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

• VOUT Overvoltage Protection

• Over-Current Protection

PACKAGE

• TSSOP-28

DESCRIPTION

The SM72441 is a programmable MPPT controller

capable of controlling four PWM gate drive signals for

a 4-switch buck-boost converter. Along with SM72295

(Photovoltaic Full Bridge Driver) it creates a solution

for an MPPT configured DC-DC converter with

efficiencies up to 98.5%. Integrated into the chip is an

8-channel, 12 bit A/D converter used to sense input

and output voltage and current, as well as board

configuration. Externally programmable values

include maximum output voltage and current as well

as different settings on slew rate, and soft-start.