Monolithic Power Systems Inc. EV150-J-00A

Overview

EV150-J-00A from Monolithic Power Systems is an evaluation board for the MP150GJ primary-side regulated offline AC/DC controller IC, supporting Buck, Buck-Boost, and Flyback topologies with integrated 500V/30Ω MOSFET, <150mW no-load power consumption, up to 2W output power, and green-mode frequency foldback for high light-load efficiency - validated for 5V/200mA operation across 85–265VAC input.

For engineers reviewing the EV150-J-00A datasheet, EV150-J-00A pinout, EV150-J-00A application, or EV150-J-00A equivalent, this board enables rapid validation of MP150GJ-based offline CV regulation in home appliance standby supplies, industrial control auxiliary rails, and low-power white goods power stages without optocoupler feedback.

Technical Context

The EV150-J-00A implements a complete reference design for the MP150GJ IC, configured as a flyback converter delivering 5V at up to 200mA from universal AC input (85–265VAC). It integrates all critical passive components including dual 3.3μF/400V electrolytic capacitors (C3, C4) enabling 500V surge immunity, and uses a 2.2mH primary inductor (L1) and 1mH secondary inductor (L2) per the MP150GJ DCM/CCM boundary requirements.

Test conditions are fixed at VIN = 85–265VAC, VOUT = 5V, IOUT = 200mA, TA = 25°C. The board's TSOT23-5 mounted MP150GJ operates in green mode with peak current compression and maximum frequency limitation active, ensuring <150mW no-load consumption and stable regulation under open-loop, short-circuit, over-load, thermal, and VCC UVLO fault conditions.

Key Specifications

Availability

EV150-J-00A is available at Aetrix Electronics and suitable for home appliance standby power, industrial control auxiliary supplies, and consumer electronics low-power AC/DC conversion requiring stable component supply, fast prototyping turnaround, and validated surge performance.

Supply support for EV150-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 expertise in DC/DC converters, LED drivers, motor drivers, and AC/DC controllers.

The MP150 product line delivers primary-side regulated offline controllers targeting cost-sensitive, low-power (<2W) applications where optocoupler-free voltage regulation, ultra-low no-load consumption, and integrated high-voltage MOSFETs reduce bill-of-materials and board space.

FAQ

What is the purpose of the EV150-J-00A evaluation board?

The EV150-J-00A is a fully assembled, tested reference design board for the MP150GJ primary-side regulated offline AC/DC controller. It demonstrates flyback topology operation at 5V/200mA across universal AC input (85–265VAC), includes all necessary passives and layout-optimized magnetics, and validates key features including green-mode efficiency, 500V surge immunity, and comprehensive protection schemes.

Does the board support multiple topologies out of the box?

The EV150-J-00A is configured and tested specifically for flyback operation. While the underlying MP150GJ IC supports Buck and Buck-Boost topologies, reconfiguration requires changes to transformer coupling, feedback network, and compensation components - not provided on this board. No jumper or configuration option enables topology switching without hardware modification.

What surge test level does the EV150-J-00A pass, and how is it achieved?

The board passes a 500V line surge test per IEC 61000-4-5, achieved using two parallel 3.3μF/400V electrolytic capacitors (C3 and C4) on the bulk input stage. The datasheet specifies that higher surge levels (e.g., 1000V or 2000V) require increased capacitance - 10μF and 22μF respectively - which are not populated on this revision.

Can the EV150-J-00A be used for continuous 2W output operation?

Yes - the board is validated for 5V/200mA (1W) operation, but the MP150GJ IC supports up to 2W output power. Sustained 2W operation requires verification of thermal performance under worst-case ambient conditions (e.g., >50°C), proper heatsinking of the TSOT23-5 U1 package, and confirmation that peak current limits (≤120mA DCM, ≤200mA CCM) and frequency foldback remain within specification across load and line variations.

What protections are implemented and verified on this board?

All MP150GJ-integrated protections are implemented and functionally verified: Thermal Shutdown (TSD), VCC Under-Voltage Lockout (UVLO), Over-Load Protection (OLP), Short-Circuit Protection (SCP), and Open-Loop Protection. These are confirmed via test waveforms in the user guide (Rev. 1.2, pages 4–7) under fault injection conditions including output short, input undervoltage, and open feedback loop.

Is the MP150GJ IC soldered directly onto the EV150-J-00A board?

Yes - the MP150GJ is permanently mounted in a TSOT23-5 package at U1 location. It is not socketed or replaceable without rework. The board uses standard lead-free reflow assembly per JEDEC J-STD-020, and the IC is RoHS-compliant and halogen-free per MPS quality specifications.