STMicroelectronics STEVAL-IHP002V1

Overview

STEVAL-IHP002V1 from STMicroelectronics is a PLM-based SmartPlug demonstration board built around the STM32F103CBT6 MCU, ST7540 power-line modem, and STPM01 energy metering IC. It enables real-time AC load monitoring (current, power, energy), on/off or phase-control dimming, and CENELEC Band C-compliant communication via RS232 configuration - deployed in residential energy management subsystems.

For engineers reviewing the STEVAL-IHP002V1 datasheet, STEVAL-IHP002V1 pinout, STEVAL-IHP002V1 application, or STEVAL-IHP002V1 equivalent, key selection considerations include PLM network topology support (CSMA/CA + ACK), isolated UART interface for PC commissioning, triac/dimmer-switch output stage, and dual-rail power supply architecture (12 V / 3.3 V) with RoHS compliance.

Technical Context

The board implements a full PLM protocol stack: PHY layer with forward error correction (FEC), MAC layer supporting CSMA/CA and frame acknowledgment, and static-addressed network layer with routing capability. It operates in the CENELEC Band C (100–148.5 kHz) using analog front-end components including current transformer T1 and bandpass filtering centered at 132 kHz.

Energy measurement is performed by the STPM01 via SPI interface, sampling voltage and current inputs with dedicated calibration registers (SYN, SDA, SCLK, SCS). The STM32F103CBT6 handles system control, ZCR detection, TRIAC firing timing, and RS232-to-PLM bridging through configurable GPIOs and timers (TIM3_CH3/CH4).

Key Specifications

Availability

STEVAL-IHP002V1 is available at Aetrix Electronics and suitable for smart grid node development, residential energy monitoring systems, and PLM-based building automation subsystems requiring stable component supply and reference design validation.

Supply support for STEVAL-IHP002V1 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, Switzerland, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series - purpose-built reference platforms that demonstrate system-level integration of ST's MCUs, power-line modems, and metrology ICs for energy-aware smart infrastructure.

FAQ

What communication protocols does STEVAL-IHP002V1 support?

STEVAL-IHP002V1 supports CENELEC Band C power-line communication using the ST7540 PLM IC with a full protocol stack (PHY/FEC, MAC/CSMA-CA+ACK, network/static addressing). It also features isolated RS232 for local configuration and debugging via DB9 connector, but does not support Wi-Fi, Zigbee, or Bluetooth.

Can STEVAL-IHP002V1 operate as a standalone energy monitor without a concentrator?

No - it functions exclusively as a PLM network node. Energy data is transmitted over the power line to a concentrator like STEVAL-IHP003V1, which aggregates multiple SmartPlugs and interfaces with a PC. There is no onboard display, local storage, or Ethernet/Wi-Fi connectivity for autonomous operation.

What load types and ratings are supported by the output stage?

The board supports resistive and inductive AC loads up to 16 A / 230 VAC. It integrates both a T2035H triac for phase-control dimming and an RTD14-SPDT relay for on/off switching. The triac path includes zero-crossing detection (ZCR) and snubber circuitry (R102, C116) for EMI suppression and safe commutation.

Is calibration required before deployment, and how is it performed?

Yes - the STPM01 energy meter requires per-unit calibration using the J6 CAL CON header (10-pin). Calibration adjusts gain/offset for voltage and current channels via SPI commands sent from the STM32. Reference values (e.g., R94 = 2 MΩ for voltage scaling, R96/R97 = 261 kΩ for current shunt) are populated on-board and documented in Figure 6 of the schematic.