Monolithic Power Systems Inc. EVX2001-Y-00D

Overview

EVX2001-Y-00D from Monolithic Power Systems is a 65W USB Type-C Power Delivery evaluation board implementing a secondary low-side flyback architecture with the MPX2001 all-in-one controller. It delivers four regulated PD profiles (20V/3.25A, 15V/3A, 9V/3A, 5V/3A) across universal 90–264VAC input, achieving up to 92.55% peak efficiency and <30mW no-load consumption while meeting DOE Level VI and CoC Tier 2 standards for compact phone and laptop adapters.

For engineers reviewing the EVX2001-Y-00D datasheet, EVX2001-Y-00D application notes, EVX2001-Y-00D reference design, or EVX2001-Y-00D bill of materials, this page provides verified test data, layout insights, EMI compliance results, and component-level implementation details critical for rapid PD adapter prototyping and regulatory validation.

Technical Context

The EVX2001-Y-00D implements a PSR/SSR hybrid flyback topology using the MPX2001 SOICW-20 controller, integrating primary-side MOSFET gate drive, secondary-side regulation, and synchronous rectification control without optocoupler or auxiliary winding feedback. Its burst-mode operation at light loads and frequency reduction down to 20kHz enable sub-30mW standby power.

It incorporates Cypress CYPD3175 QFN24 USB PD protocol handling, enabling full Type-C negotiation and dynamic voltage switching between 5V, 9V, 15V, and 20V outputs. Conducted EMI performance meets EN55022 Class B across all output voltages and input conditions, validated with line L/N measurements up to 30MHz.

Key Specifications

Availability

EVX2001-Y-00D is available at Aetrix Electronics and suitable for USB-C PD adapter development, industrial power supply qualification, and regulatory pre-compliance testing requiring stable component supply and documented reference design traceability.

Supply support for EVX2001-Y-00D 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 analog and power ICs, with over two decades of leadership in integrated power solutions for consumer, industrial, and automotive markets.

The EVX2001-Y-00D belongs to MPS's USB PD evaluation platform series, designed to accelerate time-to-market for compact, high-efficiency AC/DC adapters compliant with global energy and safety regulations.

FAQ

What is the role of the MPX2001 IC on this board?

The MPX2001 is the core all-in-one flyback controller (SOICW-20) that integrates primary-side gate drive, secondary-side regulation, and synchronous rectifier control. It eliminates the need for optocouplers or auxiliary windings, enables precise PSR/SSR hybrid operation, and supports burst mode and frequency jittering for efficiency and EMI optimization.

Does this board support USB PD 3.0 Programmable Power Supply (PPS)?

No - the EVX2001-Y-00D implements fixed-voltage USB PD profiles (5V/9V/15V/20V) using the Cypress CYPD3175 USB PD controller. It does not support PPS, which requires additional hardware and firmware capabilities beyond this reference design's scope.

Can the board be used for production, or is it strictly for evaluation?

This is an engineering evaluation board only. As stated in the documentation: "the engineering prototype has not been agency approved." It lacks safety certification (UL/EN62368-1), and users must implement isolation transformers during testing. It is not qualified for end-product deployment without full regulatory revalidation.

What transformer is used, and is its specification publicly available?

The board uses custom RM10 flyback transformer T1 with primary inductance 610μH ±10%, leakage inductance ≤10μH, and turn ratio Np:Ns:Naux = 48:6:15. Full winding diagrams, pinout, and electrical specs are provided in Appendix pages 29–30 of the official EVX2001-Y-00D Rev. 1.0 document.

How is EMI performance validated, and what test setup was used?

Conducted EMI was measured per EN55022 using LISN-based line L/N testing across all four output voltages (5V–20V) and input conditions (120/230VAC). Data shows compliance margins up to 10dB below Class B limits, with plots included for each configuration in the official test report (pages 25–28).

Is the Bill of Materials (BOM) complete and manufacturer-verified?

Yes - the 30-page document includes a fully itemized BOM (pages 6–7) listing every component with value, description, package, manufacturer, and exact part number (e.g., MPX2001GY, CYPD3175, MPQ2013AGJE-33-C672-Z). All parts are sourced from authorized suppliers and validated in the final assembly.