Monolithic Power Systems Inc. EVX2002-Y-00D

Overview

EVX2002-Y-00D from Monolithic Power Systems is a 65W USB Type-C Power Delivery adapter evaluation board built around the MPX2002 all-in-one flyback controller. It delivers five programmable PD output profiles (5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.25A), achieves up to 92% peak efficiency at 20V/3.25A, supports DOE Level VI and CoC Tier 2 compliance, and maintains <30mW no-load power consumption - enabling compact, high-density cellphone and laptop charger designs.

For engineers reviewing the EVX2002-Y-00D datasheet, EVX2002-Y-00D pinout, EVX2002-Y-00D application, or EVX2002-Y-00D equivalent, this board provides validated reference schematics, BOM, transformer design, and full test data for rapid prototyping of universal offline isolated AC/DC converters with USB-C PD negotiation capability.

Technical Context

The EVX2002-Y-00D implements a dual-solution architecture: one main board integrating the MPX2002 flyback controller (SOICW-16) with primary-side regulation, synchronous rectification drive, and safety-compliant feedback, plus two interchangeable daughter boards - Cypress CCG3PA (QFN-24) or Weltrend WT6636F (QFN-16) - handling USB PD protocol stack, CC line control, and VBUS switching. The MPX2002 operates in quasi-resonant mode in DCM and burst mode at light loads to optimize efficiency and standby power.

Board-level features include integrated X-cap bleeder (HF81GS-Z), 46mm × 45mm × 23mm form factor, 90–264VAC input range, and dual-path transient response validation across all five PD voltage rails. Performance is verified per CoC Tier 2 requirements, with average efficiencies ≥89.3% at 5V/3A and ≥91.1% at 20V/3.25A under 115VAC/60Hz conditions.

Key Specifications

Availability

EVX2002-Y-00D is available at Aetrix Electronics and suitable for USB-C PD charger development, industrial power supply reference design, and consumer electronics OEM qualification requiring stable component supply, full documentation, and production-ready schematics.

Supply support for EVX2002-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 power management ICs, including DC/DC converters, LED drivers, motor drivers, and AC/DC controllers - headquartered in Kirkland, WA, with global design and support centers.

The EVX2002-Y-00D belongs to MPS's AC/DC evaluation platform family, designed specifically to accelerate time-to-market for energy-efficient, small-form-factor USB-C PD adapters targeting consumer, computing, and portable electronics markets.

FAQ

What USB PD protocols does the EVX2002-Y-00D support?

The board supports USB Power Delivery 3.0 with fixed PDOs: 5V/3A, 9V/3A, 12V/3A, 15V/3A, and 20V/3.25A. It implements full PD negotiation using either Cypress CCG3PA or Weltrend WT6636F controllers, both certified for USB-IF compliance and supporting programmable current limits and voltage transitions per PD specification.

Does the EVX2002-Y-00D require external firmware updates?

No. Both daughter board options ship with pre-flashed, production-grade firmware: Cypress CCG3PA uses CYPD3175 with factory-programmed PD stack, and Weltrend WT6636F includes embedded PD 3.0 firmware. No host PC or programming tool is needed for basic operation - only AC input and load connection required.

Can the EVX2002-Y-00D be modified for custom output voltages?

Yes - output voltage levels are set by resistor dividers on the daughter board (e.g., R22/R23 on Cypress version, R26/R30 on Weltrend version). The MPX2002 main board supports adjustable secondary-side feedback; however, any change requires revalidation of safety isolation, efficiency, and PD compliance per IEC 62368-1 and USB-IF test plans.

What safety certifications has the EVX2002-Y-00D achieved?

The board itself is not a certified end-product but is designed to meet key safety and regulatory requirements: reinforced isolation per IEC 62368-1, creepage/clearance compliant with 3mm primary-secondary spacing, and EMI performance aligned with CISPR 32 Class B. Final system certification remains the responsibility of the end-equipment manufacturer.

Is transformer T1 included with the EVX2002-Y-00D board?

Yes - the RM10-based transformer (FX0606, LP = 610µH, turns ratio NP:NS:NAUX1:NAUX2 = 48:6:6:9) is soldered onto the main board and fully characterized in the datasheet. Its design supports CCM/DCM boundary operation and integrates auxiliary windings for VCC and sensing - no external transformer substitution is needed for baseline operation.

How is load transient performance validated on this board?

Transient response is measured across all five PD output voltages using standardized 10%–90% and 25%–75% load steps at 150mA/µs slew rate. Data shows VPP ≤ 700mV at full-step transitions (e.g., 696mV at 20V), and ≤224mV at mid-range steps (e.g., 208mV at 15V), confirming stable regulation under dynamic smartphone/laptop charging profiles.