Monolithic Power Systems Inc. EVKT-MPX2001-45-PD

Overview

EVKT-MPX2001-45-PD from Monolithic Power Systems is a complete evaluation kit for the MPX2001 all-in-one flyback controller, designed specifically to validate 45W USB-C Power Delivery (PD) adapter designs. It integrates the MPX2001 evaluation board (EVX2001-Y-02A), USBCEE PAT hardware, PAT utility software, Micro-USB and Type-C cables, and supports full PDO negotiation across 5V/9V/15V/20V outputs with up to 2.25A at 20V.

For engineers reviewing the EVKT-MPX2001-45-PD datasheet, EVKT-MPX2001-45-PD setup, EVKT-MPX2001-45-PD test procedure, or EVKT-MPX2001-45-PD software configuration, this kit enables rapid validation of high-density AC/DC USB PD adapter performance-including no-load power (<0.075W), DOE Level VI & CoC Tier 2 efficiency compliance, and real-time voltage/current profiling via GUI-controlled auto/manual PDO switching.

Technical Context

The EVKT-MPX2001-45-PD implements a dual-board architecture: a main power board centered on the MPX2001 flyback controller (integrating primary-side driver, secondary-side control, and synchronous rectifier drive) and a daughter board featuring the Cypress CYPD3175-24LQXQ USB PD controller for CC1/CC2 communication and VBUS management. The system operates across universal AC input (90–265VAC) and delivers regulated USB PD output profiles with precise current limiting and dynamic load response.

Hardware interaction is mediated through the USBCEE PAT interface, which provides isolated measurement of VBUS voltage, current, and timing during PDO transitions. Software control relies on the Cypress EZ-PD™ Configuration Utility and USBCEE PAT Utility running on Windows XP or later, requiring .NET Framework 3.5 and ≥50 MB disk space-enabling both manual channel selection and automated multi-voltage sweep testing.

Key Specifications

Availability

EVKT-MPX2001-45-PD is available at Aetrix Electronics and suitable for USB-C PD adapter development, power supply compliance testing, and high-efficiency flyback controller evaluation requiring stable component supply and traceable evaluation hardware.

Supply support for EVKT-MPX2001-45-PD 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with core expertise in integrated DC/DC, AC/DC, motor drivers, and USB PD solutions.

This kit supports MPS's MPX2001 product line - an all-in-one flyback controller family targeting ultra-compact, high-efficiency USB PD adapters where integration of primary-side control, SR drive, and secondary-side regulation eliminates optocouplers and TL431.

FAQ

What components are included in the EVKT-MPX2001-45-PD kit?

The kit contains the EVX2001-Y-02A MPX2001 evaluation board, USBCEE PAT hardware unit, PAT utility software (on USB thumb drive), one Micro-USB cable, and one Type-C cable. No external electronic load or AC source is included - those must be supplied by the user per Section 3.1 of the User Guide.

Does the kit support USB PD 3.0 programmable power supply (PPS)?

No. The EVKT-MPX2001-45-PD implements four fixed PDOs (5V/3A, 9V/3A, 15V/3A, 20V/2.25A) only. It does not support PPS or variable voltage negotiation; the Cypress CYPD3175-24LQXQ on the daughter board is configured for fixed-profile operation matching the MPX2001's capabilities.

Can the EVX2001-Y-02A board operate standalone without the USBCEE PAT?

No. The evaluation board requires the USBCEE PAT hardware for power measurement, VBUS monitoring, and GUI-based control. The PAT provides isolated sensing and acts as the communication bridge between the PC and the daughter board's CYPD3175 - no alternative interface or direct UART/JTAG access is provided on the EVX2001-Y-02A.

What safety precautions apply when operating this kit?

The board operates at hazardous AC mains voltages (up to 265VAC) and high-frequency switching nodes. Users must avoid contact with exposed traces, use insulated tools, ground the AC source properly, and never operate the board outside its specified input/output ranges. The User Guide explicitly warns against touching the board during operation.

Is the MPX2001 firmware configurable via this kit?

No. The MPX2001 is a fixed-function analog/digital hybrid controller with internal compensation and protection thresholds. Configuration is limited to the USB PD policy engine on the CYPD3175 - handled via Cypress EZ-PD™ Configuration Utility - while the MPX2001 itself has no user-accessible registers or firmware update capability.

What is the role of the daughter board in the EVKT-MPX2001-45-PD?

The daughter board hosts the Cypress CYPD3175-24LQXQ USB PD controller, Type-C receptacle, CC1/CC2 termination resistors, and VBUS discharge circuitry. It handles USB PD protocol negotiation, VBUS enable/disable sequencing, and communicates measurement data to the PAT hardware - decoupling digital PD control from the analog power stage on the main board.