STMicroelectronics EVALKITST7570-1

Overview

EVALKITST7570-1 from STMicroelectronics is a complete evaluation platform for the ST7570 S-FSK power line communication system-on-chip, designed to demonstrate compliant EN50065-1 A-band (63.3/74 kHz) transmission and reception on AC mains. It integrates line coupling, zero-crossing detection, UART interface, JTAG debug, and 8–18 V wide-input power supply - enabling direct in-field PLC performance validation for automated meter reading (AMR) systems.

For engineers reviewing the EVALKITST7570-1 datasheet, EVALKITST7570-1 pinout, EVALKITST7570-1 application, or EVALKITST7570-1 equivalent, this kit supports full PHY/MAC layer testing per IEC61334-5-1, real-time BER vs. SNR analysis, conducted emissions verification (3 kHz–30 MHz), and noise immunity validation under AWGN/NBI conditions.

Technical Context

The EVALKITST7570-1 implements a non-isolated line coupling architecture with active TX filter (19 kHz -20 dB bandwidth at 2400 BAUD) and passive RX filter (50 kHz -3 dB bandwidth), optimized for CENELEC A-band compliance. It features zero-crossing input (ZC_IN_A) with <1 µs jitter over 85–265 V_AC, 50/60 Hz mains, and supports up to 1 A_rms PA output current with programmable TX_GAIN (1–31 steps).

Thermal design includes dual-layer copper dissipation areas and a measured 50 °C/W junction-to-ambient thermal resistance on its 2-layer PCB. The board interfaces directly with the ST7570 QFN48 package via dedicated reset, UART, JTAG, and external microcontroller headers (J1), enabling full firmware loading, packet fragmentation testing, and RSSI estimation at 1200/2400 bps.

Key Specifications

Availability

EVALKITST7570-1 is available at Aetrix Electronics and suitable for automated meter reading (AMR), smart grid node validation, EN50065-1 compliance testing, and IEC61334-5-1 protocol development requiring stable component supply and full reference hardware traceability.

Supply support for EVALKITST7570-1 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 management devices, and embedded solutions for industrial, automotive, and smart infrastructure markets.

The EVALKITST7570-1 belongs to ST's Power Line Communication (PLC) evaluation platform family, developed specifically to accelerate deployment of narrowband S-FSK-based AMR and smart grid communication systems compliant with European and international standards.

FAQ

What is the required external power supply for EVALKITST7570-1?

The board operates directly from 85–265 V_AC, 50/60 Hz mains via CN1 (line/neutral). An external ALTAIR04-900 PSU is recommended for lab-safe isolated AC supply. No DC adapter is used - onboard circuitry generates regulated 8–18 V VCC and 3.3 V VDDIO for the ST7570 and peripherals.

Does EVALKITST7570-1 support both transmission and reception testing simultaneously?

Yes - the board supports full-duplex evaluation using two units: one configured as transmitter, the other as receiver. Its line coupling section enables concurrent TX/RX operation on shared mains wiring, with independent active TX filtering and passive RX filtering paths verified per EN50065-1 spectral masks.

Can EVALKITST7570-1 be used for CENELEC B-band evaluation?

No - the board's filters and firmware are tuned exclusively for EN50065-1 A-band (63.3/74 kHz). While the ST7570 SoC supports B-band operation in firmware, the EVALKITST7570-1 hardware lacks the necessary filter reconfiguration and has no documented B-band validation data or calibration in AN3213.

Is isolation provided between mains and logic circuits on EVALKITST7570-1?

No - the board uses non-isolated coupling. CN1 connects directly to high-voltage mains, and zero-crossing detection (ZC_IN_A) is referenced to live AC. ST explicitly warns that no protection against accidental human contact exists, and mandates use of an isolation transformer during probing or instrumentation.