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electronic giant EG1186 ??? ?????? 201 7 ? ???? ? rev 1.0
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 1 / 1 ? v1.0 2017 0 4 05 EG1186 ?
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 1 / 1 ? ? 1. ................................ ................................ ................................ ................................ ................................ ..... 1 2. ................................ ................................ ................................ ................................ ................................ ..... 1 3. ? ................................ ................................ ................................ ................................ ............................. 1 4. ................................ ................................ ................................ ................................ ................................ ..... 2 4.1 ? ................................ ................................ ................................ ................................ ................... 2 4.2 ................................ ................................ ................................ ................................ ................... 3 5. ?? ................................ ................................ ................................ ................................ ............................. 4 6. ?? ................................ ................................ ................................ ................................ ..................... 5 7. ................................ ................................ ................................ ................................ ............................. 6 7.1 ? ................................ ................................ ................................ ................................ ................... 6 7.2 ? ................................ ................................ ................................ ................................ ................... 7 8. ? ................................ ................................ ................................ ................................ ............................. 8 8.1 vcc ................................ ................................ ................................ ................................ ............ 8 8.2 vdd ? ................................ ................................ ................................ ................................ ........... 8 8.3 ................................ ................................ ................................ ................................ ................... 8 8.4 cr ???? ................................ ................................ ................................ .............. 8 8.5 ? ................................ ................................ ................................ ................................ ........... 8 8.6 ................................ ................................ ................................ ................................ ........... 9 8.7 ................................ ................................ ................................ ................................ ................... 9 8.8 ? mos ................................ ................................ ................................ ............................. 9 8.9 ................................ ................................ ................................ ................................ ................... 9 8.10 ?? adj ................................ ................................ ................................ ................. 9 9. ?? ................................ ................................ ................................ ................................ ........................... 10 9.1 sop16 ?? ................................ ................................ ................................ ................................ ...... 10
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 1 / 10 EG1186 ?? 1. ? ???? ? ???? 10khz - 100khz ? uvlo ??? ? vcc ???? 6.5v ? vcc ?????? 3.5v ? uvlo ??? 3v ? ? ? ?? sop16 2. eg118 6 ??? dc - dc ? ?? ???? ???? ? ?? mos ? 600v ??? 3. ? ? T?? ? T? ? ?? / ?? ? ??? ? ???? ? ? p o e ? ?? ? ??
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 2 / 10 4. 4.1 ? ? 4 - 1. EG1186 ?? adj vdd ct eg 1186 1 2 3 4 5 6 7 8 out gnd hin 16 15 14 13 12 11 10 9 sd lin gnd vcc vs ho vb vdd fb lo
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 3 / 10 4.2 i/o 1 adj i ???????? 1.35v, ? ??? vout = 1+r1/r2 *1.35v r1 ? ??k r2 ? gnd ? 2 fb i ?? 5v ??? 3 out o pwm ??b? 4 hin i ???????? mos ???? 5 sd i ???? ho lo 6 lin i ???????? mos ??? ? 7 gnd gnd ???? 8 lo o ?? mos ????? 9 vcc power ??? 2.8v - 20v 10 vs o ??? 11 ho o ?? mos ????? 12 vb o ?? 13 vdd power pwm ???? 3.5v - 20v 14 14 vdd power pwm ???? 3.5v - 20v 15 ct i ???? 10khz - 100khz ? f=(37.5 x10 6 )/ct ( ? pf) 16 gnd gnd ????
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 4 / 10 5. ?? ? 5 - 1. EG1186 ?? o u t v d d o s c c t g n d v d d f b u v l o a d j v r e f = 1 . 3 5 v g n d 1 4 1 3 7 1 6 2 1 5 3 5 2 0 0 k ? ? 2 0 0 k + 5 v h i n 4 s d 5 l i n 4 l o 8 v c c 9 v s 1 0 h o 1 1 v b 1 2
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 5 / 10 6. ?? ? 6 - 1. EG1186 12v ???? ? 6 - 2. EG1186 5v ????
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 6 / 10 ? 6 - 3. EG1186 5v ???? 7. 7.1 ? ? t a = 25 ??? ? vb - - 0.3 600 v ?? vs - vb - 20 vb+0.3 v ? v adj fb out hin sd ? ? - 0.3 20 v ta ? - 45 12 5 tstr ? - 65 150 tl ? - 300 ????????????????
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 7 / 10 7.2 ? ? t a = 25 vcc=12v v b ?? vb ? 3 - 600 v v dd vcc ?? vdd vcc ? 3.5 - 20 v fosc ? vin=48v, ct=470pf 60 75 90 khz vadj ?? vin=30v 1.1 1.2 1.3 v d(max) ?? - 75 % uvlo on uvlo ? - 6 6.5 7 v uvlo off uvlo ??? - 3 3.5 4 v uvlo hyst uvlo ?? - 3 v lo ho io+ vo=0v,vin=vih pw 10us 0.8 1 - a lo ho io - vo=12v,vin=vil pw 10us 1.2 1.5 - a
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 8 / 10 8. ? 8.1 vcc vcc ???????? vcc ??? ??? 1uf ?????? vcc ? 8.2 vdd ? EG1186 vdd ?? 13 14 ???? 10uf ??? vdd ? ?? vdd ?????????? vdd ??? uvlo ??????????????? ??????????? 8.3 ??? r2 vdd ? 13 14 ????? EG1186 ??? ??? <100ua ?? uvlo ? pwm ?Y? ????? vdd ???? 6.5v ??? pwm ??????? fb ? 2 ??? ?? vdd ? 13 14 ?? vdd ?? 8.4 ???? EG1186 ??? pwm ???? c t ??? 8.4a ???? 2.5v, ????? 0.5v, ???? 100ua ?? c t ? ???? 300ua ?? c t ? ?????????? f=(37.5 x10 6 )/ c t ? ( ???? pf) c t = 470pf ??? pwm ??? 79.8khz ? 8.4a c t ??? 8.5 ? EG1186 ???? pnp q1 5401 v eb ? r1 ???? i pk = v eb /r 1 ? i pk ?? q1 ?? eg4328 5 ?? 3v ?? pwm ? c7 ? EG1186 5 ? 7 ? 1 5 1 6 c t 1 4 g n d c t v d d ? 1 0 0 u a 3 0 0 u a o n / o f f o n / o f f
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 9 / 10 8.6 ? eg118 6 ??? v dd ? 13 14 ???? ?? fb ?? v dd ?? eg118 6 ?? 5ma ??? v dd ???? v dd ??? 3 .5v ? eg118 6 ??? pwm ?? ?? ? ? v dd ???? vdd ??? 6.5v ?? pwm ????? ?????? EG1186 ???? 8.7 eg118 6 ???????????????? ? eg118 6 ?????????????? l= ? vin ? vout ? fs pwm ?? iripple ? ???? iripple 30% 8.8 ? ??????????????? ? dc - dc ???????????? EG1186 ?? ?? 5v ????? 3 - 5v ??? mos ? 8.9 co ??? dc - dc ????????? ??? esr ????????????? vo= i l esr + ? vo ?? i l ? ? fs pwm ? esr ? 8.10 ?? eg118 6 ? adj ???????? 1.35v ? 8.10a ?? vout= 1+r1/r2 *1.35v ? 12.45v ? r1 ? 8.2k r2 ? 1k ? vout= 1+8.2/1 *1.35v=12.45v ? 8.10a EG1186 ? ? f b r 1 r 2 a d j 2 v r e f = 1 . 3 5 v o s c 1
???? EG1186 ?? ?????? 2017 ? ???? ? www.egmicro.com 10 / 10 9. ?? 9.1 sop16 ?? ?? mm min max a 1.350 1.750 a1 0.100 0.250 a2 1.350 1.550 b 0.330 0.510 c 0.190 0.250 d 9.800 10.000 e 3.800 4.000 e1 5.800 6.300 e 1.270

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