SM72442

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Programmable Maximum Power Point Tracking Controller for Photovoltaic Solar Panels

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Product details

Parameters

Topology Buck-Boost Vin (Min) (V) 4.75 Vin (Max) (V) 5.25 Switching frequency (Min) (kHz) 220 Switching frequency (Max) (kHz) 220 Features Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Buck-boost & inverting controllers (external switch)

Package | Pins | Size

TSSOP (PW) 28 62 mm² 9.7 x 6.4 open-in-new Find other Buck-boost & inverting controllers (external switch)

Features

  • 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

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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.

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Technical documentation

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Type Title Date
* Datasheet SM72442 Prog MaxPwr Point Tracking Cont for Photovoltaic Solar Panels datasheet (Rev. H) Apr. 01, 2013
Technical articles Four-switch buck-boost layout tip No. 4: routing gate-drive and return paths Feb. 20, 2019
Technical articles Making smart energy smarter with renewable power storage Apr. 22, 2015
Application notes AN-2122 SM3320-RF-EV Reference Design (Rev. E) May 06, 2013
Application notes AN-2124 Power Circuit Design For SolarMagic SM3320 (Rev. C) May 06, 2013
Application notes SM3320-BATT-EV Charge Controller Reference Design (Rev. C) May 06, 2013
Application notes Introduction to Photovoltaic Systems Maximum Power Point Tracking Dec. 29, 2010

Design & development

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Design tools & simulation

CAD/CAE SYMBOLS Download
SNVC031.ZIP (11637 KB)
CAD/CAE SYMBOLS Download
SNVC033.ZIP (3984 KB)

Reference designs

REFERENCE DESIGNS Download
SM3320-BATT-EV Charge Controller Reference Design
SM3320-BATT-EV The SM72442 MPPT digital controller and SM72295 photovoltaic full bridge drivers are designed to control high efficiency DC/DC conversion used in photovoltaic applications. This application note will detail the usage of those devices in a battery charging application. The reference design is meant (...)

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 28 View options

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