Monolithic Power Systems Inc. EV2615-Q-00A

Overview

EV2615-Q-00A from Monolithic Power Systems is an evaluation board for the MP2615GQ switching battery charger IC, designed to validate 1- or 2-cell Li-ion/Li-Polymer charging applications with up to 2A programmable charge current, ±0.75% full-battery voltage accuracy, and 4.1V/cell or 4.2V/cell selection via JP2. It integrates FCQFN-16 (3mm×3mm) MP2615GQ with internal power MOSFETs, COT control, and dual status outputs for real-time monitoring.

For engineers reviewing the EV2615-Q-00A datasheet, EV2615-Q-00A pinout, EV2615-Q-00A application, or EV2615-Q-00A equivalent, this board enables rapid validation of CC/CV charge profiles, thermal shutdown response, preconditioning behavior for deeply depleted batteries, and SEL/CELL/EN logic configuration under real input voltage (4.75–18V) and battery voltage (0–8.4V) conditions.

Technical Context

The EV2615-Q-00A implements a constant-off-time (COT) controlled buck switching charger architecture using the MP2615GQ IC, supporting both 1-cell (4.75–18V input) and 2-cell (8.75–18V input) configurations via JP1 CELL pin logic. It delivers precise 2A charge current via RS1 (0.05Ω), with independent CC and CV regulation loops achieving ±0.75% terminal voltage accuracy.

Board-level features include dual status indicators (LED1 green for charging active, LED2 red for fault/power status), on-board 6.2μH power inductor (Wurth 7440660062), 22μF input/battery ceramic capacitors (GRM31CR61E226KE15), and configurable safety timer, thermal shutdown, and cycle-by-cycle overcurrent protection-all accessible through test points and jumpers JP1–JP3.

Key Specifications

Availability

EV2615-Q-00A is available at Aetrix Electronics and suitable for smart phone reference design validation, portable media player battery subsystem prototyping, and handheld medical device charging circuit development requiring stable component supply and fast-turn evaluation support.

Supply support for EV2615-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 analog and power ICs, with core expertise in DC/DC conversion, battery management, and motor drive solutions.

The MP2615 product line delivers highly integrated switching Li-ion chargers with embedded MOSFETs, COT control, and comprehensive safety features-designed specifically for space-constrained, thermally sensitive portable electronics requiring accurate, efficient, and configurable battery charging.

FAQ

What is the purpose of JP1 on the EV2615-Q-00A board?

JP1 configures the number of battery cells: connecting to HIGH selects 1-cell operation (VIN = 4.75–18V); leaving it LOW or FLOAT selects 2-cell operation (VIN = 8.75–18V). This directly sets the MP2615GQ's battery voltage regulation range and enables correct CC/CV termination thresholds per cell count.

How is charge current programmed on this evaluation board?

Charge current is set by the sense resistor RS1 (0.05Ω default), using ICC(A) = 100mV / RS1(Ω). With RS1 = 0.05Ω, ICC = 2A. Trickle current is automatically 10% of ICC. The formula is implemented in the MP2615GQ's internal current-sense amplifier and does not require external DAC or digital interface.

Can the EV2615-Q-00A evaluate battery temperature monitoring?

No-the EV2615-Q-00A board does not include a thermistor or temperature-sensing circuit. While the MP2615GQ IC supports NTC-based battery temperature monitoring via its TS pin, this evaluation board omits the required external thermistor network and associated filtering components per the schematic and BOM.

What do the two LEDs indicate during operation?

LED1 (green) illuminates when MP2615GQ is actively charging (CHG pin asserted); LED2 (red) lights when input power is present (PGOOD signal active). Both are driven directly by MP2615GQ status outputs and provide immediate visual feedback without requiring oscilloscope probing.

Is the EN pin functional on this board, and how is it controlled?

Yes-JP3 controls the EN pin: connecting EN to VCC (HIGH) disables the MP2615GQ; leaving it FLOAT or tied to GND enables operation. This allows hardware-level on/off control independent of VIN presence, supporting system-level power sequencing and low-quiescent standby modes.

Does the board support safety timer configuration?

Yes-the MP2615GQ's safety timer is enabled by default and can be adjusted via external capacitor on the TIMER pin. Though no timer capacitor is populated in the base BOM, the board provides a dedicated footprint (CTMR) and test point access, enabling engineers to validate timeout behavior (e.g., 6–12 hours) under fault or slow-charge conditions.