Monolithic Power Systems Inc. EV24830-L-00A

Overview

EV24830-L-00A from Monolithic Power Systems is an evaluation board for the MP24830HL white LED driver IC, configured in buck-boost topology to drive up to 10 LEDs at 1 A with input range 8–24 V and programmable 200 kHz switching frequency. It supports both analog and PWM dimming via a single control pin and includes full protection: thermal shutdown, cycle-by-cycle current limiting, open-string detection, and output short-circuit protection.

For engineers reviewing the EV24830-L-00A datasheet, EV24830-L-00A pinout, EV24830-L-00A application, or EV24830-L-00A equivalent, this board enables rapid validation of MP24830-based LED lighting designs-including automotive front/rear lighting, LCD backlighting, and industrial illumination-under real-world load, line, and dimming conditions.

Technical Context

The EV24830-L-00A implements the MP24830HL's current-mode buck-boost architecture with integrated 60 V/80 V N-MOSFETs (SUD23N06 and Si4436DY), 22 μH power inductor, and 22 μF/68 μF output capacitance. It operates across 8–24 V input while maintaining regulated 1 A LED current up to 30 V output voltage limit.

Dimming is implemented via dedicated EN/DIM pin accepting 0.7–2 V analog control or 100 Hz–20 kHz PWM signals; reference ground separation enables direct positive-to-negative enable/dimming logic. Protection features are hardware-asserted and verified per test waveforms in the Rev. 1.1 documentation.

Key Specifications

Availability

EV24830-L-00A is available at Aetrix Electronics and suitable for automotive LED headlamp validation, LCD TV backlight prototyping, and industrial panel lighting development requiring stable component supply and fast-turn evaluation capability.

Supply support for EV24830-L-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP24830 product line targets high-efficiency, high-reliability LED lighting systems requiring wide-input buck-boost regulation, dual dimming, and robust fault protection - especially where space-constrained PCB layout and thermal resilience are critical.

FAQ

What is the maximum LED string voltage supported by the EV24830-L-00A?

The board enforces a 30 V output voltage protection threshold (VOVP), verified in test data. With typical white LED forward voltage ~2.8–3.5 V, it safely drives up to 10-series LEDs (≤28 V nominal), staying within the 30 V clamp. Exceeding this triggers immediate output shutdown.

Can the switching frequency be adjusted, and how?

Yes - frequency is set by resistor R6 (100 kΩ) on the board, yielding 200 kHz per MP24830HL datasheet equations. Replacing R6 with other values recalculates f_S using f_S = 1.1×10⁶ / R_RT (Ω); recommended range is 100 kHz–2 MHz per device specification.

Does the board support both analog and PWM dimming simultaneously?

No - the EN/DIM pin accepts either analog voltage (0.7–2 V) or PWM signal (5 V amplitude, 100 Hz–20 kHz), but not both concurrently. The internal circuitry detects mode automatically based on signal characteristics; mixing modes may cause undefined behavior or flicker.

What is the purpose of the separate input reference ground (GND) pin?

This pin isolates the control logic ground from power ground, enabling clean enable/dimming signals when the board interfaces with systems using positive-to-negative logic translation or isolated microcontrollers - preventing ground loop noise from disrupting dimming accuracy or enable timing.

Is the EV24830-L-00A RoHS-compliant and lead-free?

Yes - all components on the board, including the MP24830HL IC, passives, and MOSFETs, are lead-free and halogen-free, fully compliant with EU RoHS Directive 2011/65/EU. MPS confirms green status on its official Quality Assurance portal.

How is open-string protection verified on this board?

Open-string detection is implemented via feedback monitoring of the current-sense resistor (R11, 3 mΩ). When no LED current flows, the driver halts switching and asserts fault condition - confirmed in waveform tests (Page 5, "Open LED Protection") showing immediate VSW cessation and IL decay to zero within 10 μs.