Monolithic Power Systems Inc. EV2223-J-00A

Overview

EV2223-J-00A from Monolithic Power Systems is a dual-channel synchronous step-down DC/DC converter evaluation board featuring the MP2223GJ IC, delivering 3A and 2A continuous output currents at 1.8V and 1.2V respectively, with 540kHz fixed-frequency operation, 180° out-of-phase channel timing, and integrated 70mΩ/50mΩ (CH1) and 100mΩ/60mΩ (CH2) MOSFETs - used for validating power sequencing in compact computing and networking systems.

For engineers reviewing the EV2223-J-00A datasheet, EV2223-J-00A pinout, EV2223-J-00A application, or EV2223-J-00A equivalent, this board enables rapid validation of dual-rail voltage regulation, light-load efficiency, EMI-reduced interleaved switching, and enable-controlled power-up sequencing under real-world load and thermal conditions.

Technical Context

The EV2223-J-00A implements the MP2223GJ dual buck controller in a fully assembled, tested layout with optimized component selection: CH1 uses a 3.3µH/11A inductor (Würth 744311330), CH2 uses a 1.5µH/14A inductor (Würth 744311150), and output filtering includes 10µF and 22µF X5R ceramic capacitors in 1206 case.

It supports input voltages from 4.5V to 18V, delivers regulated 1.8V/3A and 1.2V/2A outputs, incorporates hiccup-mode OCP, thermal shutdown, and OVP protection, and enables independent channel control via separate EN pins routed to test points.

Key Specifications

Availability

EV2223-J-00A is available at Aetrix Electronics and suitable for laptop power validation, server VRM prototyping, and distributed power system development requiring stable component supply and fast-turn evaluation support.

Supply support for EV2223-J-00A 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 innovation in DC/DC conversion, motor drivers, and LED lighting controllers.

The MP2223 product line targets space-constrained, multi-rail applications such as portable computing and network infrastructure, emphasizing low-noise interleaved operation, robust protection, and minimal external component count.

FAQ

What is the purpose of the EV2223-J-00A evaluation board?

The EV2223-J-00A is a fully assembled reference design board for the MP2223GJ dual-channel synchronous buck converter. It provides validated hardware to evaluate electrical performance, thermal behavior, and power sequencing under real loads - including pre-populated inductors, input/output capacitors, and resistor networks matching the recommended application circuit.

Can the output voltages be adjusted on this board?

Yes - VOUT1 (1.8V) and VOUT2 (1.2V) are set by feedback resistors R1/R2 and R2A/R4A respectively. The board includes test points and zero-ohm jumpers (R3/R3A) allowing reconfiguration to other output voltages down to 0.8V using standard resistor values per the MP2223 datasheet's feedback divider equations.

Does the board support independent enable control for each channel?

Yes - EN1 and EN2 signals are brought out to separate test points (TP1 and TP2). Each accepts TTL-compatible logic: >1.41V enables the respective channel, <0.95V disables it. This allows precise power-up/down sequencing and dynamic channel enable/disable during system testing.

What thermal performance can be expected during full-load operation?

At 12V input, 1.8V/3A and 1.2V/2A outputs, and 25°C ambient, the MP2223GJ junction temperature remains below 95°C per thermal imaging data in the official EV board documentation. The board uses 2oz copper layers and thermal vias under the IC pad to sustain continuous operation without forced airflow.

Are input and output capacitors rated for high ripple current?

Yes - C1/C1A (10µF/25V X5R, 1206) and C2/C2A/C3 (22µF/16V X5R, 1206) are selected for low ESR and ≥1.5A RMS ripple current handling. Their combined capacitance and placement minimize input voltage droop and output voltage overshoot during transient load steps up to 3A/µs.

Is the board RoHS-compliant and lead-free?

Yes - all components on EV2223-J-00A, including the MP2223GJ IC, Würth inductors, Murata capacitors, and Yageo resistors, meet RoHS Directive 2011/65/EU requirements. The PCB uses lead-free ENIG surface finish and complies with MPS's halogen-free and green material policy.