1FEATURES
2• Renewable Energy Grade
• Programmable Maximum Power Point Tracking
• Photovoltaic Solar Panel Voltage and Current
Diagnostic
• Single Inductor Four Switch Buck-Boost
Converter Control
• I2C Interface for Communication
• VOUT Overvoltage Protection
• Over-Current Protection
• Package: TSSOP-28

DESCRIPTION
The SM72442 is a programmable MPPT controller
capable of controlling four PWM gate drive signals for
a 4-switch buck-boost converter. The SM72442 also
features a proprietary algorithm called Panel Mode
which allows for the panel to be connected directly to
the output of your power optimizer circuit. 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%. Integrated
into the chip is an 8-channel, 12 bit A/D converter
used to sense input and output voltages and currents,
as well as board configuration. Externally
programmable values include maximum output
voltage and current as well as different settings
forslew rate, soft-start and Panel Mode.