Monolithic Power Systems Inc. EVX2002-44018A-00B

Overview

EVX2002-44018A-00B from Monolithic Power Systems is a 140W, Type-C Power Delivery 3.1 (PD 3.1) adapter evaluation board built around the MPX2002 flyback controller and MP44018A PFC controller. It delivers up to 28V/5A output, achieves 94.3% peak efficiency at full load, maintains <100mW no-load consumption, and meets DOE Level VI and CoC Tier 2 efficiency standards for universal offline AC/DC power adapters targeting smartphones and laptops.

For engineers reviewing the EVX2002-44018A-00B datasheet, EVX2002-44018A-00B pinout, EVX2002-44018A-00B application, or EVX2002-44018A-00B equivalent, this board serves as a complete reference design for compact, high-density PD 3.1 power supplies with multi-voltage programmable outputs (5V/3A to 28V/5A), integrated safety-compliant feedback, and GaN-compatible synchronous rectification control.

Technical Context

The board implements a two-stage architecture: an active CrM/DCM PFC front-end using the MP44018A (with dead-time extension for light-load efficiency and variable-on-time control reducing THD), followed by a quasi-resonant flyback stage using the MPX2002 (integrating primary-side regulation, secondary-side control, SR driver, and safety feedback). The MPX2002 enables CCM-safe synchronous rectification and burst-mode operation below 10% load.

A dedicated daughter board hosts the CYPD3175 USB PD 3.1 controller, managing CC1/CC2 communication, VBUS switching, VCONN generation, and dynamic voltage negotiation across six PD profiles (5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A, 28V/5A). The design uses Navitas NV6127 GaN FETs and includes EMI filtering compliant with conducted noise standards via HF81 X-cap bleeder and frequency jittering.

Key Specifications

Availability

EVX2002-44018A-00B is available at Aetrix Electronics and suitable for smartphone fast-charging adapters, ultraportable laptop power supplies, and universal multi-device PD 3.1 chargers requiring stable component supply and validated reference design support.

Supply support for EVX2002-44018A-00B 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 for consumer, industrial, and automotive applications.

The EVX2002-44018A-00B belongs to MPS's high-efficiency AC/DC evaluation platform family, engineered specifically to accelerate development of compact, high-power-density USB PD 3.1 adapters meeting stringent global energy efficiency and safety regulations.

FAQ

What are the supported USB PD 3.1 voltage profiles on this board?

The EVX2002-44018A-00B supports six certified PD 3.1 profiles: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A, and 28V/5A. These are implemented via the Cypress CYPD3175 PD controller and verified through full protocol stack testing per USB-IF compliance requirements.

Does the board include both PFC and isolated flyback stages?

Yes - it integrates a complete two-stage architecture: an MP44018A-based critical conduction mode (CrM)/discontinuous conduction mode (DCM) active PFC stage, followed by an MPX2002-based quasi-resonant flyback converter with integrated PSR/SSR hybrid regulation and synchronous rectification control.

What is the measured no-load power consumption across input voltage range?

Measured no-load consumption is 44.83mW at 90VAC, 47.64mW at 115VAC, 66.57mW at 230VAC, and 74.69mW at 264VAC - all well below the 100mW limit required for DOE Level VI certification.

Which GaN device is used, and what is its package type?

The board uses the Navitas NV6127 650V GaN power transistor in a 6mm × 8mm QFN-31 package. It is driven by the MPX2002's integrated gate driver and operates in QR mode to maximize efficiency and minimize switching losses.

Can this evaluation board be modified for custom output voltages beyond the listed PD profiles?

Yes - the CYPD3175 firmware is field-upgradable, and resistor-divider networks for FB and VBUS sensing are accessible on the daughter board. Output voltage reconfiguration requires updating PD policy engine parameters and validating loop stability per new target voltage/current combinations.

Is the board RoHS and REACH compliant?

Yes - all components on the EVX2002-44018A-00B meet RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006 requirements, as confirmed by MPS's material declarations and supplier certifications included in the official BOM documentation.