View MCP19035_8015906.PDF datasheet online --- IC-ON-LINE

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? 2012 microchip technology inc. ds22326a_cn 1 ? MCP19035 ? ? 4.5v 30v ? ? 20a ?????? ? ?????? ? ? ? ????? ? ? ?? f sw 300 khz ? ?? mosfet ? ? ? ??? ? ???? ? ? ? ?? under voltage lockout uvlo ? ?? ? 10 3x3mm dfn ? ? ? ? ? ? dsl ? ? fpga/dsp ?? ? pc ? / ? MCP19035 ?????? ? 30v ???? ? 300 khz ?????????? ??y?? / ? ??????? MCP19035 ?????? mosfet ???? MCP19035 ????????? ???? MCP19035 ? 30v ?? ? 20a ? shdn ?????? ? MCP19035 ????? pwrgd ????? ? MCP19035 3x3 dfn* comp fb v in phase boot 1 2 3 4 10 9 8 7 ldrv hdrv shdn * ??? ep 3-1 ep 11 6 pwrgd +v cc 5 ??
MCP19035 ds22326a_cn 2 ? ? 2012 microchip technology inc. ? c in c out l q 1 q 2 MCP19035 hdrv ldrv phase boot +v cc c boot c vcc +v out shdn v in pwrgd comp fb r 1 r 3 c 1 r 2 c 3 r 4 c 2 +v in on off gnd
? 2012 microchip technology inc. ds22326a_cn 3 ? MCP19035 1.0 ?? ? v in - v gnd .........................................................-0.3v +30v v boot ................................................................-0.3v +36v vhdrv hdrv ...........+v phase -0.3v v boot +0.3v vldrv ldrv .............. + (v gnd -0.3v) (v cc +0.3v) ?? ............. + (v gnd -0.3v) (v cc +0.3v) ? ....................................................... -65c +150c ? ...................................................................... +150c ? esd hbm .................................... 1 kv ? esd mm .....................................200v ? ? ?? ????? ????a ???????? ? Z v in = 12v f sw = 300 khz c in = 1.0 f t a = +25c ?? t a = -40c +125c ?? ? ? ? ? v in 4.5 ? 30 v uvlo v in uvlo on 44.24.4 v uvlo v in ? uvlo off 3.4 3.6 3.8 v uvlo ? uvlo hyst ? 600 ? mv ?? i(v in )?68ma ?? i in_shdn ?2550ashdn = gnd ???? ? ? v cc 4.875 5 5.125 v 6v v in < 30v i vcc-out 50 ? ma 6.5v v in < 30v ? 2 i vcc-out_sc ? ? 100 ma v in = 6v r load < 0.1 ? ?0.1? % ? 1 ? ?0.05? % ? 1 ? ? 0.75 1.3 v i vcc_out = 50 ma ?? psrr ? 70 ? db f 1000 hz i vcc_out = 50 ma c in = 0 f c vcc-out = 4.7 f ? 1 ? ? f sw 255 300 345 khz 4.4 ? ??? v ramp 0.9 1 1.1 v pp ? 1 ? ? v ref 585 600 615 mv ? 1 ???? 2 ???? 3 ??
MCP19035 ds22326a_cn 4 ? ? 2012 microchip technology inc. ? gbp 6.5 10 ? mhz ? 1 a ol 70 80 ? db ? 1 ?? v os -5 0.1 5 mv ? 1 ?? fb ? i bias ??5 na ? 1 ? i sink ?5?ma ? 1 ? i source ?5?ma ? 1 pwm ?? dc max 85 ? ? % ? 1 ? t on(min) 130 ? 240 ns 6v v in < 30v ? 1 ? t ss ?2.6? ms ? ?????? shdn hi 0.75 ? ? v 4.5v v in < 30v ?????? shdn lo ? ? 0.4 v 4.5v v in < 30v ? ?? pg th-h ?9296 v ref ?? ?? pg th-low 88 90 ? v ref ?? ??? pg th-hys ?2? v ref ?? ?? t pg-delay ? 150 ? us v fb = (pg th-hi + 100 mv) (pg th-low ? 100 mv) ?? t pg-time-out ? 120 ? ms v fb = (pg th-hi ? 100 mv) (pg th-hi + 100 mv) mosfet ? r hi-source ?23.5 v boot ?v phase = 4.5v i hdrv = 100 ma ? 1 ? r hi-sink ?23.5 v boot ?v phase = 4.5v i hdrv = 100 ma ? 1 ? r lo-source ?23.5 v cc = 5v ? 1 ? r lo-sink ?12.5 v cc = 5v ? 1 hdrv ? t rh ?1535 ns c load = 1.0 nf ? 1 hdrv ?? t fh ?1535 ns c load = 1.0 nf ? 1 ldrv ? t rl ?1025 ns c load = 1.0 nf ? 1 ? Z v in = 12v f sw = 300 khz c in = 1.0 f t a = +25c ?? t a = -40c +125c ?? ? ? ? ? 1 ???? 2 ???? 3 ??
? 2012 microchip technology inc. ds22326a_cn 5 ? MCP19035 ldrv ?? t fl ?1025 ns c load = 1.0 nf ? 1 t dt 20 ? ? ns ?? 5.2.2 ? ? 1 ?12? ???? oc th-hi 430 480 530 mv ? 1 v cboot = 5v ???? oc th-lo 130 180 230 mv ? 1 ? 3 ? t ss-min ? 800 ? ns ? 1 ?? ? ? ?? t ss-ht 30 60 ? ms ? 1 ?? ?? tshd ? 150 ? c ? 1 ??? tshd_hys ? 15 ? c ? 1 ??Z ? v in = 6.0v 30v f sw = 300 khz ? ? ? ?? ?? t a -40 ? +125 c ? t j-max ??+150c ?? t a -40 ? +125 c ?? t a -65 ? +150 c ? k 10 3x3 dfn ja ?53.3?c/w ?? 4 ? Z v in = 12v f sw = 300 khz c in = 1.0 f t a = +25c ?? t a = -40c +125c ?? ? ? ? ? 1 ???? 2 ???? 3 ??
MCP19035 ds22326a_cn 6 ? ? 2012 microchip technology inc. ?
? 2012 microchip technology inc. ds22326a_cn 7 ? MCP19035 2.0 ? t a = +25c v in = 12v v out = 1.8v f sw = 300 khz c vcc = 4.7 uf ? 2-1 ??? ? 2-2 ??? ? 2-3 ??? ? 2-4 +v cc-out ??? ? 2-5 +v cc-out ??? ? 2-6 ldo ???? ? ????????? ???? ??? ??? 5.0 6.0 7.0 iescent current (ma) 4.0 0 5 10 15 20 25 30 35 input qu input voltage (v) 4.0 6.0 8.0 10.0 i escent current (ma) 0.0 2.0 -50 0 50 100 150 input qu i junction temperature (c) -4.0 -2.0 0.0 2.0 4.0 o scillator frequency v ariation (%) -10.0 -8.0 -6.0 -50 0 50 100 150 relative o v junction temperature (c) 4.99 5.01 5.03 5.05 o utput voltage (v) i load = 20 ma 4.95 4.97 0 10203040 ldo o input voltage (v) 4.99 5.01 5.03 5.05 output voltage (v) 4.95 4.97 0 204060 ldo load current (ma) 05 0.75 1 1.25 1.5 r opout voltage (v) i load = 50 ma 0 0.25 0 . 5 -50 0 50 100 150 ldo d r junction temperature (c)
MCP19035 ds22326a_cn 8 ? ? 2012 microchip technology inc. ? t a = +25c v in = 12v v out = 1.8v f sw = 300 khz c vcc = 4.7 uf ? 2-7 +v cc-out ldo psrr ? ? 2-8 ??? ? 2-9 uvlo ?? ? 2-10 ??? ? 2-11 ???? ? 2-12 ???? -50.0 -30.0 -10.0 l do psrr (db) -90.0 -70.0 10 1000 100000 l frequency (hz) 0 0.1 0.2 v e reference voltage variation (%) -0.2 -0.1 -50 0 50 100 150 relati v junction temperature (c) 3 4 5 volatge lockout h resholds (v) v in rising v in falling 2 3 -50 0 50 100 150 under t h junction temperature (c) 1.5 2.0 2.5 3.0 3.5 4.0 t start time (ms) v out = 1.8 v i out = 1 a 0.0 0.5 1.0 -50 0 50 100 150 sof t junction temperature (c) 400 500 600 side overcurrent h reshold (mv) v cboot = 5v 300 400 -50 0 50 100 150 high- t h junction temperature (c) -100 0 - side overcurrent hreshold (mv) -200 -50 0 50 100 150 low - t junction temperature (c)
? 2012 microchip technology inc. ds22326a_cn 9 ? MCP19035 ? t a = +25c v in = 12v v out = 1.8v f sw = 300 khz c vcc = 4.7 uf ? 2-13 hdrv p r dson ?? ? 2-14 hdrv n r dson ?? ? 2-15 ldrv p r dson ? ? ? 2-16 ldrv n r dson ?? ? 2-17 pg ??? ? 2-18 pg ??? 20 -10 0 10 20 30 40 50 d e driver pmos r dson t ive variation (%) -50 -40 -30 - 20 -50 0 50 100 150 high-si d rela t junction temperature (c) -10 0 10 20 30 40 50 e driver nmos r dson t ive variation (%) -50 -40 -30 -20 -50 0 50 100 150 high-sid e rela t junction temperature (c) -10 0 10 20 30 40 50 e driver pmos r dson t ive variation (%) -50 -40 -30 -20 -50 0 50 100 150 low-sid e relea t junction temperature (c) -10 0 10 20 30 40 50 e driver nmos r dson t ive variation (%) -50 -40 -30 -20 -50 0 50 100 150 low-sid e rela t junction temperature (c) 120 130 140 150 g ood active timeout (ms) 100 110 -50 0 50 100 150 power g junction temperature (c) 90 100 good thresholds r eference voltage) pwrgd = low pwrgd = high 80 -50 0 50 100 150 powe (% of r junction temperature (c)
MCP19035 ds22326a_cn 10 ? ? 2012 microchip technology inc. ?
? 2012 microchip technology inc. ds22326a_cn 11 ? MCP19035 3.0 ? 3-1 ? 3.1 ? shdn ??? MCP19035 ?? ? ????? ?? ??? ldrv hdrv ?? ? shdn ????? ldo ? ??????? ? 100 k ? v in 3.2 ? fb ?????? ???? 3.3 ?? comp ???? fb ?? 3.4 ? v in ??? gnd ? ???? ldo ????? +5v v cc 3.5 ? pwrgd ???? ? 92% ???????? ? +v cc ??? ? 100 k 3.6 ldo ? +v cc ?? ldo ? ?? +5.0v ??? ??????? ? 50 ma ? gnd ?? 4.7 f ??? 3.7 ?? ldrv ? n mosfet ? ldrv ? 1a ? 1.5a 3.8 ??? boot boot ? mosfet ? ????? phase ??? ???? mosfet 3-1 ? MCP19035 3x3 dfn ? 1 shdn ? 2fb ? 3comp ?? 4v in ? 5pwrgd ? 6+v cc +5.0v ? 7ldrv ?? 8boot ??? 9phase ?? 10 hdrv ?? 11 ep ?????
MCP19035 ds22326a_cn 12 ? ? 2012 microchip technology inc. 3.9 ?? phase ?????? ??? boot ?? mosfet ??????? ?? ?? 3.10 ?? hdrv ? n mosfet ??? hdrv ?? 1a 3.11 ??? ep ???????
? 2012 microchip technology inc. ds22326a_cn 13 ? MCP19035 4.0 ?? 4.1 MCP19035 ?????? ? / ?????? ??? ? ???? ? ? ?? n mosfet ?? ????? ? ?????????? ??? mosfet ? ??? ? ?? mosfet ?? MCP19035 ?????? ? ? ?????? ?????? ??????? ? ? shdn ???????? ? ???????? ??????? ??? ? 3mm3mm dfn ????? ?? ? 4-1 ?? hdrv ldrv 95< boot {
fee shdn v in pwrgd comp fb phase x ?ee? x hd ld 0 _< !ew< !o *< + - v cc + $d!7 + c? g? + c? + - sd ea sd uvlo + c? e?#?# + c? ?5+ _ *< ec
| + c? fb sd gnd v ref pwm e?#y?# + c? ot ot v in v cc v cc v cc v cc
MCP19035 ds22326a_cn 14 ? ? 2012 microchip technology inc. 4.2 pwm MCP19035 ????????? ? pwm ? ?????? 600 mv ? fb ?? ?????????? ?????? pwm ?? sr 1/ ?? pwm ???????? ?? ii ? iii ? ??? 4.3 ?? v ref MCP19035 ???????? ??????? ?? 600 mv 4.4 ? MCP19035 ?? 300 khz ? ?? 4.5 ?? uvlo ??? uvlo ??? ????? 4.2v ? 3.6v 1??? ??????? 4.6 ? ? shdn ???? shdn ???? MCP19035 ??? ????????? ldo ????? shdn ? v in ??? 100 k ?? shdn ??? ?????? ?? gnd shdn ? ???? ?? 4.7 ? pwrgd ???????? 92% ?????? ???? ? fb ?? 600 mv ? ? 8% ? ????? ? ??? ? ????? ? ?????? +150c ???????? 120 ms ?? ? t pg-timeout ????????? ??? 150 s ? t pg-delay ? 4-2 ?? pg th-low t pg-timeout pg v fb t pg-delay pg th-hi pg v-low
? 2012 microchip technology inc. ds22326a_cn 15 ? MCP19035 4.8 ?? ldo MCP19035 ??? 5v ?? ????????? ? ldo v cc ?? gnd ?? ??? ?? 4.7 f ????? ldo ?? MCP19035 ? + ?? ? 50 ma MCP19035 ???? 5ma ? ? 4-1 ???? ? 4-1 ldo ? MCP19035 ??? ??? ???? +125c ldo ????? microchip an761 an792 ???? ldo ??? ldo ??? mos ?? ? 3.3v ??????? ? mosfet 4.9 ? mosfet ? mosfet ?? ?? +5v mosfet ? ldrv gnd ? ? 1a ? 1.5a ? hdrv ?? ? 1a ????? ?????? ????? MCP19035 ? ??? ???? 4.10 ?? mosfet ?? mosfet ????? ???? mosfet ? ??????? mosfet ???? 1 ?? ?????? ? 1 ???? 7 ? ? MCP19035 ???? mosfet 60 ms ?? MCP19035 ???? mosfet ? ?????????? mosfet ?? 60 ms ?? ?? mosfet ???? ???? 1 MCP19035 ????? 7 ?? ?????? ??????? ? mosfet ?????? ?? i ? = 50 ma - f sw x(q g( ? ) + q g( ? ) ) - 5 ma i ? = ???? f sw = ? 300 khz q g( ? ) = ? mosfet 4.5v v gs ? q g( ? ) = ? mosfet 4.5v v gs ?
MCP19035 ds22326a_cn 16 ? ? 2012 microchip technology inc. ??? mosfet ?? ????????? 1 ???? ????? 1 ? ?? 7 ?? MCP19035 ???? mosfet 60 ms ?? MCP19035 ???? mosfet ??? ???????? mosfet ?? 60 ms ?? ?? mosfet ???? ???? 1 MCP19035 ????? 7 ?? ?????????? 480 mv ???????? ?????????? ???????? mosfet ????? ??????? ? 4-2 ???? mosfet ????????? ??????? ??????? 4 ? mosfet ? 4-2 ? mosfet ?? ?????????? 180 mv ??????? 100 mv 300 mv ? ? 4-3 ??? ? mosfet ?????? ???????? ??????? ?? 2 ? mosfet ? 4-3 ???????? ??????? ????? 85% ?? ????? i hs mos v oc hs r dson ----------------- = i hs mos = ?? mosfet ? v oc hs = ???? 480 mv r dson = ? mosfet ?? i ls mos v oc ls r dson ---------------- - = i ls mos = ?? mosfet ? v oc ls = ???? 180 mv r dson = ? mosfet ??
? 2012 microchip technology inc. ds22326a_cn 17 ? MCP19035 4.11 ???? MCP19035 ????? ??? 2.6 ms ?? MCP19035 ????? ? shdn ???? ? ? 4-3 ? 4.12 ??? ?????? ? fb ??? ??? ?? ?? fb ????? ??? mosfet ? ??????? ? shdn v out ec
|k ? t ss = 2.6 ms ?
MCP19035 ds22326a_cn 18 ? ? 2012 microchip technology inc. ?
? 2012 microchip technology inc. ds22326a_cn 19 ? MCP19035 5.0 ?? 5.1 ? MCP19035 ?? 30v ? 1?? mosfet ? ????? 20a ?e? dsp fpga asic pol ?????? 30v ? 5.2 ? ?????? ?? excel ? ?? ??? ?? MCP19035 ???? ?? an1452 using the MCP19035 synchronous buck converter design tool 5.2.1 ??? MCP19035 ? 300 khz ???? ???????????? ? ? mosfet ?? ?? 170 ns ???? 15:1 5.2.2 ? ??????? ? mosfet ?? fom ?? ?y????? 2% ???????? ? 12 ns ?????? fom ??t? 12 ns MCP19035 ??????? MCP19035 5.2.3 ? ????? ? i out ???? ????????? ??????????? ??????????? ??????? mosfet ?? ?? 30% ? ? ? 5-1 ? ? 5-1 ? ??? ? 5-2 ? ? 5-2 ? ? 5-3 rms ??? ? ??????? ??? ?? 20% ? ??????? ???? ??Z ? ??]? ???? ???????? ? ????? ??????? ?? MCP19035 lv in max v out ? ?? ?? v out v in max ----------------------- 1 f sw --------- - 1 0.3 i out max ----------------------------------------- - = i l peak i out max 0.3 i out max 2 ----------------------------------------- - + = i l rms i 2 out i ripple 2 3 ------------------- - + =
MCP19035 ds22326a_cn 20 ? ? 2012 microchip technology inc. 5.2.4 ? ???????? ????????? ???? esr ?????????? x7r ?????? ?? x5r ? esr ????? ???????????? ? ?? ? 5-4 ? ? 5-4 ? ???? 50% ?? ???? rms ? ? 5-5 ? ? 5-5 rms ?????? rms ?? 5.2.5 ? ???????? ?????? ??? esr ?? ??????? ??? esr ???? ??????? x7r ? ??????? x5r ? ??? ? 5-6 ? ? 5-6 ?? ????????? ???? ??????? ? 5-7 ? ?? ? 5-7 ? ??????? ???? ?????? ? c in _ min i out d1d ? () f sw v ripple di out esr ? () -------------------------------------------------------------------------------------------- = c in_min = ? ?? i out = a d= ?? ?? 0.5 f sw = ? hz v ripple = ?? ? 0.1v 0.5v ?? esr = ?? ??? i rms c in () i out i ripple 12 --------------- - + ?? ?? d v out i out v in -------------------------------- ?? ?? ? = v ripple i ripple esr 1 8c out f sw ------------------------------------- - + ?? ?? = i ripple = ? a v ripple = ?? v c out = f esr = ?? c out li oh 2 i ol 2 ? v f 2 v out 2 ? ----------------------------------- - = i oh = ? i ol = ??? v out = ?? v f = ?
? 2012 microchip technology inc. ds22326a_cn 21 ? MCP19035 5.2.6 mosfet ? ??? mosfet ????? ?????????? MCP19035 ??????? mosfet ?? 5v ? mosfet ????? mosfet ?? mosfet ?????? mos ???? ? mosfet ?? q g r ds(on) ?? ? 5-8 ? 5-8 ? fom ?? mos ??? ? mosfet ????? ??????????? mosfet ???? r ds(on) ? ?? rms ? ? 5-9 ? 5-9 ?? rms ? ? mos ????? ? 5-10 ? ? 5-10 ? mosfet ?? ????? ? 5-11 ???? ? 5-11 ? mosfet ? t s(hl) t s(lh) ??1?? ? 5-12 ? mosfet ??? ? 5-13 ? ? 5-13 ? mosfet ? ????? 30% ?? ???????? ?????? mosfet ? 50% ????? ??? ??????? r ds(on) mosfet fom q gtot () r ds on () = i rms high-side di out 2 i ripple 2 12 --------------- - + ?? ?? ?? = d= ?? i out = a i ripple = ? ?? 30% a p cond high-side i rms high-side 2 r ds on () hs max () = p sw high-side v in i out 2 -------------------------- - ?? ?? t shl () t slh () + () f sw = v in = ? v i out = a f sw = ? hz t s(hl) = mosfet ? ?????? s t s(lh) = mosfet ? ?????? s t shl () q g total () i drv sink --------------------- - = t slh () q gtotal () i drv source ------------- -------- - = q g(total) = ? mosfet ? i drvsink = ??? ?? 1a i drvsource = ??? ?? 1a p loss high-side p cond high-side p sw high-side + =
MCP19035 ds22326a_cn 22 ? ? 2012 microchip technology inc. ? mosfet ?? ???????? ?????? ??? ?? ?? mosfet rms ? ? 5-14 ? ? 5-14 ? mosfet rms ? mos ????? ? 5-15 ? ? 5-15 ????? ???? ? 5-16 ? ? 5-16 ?? ????? ? 5-17 ? ? 5-17 ?? ? mosfet ??? ? 5-18 ?? ? 5-18 ? mosfet sr ? ??????? r ds(on) mosfet ?????? ?????????? ? fom mosfet ?? 5.2.7 ??? ??????? mosfet ????? mosfet ??? ?? ? 5-19 ? 5-19 ?? ?? 50 mv ?? esr ??? ??? 16 v dc i rms low-side 1d ? () i out 2 i ripple 2 12 --------------- - + ?? ?? ?? = d= ?? i out = a i ripple = ? ?? 30% a p cond low-side i rms low-side 2 r ds on () ls max () = p loss bd i out v f t bd f sw = v f = ?? v t bd = ???? s p rr q rr v in f sw 2 ---------------------------------------- = q rr = ??? c p loss low-side p cond low-side p loss bd p rr ++ = c boot q gtotal () v droop ------------ ----------- - = q g(total) = ? mosfet ? c v droop = ?? v
? 2012 microchip technology inc. ds22326a_cn 23 ? MCP19035 5.2.8 MCP19035 ????? pwm ?? ? iii ?????? ??????? ? 5-1 ?????? ? ?y?? ????????????? ?? lc ??? -40 db/ ?? ???? -180 ???? ??????? ?? esr ?? ?? -180 ??????? ?? ??????? esr ?? esr ????? ??????? ??? ? 5-20 ? ? 5-20 ? ? 5-21 pwm ? 5-2 iii ??? ? 5-2 iii ? ? db ? ne)[ ?dz? a mod 0 db -40 db / ne -20 db/ ne f lc f esr ,! ?z? 0 -90 -180 ne)[ ?dz? f lc 1 2 lc out ------------------------------------- = f esr 1 2 esr c out ---------------------------------------------- - = a mod 20 v in v ramp -------------------- - log 20 v in log == gs () r 1 r 3 + r 1 r 3 c 1 --------------------------------- s 1 r 4 c 2 ------------------- - + ?? ?? ?? s 1 r 1 r 3 () c 1 ------------------------------------- - + ?? ?? ?? ss c 2 c 3 + () r 4 c 2 c 3 --------------------------------- + ?? ?? ?? s 1 r 3 c 1 ------------------- - + ?? ?? ?? --------------------------------------------------------------------------------------------------- = c 1 r 3 c 3 r 1 r 2 c 2 v ref r 4 + - ea v in comp
MCP19035 ds22326a_cn 24 ? ? 2012 microchip technology inc. ? 5-3 iii ??? ? y?? ? c 3 ?c 2 r 3 ?r 1 ??? ? 5-22 ? ? 5-22 ?? ? 5-23 ? 5-24 iii ?? ? ????????? 45 ?????????? ???????? ???? ? 1. ? ? 5-20 ?? lc ? esr ?? 2. ? r 1 ? 10 k 100 k ?? ?????? ??? 3. r 2 ? ? 5-25 ? ? 5-25 ? 4. ???????????? ? f sw 1/10 1/5 ??????? ????????? ????????? 1/10 ???????? ???? esr ?? lc ?? ?? ? 5-26 ? ???????? ? 5-26 ?????? ????? f co a ptco ?y??? f z2 f p1 ? ? 5-3 ? db ? ne)[ ?dz? a ol 0 db f z1 f z2 ,! ?z? 0 90 -90 ne)[ ?dz? f p1 f p2 a pole a zero f z1 1 2 r 1 r 3 + () c 1 ------------------------------------------------- - 1 2 r 1 c 1 ------------------------------- - ? = f z2 1 2 r 4 c 2 ------------------------------- - = f p1 1 2 r 4 c 2 c 3 c 2 c 3 + ------------------- - ?? ?? -------------------------------------------------- - 1 2 r 4 c 3 ------------------------------- - ? = f p2 1 2 r 3 c 1 ------------------------------- - = a zero 20 r 4 r 1 ----- - log = a pole 20 r 4 r 1 r 3 + () r 1 r 3 ------------------------------------ log = r 2 v ref r 1 v out v ref ? -------------------------------- - 0.6 r 1 v out 0.6 ? -------------------------- - == a pt co a mod 40 ? f co f lc -------- ?? ?? log =
? 2012 microchip technology inc. ds22326a_cn 25 ? MCP19035 5. ?? f lc ?? c 1 ? ? 5-27 ? ? 5-27 c 1 6. r 4 ?? ? 5-28 ? ? 5-28 r 4 7. ?? f lc ?? c 2 ?? ? 5-29 ? ? 5-29 c 2 8. ?? f sw c 3 ?? ? 5-30 ? ? 5-30 c 3 9. ?? f sw ?? r 3 ?? ? 5-31 ? ? 5-31 r 3 ??????? ??????? ?????? ?????? ?? microchip technology inc. ?? ?? c 1 lc out r 1 --------------------------- - = r 4 f co f lc -------- 1 v in -------- r 1 = f co = ????? ?? f sw 1/10 c 2 2 lc out r 4 --------------------------- - = c 3 1 2 r 4 f sw ----------------------------------------- - = r 3 1 c 1 f sw -------------------------------- - =
MCP19035 ds22326a_cn 26 ? ? 2012 microchip technology inc. 5.3 ?1 ??? 5.5v ? ? 5-4 ??? ? 5-4 v in ?? ????????? ?? mosfet ???????? / ?? MCP19035 ?? v cc ?? / ?? r in c vcc ??? v cc ?????? ?? 2.2 10 ?? c in c out l q 1 q 2 MCP19035 hdrv ldrv phase boot +v cc c boot c vcc +v out shdn v in pwrgd comp fb r 1 r 3 c 1 r 2 c 3 r4 c 2 +v in on off r in gnd
? 2012 microchip technology inc. ds22326a_cn 27 ? MCP19035 6.0 ? ??? MCP19035 ? 1.8v 12v ?????????? ? microchip ?????? ?? an1452 using the MCP19035 synchronous buck converter design tool ds01452 6-1 ?? 6.0.1 ? ????? 30% ? ? 5-1 ??? 1.16 h ?? ????????? 1.5 h ? ?? 20% ??? ? 5-2 ??? 17.25a ????? ?????????? 6-2 ?????? 6-1 ?Z ? ? ? ? v in 81214v ? v out 0 i out 15a ? 1.8 ? v ? 8.0v v in 14v ? ? 0.5 % ? 0a i out 15a ? ? 0.5 % ? v out_ripple i out =15a ? ? 30 mv ? v in_ripple i out =15a ? ? 0.3 v 3.75a ? 11.25a ? ? 100 mv 3 11.25a ? 3.75a ? ? 100 mv i out 0?15a v in = 12v i out = 10a 90 ? ? % 6-2 ?????? ? h dcr m i sat a coilcraft ? xal1010-152meb 1.5 1.76 36.6 wurth elektronik ? 7443320150 1.5 2.1 27 tdk - epc ? b82559a0142a013 1.4 1.5 22 bourns ? srp1270-1r5m 1.5 2.1 48
MCP19035 ds22326a_cn 28 ? ? 2012 microchip technology inc. 6.0.2 ? ??? 22.5% ? esr ? 10 m ??? x7r ?? ? ? 5-4 ? 32.7 f ? ??? 25v dc ?? 22 f ? x7r 6.0.3 ? ? 25% 75% ???? ? 5-7 ????? 456 f ??????? 500 f ? esr ??? ? 5 ??? 6.3v dc 100 f ???? x7r x5r ? ? esr ?? 5m ?? ? ? 5-6 ? 6.0.4 mosfet ? ? mosfet ????? ??? ? 6-1 ?? ? 6-1 ? ??? ? 6-2 ? ? 6-2 ? ??? 90% 10a ? ? 2w 6-3 ??? ?????? ??? ????? mosfet ??????? ??? ????? 75% ? mosfet ?? ? mosfet ??? ? 0.72w ???? 7:1 ? mosfet ????? ??? 70% ? mosfet ???? ? 5-10 ? ?? mosfet ???? ? mosfet r ds(on) ? ? 6-3 ? r ds(on) ?? 12v ? 10a i rms high-side =3.9a ? mosfet r ds(on) ? 14 m ? mosfet ???? 70% ? mosfet ?? ? 6-4 ? mosfet ? 4.5v v gs ?? q g(total) ? 12 nc 10a ? p in u out i outmax eff ----------------------------------------- - = p loss p in p out ? = 6-3 ?? ? % ? mosfet 36 ? mosfet 40 10 2 1 pwm 10 ? 1 r ds on () p loss high side ? i rms high side ? 2 ----------------------------------------- 0.3 = q g total () p loss high side ? v in max () i out f sw ------------------------------------------------------ - 0.7 =
? 2012 microchip technology inc. ds22326a_cn 29 ? MCP19035 ? mosfet ?????? ?? 85% ???? 12v ? 10a 1? ? 0.9w ? ? 6-5 ? mosfet r ds(on) ? 6-5 ? mosfet rd (on) ? 12v ? 10a i rms low-side =9.3a ? mosfet r ds(on) =7.8m ??? microchip mcp87050 mcp87022 mosfet ???? ?? mosfet mcp87050 ? 0.66w ? mosfet mcp87022 0.3w 6.0.5 ??? ? 5-19 ????? 276 nf ? ?? 16 v dc ??? 330 nf ?? x7r 6.0.6 dt ? ??? mosfet ?? ???? MCP19035 ? 6.0.7 ? MCP19035 ???? ?????? 480 mv ????? 180 mv ? ????? ? 6-6 ? mosfet ? ??? mosfet ?? 87a ? mosfet ??? ? 6-7 ? mosfet ? ??? mosfet ?? 81a 6.0.8 ????? 30 khz lc ? ? 5.88 khz ? 5.2 ??? ?????? ??? ??? c0g ?? 5% ?k ?? 1% 6.0.9 ? ???J??? ?????? pcb ?? ? ? MCP19035 dfn ????? ????? ? ?? 4 ??? ? ?????????? ???? ?? ? ??? 4 pcb ? /emi ? ???? ? ???? ???? r ds on () p loss low side ? i rms low side ? 2 --------------------------------------- - 0.85 = i max hs 0.48 r ds on () hs ------------------------- = 6-4 ? ? ? ?? r 1 20 k 20 k r 2 10 k 10 k r 3 0.774 k 0.75 k r 4 8.6 k 8.2 k c 1 1.37 nf 1.2 nf c 2 6.36 nf 6.8 nf c 3 61 pf 68 pf i max ls 0.18 r ds on () ls ------------------------ =
MCP19035 ds22326a_cn 30 ? ? 2012 microchip technology inc. ? mosfet ?? ldrv hdrv ?????? ? ? mosfet / ? mosfet ? ? ?? mosfet MCP19035 phase ????y??? ???? ? ? MCP19035 ? ?? ??? ? ? v in ?? MCP19035 ? ? ???? MCP19035 ? ? ??? ? 6-1 ? pcb ?????? ?? ? 6-1 ? ???? emi ? ?? sr mosfet ?? emi ????? 10 ns ????????? esr ????? mosfet ????? ???^ ? rf ?? ?? ??? sr mosfet ? phase ???^? ???????? mosfet sw ??????? ? 2.2 10 ??????? ????? 0.5% c in c out l1 q 1 q 2 r l MCP19035 hdrv ldrv phase i in i sr i hdrv i ldrv i rr gnd i in = ? i sr = ?? sr mosfet ? i hdrv i ldrv = mosfet ? i rr = sr mosfet ????
? 2012 microchip technology inc. ds22326a_cn 31 ? MCP19035 6-2 6-3 ?????? phase ????? ? 6-2 ????? sw phase ? ? 6-3 ????? sw phase ?
MCP19035 ds22326a_cn 32 ? ? 2012 microchip technology inc. 6.0.10 ?? ? 6-4 ?? MCP19035 pgnd pgnd pgnd sgnd sgnd pgnd pgnd 10k r2 20k r1 4.7 uf c13 uf j1 1 2 j2 1.2 nf c1 750 r3 8.2k r4 68 pf c3 vin vout 100 uf c5 c6 100k r6 0.33 uf c4 gnd vin ldvr 11 l1 100 uf 100 uf 100 uf 100 uf
? 2012 microchip technology inc. ds22326a_cn 33 ? MCP19035 6-5 ? ? ? 1c1 1.2nf kemet ? electronic corp. c0603c122j1gactu cap. ceramic 1200 pf 100v 5% np0 0603 1c2 6.8nfkemet electronic corp. c0603c682j5gactu cap. ceramic 6800 pf 50v 5% np0 0603 1c3 68pfkemet electronic corp. c0603c680j1gactu cap. ceramic 68 pf 100v 5% np0 0603 1c4 0.33fmurata electronics ? grm188r71c334ka01d cap. ceramic 0.33 f 16v 10% x7r 0603 5 c5, c6, c7, c8, c9 100 f tdk ? corporation c3225x5r0j107m cap. ceramic 100 f 6.3v 20% x5r 1210 2c10, c1122fmurata electronics grm32er71e226ke15l cap. ceramic 22 f 25v 10% x7r 1210 1 c12 1 f tdk corporation cga4j3x7r1v105k cap. ceramic 1 f 35v 10% x7r 0805 1 c13 4.7 f tdk corporation c2012x5r1e475k cap. ceramic 4.7 f 25v x5r 0805 2 j1, j2 on-shore technology inc. ed120/2ds terminal block 5.08 mm vert. 2 pos 1l1 1.5hwurth electronik group 7443320150 inductor power 1.5 h 19.5a smd 1 q1 microchip technology inc. mcp87050t-u/mf n mosfet 5x6 mm pdfn 1 q2 microchip technology inc. mcp87022t-u/mf n mosfet 5x6 mm pdfn 1 r1 20 k panasonic ? - ecg erj-3ekf2002v res. 20k ohm 1/10w 1% 0603 smd 1 r2 10 k panasonic - ecg erj-3geyj103v res. 10k ohm 1/10w 5% 0603 smd 1 r3 750 vishay ? /dale intertechnology crcw0603750rfkea res. 750 ohm 1/10w 1% 0603 smd 1r4 8.2k panasonic - ecg erj-3ekf8201v res. 8.2k ohm 1/10w 1% 0603 smd 1r5 1m panasonic - ecg erj-3ekf1004v res. 1m ohm 1/10w 1% 0603 smd 1 r6 100 k panasonic - ecg erj-3ekf1003v res. 100k ohm 1/10w 1% 0603 smd 1 u1 microchip technology inc. MCP19035-aaabe/mf ??
MCP19035 ds22326a_cn 34 ? ? 2012 microchip technology inc. ?
? 2012 microchip technology inc. ds22326a_cn 35 ? MCP19035 7.0 ?? 7.1 ??? ?? xx...x ??? y ? ?? yy ? ? ww ? ????? 01 nnn ??? matte tin sn jedec ?? * ??? jedec ?? ???? ?? ? microchip ?????? ????? 3 e 3 e MCP19035-aaaae/mf bafg MCP19035t-aaaae/mf bafg MCP19035-aaabe/mf bafp MCP19035t-aaabe/mf bafp bafg 1209 256 10 dfn 3x3x0.9 mm ? 1 1
MCP19035 ds22326a_cn 36 ? ? 2012 microchip technology inc. note: for the most current package drawings, please see the microchip packaging specification located at http://www.microchip.com/packaging 10 ????? mf 3x3x0.9 mm [dfn] ? ?? http://www.microchip.com/packaging ? microchip ?Z
? 2012 microchip technology inc. ds22326a_cn 37 ? MCP19035 note: for the most current package drawings, please see the microchip packaging specification located at http://www.microchip.com/packaging 10 ????? mf 3x3x0.9 mm [dfn] ? ?? http://www.microchip.com/packaging ? microchip ?Z
MCP19035 ds22326a_cn 38 ? ? 2012 microchip technology inc. note: for the most current package drawings, please see the microchip packaging specification located at http://www.microchip.com/packaging 10 ????? mf 3x3x0.9 mm [dfn] ? ?? http://www.microchip.com/packaging ? microchip ?Z
? 2012 microchip technology inc. ds22326a_cn 39 ? MCP19035 ? a ? a 2012 11 ? ???
MCP19035 ds22326a_cn 40 ? ? 2012 microchip technology inc. ?
? 2012 microchip technology inc. ds22326a_cn 41 ? MCP19035 ??? ????????? x /xx -x ? ? ?? MCP19035 ?? MCP19035t ?? ? ?? a = 300 khz ? a = 600 mv ldrv oc ? a = 200 mv a = 20 ns b = 12 ns ?? e= -40 c +125 c ? ? mf = ????? 3x3x0.9 mm 10 ? a) MCP19035-aaaae/mf 300 khz ?? 600 mv v ref 200 mv ldrv oc ? 20 ns ??? 10 3x3 dfn ? b) MCP19035t-aaaae/mf ? 300 khz ?? 600 mv v ref 200 mv ldrv oc ? 20 ns ??? 10 3x3 dfn ? c) MCP19035t-aaabe/mf ? 300 khz ?? 600 mv v ref 200 mv ldrv oc ? 12 ns ??? 10 3x3 dfn ? d) MCP19035t-aaabe/mf ? 300 khz ?? 600 mv v ref 200 mv ldrv oc ? 12 ns ??? 10 3x3 dfn ? x ? x ldrv oc ? x
MCP19035 ds22326a_cn 42 ? ? 2012 microchip technology inc. ?
? 2012 microchip technology inc. ds22326a_cn 43 ? ??????? ????? microchip ??? ? microchip technology inc. ?? ????? ???? microchip technology inc. ??? ????? ???????Z ? microchip ?? ????? ????? ??? microchip ??? ??? microchip ?? / ?????? ???????? microchip ??? microchip ?? ?e??? ? microchip ???? microchip ?? dspic flashflex k ee l oq k ee l oq ?? mplab pic picmicro picstart pic 32 ?? rfpic sst sst ? superflash uni/o ? microchip technology inc . ???? filterlab hampshire hi-tech c linear active thermistor mtp seeval the embedded control solutions company ? microchip technology inc . ??? silicon storage technology ? microchip technology inc . ????? analog-for-the-digital age application maestro bodycom chipkit chipkit ?? codeguard dspicdem dspicdem.net dspicworks dsspeak ecan economonitor fansense hi-tide in-circuit serial programming icsp mindi miwi mpasm mpf mplab certified ?? mplib mplink mtouch omniscient code generation picc picc-18 picdem picdem.net pickit pictail real ice rflab select mode sqi serial quad i/o to t a l endurance tsharc uniwindriver wiperlock zena z-scale ? microchip technology inc . ??? sqtp microchip technology inc . ?? gestic ulpp ? microchip technology inc. ?? microchip technology germany ii gmbh & co. & kg ? ????? ????? ? 2012, microchip technology inc . ? isbn 978-1-62076-716-0 ? microchip ???? ?microchip ??? microchip ???? ?microchip ???? microchip ??????????? ? ????????????? microchip ? Z? microchip ??????? ?microchip ?????? ?microchip ?j?????????? ?? ???? microchip ????????? microchip ??? ? ?? digital millennium copyright act ??? ?????????? microchip ? chandler tempe ?? gresham ?????? ???? iso/ts-16949:2009 ? microchip pic ? mcu dspic ? dsc k ee l oq ? eeprom ? ????????? ? microchip ??????? iso 9001:2000 ? quality management system certified by dnv == iso/ts 16949 ==
ds22326a_cn 44 ? ? 2012 microchip technology inc. ?? corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 1-480-792-7200 fax: 1-480-792-7277 ?? http://www.microchip.com/ support ? www.microchip.com atlanta duluth, ga tel: 1-678-957-9614 fax:1-678-957-1455 ? boston westborough, ma tel: 1-774-760-0087 fax: 1-774-760-0088 ?? chicago itasca, il tel: 1-630-285-0071 fax: 1-630-285-0075 cleveland independence, oh tel: 1-216-447-0464 fax: 1-216-447-0643 ? dallas addison, tx tel: 1-972-818-7423 fax: 1-972-818-2924 detroit farmington hills, mi tel: 1-248-538-2250 fax: 1-248-538-2260 ???? indianapolis noblesville, in tel: 1-317-773-8323 fax: 1-317-773-5453 ? los angeles mission viejo, ca tel: 1-949-462-9523 fax: 1-949-462-9608 ? santa clara santa clara, ca tel: 1-408-961-6444 fax: 1-408-961-6445 ?? toronto mississauga, ontario, canada tel: 1-905-673-0699 fax: 1-905-673-6509 ? ?? asia pacific office suites 3707-14, 37th floor tower 6, the gateway harbour city, kowloon hong kong tel: 852-2401-1200 fax: 852-2401-3431 - tel: 86-10-8569-7000 fax: 86-10-8528-2104 - ? tel: 86-28-8665-5511 fax: 86-28-8665-7889 - tel: 86-23-8980-9588 fax: 86-23-8980-9500 - tel: 86-571-2819-3187 fax: 86-571-2819-3189 - ? tel: 852-2943-5100 fax: 852-2401-3431 - ? tel: 86-25-8473-2460 fax: 86-25-8473-2470 - ? tel: 86-532-8502-7355 fax: 86-532-8502-7205 - ? tel: 86-21-5407-5533 fax: 86-21-5407-5066 - tel: 86-24-2334-2829 fax: 86-24-2334-2393 - tel: 86-755-8864-2200 fax: 86-755-8203-1760 - tel: 86-27-5980-5300 fax: 86-27-5980-5118 - tel: 86-29-8833-7252 fax: 86-29-8833-7256 - tel: 86-592-238-8138 fax: 86-592-238-8130 - tel: 86-756-321-0040 fax: 86-756-321-0049 ? ? - tel: 886-7-213-7828 fax: 886-7-330-9305 ? - ? tel: 886-2-2508-8600 fax: 886-2-2508-0102 ? - tel: 886-3-5778-366 fax: 886-3-5770-955 ? australia - sydney tel: 61-2-9868-6733 fax: 61-2-9868-6755 ? india - bangalore tel: 91-80-3090-4444 fax: 91-80-3090-4123 ? india - new delhi tel: 91-11-4160-8631 fax: 91-11-4160-8632 ? india - pune tel: 91-20-2566-1512 fax: 91-20-2566-1513 ? japan - osaka tel: 81-6-6152-7160 fax: 81-6-6152-9310 ? japan - tokyo tel: 81-3-6880-3770 fax: 81-3-6880-3771 korea - daegu tel: 82-53-744-4301 fax: 82-53-744-4302 korea - seoul tel: 82-2-554-7200 fax: 82-2-558-5932 82-2-558-5934 malaysia - kuala lumpur tel: 60-3-6201-9857 fax: 60-3-6201-9859 malaysia - penang tel: 60-4-227-8870 fax: 60-4-227-4068 ? philippines - manila tel: 63-2-634-9065 fax: 63-2-634-9069 ? singapore tel: 65-6334-8870 fax: 65-6334-8850 ? thailand - bangkok tel: 66-2-694-1351 fax: 66-2-694-1350 ? austria - wels tel: 43-7242-2244-39 fax: 43-7242-2244-393 denmark-copenhagen tel: 45-4450-2828 fax: 45-4485-2829 france - paris tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 1 germany - munich tel: 49-89-627-144-0 fax: 49-89-627-144-44 italy - milan tel: 39-0331-742611 fax: 39-0331-466781 netherlands - drunen tel: 31-416-690399 fax: 31-416-690340 spain - madrid tel: 34-91-708-08-90 fax: 34-91-708-08-91 ? uk - wokingham tel: 44-118-921-5869 fax: 44-118-921-5820 ?? 11/29/12

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