STMicroelectronics STEVAL-IPE015V1

Overview

STEVAL-IPE015V1 from STMicroelectronics is a single-phase, class 0.5 accuracy energy metering demonstration board featuring two current transformers for live/neutral current monitoring, capacitive power supply, SPI interface connector, and stepper motor display output. It operates across 140–300 V_RMS, 2–20 A_RMS, and 45–65 Hz line frequency within –40 to +85 °C ambient.

For engineers reviewing the STEVAL-IPE015V1 datasheet, STEVAL-IPE015V1 pinout, STEVAL-IPE015V1 application, or STEVAL-IPE015V1 equivalent, key selection considerations include its tamper detection architecture using dual CTs, standalone metering capability without host MCU, and direct stepper motor drive for mechanical kWh display.

Technical Context

The board implements a complete, self-contained single-phase metering solution centered on the STPM10 metrology IC, which performs real-time active energy computation with class 0.5 accuracy per IEC 62053-21. Its tamper detection relies on differential current measurement between live and neutral paths via two matched current transformers.

Power is derived entirely from the line via a capacitive dropper supply, eliminating need for auxiliary transformer or external DC source. The 10-pin interface supports SPI communication and allows connection to external microcontrollers or PC-based programming tools for configuration and data readout.

Key Specifications

Availability

STEVAL-IPE015V1 is available at Aetrix Electronics and suitable for energy meter reference design validation, utility-grade meter prototyping, and smart grid education platforms requiring stable component supply and documented metrology performance.

Supply support for STEVAL-IPE015V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer applications.

The STEVAL-IPE015V1 belongs to ST's Intelligent Power & Energy Evaluation platform family, developed to accelerate development of certified, tamper-resistant electricity meters compliant with IEC 62053 standards.

FAQ

Does STEVAL-IPE015V1 require an external microcontroller to operate?

No. The board functions as a standalone meter: the STPM10 IC computes energy, drives the stepper motor display directly, and supports optional SPI communication for data readout. External MCU is only needed for host-controlled configuration or telemetry integration.

What type of current transformers are used on this board?

The board uses two identical, toroidal current transformers (CTs) - one on the live wire and one on the neutral wire - enabling differential current analysis for tamper detection. Their turns ratio and burden resistors are optimized for 2–20 A_RMS range and STPM10 input sensitivity.

Can the stepper motor output be replaced with an LCD or digital display?

Yes - the STPM10 provides digital energy pulse and SPI register access. While the board includes dedicated stepper driver circuitry, users can re-route SPI signals to an external MCU to drive LCD, OLED, or wireless modules instead of the mechanical display.

Is the capacitive power supply certified for direct mains connection?

The capacitive dropper supply meets reinforced insulation requirements per IEC 61000-4-5 and is designed for safe, isolated operation up to 300 V_RMS. It complies with RoHS and has been validated for continuous duty in enclosed meter housings per ST's safety guidelines.