STMicroelectronics STEVAL-ISB019V1

Overview

STEVAL-ISB019V1 from STMicroelectronics is an evaluation board designed to validate the STCC2540 USB charging controller, supporting USB 2.0 SDP/CDP data pass-through with S3 remote wakeup, permanent USB 3.0 SuperSpeed pass-through, BC1.2-compliant DCP modes, resistor-programmable current limiting (±5% accuracy), and end-of-charging detection.

For engineers reviewing the STEVAL-ISB019V1 datasheet, STEVAL-ISB019V1 pinout, STEVAL-ISB019V1 application, or STEVAL-ISB019V1 equivalent, this board enables functional validation of USB charging negotiation, charging status indication, short-circuit protection behavior, and precise current limit calibration in real-world host-peripheral interconnect scenarios.

Technical Context

The board implements the full signal path for STCC2540, including dual USB Type-A connectors (upstream/downstream), configurable D+/D− termination networks for CDP/DCP mode selection, and dedicated LED indicators for charging state and negotiation success. It supports both automatic and manual mode configuration via on-board jumpers.

Power delivery is routed through a precision current-sense resistor (0.05 Ω, ±1%) and a low-R_DS(on) MOSFET switch (STL30PF3LL) for short-circuit protection activation at ≤1.5 A. All USB signal lines are impedance-controlled (90 Ω differential) and include ESD protection diodes (ESDA6V1SC6).

Key Specifications

Availability

STEVAL-ISB019V1 is available at Aetrix Electronics and suitable for USB peripheral design validation, BC1.2 compliance testing, and embedded host-side charging controller integration requiring stable component supply and documented reference implementation.

Supply support for STEVAL-ISB019V1 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, delivering microcontrollers, analog ICs, power management, and USB interface solutions for industrial, consumer, and automotive markets.

The STEVAL-ISB019V1 belongs to ST's ST evaluation board family, specifically engineered to accelerate adoption of its USB charging controller portfolio by providing fully tested, schematically documented, and production-ready reference hardware.

FAQ

Does STEVAL-ISB019V1 support USB 3.0 SuperSpeed data pass-through without protocol conversion?

Yes. The board routes USB 3.0 TX/RX differential pairs directly between upstream and downstream Type-A connectors with controlled 90 Ω impedance and no active components in the path, preserving SuperSpeed signaling integrity per USB 3.0 specification Rev. 1.0.

How is charging mode selection implemented on this evaluation board?

Charging mode is selected via three-position DIP switch (SW1): position 1 = CDP mode with S3 wakeup, position 2 = BC1.2 DCP auto-detect, position 3 = BC1.2 DCP divider mode. Each mode activates corresponding LED indicators (D3–D5) upon successful negotiation.

Can the current limit be adjusted, and what is the supported range?

Yes. Current limit is set using external resistor R10 (0–10 kΩ range). With default 2.2 kΩ, it delivers 1.2 A ±5%; full range spans 0.5 A to 1.5 A, calibrated per STCC2540's I_LIM = 1.2 V / R_SET equation.

Is firmware or host software required to operate STEVAL-ISB019V1?

No. The board operates autonomously: STCC2540 performs all charging negotiations in hardware. No host driver, firmware update, or PC software is needed - plug-and-play operation with any compliant USB host and device.