环路补偿参数设计_Buck

1、Compensator Design - Voltage-Mode Buck - CCMEnter parameters in shaded cells PCM1 Frequency Compensation ParametersVersion 0.2Vin (V) 30Error AmplifierRevision date: 25 june 2018Vout (V) 12Reference Voltage Vref (V) 1.25ModulatorLoad Current Iout (A) 4Bottom Feedback Divider Rfbb () 2,256D = 0.4000S

2、witching Frequency Fsw (kHz) 100Top Feedback Divider Rfbt () 19,400Rout = 3.00Swtooth wave peak Vosc (V) 1.25Target Loop Bandwidth Fc (kHz) 20.00Gdb=-25.2455Output Inductor L (H) 90.0Gp()=-156.6050Output Capacitor Cout (F) 336G = 18.292Output Capacitor ESR (m) 10.0穿越频率 (kHz) 20.00极点频率(kHz)fp=46.00相位

3、余量( ) 60零点频率(kHz) fz=1.1178原极点频率(kHz) fp0=1.3546Frequency Compensation MethodTypeType R1()R2()R3()C1(F)C2(F)C3(F)19,400.023,509.7483.21.508E-106.056E-097.161E-09Crossover Frequency (kHz) 20.42Phase Margin ( ) 59.70 Frequency (kHz) 10000.0Gain Margin (dB) 100.2Error Amplifier Gain/PhaseVout to Vcomp

4、1,000,000100,00010,0001,00010010-20020406080306090120150180Frequency (Hz)Gain (dB)Phase (deg)Control Loop Gain/Phase 1,000,000100,00010,0001,00010010-60-40-20020406080100-90-60-300306090120150Frequency (Hz)Gain (dB)Phase (deg)Modulator Gain/PhaseVcomp to Vout 1,000,000100,00010,0001,00010010-60-40-2

5、002040-180-150-120-90-60-300Frequency (Hz)Gain (dB)Phase (deg)极极点点选选取取参参考考1,000,000100,00010,0001,000-20020406080100120Frequency_fp (Hz)Gain_10Hz (dB)ErrorErrorPmod1ModulatorModulatorAmplifierAmplifierLoopLoopFrequencyFindModulatorLoop(10Hz)frequencyfrequencyGainPhaseGainPhaseGainPhaseIncrementCross

6、overFind 0PhaseGain(Hz)(rad/sec)(dB)(deg)(dB)(deg)(dB)(deg)From FswFrequencyFrequency(deg)(dB)1.00E+006.28E+0027.60.062.690.190.290.160.01000000010000000#DIV/0!261.3484731.02E+006.43E+0027.60.062.490.190.090.159.91000000010000000#DIV/0!260.9484631.05E+006.58E+0027.60.062.290.189.890.159.810000000100

7、00000#DIV/0!260.5484521.07E+006.73E+0027.60.062.090.189.690.159.71000000010000000#DIV/0!260.1484411.10E+006.89E+0027.60.061.890.189.490.159.61000000010000000#DIV/0!259.748431.12E+007.05E+0027.60.061.690.189.290.159.51000000010000000#DIV/0!259.3484191.15E+007.21E+0027.60.061.490.189.090.159.410000000

8、10000000#DIV/0!258.9484071.17E+007.38E+0027.60.061.290.188.890.159.31000000010000000#DIV/0!258.5483951.20E+007.55E+0027.60.061.090.188.690.159.21000000010000000#DIV/0!258.148383调调节节器器 Vo/Vc绘绘图图参参数数Ron = 0包括电感电阻在内的总串联电阻Rd = 0 resistance Rl, sense resistor Rs, MOSFET Ron and diode Rd.Rl = 0 For synchr

9、onous designs use Rd for the low-side MOSFET Ron.Rdc = 19401.250wz = 297,619wd = 33333wlc = 1.74E-04Version 0.2 CCM电压模式Buck补偿. 25 june 2018.If this function is not available, and returns the #NAME? error,1. 此文档是在TI设计工具的基础上做了一些修改.2. 当前功率级电路只列举了Buck电压模式，后续将持续加入其它模型.3. 此方法相对于K Factor法更加灵活。4.修正公式中将Vosc错

10、用为VrefG = P = Boost = K = K1s1Ks1GGCC)S(EA+=DLCZZCOssssVoscVinvvwwww+=2)(11+-+=zDLCZMODMODjjVoscVinPGwwwwwwww211COZRC1=)5 . 0Dm(1QC-=SLDONDCRRDRDRR+=LRoutD=wLCOUTLC=1wKGgKCCmFBHF=极极点点选选取取参参考考1,000,000100,00010,0001,000-20020406080100120Frequency_fp (Hz)Gain_10Hz (dB)Use equations from Error Amp Vc/V

11、o Plot Parametersgc = Pc (c) = Fz(Zero)Frequency(Hz)-39764.98-39764.86-39764.74-39764.62-39764.5-39764.37-39764.24-39764.11-39763.97COMPCCOMPCKR=CbwKR1KGgKCCEACmFBHF-+=()CEA2CmFB2COMPKR1KKGgK1KC+-=imRG1(mod) =Error Amp Vc/VoPlot Parametersfp0= 1354.586fz1=1117.794fz2=1117.794fp1=46000fp2=46000Type T

12、ype 2K Factor18.29225.2 dB G = 1/(Modulator Gain)0.0degrees P = Modulator Phase-30.0degrees Boost = M - P - 900.577 K = TAN (Boost/2 + 45)K Factor 2()1KCC2H FCO MP-=COMPCCOMPCKR=2211011111pZpZpOCsssssvvwwwww+=2211011111pZpZpE AE AjjjjjPGwwwwwwwwww+=HFCCZEAHFVMEAEAj1j1kAPG+-=Version 0.2 CCM电压模式Buck补偿

13、. 25 june 2018.If this function is not available, and returns the #NAME? error,1. 此文档是在TI设计工具的基础上做了一些修改.2. 当前功率级电路只列举了Buck电压模式，后续将持续加入其它模型.3. 此方法相对于K Factor法更加灵活。4.修正公式中将Vosc错用为VrefK1s1Ks1GGCC)S(EA+=KGgKCCmFBHF=Method 1Or:Method 218.292k1c = #DIV/0!kra = #DIV/0!kxa = #DIV/0!1.047k2c = #DIV/0!krb = #DIV/0!kxb = #DIV/0!k3c = #DIV/0!krc = #DIV/0!kxc = #DIV/0!XARBRAXBXARCRAXCCOMPkkkkkkkkC-=XARCRAXCRBXCXBRCCOMPkkkkkkkkR-=()23COMP1COMPCOMP2COMPCOMP21COMPCOMPOCkkCkCRskCRskCRs1v v +-=23COMP1COMPCOMP22COMPCOMP1COMPCOMPCCCkkCkCRjkCRkCRj1)(SINj)(C