1、L6562临界模式PFC设计2014年07月1号 By SamYang设计目标参数最低输入线电压均根值 VACmin = 85 Volts最高输入线电压均根值 VACmax = 265 Volts最低输入线电压频率 fL = 47 Hz输出功率 Pout = 80 W输出电压 Vout = 400 Volts期望效率 = 93 %输入功率因数 PF = 0.99最大输出过冲电压 OVP = 55 Volts输出最大低频率纹波电压 Vout = 20 Volts功率下降时最小输出电压 Voutmin = 320 VoltsHoldup Capability tHold = 10 ms最低开关频率
2、 fsw = 35 kHz最高环境温度 Tambx = 50 升压电感相关计算最大输出功率 Pin = 86.02 W额定输出电流 Iout = 0.20 Amps输入均根值电流 Iin = 1.02 Amps升压电感值 LP = 735 uH选取实际电感值 L = 700 uH气隙与磁路比值 Lgap/Le = 2.5 %估计需要电感体积 Ve = 2185 mm3实际工作最低频率 f1sw = 36.8 kHz最大匝比(主线圈/ZCD线圈) n1 = 10.4实取匝比(主线圈/ZCD线圈) n = 9升压电感峰值电流 ILpk = 2.89 Amps升压电感均根值电流 ILrms = 1.
3、18 Amps升压电感交流电流 ILac = 0.59 AmpsMOS,续流二极管,整流桥相关计算MOS管均根值电流 ISWrms = 1.02 AmpsMOS管功耗 Pmos = 1.56 W续流二极管均根值电流 IDrms = 0.60 Amps续流二极管正向压降 Vdiode = 0.85 Volts续流二极管通态电阻 Rdiode = 165 m续流二极管功耗 Pdiode = 0.23 W续流二极管温升比最大限值 Rth(j-a) = 328 /W输入桥堆均根值电流 Iinrms = 0.72 Amps输入桥堆平均值电流 Iin_avg = 0.46 Amps输入桥堆电阻 Rbrid
4、ge = 70 m输入桥堆正向压降 Vth = 1 Volts输入桥堆功耗 Pbridge = 1.99 W输入输出电容相关计算输入滤波电容 Cin = 273 nF最小输出滤波电容计算值 Cout = 39 uF输出电容纹波电流 Icrms = 0.56 Amps实际输出滤波电容 Co = 47 uF实际Holdup Capability t1Hold = 13.59 ms实际输出纹波电压 V1out = 14.41 Volts乘法器输入分压电阻,输出分压电阻,反馈电阻电容等相关计算电流检测电阻最大值 Rcs = 553 mMult引脚最大峰值电压设定值 Vmul_max = 2.6 Vol
5、tsMult引脚最小峰值电压 Vmul_min = 0.83 VoltsMult引脚下位电阻最小值 R1mul_L = 13.00 k选择的Mult下位电阻 Rmul_L = 13.00 kMult引脚上位电阻最小值 Rmul_H = 1861 k输出电压采样上位电阻最大值 R1out_H = 1375 k选择的电压采样上位电阻 Rout_H = 1300 k输出电压采样下位电阻 Rout_L = 8.17 k零电流检测电阻 RZCD = 48.4 ktyp1反馈电容最小值 Ccomp = 784 nFtyp1反馈电容实际取值 C1comp = 1000 nFtyp2反馈串联电阻 Rcomp_
6、s = 12 ktyp2反馈串联电容 Ccomp_s = 1000 nFtyp2反馈并联电容 Ccomp_p = 390 nF增益曲线零点频率 fz1 = 13.3 Hz增益曲线初始极点频率 fp0 = 14.1 Hz增益曲线极点频率 fp1 = 47.3 Hz1 0 0 01 0 01 01- 1 0 5 - 9 0 - 7 5 - 6 0 - 4 5 - 3 0 t y p 1 相 频 特 性 t y p 2 相 频 特 性F r e q u e n c y ( H z )Phaseangle(degrees)反 馈 网 络 相 频 特 性 图选取1.5-3之间的数值,使气隙比为1.5%-
7、3.0%1 8 01 5 01 2 09 06 03 001 1 0 1 0 0 1 0 0 0 最 低 电 压 频 率 与 相 位 关 系 最 高 电 压 频 率 与 相 位 关 系P h a s e a n g l e ( d e g r e e s )Frequency(kHz)L6562临界模式PFC设计2014年07月1号 By SamYang设计目标参数升压电感相关计算MOS,续流二极管,整流桥相关计算取接近3V的数值并使Vmul_minfz1输入输出电容相关计算乘法器输入分压电阻,输出分压电阻,反馈电阻电容等相关计算2 0 02 020 . 2- 2 5 - 2 0 - 1 5
8、- 1 0 - 5 0 5 1 0 1 5 2 0 2 5 3 0 t y p 1 反 馈 幅 频 特 性 t y p 2 反 馈 幅 频 特 性F r e q u e n c y ( H z )Gain(DB)反 馈 网 络 幅 频 特 性 图1 0 0 01 0 01 01- 1 0 5 - 9 0 - 7 5 - 6 0 - 4 5 - 3 0 t y p 1 相 频 特 性 t y p 2 相 频 特 性F r e q u e n c y ( H z )Phaseangle(degrees)反 馈 网 络 相 频 特 性 图0 60.0 583.11 59.7 573.65 58.4
9、535.510 56.9 488.215 55.3 441.720 53.8 396.325 52.4 352.230 51.0 310.035 49.7 269.840 48.4 231.945 47.2 196.850 46.2 164.655 45.2 135.660 44.4 110.065 43.7 88.070 43.1 69.775 42.6 55.480 42.2 45.185 42.0 38.990 42.0 36.895 42.0 38.9100 42.2 45.1105 42.6 55.4110 43.1 69.7115 43.7 88.0120 44.4 110.012
10、5 45.2 135.6130 46.2 164.6135 47.2 196.8140 48.4 231.9145 49.7 269.8150 51.0 310.0155 52.4 352.2160 53.8 396.3165 55.3 441.7170 56.9 488.2175 58.4 535.5179 59.7 573.6180 60.0 583.11 2 01 1 01 0 09 08 07 06 00 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 0 1 2 0 最 低 电 压 频 率 与 相 位 关 系 最 高 电 压 频 率 与 相
11、 位 关 系P h a s e a n g l e ( d e g r e e s )Frequency(kHz)1 2 01 1 01 0 09 08 07 06 00 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 0 1 2 0 最 低 电 压 频 率 与 相 位 关 系 最 高 电 压 频 率 与 相 位 关 系P h a s e a n g l e ( d e g r e e s )Frequency(kHz)F 20*lg(1/(2*R*C*f) =2f R C R11 25.85 23.00876 -90 -86.9001 6.2831
12、85 8.12 1000.0 8.122 19.83 17.05537 -90 -83.8473 12.56637 Z03 16.30 13.6429 -90 -80.8859 18.84956 0.01204 13.81 11.29198 -90 -78.0539 25.13274 13.262915 11.87 9.535488 -90 -75.382 31.415936 10.28 8.162276 -90 -72.8923 37.699117 8.94 7.057124 -90 -70.5989 43.98238 7.78 6.149253 -90 -68.5079 50.265489
13、 6.76 5.391532 -90 -66.6196 56.5486710 5.85 4.750761 -90 -64.9291 62.8318511 5.02 4.202595 -90 -63.4282 69.1150412 4.26 3.728658 -90 -62.106 75.3982213 3.57 3.314791 -90 -60.9505 81.6814114 2.92 2.949908 -90 -59.9489 87.9645915 2.32 2.625225 -90 -59.0884 94.2477816 1.76 2.333721 -90 -58.3563 100.531
14、17 1.24 2.069735 -90 -57.7406 106.814218 0.74 1.828674 -90 -57.2301 113.097319 0.27 1.606796 -90 -56.8142 119.380520 -0.17 1.40103 -90 -56.4833 125.663721 -0.60 1.208851 -90 -56.2285 131.946922 -1.00 1.02817 -90 -56.0417 138.230123 -1.39 0.857257 -90 -55.9157 144.513324 -1.76 0.694672 -90 -55.8437 1
15、50.796425 -2.11 0.539211 -90 -55.8198 157.079626 -2.45 0.389871 -90 -55.8387 163.362827 -2.78 0.245807 -90 -55.8954 169.64628 -3.10 0.106312 -90 -55.9856 175.929229 -3.40 -0.02921 -90 -56.1054 182.212430 -3.70 -0.16127 -90 -56.2512 188.495631 -3.98 -0.29028 -90 -56.4199 194.778732 -4.26 -0.41661 -90
16、 -56.6086 201.061933 -4.52 -0.54056 -90 -56.8149 207.345134 -4.78 -0.66238 -90 -57.0362 213.628335 -5.03 -0.78231 -90 -57.2708 219.911536 -5.28 -0.90051 -90 -57.5166 226.194737 -5.52 -1.01716 -90 -57.772 232.477938 -5.75 -1.13239 -90 -58.0355 238.76139 -5.97 -1.2463 -90 -58.3059 245.044240 -6.19 -1.
17、35899 -90 -58.5819 251.327441 -6.41 -1.47055 -90 -58.8624 257.610642 -6.62 -1.58105 -90 -59.1465 263.893843 -6.82 -1.69055 -90 -59.4334 270.17744 -7.02 -1.79909 -90 -59.7222 276.460245 -7.22 -1.90673 -90 -60.0124 282.743346 -7.41 -2.01349 -90 -60.3032 289.026547 -7.60 -2.1194 -90 -60.5942 295.309748
18、 -7.78 -2.2245 -90 -60.8848 301.592949 -7.96 -2.32881 -90 -61.1747 307.876150 -8.13 -2.43234 -90 -61.4635 314.159351 -8.31 -2.53511 -90 -61.7508 320.442552 -8.47 -2.63714 -90 -62.0363 326.725653 -8.64 -2.73844 -90 -62.3198 333.00881 0 0 01 0 01 01- 1 0 5 - 9 0 - 7 5 - 6 0 - 4 5 - 3 0 t y p 1 相 频 特 性
19、 t y p 2 相 频 特 性F r e q u e n c y ( H z )Phaseangle(degrees)反 馈 网 络 相 频 特 性 图54 -8.80 -2.83901 -90 -62.6011 339.29255 -8.96 -2.93888 -90 -62.8799 345.575256 -9.12 -3.03803 -90 -63.1561 351.858457 -9.27 -3.1365 -90 -63.4296 358.141658 -9.42 -3.23427 -90 -63.7002 364.424759 -9.57 -3.33135 -90 -63.9678
20、 370.707960 -9.72 -3.42776 -90 -64.2323 376.991161 -9.86 -3.52349 -90 -64.4936 383.274362 -10.00 -3.61855 -90 -64.7518 389.557563 -10.14 -3.71294 -90 -65.0067 395.840764 -10.28 -3.80667 -90 -65.2583 402.123965 -10.41 -3.89974 -90 -65.5066 408.40766 -10.54 -3.99216 -90 -65.7515 414.690267 -10.68 -4.0
21、8393 -90 -65.9931 420.973468 -10.80 -4.17505 -90 -66.2314 427.256669 -10.93 -4.26553 -90 -66.4663 433.539870 -11.06 -4.35537 -90 -66.6979 439.82371 -11.18 -4.44457 -90 -66.9261 446.106272 -11.30 -4.53315 -90 -67.1511 452.389373 -11.42 -4.62109 -90 -67.3727 458.672574 -11.54 -4.70842 -90 -67.5912 464
22、.955775 -11.65 -4.79512 -90 -67.8064 471.238976 -11.77 -4.88122 -90 -68.0184 477.522177 -11.88 -4.9667 -90 -68.2272 483.805378 -12.00 -5.05157 -90 -68.433 490.088579 -12.11 -5.13585 -90 -68.6356 496.371680 -12.22 -5.21952 -90 -68.8353 502.654881 -12.32 -5.30261 -90 -69.0319 508.93882 -12.43 -5.38511
23、 -90 -69.2255 515.221283 -12.54 -5.46702 -90 -69.4163 521.504484 -12.64 -5.54836 -90 -69.6042 527.787685 -12.74 -5.62912 -90 -69.7892 534.070886 -12.84 -5.70931 -90 -69.9714 540.353987 -12.94 -5.78894 -90 -70.1509 546.637188 -13.04 -5.86802 -90 -70.3278 552.920389 -13.14 -5.94653 -90 -70.5019 559.20
24、3590 -13.24 -6.0245 -90 -70.6735 565.486791 -13.33 -6.10192 -90 -70.8424 571.769992 -13.43 -6.17881 -90 -71.0089 578.05393 -13.52 -6.25515 -90 -71.1728 584.336294 -13.62 -6.33097 -90 -71.3344 590.619495 -13.71 -6.40627 -90 -71.4935 596.902696 -13.80 -6.48104 -90 -71.6503 603.185897 -13.89 -6.5553 -9
25、0 -71.8048 609.46998 -13.98 -6.62905 -90 -71.957 615.752299 -14.07 -6.7023 -90 -72.1069 622.0353100 -14.15 -6.77504 -90 -72.2547 628.3185105 -14.58 -7.13144 -90 -72.9621 659.7345110 -14.98 -7.47605 -90 -73.6204 691.1504115 -15.37 -7.80948 -90 -74.2339 722.5663120 -15.74 -8.13228 -90 -74.8065 753.982
26、2125 -16.09 -8.44498 -90 -75.3418 785.3982130 -16.43 -8.74811 -90 -75.8431 816.8141135 -16.76 -9.04215 -90 -76.3132 848.23140 -17.08 -9.32754 -90 -76.7547 879.6459145 -17.38 -9.60473 -90 -77.1701 911.0619150 -17.68 -9.87412 -90 -77.5614 942.4778155 -17.96 -10.1361 -90 -77.9306 973.8937160 -18.24 -10
27、.391 -90 -78.2794 1005.31165 -18.50 -10.6392 -90 -78.6093 1036.726170 -18.76 -10.881 -90 -78.9218 1068.142175 -19.01 -11.1166 -90 -79.2183 1099.557180 -19.26 -11.3465 -90 -79.4997 1130.973185 -19.50 -11.5708 -90 -79.7673 1162.389190 -19.73 -11.7897 -90 -80.022 1193.805195 -19.95 -12.0036 -90 -80.264
28、6 1225.221200 -20.17 -12.2125 -90 -80.4961 1256.637250 -22.11 -14.0741 -90 -82.3296 1570.796300 -23.70 -15.6154 -90 -83.577 1884.956350 -25.03 -16.9285 -90 -84.4784 2199.115400 -26.19 -18.0716 -90 -85.1594 2513.274450 -27.22 -19.0831 -90 -85.6915 2827.433500 -28.13 -19.9899 -90 -86.1187 3141.593550
29、-28.96 -20.8116 -90 -86.4691 3455.752600 -29.72 -21.5627 -90 -86.7616 3769.911650 -30.41 -22.2543 -90 -87.0095 4084.07700 -31.06 -22.8951 -90 -87.2222 4398.23750 -31.65 -23.492 -90 -87.4067 4712.389800 -32.22 -24.0507 -90 -87.5682 5026.548850 -32.74 -24.5756 -90 -87.7109 5340.708900 -33.24 -25.0708
30、-90 -87.8377 5654.867950 -33.71 -25.5393 -90 -87.9513 5969.0261000 -34.15 -25.9838 -90 -88.0535 6283.185R2 C1 C2 12 390 1000 3.141592654P0 P10.011285 0.00336714.10276 47.270381 0 0 01 0 01 01- 1 0 5 - 9 0 - 7 5 - 6 0 - 4 5 - 3 0 t y p 1 相 频 特 性 t y p 2 相 频 特 性F r e q u e n c y ( H z )Phaseangle(degrees)反 馈 网 络 相 频 特 性 图
