SM72445

ACTIVE

Programmable Maximum Power Point Tracking Controller with Adjustable PWM Frequency

Product details

Vin (min) (V) 4.75 Vin (max) (V) 5.25 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Features Synchronous Rectification Iq (typ) (µA) 11500
Vin (min) (V) 4.75 Vin (max) (V) 5.25 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Features Synchronous Rectification Iq (typ) (µA) 11500
TSSOP (PW) 28 62.08 mm² 9.7 x 6.4
  • Renewable Energy Grade
  • 110kHz,135kHz or 215kHz PWM operating frequency
  • Panel Mode pin for optional bypass switch control
  • Programmable maximum power point tracking
  • Photovoltaic solar panel voltage and current diagnostic
  • Single inductor four switch buck-boost converter control
  • I2C interface for communication
  • Output overvoltage protection
  • Over-current protection
  • Package
    • TSSOP-28

  • Renewable Energy Grade
  • 110kHz,135kHz or 215kHz PWM operating frequency
  • Panel Mode pin for optional bypass switch control
  • Programmable maximum power point tracking
  • Photovoltaic solar panel voltage and current diagnostic
  • Single inductor four switch buck-boost converter control
  • I2C interface for communication
  • Output overvoltage protection
  • Over-current protection
  • Package
    • TSSOP-28

The SM72445 is a programmable MPPT controller capable of controlling four PWM gate drive signals for a 4-switch buckboost converter. The SM72445 also features a proprietary algorithm called Panel Mode (PM) which allows for the panel to be connected directly to the output of the power optimizer circuit when the input to output voltage ratio is close to 1. This provides an opportunity to optimize the efficiency of the power optimizer when the load is naturally matching the maximum power point of the panel. Along with the SM72295 (Photovoltaic Full Bridge Driver), it creates a solution for an MPPT configured DC-DC converter with efficiencies up to 99.5% (when operating with dedicated PM switches). Integrated into the chip is an 8-channel, 10 bit A/D converter used to sense input and output voltages and currents, as well as IC configuration. Externally programmable values include maximum output voltage and current as well as different settings for slew rate, soft-start and Panel Mode.

The SM72445 is a programmable MPPT controller capable of controlling four PWM gate drive signals for a 4-switch buckboost converter. The SM72445 also features a proprietary algorithm called Panel Mode (PM) which allows for the panel to be connected directly to the output of the power optimizer circuit when the input to output voltage ratio is close to 1. This provides an opportunity to optimize the efficiency of the power optimizer when the load is naturally matching the maximum power point of the panel. Along with the SM72295 (Photovoltaic Full Bridge Driver), it creates a solution for an MPPT configured DC-DC converter with efficiencies up to 99.5% (when operating with dedicated PM switches). Integrated into the chip is an 8-channel, 10 bit A/D converter used to sense input and output voltages and currents, as well as IC configuration. Externally programmable values include maximum output voltage and current as well as different settings for slew rate, soft-start and Panel Mode.

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* Data sheet Prog Max Pwr Point Tracking Cntrl w/ Adjustable PWM Frequency datasheet 07 Mar 2012
User guide AN-2241 SM72445 Evaluation Board (Rev. A) 03 May 2013

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TSSOP (PW) 28 Ultra Librarian

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