Analog Devices / Maxim Integrated MAX20801 Cell-String Optimizers

Analog Devices MAX20801 Cell-String Optimizer enables cell-string Maximum Power Point Tracking (MPPT), providing superior photovoltaic (PV) module energy harvest. These devices are also more reliable than standard panels and those incorporating module-level MPPT technologies. Photovoltaic cells can only deliver maximum power under specific electrical conditions that vary significantly with exposed irradiance and temperature. Series connections of PV cells create a significant sensitivity to cell mismatch, resulting in less than optimal power and energy production under real-world conditions. The MAX20801 Cell-String Optimizer enables a string of PV cells to deliver a collective maximum power into a wide range of load conditions. This enhanced electrical flexibility eliminates power loss from a mismatch in PV strings and arrays, improving energy production and system design flexibility.

Features

  • Performs MPPT on 20-24 series connected PV cells
  • Fast MPPT reacts quickly to changing conditions
  • Integrated voltage-limiting clamps output voltage
  • Integrated current-limiting clamps output current
  • Active bypass function eliminates diodes and HotSpots
  • Supports panel flash and electroluminescence (EL) testing
  • Peak 99.1%, CEC 98.7% and Euro 98.3% efficiency

Application Circuit

Application Circuit Diagram - Analog Devices / Maxim Integrated MAX20801 Cell-String Optimizers
Inilathala: 2019-07-12 | Na-update: 2025-08-22