Monolithic Power Systems Inc. EVKT-MP2733

Overview

EVKT-MP2733 from Monolithic Power Systems is an evaluation kit for the MP2733 standalone switching battery charger IC, supporting USB detection and USB On-the-Go (OTG) functionality. It includes the EV2733-QC-00A evaluation board, EVKT-USBI2C-02 USB-to-I2C interface, cables, and GUI software - configured for single-cell Li-ion charging at 4.2V with up to 4.5A charge current and 3.0A OTG boost output.

For engineers reviewing the EVKT-MP2733 datasheet, EVKT-MP2733 pinout, EVKT-MP2733 application, or EVKT-MP2733 equivalent, this kit enables rapid validation of MP2733's I2C-programmable charge/OTG parameters, NVDC power path behavior, thermal regulation, and JEITA-compliant battery safety in portable power systems.

Technical Context

The EVKT-MP2733 implements a complete hardware-software test environment for the MP2733 buck charger IC. It supports real-time I2C register access via MPS Virtual Bench Pro GUI, enabling dynamic adjustment of charge voltage (±0.5% accuracy), input current limit, OTG output (4.8–5.5V), and MPPT-based VIN_MIN regulation - all while monitoring six analog signals via integrated ADC.

Hardware consists of two interoperable modules: the EV2733-QC-00A (6.3cm × 6.3cm PCB with MP2733, power FETs, and sensing resistors) and EVKT-USBI2C-02 (USB-powered I2C bridge with USBXpress firmware). The kit operates across 3.7V–16V input and requires Windows XP+ with .NET Framework 4.0 and ≥22.2MB free space.

Key Specifications

Availability

EVKT-MP2733 is available at Aetrix Electronics and suitable for battery management system development, USB-C portable device prototyping, and OEM power architecture validation requiring stable component supply, repeatable lab testing, and fast-turn design iteration.

Supply support for EVKT-MP2733 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, and motor control solutions for consumer, industrial, and automotive markets.

The MP2733 product line delivers highly integrated, I2C-configurable battery chargers targeting space-constrained portable electronics - designed to replace discrete charge controller + USB ID + OTG boost solutions with single-chip power path management.

FAQ

What hardware components are included in the EVKT-MP2733 kit?

The EVKT-MP2733 contains the EV2733-QC-00A evaluation board (featuring the MP2733 IC, power MOSFETs, current-sense resistors, and input/output connectors), the EVKT-USBI2C-02 USB-to-I2C communication interface, one USB cable, and one 10-pin ribbon cable for SCL/SDA/GND connection between modules.

Does the EVKT-MP2733 support real-time parameter tuning during operation?

Yes - using the MPS I2C Evaluation GUI, users can dynamically adjust charge voltage, input current limit, OTG output voltage (4.8–5.5V), pre-charge current, and JEITA thresholds while the board is powered and running. All changes persist only until power cycle unless written to OTP memory.

Can the EVKT-MP2733 evaluate both charging and OTG boost modes?

Yes - the kit fully supports dual-mode operation: buck charging (up to 4.5A at 1.35MHz) and boost OTG (up to 3.0A at 4.8–5.5V). The GUI displays real-time mode status, and hardware jumpers allow manual selection of default startup mode (charger or OTG).

Is battery temperature monitoring implemented on the EVKT-MP2733?

Yes - the MP2733 IC on the EV2733-QC-00A board integrates an NTC-based battery temperature monitor with configurable JEITA thresholds. The GUI displays raw ADC readings and allows setting high/low temperature limits that trigger charge suspension or thermal regulation.

What happens to I2C settings after powering down the EVKT-MP2733?

All I2C register modifications are volatile and reset to factory defaults upon power loss. To retain settings across cycles, users must write them to OTP memory using the GUI's "Write to OTP" function - which permanently stores values like charge voltage, input current limit, and OTG voltage.

Does the EVKT-MP2733 require external drivers for Windows compatibility?

Yes - the EVKT-USBI2C-02 interface requires the USBXpress driver (v4.0.0.0 or newer). Windows 10 may auto-install an incompatible legacy driver; users must manually install the correct 32-bit or 64-bit USBXpressInstaller executable from the MPS website before connecting the interface.