.2 0.4 v iosink = 100ma output hi voltage vohmr vcc ? 0.4 vcc ? 0.2 ? v iosource = 100ma rise time trmr 20 50 100 ns cl = 3300pf fall time tfmr 20 50 100 ns cl = 3300pf ? mf out item symbol min typ max unit test conditions note output lo voltage volmf ? 0.2 0.4 v iosink = 200ma output hi voltage vohmf vcc ? 0.4 vcc ? 0.2 ? v iosource = 200ma rise time trmf 20 50 100 ns cl = 6000pf fall time tfmf 20 50 100 ns cl = 6000pf ? dead band time item symbol min typ max unit test conditions note dead band time1 td1typ 0 50 100 ns rdb = 1.8k ? dead band time2 td2typ 0 100 200 ns rdb = 1.8k ? mr to mf delay time t1 ( ? 20) ? (50) ns t1 = mf off ? mr on 1 pwm to mr delay time t2 ( ? 20) ? (50) ns t2 = mr off ? pwm off 1 mr delay time t3 ? 1 ? s t3 = ct low trip point ? mr on 1 maximum dead band adjust time1 tdadj1 ? td1typ +300 ? ns rdb = 47k ? 1 maximum dead band adjust time2 tdadj2 ? td2typ +600 ? ns rdb = 47k ? 1 note: 1. design spec. measurement is 50% slice point.
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 10 of 19 electrical characteristics (cont.) (ta = 25 c, v cc = 12v, pg1 = 3v, vtrig = 0v, vcs(+) = 0v, vcin = 0v, cct = 330pf, gvop1 = 26db, gvop4 = 40db, rdb = 1.8k ? ) ? ss item symbol min typ max unit test conditions note ss sink current idss 500 ? ? a pg1 = 2v, vss = 2v ? ovp item symbol min typ max unit test conditions note ovp latch voltage vovp 6.5 7.5 8.5 v ? current consumption item symbol min typ max unit test conditions note operating current icc 5.4 7.4 9.4 ma vct = 1v standby current istby ? 200 600 a vcc = 8v, pg1 = 0v
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 11 of 19 timing chart 1 (total) vcc vref (5v typ) pg1 (by switch) uvl2 (internal) ss ct out (pwm) ein out (hsp) note: 1. the output of pwm, mr and mf do not appear in the first period of ct cycle due to start-up latch circuit. uvl1 hi 10.0v typ uvl1 lo 9.0v typ uvl2 threshold 4.6v typ 0v 0v 0v 0v 0v 0v 0v 0v 0v 3v vth cth : 3.4v typ vth ctl : 1.3v typ 1.25v (100%) 1.187v (95%) on off on note 1
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 12 of 19 timing chart 2 (hot swap) pg1 uvl2 (internal) ein internal latch signal : node s2 in block diagram hsp out note: reverse current is ha16341nt/fp only. internal latch signal (inverting) (ovp, ocl or reverse current) : node s1 in block diagram 0v 3v 0v 0v 0v 0v 0v 1.25v (100%) 1.187v (95%) gate charging by 10a source current gate discharging by 0.5a max sink current vref 0v set reset
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 13 of 19 timing chart 3 (dead band control) td1 ct pwm out mr out mf out v ss t3 t2 td1, td2 (ns) 0 800 600 400 200 700 500 300 100 td2 vref db ha16341 r db 05 0 40 30 r db (k?) 20 10 note: v ss determines maximum duty. this waveform example shows the case of ein = lo. v ss : voltage of ss pin t1 td1 td2
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 14 of 19 timing chart 4 (soft start) ct ss out (pwm) vth cth : 3.4v note * vth ctl : 1.3v note: self-oscillation: vth cth = 3.4v typ synchronized operation: vth cth = 2.9v typ case v hss vth cth maximum duty would be the value specified in page 9. case v hss < vth cth maximum duty decrease to the corresponding value. please refer to formula 1 as design value of maximum duty. max duty = (tss ? 0.63s ? td1) operating frequency ? ? ? ? ? formula 1 tss = ici c ct vth cth vth ctl : ct charge current : ct terminal capacitor : ct upper trip point : ct lower trip point (v hss ? vth ctl ) c ct ici select values r1, r2 and c1 for suitable maximum duty and ss time constant. ss ss ct vref (5v) ss ha16341 c figure a. ss terminal application r1 r2 r1 + r2 r1 r2 c1 vhss = vref (5v) r2 r1 + r2
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 15 of 19 timing chart 5 (external trigger control) primary ic oscillation primary ic a ux-out trigger input (trig terminal) trigger detector internal signal secondary oscillation trigger vth vtrig: ?0.5v typ 0v 0v 0v 0v 0v primary primary ic aux-out secondary vth cth = about 2.9v @cct = 430pf this ic is triggered by negative pulse. r1 and r2 must be calculated including internal impedance of 230k ?. vref (5v) trig ha16341 figure b. external trigger application r1 r2 230k
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 16 of 19 timing chart 6 (duty control) ct' + vo op1-2 (internal) 1/3(eout?2v be ) (internal) ct' + vo op1-2 300mv 1/3(eout?2v be ) 1/3(eout ?2v be ) 1.24v clamp out (pwm) 5.26v 300mv no output area vo op1-2 (v) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.1 1.3 1.24 1.2 1.0 veout (v) 0 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 0.6 0.3 duty control area in case of 50% max duty max duty area 1.54v 2.44v ct' = the amplitude of ct' is 300mv typ at synchronous operation with trigger frequency as 200khz and c ct = 430pf. ct 5.33
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 17 of 19 timing chart 7 (current limitting) ct' + vo op1-2 (internal) 1/3(eout?2v be ) = 1.24v clamped (internal) out (pwm) 300mv pwm on duty (%) 70 60 50 40 cs(+) (mv) 20 30 0 70 50 20 60 40 30 10 c ct = 430pf, r db = 1.8k?, v hss = 4v synchronized operation with 200khz ct' = the amplitude of ct' is 300mv typ at synchronous operation with trigger frequency as 200khz and c ct = 430pf. ct 5.33
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 18 of 19 timing chart 8 (interface wi th primary control ic) vref pg1 (from primary ic) uvl2 (internal signal) out (pwm) fail (to primary ic) internal latch signal (inverting) (ovp, ocl or reverse current) : node s1 in block diagram set reset note: reverse current is ha16341nt/fp only.
ha16341nt/fp, ha16342nt/fp rev.4.00 jun 15, 2005 page 19 of 19 package dimensions package code jedec jeita mass (reference value) dp-24ts ? ? 2.04 g 0.25 1 ? 13 + 0.10 ? 0.05 5.06 max 10.16 2.54 min 0.51 min 1 12 13 24 27.10 28.10 max 1.0 8.8 10.0 max 1.78 0.25 4.04 0.20 0.48 0.10 1.5 max as of january, 2003 unit: mm package code jedec jeita mass (reference value) fp-26dt ? ? 0.98 g *dimension including the plating thickness base material dimension 0.16 0.10 18.4 19.2 max *0.37 0.08 2.8 3.6 8.3 3.0 max 0.10 + 0.15 ? 0.10 m 26 14 1 13 0.80 *0.32 0.07 10.93 + 0.15 ? 0.25 0 ? 8 0.70 + 0.15 ? 0.20 1.315 1.20 max 0.35 0.06 0.30 0.05 as of january, 2003 unit: mm
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