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.