STPMC1BTR

Overview

The STPMC1BTR is a fully integrated energy calculator IC designed for effective energy measurement in power line systems. It functions as an application-specific standard product (ASSP) that computes cumulative active and reactive wide-band and fundamental harmonic energies. The device supports 1-, 2-, or 3-phase WYE and Delta services with 2 to 4 wires. It processes voltage and current information via five input data pins, accepting multiplexed delta-sigma signals from companion sensor ICs like the STPMSx series. Internal hard-wired DSP units perform real-time computations on these streams using exclusive ripple-free algorithms. Configuration and calibration data are accessible through an SPI port and can be stored in a 112-bit OTP block.

Feature Summary

• Integrates four internal hard-wired digital signal processing units for real-time computation of energy parameters.
• Supports multiple phase configurations including 1-, 2-, and 3-phase WYE and Delta services.
• Features an exclusive ripple-free energy calculation algorithm for high precision.
• Includes a programmable pulsed output for direct drive applications.

Applications

• Multi-function energy meters coupled with microprocessors
• Simple active energy meters driving stepper motors directly
• Smart metering systems utilizing Rogowski coils, current transformers, shunts, or Hall sensors

Procurement Notes

Verify the specific suffix 'BTR' against the official STMicroelectronics datasheet to confirm tape-and-reel packaging and temperature grade. Ensure compatibility with the intended sensor interface, such as the STPMSx series, for proper signal integration. Confirm that the 112-bit OTP programming requirements align with your manufacturing calibration process.

Selection Notes

Select this component when designing poly-phase energy meters requiring high-precision computation without external DSP resources. It is suitable for applications needing support for various current sensing technologies including Rogowski coils and Hall sensors. Consider the SPI interface for configuration if dynamic calibration is required, or utilize the OTP memory for fixed calibration data storage.

Part Context

The STPMC1 belongs to STMicroelectronics' family of energy measurement solutions, often used in conjunction with smart sensor devices like the STPMS1. While the STPMS1 handles analog front-end conditioning and modulation, the STPMC1 performs the complex digital arithmetic required for accurate energy billing and monitoring in utility-grade metering applications.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify pinout and software compatibility if considering alternative energy calculators from other manufacturers.

FAQ

What types of current sensors does the STPMC1 support?

The STPMC1 supports Rogowski coils, current transformers, shunts, and Hall current sensors.

How is the configuration and calibration data managed?

Data is accessible via an SPI port and can be saved in a 112-bit OTP block or set dynamically in microprocessor-based meters.