Npm Fuel Gauge Board

Overview

The nPM Fuel Gauge board (nPM-FG) by Nordic Semiconductor is a compact, high-efficiency power management solution designed for battery-powered IoT devices. It integrates advanced fuel gauge functionality with power conversion, enabling precise monitoring of battery state-of-charge (SoC), voltage, and current consumption. The board is optimized for low-power applications, supporting seamless integration with Nordic’s nRF91 Series and other embedded systems.

Key Features

• Accurate Fuel Gauge: Monitors battery SoC, voltage, and current with high precision for reliable power management.
• Wide Input Voltage Range: Supports 2.7 V to 5.5 V input, compatible with various battery chemistries.
• Low Quiescent Current: Minimizes power loss in idle or sleep modes, extending battery life.
• Integrated DC/DC Converter: High-efficiency buck-boost regulator ensures stable power delivery.
• I²C Interface: Enables communication with host MCUs for real-time battery data.
• Compact Form Factor: Small footprint ideal for space-constrained designs.

Technical Specifications

• Microcontroller Compatibility: Works with Arm Cortex-M33-based systems, including Nordic’s nRF91 Series.
• Battery Monitoring: Measures voltage (0–5 V), current (±3 A), and SoC with ±1% accuracy.
• Power Conversion: Buck-boost efficiency up to 95%.
• Operating Temperature: -40°C to +85°C for industrial environments.
• Protection Features: Overvoltage, undervoltage, and overcurrent safeguards.

Applications

The nPM-FG is designed for battery-dependent IoT and embedded systems, including:

• Wireless Sensor Networks: Long-term environmental or industrial monitoring.
• Asset Trackers: Real-time location and condition reporting.
• Wearables: Smartwatches, health monitors, and fitness devices.
• Smart Agriculture: Soil sensors and livestock tracking.
• Medical Devices: Portable diagnostics and patient monitoring.

By combining precise power monitoring with efficient conversion, the nPM Fuel Gauge board ensures optimal energy utilization for extended device operation.