STMicroelectronics STEVAL-ISC005V1

Overview

STEVAL-ISC005V1 from STMicroelectronics is a ready-to-use USB Power Delivery (PD) sink evaluation board based on the STUSB4500 certified controller, supporting USB Type-C™ Rev 1.2 and USB PD Rev 2.0/3.0 with TID 1000133, delivering up to 20 V / 3 A via three configurable PDOs (5 V, 15 V, 20 V), and integrating an L7985 2 A step-down regulator for stable 5 V output to power MCU development boards like NUCLEO-F072RB.

For engineers reviewing the STEVAL-ISC005V1 datasheet, STEVAL-ISC005V1 pinout, STEVAL-ISC005V1 application, or STEVAL-ISC005V1 equivalent, this board enables rapid validation of USB PD sink negotiation, VBUS discharge control, short-to-VBUS protection (22 V on CC, 28 V on VBUS), customizable startup profiles, and multi-path power delivery in embedded charging systems.

Technical Context

The board implements a complete USB PD sink stack using STUSB4500 in standalone auto-run mode, handling CC line detection, PD message exchange (SOP), and policy engine execution without host intervention. It supports up to three programmable PDOs and includes hardware-level protections including VBUS overvoltage clamping and CC pin short-to-VBUS tolerance.

Power conversion is handled by the L7985 synchronous buck converter (22 µH inductor, 10 µF output capacitance), generating regulated 5 V from negotiated VBUS input (5–20 V), while discrete STL6P3LLH6 MOSFETs manage VBUS switching and active discharge paths per USB PD specification.

Key Specifications

Availability

STEVAL-ISC005V1 is available at Aetrix Electronics and suitable for USB PD sink validation, embedded charger design verification, and MCU-powered peripheral power architecture prototyping requiring stable component supply and CE/RoHS-compliant evaluation platforms.

Supply support for STEVAL-ISC005V1 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, analog ICs, power management devices, and USB interface solutions for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL evaluation platform family, engineered to accelerate USB PD system integration by providing fully validated reference designs with production-grade protection, regulation, and communication layers.

FAQ

What USB PD specifications does STEVAL-ISC005V1 support?

STEVAL-ISC005V1 supports USB PD Revision 2.0 and 3.0, along with USB Type-C™ Revision 1.2, and carries official USB-IF certification (TID 1000133). It implements full PD messaging (SOP), policy engine execution, and source negotiation - all handled autonomously by the STUSB4500 without external firmware.

Can the power data objects (PDOs) be modified in the field?

Yes - PDOs are fully customizable using ST's graphical user interface (GUI) via I²C connection to a NUCLEO-F072RB board. The GUI allows real-time editing of voltage/current limits, enabling rapid adaptation to different source capabilities or end-system load requirements.

Does the board provide overvoltage protection on CC and VBUS lines?

Yes - it features integrated short-to-VBUS protection: CC pins tolerate up to 22 V, and VBUS pins tolerate up to 28 V. This meets USB PD specification requirements for robust fault handling during plug insertion, cable faults, or source misbehavior.

Is a 5 V output available for powering external circuits?

Yes - the board integrates an L7985 2 A synchronous buck regulator that steps down negotiated VBUS (5–20 V) to a stable 5 V output with low ripple (<20 mVpp), capable of powering MCUs, sensors, or logic circuits directly - verified with 10 µF and 220 nF output capacitors.