SM72445 Series

Programmable Maximum Power Point Tracking Controller with Adjustable PWM Frequency

Catalog

Programmable Maximum Power Point Tracking Controller with Adjustable PWM Frequency

Part	Applications	Package / Case	Package / Case	Package / Case [y]	Number of Outputs	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Voltage - Input [Min]	Voltage - Input [Max]
Texas Instruments SM72445MT/NOPB	Controller Photovoltaic Solar Panels	28-TSSOP	0.173 in	4.4 mm	1	Surface Mount	-40 °C	105 ░C	28-TSSOP	4.75 V	5.25 V
Texas Instruments SM72445MTX/NOPB	Controller Photovoltaic Solar Panels	28-TSSOP	0.173 in	4.4 mm	1	Surface Mount	-40 °C	105 ░C	28-TSSOP	4.75 V	5.25 V
Texas Instruments SM72445MTE/NOPB	Controller Photovoltaic Solar Panels	28-TSSOP	0.173 in	4.4 mm	1	Surface Mount	-40 °C	105 ░C	28-TSSOP	4.75 V	5.25 V

Catalog

Programmable Maximum Power Point Tracking Controller with Adjustable PWM Frequency

Key Features

• Renewable Energy Grade110kHz,135kHz or 215kHz PWM operating frequencyPanel Mode pin for optional bypass switch controlProgrammable maximum power point trackingPhotovoltaic solar panel voltage and current diagnosticSingle inductor four switch buck-boost converter controlI2C interface for communicationOutput overvoltage protectionOver-current protectionPackageTSSOP-28Renewable Energy Grade110kHz,135kHz or 215kHz PWM operating frequencyPanel Mode pin for optional bypass switch controlProgrammable maximum power point trackingPhotovoltaic solar panel voltage and current diagnosticSingle inductor four switch buck-boost converter controlI2C interface for communicationOutput overvoltage protectionOver-current protectionPackageTSSOP-28

Description

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.