Monolithic Power Systems Inc. EV4560DN-00A

Overview

EV4560DN-00A from Monolithic Power Systems is a fully assembled and tested evaluation board for the MP4560 synchronous step-down DC/DC converter IC, delivering 3.3V at up to 2A from an 8–55V input, operating at 500kHz switching frequency with integrated 250mΩ high-side MOSFET.

For engineers reviewing the EV4560DN-00A datasheet, EV4560DN-00A pinout, EV4560DN-00A application, or EV4560DN-00A equivalent, this board enables rapid validation of high-voltage buck conversion in automotive, industrial, and battery-powered systems using the MP4560DN controller IC.

Technical Context

The EV4560DN-00A implements current-mode control architecture via the MP4560DN IC, enabling fast transient response and simplified loop compensation. It supports adjustable output voltage (down to 0.8V) using external resistor dividers (R4/R6), and features internal soft-start to limit inrush current.

Input under-voltage lockout (UVLO) is set to 6V via R1/R2 divider (EN threshold = 1.2V), and enable functionality is provided via TTL-compatible EN pin (1.6V turn-on, 1.2V turn-off). The board uses a 10µH, 4.3A shielded SMD inductor (Toko D104C-#919AS-100M) and ceramic output capacitance optimized for 3.3V/2A operation.

Key Specifications

Availability

EV4560DN-00A is available at Aetrix Electronics and suitable for high-voltage power conversion, automotive subsystems, and industrial embedded power supply development requiring stable component supply and proven reference design validation.

Supply support for EV4560DN-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 core expertise in DC/DC conversion, LED drivers, and motor control solutions.

The MP4560 product line targets high-input-voltage buck regulation in space-constrained, thermally demanding applications-designed specifically for automotive infotainment, industrial PLCs, and battery-powered equipment where 8–55V input tolerance and 2A capability are critical.

FAQ

What is the primary function of the EV4560DN-00A?

The EV4560DN-00A is a dedicated evaluation board for the MP4560DN synchronous step-down regulator IC. It provides a ready-to-use hardware platform to validate 3.3V/2A power delivery from 8–55V inputs, including full signal access to EN, FB, COMP, BST, and SW pins for design characterization and loop tuning.

Can the output voltage be adjusted on this board?

Yes-the output voltage is adjustable from 0.8V using external resistors R4 and R6 per the formula VOUT = 0.8V × (1 + R4/R6). The board ships preset to 3.3V (R4 = 40.2kΩ, R6 = 124kΩ), and compensation components must be recalculated per the MP4560DN datasheet when changing VOUT.

What is the purpose of the EN pin and its voltage thresholds?

The EN pin enables digital on/off control of the MP4560DN. Driving EN ≥1.6V turns the regulator on; driving EN ≤1.2V shuts it down. This TTL-compatible interface allows microcontroller or system-level power sequencing, and also serves as the input to the UVLO circuit (preset to 6V via R1/R2).

Why is the EV4560DN-00A marked "Not Recommended for New Designs"?

MPS has superseded this board with EVBL4572-QB-00A, which evaluates the upgraded MP4572 - a pin-compatible successor offering improved efficiency, lower quiescent current, and enhanced thermal performance. EV4560DN-00A remains valid for legacy validation and MP4560DN qualification but is not supported for new product introductions.

Which components on the board are not populated?

C4, C7, C10, C11, D1, and D3 are marked "Not Stuffed" in the BOM. These positions accommodate optional input/output filtering, bootstrap capacitor redundancy, or external diode placement for specific test configurations-but are omitted in the default 3.3V/2A configuration to optimize cost and layout.

Does the board include thermal management provisions?

Yes-the MP4560DN SO-8 package includes an exposed thermal pad soldered to a dedicated copper pour on the PCB, and the 10µH inductor (Toko D104C-#919AS-100M) is rated for 4.3A saturation current. Efficiency measurements show >85% at 12V input/2A load, confirming adequate thermal design for continuous operation within spec.