The BL0952 is a power metering IC manufactured by Shanghai Belling Co., Ltd. It's designed for measuring active power, reactive power, voltage RMS, and current RMS in single-phase applications. The IC utilizes a high-precision Sigma-Delta ADC and advanced digital signal processing to achieve accurate measurements.

Applications:

• Smart Plugs
• Smart Meters
• Power Monitoring Devices
• Energy Management Systems
• Home Appliances (e.g., Washing Machines, Refrigerators)
• Power Strips with Energy Monitoring

Features:

• Single-Phase Power Metering IC
• Measures Active Power, Reactive Power, Voltage RMS, and Current RMS
• High-Precision Sigma-Delta ADC
• Integrated Temperature Sensor
• Overcurrent Detection
• Voltage Sag Detection
• UART Communication Interface
• SPI Communication Interface
• Energy Pulse Output

Benefits:

• Accurate Power Measurement: Provides precise measurements of various power parameters.
• Comprehensive Monitoring: Monitors voltage, current, and temperature for enhanced system protection.
• Communication Interfaces: UART and SPI interfaces enable easy integration with microcontrollers.
• Energy Pulse Output: Simplifies interfacing with energy monitoring systems.
• Compact Design: Reduces the overall size of the power monitoring solution.
• Improved Energy Efficiency: Facilitates the development of energy-efficient devices.

Additional Details:

The BL0952 typically requires an external shunt resistor for current measurement and a resistor divider network for voltage measurement. The IC provides various registers for accessing measurement data and configuring its operation. It also includes an integrated temperature sensor for temperature compensation. The UART and SPI interfaces allow the microcontroller to read the measurement data and configure the IC. Overcurrent and voltage sag detection features enhance system safety by protecting against abnormal conditions. This IC is designed for applications that require accurate power measurement and comprehensive monitoring of power parameters. The datasheet provides details about the register map, communication protocols, and application circuits.

Given its END-OF-LIFE status, finding replacements or using existing stock is crucial for ongoing projects. The BL0952 provided accurate power measurement and its various safety features ensured reliable operation in power-sensitive environments. Replacement options with similar functionality should be carefully considered.