Monolithic Power Systems Inc. EV4088-S-00A

Overview

EV4088-S-00A from Monolithic Power Systems is an evaluation board designed to demonstrate the MP4088GS - a high-line, TRIAC-dimmable, single-stage buck-boost LED driver IC with integrated 500V MOSFET. It delivers 55V/100mA constant current output (5.5W) across 198–265VAC/50Hz input, achieves >0.80 power factor and <50.3% THD, and fits within GU10 bulb enclosures for cost-sensitive residential lighting.

For engineers reviewing the EV4088-S-00A datasheet, EV4088-S-00A pinout, EV4088-S-00A application, or EV4088-S-00A equivalent, this board enables rapid validation of dimming compatibility (tested with 25 leading/trailing-edge dimmers), surge immunity (IEC61547), conducted EMI (EN55015), and thermal performance under full-load and dimmed conditions.

Technical Context

The EV4088-S-00A implements a single-stage buck-boost topology using the MP4088GS controller, eliminating isolation and reducing BOM count. It relies on a custom EE10 transformer (2mH ±8%, 277-turn primary winding) and proprietary hybrid operation mode to maintain stable LED current across wide AC input range and dimmer phase angles.

Key circuit functions include internal HV startup from the HV pin, programmable over-voltage protection via R8/R9 divider, LED current sensing through parallel resistors R10 (2.2Ω) and R12 (3.3Ω), and active bleeder network (R7/C4) to sustain TRIAC holding current during leading-edge dimming.

Key Specifications

Availability

EV4088-S-00A is available at Aetrix Electronics and suitable for residential LED bulb development, industrial retrofit lamp design, and commercial downlight qualification requiring stable component supply, repeatable reference designs, and pre-validated safety compliance.

Supply support for EV4088-S-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 core expertise in DC/DC converters, LED drivers, motor drivers, and battery management solutions.

The EV4088-S-00A belongs to MPS's LED driver evaluation platform family, engineered specifically to accelerate adoption of cost-optimized, dimmable, non-isolated LED drivers for compact, high-efficiency solid-state lighting applications.

FAQ

What is the maximum LED string voltage the EV4088-S-00A can drive?

The board is configured for 55V typical output with 100mA constant current, supporting up to 18 standard white LEDs (3.0–3.2V each) in series. Output OVP is set by R8/R9 divider and can be adjusted, but the default design targets 55V ±5% under full load and line variation.

Does the EV4088-S-00A require external programming or configuration?

No. The board operates out-of-box with fixed component values: LED current is set by R10 (2.2Ω) and R12 (3.3Ω) in parallel (effective ~1.31Ω), OVP threshold by R8/R9 (33kΩ/300kΩ), and dimming behavior determined by R7/C4 bleeder network and snubber components - no firmware or register settings needed.

Can the EV4088-S-00A be used with trailing-edge (ELV) dimmers?

Yes. Test data confirms flicker-free operation with 10 trailing-edge dimmers including Busch 6513 U-102, Siemens 5TC8 284, and MIKA 433 HAB. Performance relies on D3/R6 network to manage capacitive discharge and maintain stable conduction during dimmer turn-off.

What is the thermal performance under continuous operation?

At 230VAC full load with no dimmer, the MP4088GS junction temperature reaches 78.8°C and bleeder resistor R7 reaches 68.4°C. With leading-edge dimming at 50% phase, R7 rises to 91.4°C - confirming need for adequate PCB copper area and airflow in final enclosure design.

Is the EV4088-S-00A agency-certified for safety standards?

No. As stated in the documentation, this is an engineering prototype not submitted for UL, CE, or other agency certification. It satisfies IEC61547 surge, EN55015 EMI, and IEC61000-3-2 harmonics requirements, but end-product certification must be performed separately on the final implementation.

What transformer specifications are required for replication?

The custom EE10 transformer has 277 turns of 0.18mm magnet wire on pin 3–4, measured inductance 2mH ±8% at 60kHz/0.1VRMS, core AL value 221.5nH/N² ±2%, and withstands 1000VAC isolation between winding and core - exact replica requires matching core material (UI=2500±25%), bobbin pinout, and varnish coating.