STMicroelectronics STEVAL-ISB018V1

Overview

STEVAL-ISB018V1 from STMicroelectronics is an evaluation board designed to validate the STCC5021 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, attach detection, and resistor-programmable current limiting up to 3 A.

For engineers reviewing the STEVAL-ISB018V1 datasheet, STEVAL-ISB018V1 pinout, STEVAL-ISB018V1 application, or STEVAL-ISB018V1 equivalent, this board enables rapid functional verification of USB charging negotiation, end-of-charge indication, CDP mode signaling, and short-circuit protection behavior in portable device docking and host-side charging applications.

Technical Context

The board implements the full signal path for STCC5021, including dual USB Type-A connectors (input and output), configurable D+/D− routing for SDP/CDP/DCP detection, and hardware-based charging status LEDs. It supports automatic mode switching between data pass-through and dedicated charging based on downstream port classification.

All critical STCC5021 control pins-including MODE_SEL, CHG_DET, ATTACH_N, and EN-are accessible via test points or jumpers, enabling real-time monitoring and manual override of USB enumeration, attach detection timing, and current limit configuration via external resistors.

Key Specifications

Availability

STEVAL-ISB018V1 is available at Aetrix Electronics and suitable for USB-C docking station validation, portable device accessory development, and embedded host-side charging controller qualification requiring stable component supply and documented reference design traceability.

Supply support for STEVAL-ISB018V1 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 specializing in microcontrollers, analog ICs, power management, and USB interface solutions for industrial, consumer, and automotive markets.

This evaluation board belongs to ST's STEVAL (ST Evaluation) series, engineered to accelerate time-to-test for USB power delivery and charging controller ICs in host and peripheral applications.

FAQ

Does STEVAL-ISB018V1 support USB 3.0 SuperSpeed data transfer verification?

Yes. The board provides direct, unbuffered USB 3.0 SuperSpeed differential pair routing between its upstream and downstream Type-A connectors, preserving signal integrity for eye diagram testing and protocol analyzer validation without introducing latency or impedance discontinuities.

Can the current limit threshold be adjusted during operation?

No. The current limit is set by an external resistor connected to the ILIM pin of the STCC5021 and remains fixed during operation. The board includes solder pads for three discrete resistor options (1.5 A, 2.1 A, and 3 A), but dynamic adjustment requires hardware rework.

Is S3 remote wakeup functionality validated on this board?

Yes. The board routes the STCC5021's WKUP pin to a test point and configures the USB 2.0 data lines to maintain S3 resume signaling capability during suspend, allowing verification of host-initiated wake events following USB attach detection.

Does STEVAL-ISB018V1 include firmware or require host software?

No. The STCC5021 operates autonomously using internal state machines and hardware comparators. This board is purely hardware-based-no firmware, drivers, or host-side software is needed to evaluate charging mode detection, LED indications, or data pass-through behavior.