ADC

ADC

CONTROLLER

MPPT CONTROLLER

I2C

AIN0

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

AIN7

CS_N

SCLK

DIN

DOUT

Vin

Iin

Vout

Iout

CLK GEN

D0

D1

D2

D3

D4

D5

D6

D7

SDA

SCL

LIA

HIA

LIB

HIB

ADC_C

VDDA

VSSA

VDDD

VSSD

AVIN

AIIN

AVOUT

AIOUT

A0

A2

A4

A6

I2C0

I2C1

I2C2

SM72442

www.ti.com

SNVS689H – OCTOBER 2010 – REVISED APRIL 2013

Programmable Maximum Power Point Tracking Controller for Photovoltaic Solar Panels

Check for Samples: SM72442

1

FEATURES

DESCRIPTION

The SM72442 is a programmable MPPT controller

2

•

Renewable Energy Grade

capable of controlling four PWM gate drive signals for

•

Programmable Maximum Power Point Tracking

a 4-switch buck-boost converter. The SM72442 also

•

Photovoltaic Solar Panel Voltage and Current

features a proprietary algorithm called Panel Mode

Diagnostic

which allows for the panel to be connected directly to

the output of your power optimizer circuit. Along with

•

Single Inductor Four Switch Buck-Boost

the SM72295 (Photovoltaic Full Bridge Driver), it

Converter Control

creates a solution for an MPPT configured DC-DC

•

I2C Interface for Communication

converter with efficiencies up to 99.5%. Integrated

•

VOUT Overvoltage Protection

into the chip is an 8-channel, 12 bit A/D converter

used to sense input and output voltages and currents,

•

Over-Current Protection

as

well

as

board

configuration.

Externally

•

Package: TSSOP-28

programmable

values

include

maximum

output

voltage and current as well as different settings

forslew rate, soft-start and Panel Mode.

Block Diagram

Figure 1. Block Diagram

1

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2010–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.