DFM8001 Indoor Ambient Energy Harvesting Kit

DFM8001 Indoor Ambient Energy Harvesting Kit Technical Information

Overview

The DFM8001 Indoor Ambient Energy Harvesting Kit is a power management and energy harvesting system designed to collect very low ambient energy from the environment and convert it into usable electrical power.

• Harvests energy from:

  • Indoor light

  • Thermal gradients

  • Mechanical vibrations

  • Radio frequency (RF) signals

   

• Designed for:

  • Ultra-low power electronics

   

It enables battery-less or extended-life IoT systems.

Working Principle

Ambient Energy Harvesting Concept

• Captures small energy sources (W leverts them into electrical energy

• Stores energy for later use

Energy Flow Process

1. Energy Capture

• Input sources:

  • Photovoltaic (light)

  • Thermal or RF inputs

2. Energy Conversion & Optimization

• Uses Maximum Power Point Tracking (MPPT)

• Continuously adjusts operating point for maximum efficiency

3. Energy Storage

• Stores energy in:

  • Supercapacitors or rechargeable storage

4. Regulated Output

• Provides stable voltage output for electronics

Converts unstable, weak energy stable usable power.

Core Features

Multi-Source Energy Harvesting

• Supports:

  <

Ultra-Low Power Operation

• Works with microwatt-level input energy

Dynamic MPPT

• Adjustable MPPT ratios:

  • 70%, 75%, 85%, 90%

Integrated Power Management

• Includes:

  • Charge control

  • Discharge control

  • Energy storage management

Dual Voltage Outputs

• Low voltage:

  • 1.2V 1.8V (~20 mA)

• High voltage:

  • 1.8V 4.1V (~80 mA)

Electrical Characteristics

• Operating voltage: 3.3V 5.5V

• Input voltage range: 150 mV 5V

Cold Start Behavior

• Cold start condition:

  • After startup:

    • Can operate at ~150 mV input

  Energy Storage System

  Supported Storage Types

  • Supercapacitors

  • Rechargeable batteries

  Protection Features

  • Overcharge protection: 2.7V 4.5V

  • Over-discharge protection: 2.2V 3.6V

  Additional Features

  • Low battery warning

  • Backup battery support

  Photovoltaic (Light Energy) Module

  • Type: Amorphous silicon panel

  • Optimized for indoor lighting conditions

  Performance

  • Maximum power:

    • ~90 W @ 200 lux

  Works efficiently even under low indoor light.

  Internal Comg IC

• Evaluation board

• Supercapacitor modules (0.22F & 1.5F)

• Indoor photovoltaic panel

Complete system for energy harvesting + storage + regulation.

Operating Behavior

Continuous Energy Collection

• Constantly collects energy from environment

Adaptive Efficiency

• MPPT dynamically adjusts to changing input conditions

Energy Buffering

• Stores energy until sufficient for powering load

Intermittent Power Delivery

• Suitable for:

  • Low-duty-cycle devices

  • Periodic sensing systems

Application Characteristics

• Works best in:

  • Indoor environments

  • Low-light conditions