正激式开关电源变压器设计V1.0

蓝色单元格为输入参数红色单元格为输出参数1.定义SMPS规格最小输入电压(V_line.min)180V.rms最大输入电压(V_line.max)264V.rms输入电压频率(fL)60HzVoIoPoKL用于反馈控制的第一输出5V15A75W42第二输出3.3V10A33W18第三输出12V6A72W40第四输出VA0W0最大输出功率(Po)=180.0W估计效率(Eff)70%最大输入功率(Pin)=257.1W2.确定DC整流滤波的电容和DC电压范围DC电容器235uFDC电压纹波=28.7V最小DC电压=226V最大DC电压=373V3.确定最大占空比（Dmax）最大占空比0.4匝数比（Np/Nr）10.67最大标称MOSFET电压=747V4.确定输出电感器纹波的电流因数输出电感器电流纹波因数KRF0.15最大峰值流电流3.27ARMS漏电流1.81AFPS内置的电流限制值4A5.确定变压器的合适磁芯和最少初级匝数FPS的开关频率(kHz)67kHz最大磁通密度增量0.25TER28/34磁芯的AP估计值=12816mm4AP=12047mm4设计助手ver.1.0针对采用复位绕组的正激开关电源磁芯的截面积=81.40mm2AE=81.4mm2最少初级匝数66.27TAW=148mm26.确定每个输出匝数VoVF#ofturnsVcc(采用VCC起始电压)15V1.2V4.80=5用于反馈的第一输出5V0.4V4.00=4第二输出3.3V0.4V2.74=3第三输出12V0.5V9.26=9第四输出0V0V0.00=0VF:整流二极管正向压降复位绕组67初级匝数67-足够的匝数AL值(无间隙)2520.00nH/T2变压器磁化电感=11.29mHER28/347.确定每个变压器绕组的导线直径并联Irms(A/mm2)初级绕组0.5mm1T1.81A复位绕组0.2mm1T0.04AVcc绕组0.2mm1T0.10A第一输出绕组0.68mm4T9.52A第二输出绕组0.68mm3T6.35A第三输出绕组0.68mm2T3.81A第四输出绕组mmT0.00A铜面积=31.002795mm2填充系数0.25ER28/34所需的窗口面积124.01118mm2AW=148mm2-OK8.确定电感器（耦合电感器）的合适磁芯和匝数电感器磁芯的截面积81.4mm2ER28/34饱和磁通量密度0.35T第一输出的电感（L1）5.66uHL1的最少匝数=8.22TL1的实际匝数=9=9TL2的匝数=6.75=7TL3的匝数=20.25=20TL4的匝数=0.00=0T9.确定每个电感器绕组的导线直径并联Irms(A/mm2)L1用绕组0.68mm5T15.06AL2用绕组0.68mm3T10.04AL3用绕组0.68mm2T6.02AL4用绕组0mm0T0.00A铜面积=38.476304mm2填充系数0.27ER28/34所需的窗口面积142.50483mm2AW=148mm2-OK10.确定次级侧的整流二极管反向电压Rms电流3.181.39直径8.309.228.30#DIV/0!#DIV/0!6.565.835.25直径9.21Vcc二极管43V0.10A第一输出二极管22V9.52A第二输出二极管17V6.35A第三输出二极管50V3.81A第四输出二极管0V0.00A11.确定输出电容器第一输出电容器4400uF20mΩ1.3A0.09第二输出电容器4400uF20mΩ0.9A0.06第三输出电容器2000uF60mΩ0.5A0.11第四输出电容器0uF0mΩ0.0A#DIV/0!12.设计复位电路复位二极管RMS电流0.04A复位二极管的最大电压746.7V13.涉及反馈控制环路控制-输出DC增益=3控制-输出零点=1,809Hz控制-输出极点=261Hz分压电阻(R1)5㏀分压电阻(R2)5㏀光耦电流调节电阻(RD)1㏀431偏置电阻(Rbias)1.2㏀反馈引脚电容(CB)=10nF补偿电容(CF)=100nF补偿电阻(RF)=1㏀反馈积分器增益(fi)=955.41Hz反馈零点(fz)=265.39Hz反馈极点(fp)=5307.86Hz169.8078323645.3416-3-86.72259.78487033241.4725-5-84.89409.72480142837.3840-7-81.86639.58236352433.4463##-77.321009.24036582029.42100##-70.421608.46816121725.33160##-60.632507.07173531421.47250##-49.394004.77208381317.46400##-37.856301.96652121213.74630##-29.581000-0.9855741110.281000##-25.51600-3.545124117.3211600##-26.162500-5.226318105.0782500##-31.254000-6.2187229.22.9734000##-40.776300-6.6720727.30.6446300##-52.2810000-6.8719394.5-2.3210000-9-63.5516000-6.954871.1-5.8716000-6-72.5925000-6.986693-3-9.5125000-4-78.62电流纹波ESR电容值电压纹波voRDiDRbiasR1R2BibiasCBvFB1:1FPSvo'CFRF431-40-2002040608010100100010000100000Gain(dB)Contorl-to-outputCompensatorT01010010001000010000040000-7.000219-6-13.540000-2-82.8263000-7.005406-10-17.463000-1-85.42100000-7.007521-14-21.4100000-1-87.11-120-90-60-30Phase(degree)EC35EC41EC52EC70EE05EE6.3EE8EE10/11EE13EE16EE19%EE19/16%EE20/20/5%EE22%EE2329SEE25/19EE25.4EE2825EE30EE30/30/7EE3528EE40EE4133EE42/21/15EE42/21/20EE47/39EE50EE55/55/21EE57/47EE60EE50.3EE62.3/62/6EE65/32/27EF12.6EF16EF20EF25EF32EFD10EFD12EFD15EFD20EFD25EFD30EI12.5EI16EI19EI22EI25EI22/19/6EI28EI30EI33/29/13EI35EI3530EI40EI50TEI60TEI70TEP7TEP10TEP13TEP17TEP20EPC10EPC13EPC17EPC19EPC25(A/mm2)EPC25BEPC27EPC30ER9.35ER9.5ER11.5ER14.5ER1916ER25.5ER25/51ER28/28ER28/34ER30/16ER30/35ER35/34ER35/41ER39/36ER39/42ER40/45ER42/15ER42/20ER49/54ER54/36(A/mm2)ETD19ETD24ETD29ETD34ETD39ETD44ETD49ETD54ETD59LP22/13LP23/83.181.398.309.228.30#DIV/0!#DIV/0!6.565.835.259.21LP32/13RM4RM5RM6RM8RM10RM12RM14PTS14/8VPTS18/11VPTS23/11VPTS23/18VPTS30/19PQ20/16PQ20/20PQ26/20PQ26/25PQ32/20PQ32/30PQ35/35PQ40/40PQ50/50UU8.5UU9.8UU10.1UU10.5UU13.5UU15.22UU15.23UU15.7UU17UU19.7UU21UU25#################电压纹波voRDiDRbiasR1R2BibiasCBvFB1:1FPSvo'CFRF431100000100000###CORE參數對照表Dimensions(mm)ApAeAwALLeA*B*C(cm4)(mm2)(mm2)(nH/N2)(mm)EC353C8535.3*17.3*9.51.374184.30163.002100.0077.40EC413C8541.6*19.5*11.62.5894121.00214.002700.0089.30EC523C8552.2*24.2*13.45.5980180.00311.003600.00105.00EC703C8571.7*34.5*16.417.8281279.00639.003900.00144.00EE05PC405.25*2.65*1.950.00132.635.00285.0012.60EE6.3PC406.1*2.85*7.950.00153.314.46405.0012.20EE8PC408.3*4.0*3.60.00917.0013.05590.0019.47EE10/11PC4010.2*5.5*4.750.028712.1023.70850.0026.60EE13PC4013.0*6.0*6.150.057017.1033.351130.0030.20EE16PC4016*7.2*4.80.076519.2039.851140.0035.00EE19PC4019.1*7.95*5.00.124323.0054.041250.0039.40EE19/16PC4019.29*8.1*4.750.119122.4053.151350.0039.10EE20/20/5PC4020.15*10*5.10.157231.0050.701460.0043.00EE22PC4022*9.35*5.750.159041.0038.792180.0039.40EE2329SPC4023*14.7*60.436835.80122.001250.0064.90EE25/19PC4025.4*9.46*6.290.312840.0078.202000.0048.70EE25.4PC4025.4*9.66*6.350.317340.3078.732000.0048.70EE2825PC4028*12.75*10.60.852586.9098.103300.0057.70EE30PC4030*13.15*10.70.7995109.0073.354690.0057.70EE30/30/7PC4030.1*15*7.050.745559.70124.872100.0066.90EE3528PC4034.6*14.3*9.31.339884.80158.002600.0069.70EE40PC4040*17*10.72.2000127.00173.234150.0077.00EE4133PC4041.5*17*12.72.8260157.00180.004200.0079.00EE42/21/15PC4042*21.2*154.9484178.00278.003800.0097.90EE42/21/20PC4042*21.2*206.4625235.00275.005000.0097.80EE47/39PC4047.12*19.63*15.624.7529242.00196.406660.0090.60EE50PC4050*21.3*14.65.7343226.00253.736110.0095.80EE55/55/21PC4055.15*27.5*20.713.67643