DCM 功率因數(shù)校正器設(shè)計(jì)

1、 Design of Active Power Factor Correctors IC AbstractPower factor corrector (PFC can be classified into passive power factor correction and active power factor correction. Capacitance and inductance are used to make up the filter circuit for the passive power factor correction and ICs for the power

2、factor correction are used for the active power factor correction to control the boost voltage and correct the input current from the rectified voltage to obtain the better power.There are two kinds of model, discontinuous conduction mode (DCM and continuous conduction mode (CCM, for the realization

3、 of power factor controls. The discontinuous current mode is used in power factor correction for the low power system, but the continuous current mode is used for higher power system.One cycle control (OCC technology is proposed to construct a power module with high power factor and high efficiency,

4、 and that is simple, reliable and lower counting of part. The conventions discontinuous conduction mode and continuous conduction mode are compared with one cycle control mode for improving the power factor and efficiency.Keywords: Power Factor Corrector (PFC, Discontinuous Conduction Mode(DCM, Cont

5、inuous Conduction Mode(CCM, One Cycle Control(OCC(i(iiAbstract (iii (iv (viii (xii (11.1 (11.2 (31.3 (41.4 (5 (62.1 (62.2 CCM PFC (82.3 DCM PFC (13 (183.1 (183.2 OCC PFC (193.3 OCC PFC (22 (254.1 (254.2 DCM PFC (274.3 CCM PFC (304.4 OCC PFC (33(415.1 (415.2 (445.3 (475.4 (595.5 (60 (616.1 (616.2 (62

6、 (632.1 (72.2a (72.2b (72.3 (82.4 CCM PFC (92.5 CCM PFC (112.6 (112.7 (112.8 DCM PFC (142.9 DCM PFC (152.10 (163.1 (183.2 OCC PFC (194.1 EMI (254.2 (264.3 DCM Boost PFC (274.4 CCM Boost PFC (304.5 OCC Boost PFC (344.6 OCC PFC ( (354.7 OCC PFC ( (355.1 100V AC (415.2 115V AC (425.3 180V AC (425.4 230

7、V AC (435.5 264V AC (435.6 100V AC (445.7 115V AC (455.8 180V AC (455.9 230V AC (465.10 264V AC (465.11 200W PFC 115V AC (475.12 300W PFC 115V AC (485.13 400W PFC 115V AC (485.14 200W DCM PFC 115V AC (495.15 300W DCM PFC 115V AC (495.16 400W DCM PFC 115VAC (505.17 200W CCM PFC 115V AC (505.18 300W C

8、CM PFC 115V AC (515.19 400W CCM PFC 115V AC (515.20 200W OCC PFC 115V AC (525.21 300W OCC PFC 115V AC (525.22 400W OCC PFC 115V AC (535.23 200W PFC 230V AC (535.24 300W PFC 230V AC (545.25 400W PFC 230V AC (545.26 200W DCM PFC 230V AC (555.27 300W DCM PFC 230V AC (555.28 400W DCM PFC 230V AC (565.29

9、 200W CCM PFC 230V AC (565.30 300W CCM PFC 230V AC (575.31 400W CCM PFC 230V AC (575.32 200W OCC PFC 230V AC (585.33 300W OCC PFC 230V AC (585.34 400W OCC PFC 230V AC (59 1 DCM (282 CCM (313 OCC (364 115V AC (605 (601.1 (Power Factor Corrector, PFC 1 (AC AC AC (Pulse Width Modulation, PWM AC PFC AC

10、AC AC 1 (Discontinuous Conduction Mode, DCM (Continuous Conduction Mode, CCM ( DCM 0 MOSFET MOSFET 1 DCM DCM RI2 MOSFET MOSFET CCM DCM MOSFET CCM RI2 MOSFET 200300W 200W DCM21.2 DCM CCM DCM PFC CCM PFC PFC (Electromagnetic Interference, EMI3-6CCM 5,61. 2. 3. 4. (One Cycle Control, OCC CCM PFC CCM PF

11、C DCM PFC1.3OCC PFC DCM PFC CCM PFC DCM PFC CCM PFC 300400W CCM PFC 300400W OCC PFC CCM PFC CCM PFC PFC OCC PFC1.4 DCM CCM OCC OCC DCM CCM 2.1 100120V 200240V 5060Hz 90 90 090 090 cos *VI P = P V I V I cos 01 (PF V I 0 1cos = VI P = V I 90 0cos = 00*=VI P 7 2.1 2.2a, 2.2b 70% 2.1 2.2a 2.2b Boost Top

12、ology 90265VAC Vo 400V PFC IC 2.3 2.2 CCM PFC 2.4 2.4 CCM PFCVpCV A in VinBV pB V A in Q A C m 6,7CCM PFC 2.5V P I in 2.6 V C V S V C VSV C VSV C V QS2.5V L L Iin2.6 ab bV C VSQVinL D C L I 2.6 bcLcV C VSQ 2.7 2.5 CCM PFC 7 2.6 72.7 8 PWM 7 IC IC 8 (a (2.1(min(max(2rms i sw rms i I in V r f I k C L=

13、 (2.1LI k L I 0.20.3iiV V r =r 1 10 r=0.01 0.1(b (2.2(min22*2OO holdO O V V t P C =(2.2(c (2.3If D V L sw rms in =(min(2 (2.3 Oi V V D (min21= (2.4(min(_2rms in in pk link V P dI I dI I = (2.5dI 20%2.3 DCM PFC DCM PFC 2.8 AC m 5R 6R C V S R m V 3R 4R m V m Q S S R S V Q 7 2.8 DCM PFC 72.9 Q Vd L L I

14、 (a b S R S V m S V V = (b Current Comparator RS RS Flip-Flop R S RS Qd G V Q L V d V D L R 5C b c L R 5C L I 0 cL I 0 2.8 RS S R S m V V > RS Q d Q Q GS V Q L V d V L Q L L S V m m V c d L I 2.10 2.9 DCM PFC 72.10 92.8 l I 3C L I DCM CCM 9 (a (2.6oi rms in V k P I =2(max( (2.5 o rms i V V k (min

15、(2=(min(max(2rms i SW rms i in V f I C = (2.6 1 10 =0.01 0.1(b (2.7(min22*2OO hold O O V V t P C =(2.7(c (2.8Oi sw rms i O rms iV P f V V V L *2*2(*(min(2=(2.8 offon swT T f +=1 (2.9(2rms i Lpk on V I L T =(2rms i O Lpkoff V V I L T =(2.10(*2*2rms i i Lpk V P I = (2.11 3.1 PWM 3.1 ref V 3.1 10 s f (

16、t X (t V ref (t V ref (t X (t Y (3.1 10-12:(/(/1(0t D t X dt T t X dt t X T t Y on onT T s s = (3.1(t D (3.2 :=sonT ref T dt t V dt t X 0(/1(/1(0t Vref dt t V T dt t X T t Y son T ref s T s =(3.23.2 OCC PFC CCM PFC PFC 3.2 3.2 OCC PFC PWM PWM 11-13 PFC PFC PFC OCC ( CCM 1kW 40% 50% 14 (a (3.3 in C 1

17、 10 r=0.01 0.1 EMI (min(max(*2rms i sw rms i I in V r f I k C L= (3.3(b (3.4 (min22*2OO O O V V t P C (3.4O V (minO VPFC (c (3.5 Lsw pk in I f D V L =*(min(max( (3.5(min(min(*2rms in pk in V V = Opk in O V V V D (min(=(3.6(max(*2.0pk in L I I = 2(max(max(Lpk in pk L I I I += (3.7 (pk L I offon sw T

18、T f +=1(3.83.3 OCC PFC CCM PFC15 (1 sense R (3.9OVLL pk in sense sense K I I V R *2(max(max+=(3.9 (2 PFC 120Hz COMP (3 50kHz IGBT 200kHz MOSFET (4 / OCC CCM PFC 1 IR1150 40% 50% 120W PCM PFC OCC 10% 4.1 EMI 4.1 L D L X 1X C 2X C Y Y CCEMI EMI EMI 4.1 EMI 4.2 Va C Vc 4.2 7 Boost PFC OCC Boost PFC (ST

19、Microelectronics L6562(DCM Boost IC (International Rectifier IR1150(OCC Boost IC (Fairchild ML4824(CCM Boost IC PFC , 4.3 4.4 4.54.2 DCM PFC 4.3 DCM PFC 4.3 DCM Boost PFCDCM PFC IC(L6562 IC DCM PFC IC 60 70 DCM PFC IC 1 DCM(rms90Vac(min264Vac(max 4763Hz 95%(min 0.99400Vdc10ms(min 40KHz5% (maxnF VK A

20、(max(=F msW V V t P C OO hold O O µ69320400102002222(min22=H W K V P f V V V L Oi sw rms i O rmsi µ3284002(2(min(2=200W DCM PFC 1024nF 69 F Boost 328 HnF VK A(max(=F msW V V t P C OO hold O O µ104320400103002222(min22=H W K V P f V V V L Oi sw rms i O rmsiµ2194002(2(min(2=300W DC

21、M PFC 1535nF 104 F Boost 219 HnF VK A(max(=F msW V V t P C OO hold O O µ139320400104002222(min22=H W K V P f V V V L Oi sw rms i O rms i µ164400421402902400(9022(2(min(2=400W DCM PFC 2070nF 139 F Boost 164 H CCM PFC OCC PFC DCM PFC CCM PFC OCC PFC 1000nF 400W120 F/450V Boost 330 H CCM PFC

22、OCC PFC4.4 CCM PFC DC/DC converter PWM 4.4 CCM Boost PFCCombo PFC IC(ML4824 CCM ML4824 2 2 CCM(rms90Vac(min264Vac(max 4763Hz 95%(min 0.99380Vdc10ms(min 100KHz5% (maxnF K A V r f I k C rms i SW rms i I in L12590(max(=L I k ( 30%ininV V r = ( 10% F msW V V t P C OO hold O O µ74300380102002222(min

23、22=mH K If D V L sw rms in 3.166.010067.09022(min(=67.03809021= 200W CCM PFC 125nF 74 F Boost 1.3mHnF K AV r f I k C rms i SW rms i I in L18890(max(=F msW V V t P C OO hold O O µ111300380103002222(min22=H K If D V L sw rms in µ85399.010067.09022(min(=67.03809021=D A W300W CCM PFC 188nF 111

24、 F Boost 853 HnF K AV r f I k C rms i SW rms i I in L24890(max(=F msW V V t P C OO hold O O µ147300380104002222(min22=H K If D V L sw rms in µ64032.110067.09022(min(=67.03809021=D A W400W CCM PFC 248nF 147 F Boost 640 H DCM PFC OCC PFC DCM PFC DCM PFC 470nF 400W 120 F/450V Boost 1.3mH DCM PFC OCC PFC4.5 OCC PFC 4.3 DCM PFC4.4 CCM PFC DCM PFC CCM PFC OCC PFC 4.5 OCC Boost PFC4.6 4.7 SMD(SO-8 IC EMI BOOST 3 4.6 OCC