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This paper presents the design and implementation of a Maximum Power Point Tracking (MPPT) controller for a 5 V, 1 W solar panel using an ATtiny24 microcontroller. A buck converter, controlled via PWM, adjusts the panel operating point to maximize power extraction. Voltage and current readings were taken using an analog setup. The microcontroller averages several ADC samples to get stable values. The perturb-and-observe method was used to control the PWM duty cycle up or down to improve the output power. The output power measured at the load was 900 mW. These results confirmed that the circuit was able to track the maximum power point under varying light conditions.

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Design and Implementation of Low Power Maximum Power Point Tracking Circuit for Portable Applications

  • 会议论文

  • 发表日期：

    2026年

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  • Hasan Berjawi,
  • Ali Ibrahim,
  • Adnan Harb,
  • Ammar Saad,
  • Zeinab Hijazi

摘要

This paper presents the design and implementation of a Maximum Power Point Tracking (MPPT) controller for a 5 V, 1 W solar panel using an ATtiny24 microcontroller. A buck converter, controlled via PWM, adjusts the panel operating point to maximize power extraction. Voltage and current readings were taken using an analog setup. The microcontroller averages several ADC samples to get stable values. The perturb-and-observe method was used to control the PWM duty cycle up or down to improve the output power. The output power measured at the load was 900 mW. These results confirmed that the circuit was able to track the maximum power point under varying light conditions.