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See Technical Specifications

SM72445MT/NOPB

SolarMagic™ Controller, Photovoltaic Solar Panels Voltage Regulator IC 1 Output 28-TSSOP

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

SM72445MT/NOPB
Datasheet:

SM72445MT/NOPB Datasheet (PDF)
Topology:

Buck-Boost
Vin (min) (V):

4.75
Vin (max) (V):

5.25
Switching frequency (min) (kHz):

215
EDA/CAD Models:

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SM72445MT/NOPB General Description

The SM72445 is a programmable MPPT controller capable of controlling four PWM gate drive signals for a 4-switch buckboost converter. The SM72445 also features a proprietary algorithm called Panel Mode (PM) which allows for the panel to be connected directly to the output of the power optimizer circuit when the input to output voltage ratio is close to 1. This provides an opportunity to optimize the efficiency of the power optimizer when the load is naturally matching the maximum power point of the panel. 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% (when operating with dedicated PM switches). Integrated into the chip is an 8-channel, 10 bit A/D converter used to sense input and output voltages and currents, as well as IC configuration. Externally programmable values include maximum output voltage and current as well as different settings for slew rate, soft-start and Panel Mode.

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Key Features

Renewable Energy Grade
110kHz,135kHz or 215kHz PWM operating frequency
Panel Mode pin for optional bypass switch control
Programmable maximum power point tracking
Photovoltaic solar panel voltage and current diagnostic
Single inductor four switch buck-boost converter control
I2C interface for communication
Output overvoltage protection
Over-current protection
Package
- TSSOP-28

Specifications

Topology	Buck-Boost	Vin (min) (V)	4.75
Vin (max) (V)	5.25	Switching frequency (min) (kHz)	215
Switching frequency (max) (kHz)	215	Iq (typ) (mA)	11.5
Features	Synchronous Rectification	Operating temperature range (°C)	-40 to 125
Rating	Catalog	Type	Controller
Pin Count	28	Released Date	Nov 16, 2017
Last Modified Date	Mar 7, 2023 4:10 PM UTC