موديول شاحن شمسي CN3791 بتقنية MPPT 12 فولت

CN3791 12V MPPT Solar Charger Module

The CN3791 is a specialized Maximum Power Point Tracking (MPPT) solar charger designed to efficiently manage the charging of a single-cell Li-ion or LiPo battery (3.7V nominal) using a 12V nominal solar panel. By utilizing a high-frequency 300kHz PWM buck converter, the module ensures that the solar panel operates at its peak efficiency, maximizing energy harvest even as sunlight intensity varies.

Key Features

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  MPPT Efficiency: The integrated CN3791 chip tracks the maximum power point by regulating the MPPT pin to 1.205V via a resistor divider, achieving efficiencies up to 98%.

  
  


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  Lithium Management: Features a sophisticated charging cycle including trickle charging for deeply discharged cells ($<2.8\text{V}$) at 17.5% current, and constant-voltage regulation at 4.2V.

  
  


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  Plug-and-Play Setup: Comes pre-installed with four 2-pin JST/PH2.0 connectors, allowing for simple, solderless connections between the solar panel and the battery.

  
  


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  Intelligent Protection: Includes battery over-voltage protection, under-voltage lockout to prevent reverse current when the sun is down, and a soft start function to reduce inrush current.

  
  


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  Status Indicators: Dedicated outputs for CHRG (charging) and DONE (complete) are typically wired to onboard LEDs for instant visual feedback.

  
  

Technical Specifications

Connection

Applications

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  Remote Sensing: Powering off-grid sensors and IoT gateways with a sustainable energy source.

  
  


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  Solar Power Banks: Building high-efficiency portable energy systems and garden lighting.

  
  


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  Robotics: Providing an autonomous charging solution for mobile platforms like your ATLAX robot when operating in outdoor warehouse environments.