Monolithic Power Systems Inc. EV2724-RH-00A

Overview

EV2724-RH-00A from Monolithic Power Systems is an evaluation board for the MP2724GRH, a single-cell 2.2A NVDC buck charger IC with USB Type-C sink mode, I²C control, and JEITA-compliant thermal regulation. It supports 4–6.3V input, delivers up to 2.2A charge current, enables 5–5.35V boost/OTG output, and integrates NTC-based battery temperature monitoring for Li-ion/Li-polymer systems in portable electronics.

For engineers reviewing the EV2724-RH-00A datasheet, EV2724-RH-00A pinout, EV2724-RH-00A application, or EV2724-RH-00A equivalent, this board provides full hardware validation of MP2724's USB-C source detection (BC1.2 + proprietary), NVDC power path management, I²C-configurable charging profiles, and dual-NTC thermal supervision - critical for fast-charging wearables, tablets, and USB-C PD-powered devices.

Technical Context

The EV2724-RH-00A implements the MP2724GRH QFN-22 (2.5mm × 3.5mm) IC in a fully assembled, test-ready layout with pre-populated passive components including 1μH power inductor, 10μF input/output ceramics, and dual 10kΩ NTC resistor dividers. It exposes all key signals - including STAT/IB, PG/NTC2, RST, SCL/SDA, and CC1/CC2 - via 2.54mm headers and test points.

Board-level functionality includes default 4.2V charge termination, jumper-selectable LED indicators (STAT/IB and PG/NTC2), configurable I²C pull-ups, and USB-C connector (P1) with D+/D− routing. It supports both charger mode (VIN → BATT/SYS) and boost mode (BATT → SYS at 5–5.35V), enabling system-level validation of bidirectional power flow and USB On-The-Go operation.

Key Specifications

Availability

EV2724-RH-00A is available at Aetrix Electronics and suitable for USB-C portable device development, battery management system (BMS) validation, and USB On-The-Go (OTG) subsystem testing requiring stable component supply and rapid functional verification.

Supply support for EV2724-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 charging, motor drivers, and LED lighting solutions.

The MP2724 product line targets single-cell Li-ion/Li-polymer applications demanding high-efficiency, USB-C compatibility, and intelligent thermal management - designed specifically for space-constrained, fast-charging consumer and mobile electronics.

FAQ

What software is required to operate the EV2724-RH-00A?

The MP2724 evaluation software from Monolithic Power Systems is mandatory. It communicates with the board via the EVKT-USBI2C-02 interface and provides GUI-based register read/write, real-time status monitoring, JEITA profile configuration, and fault log viewing - no custom firmware or driver installation is needed beyond the provided package.

Does the board support USB-C Power Delivery (PD) negotiation?

No - the EV2724-RH-00A supports USB Type-C sink mode only, detecting adapter current capability (e.g., 900 mA, 1.5 A, 3 A) using BC1.2 and proprietary algorithms. It does not implement USB PD communication (SOP packets) or variable-voltage negotiation; input is limited to 4–6.3 V fixed.

Can the board operate without a battery connected?

Yes - the board supports system-only operation (SYS powered from VIN) and boost mode (SYS powered from BATT). In charger mode with no battery, the MP2724 enters low-power standby after detecting open-circuit battery terminals, and SYS remains powered if VIN is applied.

How are the NTC inputs configured on this evaluation board?

JP2 and JP3 enable onboard 10 kΩ resistor dividers for NTC1 and NTC2, respectively. Each connects to dedicated MP2724 pins (NTC1 on pin 20, NTC2 on pin 9) and supports independent temperature window definition in JEITA profiles. Jumpers JP6/JP7 and JP4/JP5 allow selective LED indication per channel.

Is external programming hardware required beyond the USB-to-I²C interface?

No - the EV2724-RH-00A requires only the EVKT-USBI2C-02 interface and MP2724 evaluation software. All configuration, monitoring, and control occur over I²C; no JTAG, SWD, or bootloader flashing is involved. The board has no internal nonvolatile memory - settings reset on power cycle unless reloaded via GUI.

What is the purpose of the PMID pin on the MP2724, and is it accessible on the board?

PMID is the power monitor output that reflects input source voltage scaled by an internal resistor divider. It is routed to test point TP1 on the EV2724-RH-00A and used for input voltage sensing and adapter type identification - essential for BC1.2 and proprietary source detection algorithms implemented in the MP2724.