Monolithic Power Systems Inc. EV2615A-Q-00A

Overview

EV2615A-Q-00A from Monolithic Power Systems is an evaluation board for the MP2615AGQ 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 dual status indicator outputs (CHGOK/ACOK) in a 3mm×3mm FCQFN package.

For engineers reviewing the EV2615A-Q-00A datasheet, EV2615A-Q-00A pinout, EV2615A-Q-00A application, or EV2615A-Q-00A equivalent, this board enables rapid validation of MP2615A's constant-off-time (COT) control, cell-count selection (via CELL pin), terminal voltage configuration (4.2V/4.35V per cell), thermal shutdown, and cycle-by-cycle overcurrent protection in real-world power-path layouts.

Technical Context

The EV2615A-Q-00A implements a complete reference design for the MP2615AGQ, integrating all critical passive components-including 22μF input/output ceramic capacitors (GRM32ER71E226KE15L), 6.2μH shielded inductor (Wurth 7440660062), 0.05Ω current-sense resistor (RL1206FR-070R05L), and dual-color LED indicators-on a 6.3cm × 6.3cm PCB with optimized thermal and EMI layout.

It supports hardware-configurable operation: JP1 sets CELL logic (high = 1-cell, low = 2-cell), JP2 sets SEL logic (high = 4.2V/cell, low = 4.35V/cell), and JP3 controls EN enable/disable; charge current is precisely set via RS1 using ICC = 100mV / RS1, enabling 2A at 50mΩ.

Key Specifications

Availability

EV2615A-Q-00A is available at Aetrix Electronics and suitable for smart phone power validation, portable media player battery management development, and handheld medical device charging system integration requiring stable component supply and fast-turn evaluation capability.

Supply support for EV2615A-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 control solutions.

The MP2615A product line delivers highly integrated, thermally robust switching battery chargers targeting space-constrained portable electronics, emphasizing accuracy, safety, and ease of system-level validation through reference boards like EV2615A-Q-00A.

FAQ

What is the primary function of the EV2615A-Q-00A evaluation board?

The EV2615A-Q-00A is a fully assembled demonstration platform for the MP2615AGQ switching battery charger IC. It enables engineers to verify key performance parameters-including 2A charge current regulation, ±0.75% full-battery voltage accuracy, COT-mode efficiency near VIN ≈ VBATT, and dual-status output behavior-without designing custom PCBs or sourcing discrete components.

How do I configure the board for 2-cell Li-ion battery charging?

Set JP1 to connect CELL to GND (logic low), which configures the MP2615AGQ for 2-cell operation with 8.75–18 V input range and 8.4 V or 8.7 V full-charge voltage depending on SEL setting. Confirm proper input voltage compliance and ensure CBATT capacitance (22 μF) meets ripple requirements for two-series cells.

Can the charge current be adjusted below 2A, and how?

Yes. Replace RS1 (0.05 Ω) with a higher-value precision resistor: ICC = 100 mV / RS1. For example, a 100 mΩ resistor yields 1 A; a 200 mΩ resistor yields 500 mA. Maintain 1% tolerance and ≥0.125 W power rating. Trickle current automatically scales to 10% of ICC.

What does the CHGOK signal indicate, and how is it used on this board?

CHGOK is an open-drain output that pulls low when charging is active and transitions high-impedance when charging completes or faults occur. On EV2615A-Q-00A, it drives the green LED (LED1) via R1/R2, providing immediate visual feedback of charge state without external logic or microcontroller polling.

Does the board include thermal protection validation features?

Yes. The MP2615AGQ integrates thermal shutdown, and the EV2615A-Q-00A layout uses copper pour under U1 (FCQFN-16) and adjacent ground planes to replicate real thermal dissipation. Board-level temperature rise under 2A load can be measured directly at test points near U1 and L1 to correlate with datasheet thermal derating curves.

Is NTC battery temperature monitoring implemented on this board?

No. While the MP2615AGQ supports NTC-based temperature monitoring via its NTC pin, the EV2615A-Q-00A board leaves the NTC connector unpopulated (C7/C8 marked NC). Users must add an external NTC circuit and route it to the NTC pin to enable temperature-dependent charge suspension or termination.