1、 0 0 2012/10/314 71 !9Z#L s ( !9Z#L s !9+i Y v !9 - 71 !9 71 Ba l N+1Z T HB ! 1C#p H V s Y !b=a s 71 #p H!z V g olg vFi O HT B_ ! !z Z#p HY H o# MFYV =5i B H_ !i ( /!z=Z T Mi HWW/ gV7“dTb ?M vF H B #pH!z v Y g T !zB s l a 71Bt1 HWW Ta V L“d _Y !aS e !a 1 V Lb 1s V“d “1Tb5 ? B H ! ?r rT ;$S W 3 f / V
2、 ? B IE 7b 71 71 !9 71 L !9 !9Z#L sBa .d Z 1a 2YVsY =5 “ ”Z Ti 9L T V L CWM b 2a =5 & Vf vV7 V1Vout Q L FB Vf=5i =5L V7hly =5 Yb“L L b Z A 9LVout=V1 Vf Vout*5%l Vf H V ?C 45b 3.3V 0.3V=3.0Vl 3.14VC10470UF/CGC15470UF/CGC9470UF/CGR81BR81CR40430RR471KR904.99KR481KR89NCC17470UF/CGC18470UF/CGR875.1KD24PF
3、R10V45CTR39*C7 *U1APC123D35L11D34B340AU4TL431R86100R78+5VSB* 71 L !9yv q%=5 VfB 0.3V F Z T 5? Jb B L= “dB 1 v y7 V=5%vbIoutVf =P Zv q MOSFET5 9.d =5b=a s q +MOS5Z TS Z 1aL m#T SGNDC192.2UFZD212VR512.21KR5747KQ18PMBT4403R522.21KR6220KC21NCR5847KQ2PMBT4401Q3PMBT4401R234.7RC2410NFQ24015N04NQ25015N04NR5
4、4100KQ202N7002C401500UF/16V+12VOUTPWOK+18V+12VinR1NCD19R58Q2R234.7RR20Q24RDS(on)+12VOUTVCCM+12VFVaVb VcD19R58Q2R54100K+12VOUTVCCM+12VFVaVb VcAa H Va=Vc+Vd=Vq+Vr,y Q2YHq Va-VbVd, Va-VbVb, Vb =Vc, VaVc / ( T 1aL mCB7DB5RB311098UB2C567411UB2ARB16RB25RB19CB5DB6RB21RB14RB15RB17CB6CB13QB2RF31RB41VCCMRefVC
5、CM“ L (VbVaVc 3a RB314RB31 % ( T H Kv 71 ( !9Z#L saL kV5#2a y AC ONOFF H CS-BUS 51a |“L q =s ( rTv 1 2“q1098UB2CLM29 0 2121314UB2DLM29 0 2RB25MF24KRB281KDB61N4148CB11104RB27205KRB291KRB26200KCB12104RB24MF36KCB10104RB39MF3.3KRB371KRB35300RRB38820RRB36300R-5VRB341.2KRB331.2K3.3VF 3.3VG+2.5VRB4147RR912
6、KR92200KR93100KRB4047RQB32N7002DB8RB551V-30Q82N7002D391N4148QB42N7002RB371KRB35300RRB38820RRB36300R-5VGRB341.2KRB331.2KD381N4148+2.5V+5VSBPGO( L BQ YV# H b“ ( L#YV PG| ( L ZTr ( L AC ONOFF 3 5bCF7104DF51N4148RF139.1K1098UF2CLM29 0 2567411UF2ALM29 0 2RF16150KRF181MRF20MF6.8KRF25MF15KRF191.5MRF2310KCF
7、5105DF61N4148CF9104RF2210RRF2130KRF149.1KRF1515KCF10104CF8104RF17100KCF6105CF3105QF22N4401DF71N4148RB3210RRF42220RDF9RB551VVCCMVCCMshareVCCM+2.5VREF+5VB+5VA1234 5UP2FP130AKRVccRP8MF200KRP5MF1KRP6MF1KRP7MF1K 71 ( !9Z#L sUC3902L Ba TI UC3902 ST L6615 ( e Z 2a CS-BUS|“L 1a|“L (A) Z TB SenseE 4aQ L 3a C
8、S-BUS|L !9+i Y 71 !9+i YBa VE L Aa VE &/5 h P P VE H h L iBE4 V LbDF2DF1QF1RF1 RF2RF3RF4RF5RF6RF0RF7RF30CF1CF2ICF1RF11CF13RFA5VD5Vsense5VD5VBDF2DF1QF1RF1 RF2RF3RF4RF5RF6RF0RF7RF30CF1CF2ICF1RF11RF12CF13RFA5VD5Vsense5VD5VBDF2DF1QF1RF14RF1 RF2RF3RF4RF5RF6RF0RF7RF30CF1CF2ICF1RF11RF12CF13RFA5VD5Vsense5VD
9、5VBBa VE5 SMD DIP hV VM P bCa VEL k OK h:% b # 71 !9+i Y=a !9 H 1a C y W :C TC2ays W |L W 7 Q 7 sV7 b| B“ | #B“3a H ( H -| - -PS-ON H PS-ON - -| -+12V|PS-ONYV VS( OK 7 1 b 71 !9+i Ya “d !9 # LEDL 1a 1 pTC H 1T#pT 2A Ub2a L Q22N7002Q42N7002Q32N7002R11100KC170.1UFR1447.5K+1-2BER1BUZZERR1510RC201UFC180
10、.1UFSGNDALERT#/#PGPSON#+5VOR1947.5KD4BAS316 R20100KR28C4.75KR30C1.21KR23C100KQ5C2N7002Q6C2N700212CON2CLEDPWGD+12VF +5VSBLED-GRN LED-REDSGNDR29C1.21K L LEDA UL 3a q59 9R q 65% 1a A aW T Q z Ba 5 a 2 aY 2 qB 2a LED1 3F H LED8V s b4a yp 1ayp a 555 ICZ T e rW T 2rT 2a !9 h L iB 104 2 5 3a LED#L z 4a LED
11、 q h1V VTb 71 !9+i Ya !91a !91 T H f /T C |L|La Q La PGL Y L t|LB YV “B B V ?B 7 f / s b2a 3 sGW-2UR550 MB Q 3 H?C 3%P f B MMBT222A MOS5D E bRD3MF10KRD42.7K 0805CDA25V/225CDB25V/225+12VAE/BQC52222ACC23104/50VRC62MF510RRC100MF2.2RVS33B/E L L RD2MF1KRD3MF10KRD42.7K 0805CDA25V/225RD20MF30K+12VAE/BQC522
12、22ACC23104/50VRC62MF510RRC100MF2.2RVS33B/E L L 3a !9yp 1a L !9 H |L h1C 7 ?FE hF59 PG|L FB5b 2a !9 H1 “ Lb 71 !9+i Ya e#L !9CSGNDSGNDSGNDFAN FAIL DETECTION32184IC1CALM393D5CBAS316D4CBAS316C3C1UFC2C1UFR6C47KQ1CPMBT4401D1CBAS316D3C0RR1C49.9KR3C9.09KC1C0.1UF5VREFFMON1FANFAIL+12VSR31C2.21K+5VSBR33C1MC14
13、C0.1UFSGNDFAN CONTROL567IC1CBLM393R15C1.21KC7C1UFR8C2.21KR12C2.49KR13C2.49KC10C1NFR4C9.09KR10C2.21KIC2CTL4315VREF+12VS FCTL +5VSB12CON3C12345 6 7 8IC3CHY539OTPVCCVINPWMGNDGNDGNDGND+12VSC9C1UFR9C4.75K R14C100KQ3C2N7002R21C100KR5C9.09KC12C0.1UFR27C9.09KPWGDR18C0R1VREFR24C1MC13C0.47UFC11C0.47UFD9CBAS31
14、6D10CBAS316OTP#1VREF 5VREFC6C0.1UFC16C0.1UFQC82222A QC9KTB772-YRC28MF1.5KRC45MF2KRC47MF1KRC46MF32.4KRC44680R RC17MF10KNTC220KCC22474 ZD57V5C ZD4C7V5CRC231.8K RC26MF10K123FAN4123FAN3QC32222A DC9IN4148 DC10IN4148 QC10KTB772-YRC5515K RC5615KZD67V5C CC21224ZDCC2V4AZD5C7V5C CC26474 C0250V/10UFC0350V/10UF
15、FANvccFAN-protectOTPFan-GNDVS5a ( L !9 Ba V4L eL L eL 1 L L 5 e q v eq? 2 L L e e eq lb L 3 H1 12V1 0.1V = v !9Ba qvlO v !9 B-$MM B8 0, B-$880,58/!z ypO q =a ( L v%! CF7104DF51N4148RF139.1K1098UF2CLM2902567411UF2ALM2902121314UF2DLM2902RF16150KRF181MRF20MF6.8KRF25MF15KRF281KRF191.5MRF2310KCF5105DF61N
16、4148CF11104CF9104RF2210RRF27205KRF291KRF2130KRF149.1KRF26200KRF1515KCF12104CF10104CF8104RF17100KCF6105CF3105QF22N4401DF71N4148RB3210RRF392KRF42220RDF9RB551VVCCM5VF 5VGVCCMshareVCCM+2.5VREFLSADJEAOCSOGNDVDDCS-CS+SGNDR23B51.1RR24B10RR26B100RR43B100KC10B1NFR72B0RC28B0.01UFC29BNCC26BNCR28B41.2KC4B 1NFR10B39RC19B1UFR29B41.2KC12B1NFR30B10K12345678IC2BUCC39002ISENSE+ISENSE-+12VOUTS ISHARE +12VF2.5VREF
