Monolithic Power Systems Inc. EV2721-RH-00A

Overview

EV2721-RH-00A from Monolithic Power Systems is a fully assembled evaluation board for the MP2721GRH, a 5A, I²C-controlled, narrow-voltage DC (NVDC) switching charger IC targeting single-cell Li-ion/Li-polymer battery systems. It supports 4–16V input, delivers up to 5A charge current, enables boost-mode OTG output (5–5.35V/3A), and implements JEITA-compliant thermal regulation with dual NTC inputs.

For engineers reviewing the EV2721-RH-00A datasheet, EV2721-RH-00A pinout, EV2721-RH-00A application, or EV2721-RH-00A equivalent, this board provides validated hardware reference, GUI-based register-level configuration via USB-to-I²C interface (EVKT-USBI2C-02), real-time status monitoring, and configurable charging profiles for portable power design validation.

Technical Context

The EV2721-RH-00A implements the MP2721's NVDC architecture, enabling independent system load and battery charging paths with seamless power-path arbitration. Its input source detection supports USB BC1.2 and proprietary high-voltage adapters, while the integrated 22-pin QFN package hosts dedicated pins for STAT/IB, PG/NTC2, BST, PMID, and dual NTC sensing.

Board-level features include on-board 1μH power inductor (Wurth 78438356010), 10μF ×4 ceramic input/output capacitors (Murata GRM21BR61C106K), jumper-configurable LED indicators (STAT/IB, PG/NTC2), and test points for all critical signals (IN, SYS, BATT, SCL, SDA, INT, RST).

Key Specifications

Availability

EV2721-RH-00A is available at Aetrix Electronics and suitable for portable medical devices, industrial handhelds, and USB-C powered consumer electronics requiring stable component supply, rapid firmware validation, and production-ready power architecture verification.

Supply support for EV2721-RH-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 expertise in DC/DC conversion, battery management, and motor control solutions for industrial, automotive, and consumer markets.

The MP2721 product line delivers highly integrated, I²C-programmable NVDC chargers optimized for space-constrained, thermally sensitive single-cell battery applications-enabling faster time-to-market for USB-C PD and smart portable designs.

FAQ

What software is required to operate the EV2721-RH-00A?

The official MP2721 Evaluation Software must be installed on a Windows PC. It communicates with the board via the EVKT-USBI2C-02 USB-to-I²C adapter and provides GUI-based register configuration, real-time status monitoring, and JEITA profile editing without requiring custom firmware development.

Does the board support both charging and OTG modes simultaneously?

No. The EV2721-RH-00A supports either charger mode (IN → BATT/SYS) or boost-mode OTG (BATT → IN/SYS), but not concurrent operation. Mode selection is controlled by register settings and requires explicit software configuration before transitioning between states.

How are the NTC inputs configured on this evaluation board?

The board provides two onboard NTC resistor dividers (JP2 for NTC1, JP3 for NTC2), each connected to dedicated MP2721 pins. Jumper JP6 enables PG/NTC2 LED indication, and JP7 routes NTC2 to the PG/NTC2 pin-both jumpers must not be installed simultaneously per design constraints.

Can the default 4.2 V charge termination voltage be modified?

Yes. The default 4.2 V full-charge threshold is set in firmware but is fully reprogrammable via I²C registers. The MP2721 supports charge voltage adjustment from 3.5 V to 4.6 V in 10 mV steps, allowing customization for different Li-ion chemistries or aging compensation.

What test equipment is needed for basic functional validation?

A DC power supply (0–16 V, ≥5 A), battery simulator (0–4.6 V, ≥6 A), and electronic load (for SYS output testing) are required. Optional equipment includes oscilloscope probes for SW/BST waveform analysis and multimeter verification of STAT/IB and PG/NTC2 logic levels.

Is the USB Type-C connector on P1 used for data or power only?

P1 is a 5 A-rated USB Type-C receptacle used exclusively for physical input power connection-not for USB data communication. I²C communication uses the separate SCL/SDA/GND header (P1 is unrelated to the I²C bus).