STMicroelectronics STEVAL-ILL015V3

Overview

STEVAL-ILL015V3 from STMicroelectronics is an evaluation board for the LED2472G 24-bit constant-current RGB LED sink driver, featuring two TQFP48 LED2472G ICs driving 48 total LEDs (3×16 RGB), STM32F103Cx microcontroller, ST1S10 DC-DC converter (7.5–18 V input, 0.7 A), and diagnostic jumpers for LED open/short simulation. It supports lab evaluation of high-brightness LED panel control with real-time error and overtemperature flagging.

For engineers reviewing the STEVAL-ILL015V3 datasheet, STEVAL-ILL015V3 pinout, STEVAL-ILL015V3 application, or STEVAL-ILL015V3 equivalent, this board enables rapid validation of LED2472G-based RGB display systems, firmware development via JTAG/USB, and hardware-level diagnostics including per-channel fault injection and thermal monitoring under variable input voltage conditions.

Technical Context

The board implements a dual-LED2472G architecture with independent SDI/SDO daisy-chaining, 24-bit PWM dimming resolution per RGB channel, and integrated current-sink output error detection. Each LED2472G provides 24 constant-current sinks (8 red, 8 green, 8 blue) with programmable ISET reference and ROE/GOE/BOE enable control.

System-level timing is managed by the STM32F103Cx's internal high-speed RC oscillator and configurable SPI interface to the LED drivers; power delivery uses the ST1S10 synchronous buck regulator (3.3 V output, up to 1.5 A) with SYNC pin support for external clock synchronization and FB voltage feedback precision of ±2%.

Key Specifications

Availability

STEVAL-ILL015V3 is available at Aetrix Electronics and suitable for LED display prototyping, RGB panel validation, and embedded lighting controller development requiring stable component supply, full documentation access, and manufacturer-supported reference design fidelity.

Supply support for STEVAL-ILL015V3 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 microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer applications.

This evaluation board belongs to ST's STEVAL lighting evaluation platform family, engineered specifically to accelerate adoption of their LED driver portfolio in large-area RGB displays and cost-sensitive full-color signage systems.

FAQ

What is the primary function of the STEVAL-ILL015V3?

The STEVAL-ILL015V3 is a fully assembled evaluation board designed to demonstrate and validate the LED2472G 24-bit constant-current RGB LED driver. It integrates two LED2472G ICs, an STM32F103Cx microcontroller, ST1S10 DC-DC converter, and physical controls to enable rapid testing of high-resolution LED panel drive, fault diagnostics, and firmware development.

Does the board support external clock synchronization for the LED drivers?

No - the LED2472G devices on this board use internally generated clocks; however, the ST1S10 DC-DC converter includes a SYNC pin that accepts external clock signals (up to 2 MHz) for EMI reduction. The LED2472G's CLK input is driven by the STM32's GPIO-timed SPI clock, not a free-running oscillator.

Can the STEVAL-ILL015V3 be used with custom firmware beyond the provided GUI?

Yes - the board exposes SWD/JTAG pins (PA13/PA14) and supports standard ARM CMSIS-DAP toolchains. Users can flash custom binaries using OpenOCD, ST-Link Utility, or STM32CubeIDE. The USB interface operates as a CDC ACM device, allowing serial command protocols to be implemented independently of ST's GUI.

What are the supported input voltage limits and protection features?

The board accepts 7.5 V to 18 V DC at CN1, with reverse-polarity protection omitted but protected by the ST1S10's internal overvoltage lockout (UVLO threshold: 4.5 V min). No TVS or fuse is present on the main input; users must ensure external supply stability and transient suppression per IEC 61000-4-5 Level 3 if deployed in noisy environments.