Monolithic Power Systems Inc. EV2759A-Q-00A

Overview

EV2759A-Q-00A from Monolithic Power Systems is an evaluation board for the MP2759A switching battery charger IC, supporting 1S–6S Li-ion/Li-polymer packs with up to 36V input, 3A charge current, and programmable per-cell regulation voltage (3.6V–4.4V). It implements power path management, JEITA-compliant thermal monitoring, and four-phase charging control for industrial medical equipment, power tools, robotics, and wireless speakers.

For engineers reviewing the EV2759A-Q-00A datasheet, EV2759A-Q-00A pinout, EV2759A-Q-00A application, or EV2759A-Q-00A equivalent, this board enables rapid validation of MP2759A-based charger designs under real-world conditions including input voltage limits (10–28V), adjustable cell count (1–6), NTC-based temperature profiling, and dynamic power path arbitration between input source, battery, and system load.

Technical Context

The EV2759A-Q-00A board hosts the MP2759A QFN-19 (3mm×3mm) IC, which integrates a synchronous buck converter, battery sensing circuitry, NTC interface, and power path FET drivers. It supports adaptive input current limiting, minimum input voltage regulation, and configurable charge termination based on voltage, current, and timer thresholds.

Power path management operates in three modes: supply-only (no battery), charge-only (battery present, no system load), and simultaneous charge + system supply. The board exposes all critical test points (VIN, BATT, SYS, SW, PMID, ACOK, STAT, NTC) and uses jumpers (JP1–JP24) to configure cell count, per-cell V_{BATT_REG}, I_{IN_LIM}, I_CC, and V_{IN_MIN} without soldering.

Key Specifications

Availability

EV2759A-Q-00A is available at Aetrix Electronics and suitable for industrial medical equipment, power tools, robotic platforms, and portable audio systems requiring stable component supply, fast design iteration, and production-ready charger validation.

Supply support for EV2759A-Q-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 power management ICs, with over two decades of innovation in DC/DC converters, battery chargers, LED drivers, and motor controllers.

The MP2759A product line targets high-voltage, multi-cell portable and industrial battery systems requiring robust safety features, precise voltage regulation, and seamless power path arbitration - directly addressing design challenges in cordless power tools and mobile medical devices.

FAQ

What is the maximum input voltage the EV2759A-Q-00A board can safely handle?

The board is rated for up to 36V DC input, but safe operation requires ≥47µF electrolytic capacitance at VIN when input exceeds 20V, plus optional TVS clamping during hot-insertion transients. The MP2759A IC itself has absolute maximum VIN = 40V, and the board layout includes appropriate trace spacing and decoupling per MPS Rev. 1.0 guidelines.

How do I configure the board for a 4-cell Li-ion battery with 4.2V per cell?

Set JP7–JP10 to "4 cells" position and JP1–JP4 to "4.2V" position. Confirm jumper orientation using Table 3 in the user guide. Then connect the 4S battery pack (16.8V nominal) to TP5/BATT and TP4/GND, ensuring polarity matches silkscreen markings.

Does the board support JEITA-compliant charging temperature profiles?

Yes - the board implements JEITA via dual NTC resistors (RNTC1, RNTC2) and configurable divider (JP13), enabling full cold/cool/normal/warm/hot zone detection. The MP2759A automatically suspends charging outside the configured narrow NTC window, as validated in thermal test waveforms on page 8–9 of the reference document.

Can I use the EV2759A-Q-00A to evaluate power path behavior under system load?

Yes - connect the system load to TP3/SYS and TP6/GND. The board demonstrates real-time power path arbitration: when VIN is present and sufficient, it powers SYS directly while charging the battery; if VIN drops or is removed, SYS draws from the battery. Waveforms on pages 8–9 confirm seamless transition with <100 µs interruption.

What external components must be added for >20V input operation?

Per Table 4, add a 47µF/50V electrolytic capacitor between VIN and GND. For hot-insertion protection above 40V, add a TVS diode (e.g., SMAJ36A) across VIN–GND. Also connect a 2A/40V Schottky diode (e.g., B140A) from VIN to PMID to enable proper power path bootstrap during startup.

Is the MP2759A IC on this board RoHS-compliant and lead-free?

Yes - the MP2759AGQ-0000 IC is lead-free, halogen-free, and fully RoHS-compliant per MPS green status documentation. All passive components on the EV2759A-Q-00A BOM (e.g., Murata GRM series, Yageo RC/RL series) are also RoHS-compliant and meet IPC-J-STD-609A marking requirements.