Monolithic Power Systems Inc. EV3314-R-00A

Overview

EV3314-R-00A from Monolithic Power Systems is a fully assembled evaluation board for the MP3314 6-channel boost WLED driver IC, designed to demonstrate LCD panel backlighting in tablets and notebooks. It supports 3V–30V input, delivers up to 43V output, regulates six independent LED strings at 60mA each, and features I²C-configurable PWM dimming, spread spectrum, and comprehensive protection including OVP, OCP, OTP, LED open/short detection.

For engineers reviewing the EV3314-R-00A datasheet, EV3314-R-00A pinout, EV3314-R-00A application, or EV3314-R-00A equivalent, this board enables rapid validation of MP3314-based backlight systems with configurable switching frequency (625–1250 kHz), analog/PWM/mixed dimming modes, phase-shifted channel control, and real-time register tuning via MPS Ebench.

Technical Context

The EV3314-R-00A implements the MP3314's peak current mode boost topology with integrated 6-channel current sinks, enabling simultaneous drive of six independent WLED strings. Its I²C interface configures all key operating parameters-including f_SW, dimming method, duty cycle, phase shift between channels, spread spectrum modulation, and protection thresholds-without external component changes.

Board-level design incorporates the MPS MPL-SE5040-100 inductor (10 µH, 3.2 A), Schottky diode B160-13-F, and optimized ceramic capacitor network (C1–C9) to support stable 1250 kHz operation and low-noise LED current regulation under dynamic load and thermal conditions.

Key Specifications

Availability

EV3314-R-00A is available at Aetrix Electronics and suitable for LCD backlight development, display module qualification, and power management reference design validation requiring stable component supply, pre-validated layout, and production-ready firmware integration paths.

Supply support for EV3314-R-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, LED drivers, motor drivers, and battery management solutions.

The MP3314 product line targets energy-efficient, compact LCD backlighting for portable displays, emphasizing high integration, low EMI, and flexible digital control for thin-form-factor consumer electronics.

FAQ

What is the required input voltage range to operate the EV3314-R-00A?

The board operates from 3 V to 30 V DC applied across VIN and PGND terminals. This matches the MP3314's specified input range and supports common sources such as USB-C PD adapters, 2S/3S Li-ion batteries, and industrial 12 V/24 V rails without external regulators.

Does the EV3314-R-00A support hardware PWM dimming in addition to I²C control?

Yes - the board provides a dedicated PWM terminal that accepts external 200 Hz–20 kHz PWM signals for brightness control. When used, it overrides I²C dimming settings; both methods can be combined in mixed-dimming mode for enhanced flicker suppression and resolution.

Which inductor is used on the EV3314-R-00A, and why is it critical?

The board uses the MPS MPL-SE5040-100 (10 µH, 3.2 A saturation current, 56 mΩ DCR). Its low profile, tight tolerance, and optimized core material ensure stable 1250 kHz operation, minimal output ripple, and efficient thermal performance during full-load 6-string operation.

How are LED string faults detected and handled on this evaluation board?

The underlying MP3314 detects LED open and short conditions per channel using internal current-sense comparators and responds with fault flag assertion, automatic shutdown of affected channels, and optional I²C interrupt reporting - all validated on the EV3314-R-00A with recovery waveforms documented in the test report.

Is the EV3314-R-00A compatible with MPS Ebench software?

Yes - the board is fully supported by MPS Ebench, which provides GUI-based register configuration, real-time monitoring of LED currents and voltages, and one-click loading of preset profiles for dimming modes, spread spectrum, and protection thresholds.

Can the EV3314-R-00A drive more than six LED strings?

No - the board implements only the MP3314's native six-channel architecture. Each of the six LED+ outputs (LED1–LED6) is independently controllable but not expandable; multi-board synchronization requires external timing coordination via I²C or PWM master-slave routing.