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MPPT: SYNCHRONOUS BUCK DESIGN CALCULATOR
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REQUIRED PARAMETERS
VALUE
UNIT
NOTES
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Vmp64.4VSolar panel maximum powerpoint voltage (found in solar panel back sticker)
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Imp13ASolar panel maximum powerpoint current (found in solar panel back sticker)
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Vbatt52VMaximum battery voltage of your setup
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fsw39kHzMPPT buck converter pwm switching frequency (Visit Sheet #2)
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ASSUMED PARAMETERS
VALUE
UNIT
NOTES
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Vripple0.05VMPPT output ripple voltage (50mV is a good and ideal value)
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%Iripple35%
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%efficiency100%MPPT buck conversion efficiency (use 100% for ideal computation, 96% for actual computation)
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SOLVED PARAMETERS
VALUE
UNIT
NOTES
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Solar Power (Psolar)837.2WThe maximum solar panel power output
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Duty Cycle (D)80.74534161%The PWM duty cycle % at given parameter conditions
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Ripple Current (dl)5.635AMaximum continous current for MOSFET
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Peak Inductor Current (Ipk)
18.9175AMaximum current rating for inductor (selected inductor must have a higher saturation current)
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Inductance (L)45.55967675uHInductance for your MPPT's synchronous buck inductor (select nearest value)
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Output Capacitor (Cout)
361.2179487uF
Capacitance of your MPPT's output capacitor to achieve a ripple voltage less than or equal to Vripple (select any value above it)
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KINDLY DOWNLOAD THE EXCEL FILE THEN EDIT IT LOCALLY! I WON'T BE SENDING GOOGLE PERMISSIONS TO EDIT THIS FILE HERE
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