Monolithic Power Systems Inc. EV44010-S-00B

Overview

EV44010-S-00B from Monolithic Power Systems is a single-stage offline LED driver evaluation board built around the MP44010 boundary conduction mode PFC controller and MP26085 constant-current controller, delivering 30W output at 700mA into a 14-LED string with 85–265V AC input. It supports both PWM and 0–10V dimming, meets IEC61000-3-2 Class C and EN55015 EMI standards, and achieves high power factor.

For engineers reviewing the EV44010-S-00B datasheet, EV44010-S-00B pinout, EV44010-S-00B application, or EV44010-S-00B equivalent, this board enables rapid validation of single-stage PFC + CC LED driver topologies for commercial lighting, dimmable retrofit modules, and Class C-compliant AC/DC LED systems requiring stable current regulation and dual-dimming interface support.

Technical Context

The EV44010-S-00B implements a single-stage flyback-based topology integrating active PFC and constant-current regulation in one stage using MP44010 (SO-8) for boundary-mode PFC control and MP26085 (SOT23-8) for secondary-side current sensing and overvoltage protection. It uses an EF25 transformer with 1.12mH primary inductance and 55:10:27:9:55 winding ratio to support wide-input operation and precise current regulation.

Dimming is implemented via two hardware-selectable paths: R31 = 0Ω enables PWM dimming (5V square wave, 50% duty), while R35 = 0Ω enables 0–10V analog dimming. The board includes safety-critical components such as KBP206 bridge rectifier, AP2761/AP2763 MOSFETs, and 330µF/63V bulk capacitors, all validated for 30W continuous operation under full input range.

Key Specifications

Availability

EV44010-S-00B is available at Aetrix Electronics and suitable for commercial LED lighting, industrial retrofit installations, and dimmable architectural lighting systems requiring stable component supply and pre-validated reference designs.

Supply support for EV44010-S-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 analog and power ICs, with expertise in DC/DC converters, LED drivers, motor drivers, and power management solutions.

The EV44010-S-00B belongs to MPS's LED driver evaluation platform family, designed to accelerate development of Class C-compliant, single-stage offline LED drivers targeting cost-sensitive, high-efficiency commercial lighting applications.

FAQ

What is the primary purpose of the EV44010-S-00B evaluation board?

The EV44010-S-00B is a fully assembled, tested reference design for validating the MP44010 + MP26085 single-stage offline LED driver solution. It demonstrates 30W constant-current operation across universal AC input, meets IEC61000-3-2 Class C, and provides hardware-selectable PWM or 0–10V dimming-enabling rapid prototyping of compliant LED drivers without custom PCB development.

Which ICs are integrated on the EV44010-S-00B board?

The board integrates two key MPS ICs: the MP44010 (SO-8 package), a boundary-conduction-mode PFC controller that manages input current shaping and high power factor, and the MP26085 (SOT23-8 package), a secondary-side constant-current controller with overvoltage protection and dimming interface logic. These are the only active ICs dedicated to core LED driver functionality.

How do I configure the board for 0–10V dimming versus PWM dimming?

For 0–10V dimming, install a 0Ω resistor at R35 and leave R31 unpopulated (NS); apply 0–10V DC between the "0–10V DIM" and GND terminals. For PWM dimming, install 0Ω at R31 and leave R35 unpopulated; apply a 5V square wave (50% duty cycle) between "PWM DIM" and GND. Both configurations are mutually exclusive and require physical resistor placement per the Quick Start Guide.

Does the EV44010-S-00B include safety agency certification?

No-the board is an engineering prototype intended for lab evaluation only. It has not undergone UL, CE, or other third-party safety certification. Per the manufacturer's warning, all testing must be performed using an isolation transformer for AC input, and it is not approved for end-product use without additional safety validation and agency listing.

What is the maximum LED string voltage supported by this board?

Based on test conditions (14 LEDs in series, 700mA, 30W), the board supports up to ~43V LED forward voltage (30W ÷ 0.7A ≈ 42.9V). This aligns with the EF25 transformer's 55:10:27:9:55 turns ratio and MP26085's VFB threshold, limiting practical string voltage to ≤45V to maintain regulation margin and OVP headroom.

Can the EV44010-S-00B be used with non-MPS controllers?

No-it is a fixed-function evaluation board specifically designed for the MP44010 and MP26085. Its schematic, layout, and component values (e.g., CS resistor networks, COMP compensation, transformer turns ratio) are optimized for those ICs. Substituting alternate controllers would require redesign of feedback networks, gate drive, protection thresholds, and magnetics-defeating the purpose of an evaluation platform.