Texas Instruments
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
BQ25570RGRR
詳細を表示 DataSheets

BQ25570RGRR

Product Overview

The BQ25570RGRR belongs to the category of energy harvesting power management integrated circuits (PMICs). It is designed for use in low-power applications where energy harvesting from ambient sources such as solar, thermal, or vibration is utilized. The BQ25570RGRR is characterized by its ultra-low quiescent current, efficient energy harvesting, and compact package size. It is available in a small 24-pin VQFN package and is essential for enabling self-sustaining, low-power systems. The packaging quantity typically includes one unit per package.

Specifications

  • Input Voltage Range: 80mV to 18V
  • Maximum Boost Converter Output Voltage: 5.2V
  • Ultra-Low Quiescent Current: 330nA
  • Integrated Battery Management with Overvoltage Protection
  • Maximum Power Point Tracking (MPPT) for Energy Harvesting

Detailed Pin Configuration

The BQ25570RGRR features a detailed pin configuration with 24 pins, including input/output pins, power management pins, and communication interface pins. The pinout diagram provides a clear understanding of the connectivity and functionality of each pin.

Functional Features

  • Efficient Energy Harvesting: The BQ25570RGRR is capable of efficiently harvesting energy from low-voltage ambient sources, making it suitable for energy-constrained applications.
  • Integrated Battery Management: With built-in overvoltage protection and battery management features, the PMIC ensures safe and reliable operation of the connected energy storage elements.
  • Maximum Power Point Tracking: The MPPT capability optimizes energy extraction from the ambient source, maximizing the overall system efficiency.

Advantages and Disadvantages

Advantages

  • Ultra-Low Quiescent Current: The PMIC's extremely low standby power consumption enables prolonged operation in energy-limited scenarios.
  • Compact Package Size: The small form factor allows for integration into space-constrained designs, facilitating portable and wearable applications.

Disadvantages

  • Limited Maximum Boost Converter Output Voltage: The maximum output voltage may not be sufficient for certain high-power applications, requiring additional voltage regulation circuitry.

Working Principles

The BQ25570RGRR operates by continuously monitoring the input energy source and efficiently transferring harvested energy to the load or energy storage element. It utilizes MPPT algorithms to track the maximum power point of the input source, ensuring optimal energy extraction. The integrated boost converter and battery management functions enable seamless power delivery and energy storage management.

Detailed Application Field Plans

The BQ25570RGRR is well-suited for a wide range of low-power and energy-harvesting applications, including: - Wireless Sensor Networks - Wearable Electronics - IoT Devices - Energy Harvesting Systems - Portable Medical Devices

Detailed and Complete Alternative Models

  • BQ25504: Similar energy harvesting PMIC with lower input voltage range but comparable features.
  • BQ25505: Energy harvesting PMIC with integrated buck/boost converter for wider voltage range support.

In conclusion, the BQ25570RGRR offers an efficient and compact solution for energy harvesting and power management in low-power applications, making it an essential component for self-sustaining systems in various fields.

Word Count: 491

技術ソリューションにおける BQ25570RGRR の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the BQ25570RGRR?

    • The BQ25570RGRR is an integrated energy harvesting power management IC designed for ultra-low power applications.

  2. What are the key features of the BQ25570RGRR?

    • The key features include cold-start voltage as low as 330 mV, quiescent current of 330 nA, and integrated boost converter.

  3. How does the BQ25570RGRR help in energy harvesting applications?

    • It efficiently manages and stores energy from sources such as solar or thermal to power ultra-low power systems.

  4. What are the typical applications of the BQ25570RGRR?

    • Typical applications include wireless sensor nodes, wearables, and other IoT devices that require energy harvesting.

  5. What is the maximum output voltage of the BQ25570RGRR?

    • The maximum output voltage is programmable up to 5.5 V.

  6. Does the BQ25570RGRR have built-in protection features?

    • Yes, it includes features such as overvoltage protection, undervoltage lockout, and overcurrent protection.

  7. Can the BQ25570RGRR operate with intermittent energy sources?

    • Yes, it is designed to efficiently operate with intermittent energy sources, making it suitable for energy harvesting applications.

  8. What is the efficiency of the BQ25570RGRR's boost converter?

    • The boost converter has a high efficiency of up to 90% to maximize energy extraction from the harvester source.

  9. Is the BQ25570RGRR suitable for low-power and batteryless designs?

    • Yes, it is ideal for low-power and batteryless designs due to its ultra-low quiescent current and energy harvesting capabilities.

  10. Are there any design considerations when using the BQ25570RGRR in technical solutions?

    • Designers should consider input voltage range, load requirements, and energy source characteristics to optimize the performance of the BQ25570RGRR in their specific application.