MPPT DC-DC converters

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The embedded MPPT algorithm in these DC-DC converters maximizes the power generated by photovoltaic panels independently of temperature and the amount of solar irradiation.

The SPV1020 is an interleaved DC-DC boost converter operating in the voltage range from 6.5 V to 40 V. It embeds power MOSFETs for active switches and synchronous rectification, minimizing the number of external devices. The 4-phase interleaved topology also avoids the use of electrolytic capacitors, which would limit the lifetime.

The SPV1040 is a monolithic step-up converter with embedded MPPT algorithm that operates over a 0.3 V to 5.5 V input voltage range and maximizes the energy transfer to the load thanks to the very high efficiency. The very low start-up input voltage allows the device to be supplied by even just a few photovoltaic cells or fuel cells, and hence makes it suitable for portable applications.

Part NumberGeneral DescriptionInput Voltage(Vin) min (V)Input Voltage(Vin) max (V)Operating Temperature min (°C)Operating Temperature max (°C)Input duty cycle voltage min (V)Input duty cycle voltage max (V)Regulated Output Voltage min (V)Regulated Output Voltage max (V)Output Current-Max(I_OUT_MAX) nom (A)Regulator Switching frequency max ()Efficiency nom (%)Disable PinPower Good OutputDC/DC Converters FeaturesOscillator Switching frequency min (Hz)Oscillator Switching frequency max (Hz)
SPV1020Interleaved DC-DC boost converter with built-in MPPT algorithm6.545-401256.54510456-98NoNoSoft Start;Synchronous Rectifier;Thermal shut down;Under voltage lock out--
SPV1040High efficiency solar battery charger with embedded MPPT0.35.5-401250.35.525.21-90Yes----
SPV1050Ultra low power energy harvester and battery charger with embedded MPPT and LDOs0.188-40850.1882.55.30.07100000090No----