Monolithic Power Systems Inc. EV8795-LE-00A

Overview

EV8795-LE-00A from Monolithic Power Systems is an evaluation board for the MP8795 synchronous step-down converter, designed to demonstrate 15A continuous output at 1V from 8–16V input, featuring adaptive constant-on-time control, selectable 600/800/1000kHz switching, and differential remote sensing - validated in telecom power delivery and server VR13-compliant point-of-load applications.

For engineers reviewing the EV8795-LE-00A datasheet, EV8795-LE-00A pinout, EV8795-LE-00A application, or EV8795-LE-00A equivalent, this board enables rapid validation of MP8795's transient response under pre-biased start-up, PSM/FCCM mode selection, VOUT tracking, and thermal performance up to 15A load with <1.5°C/W case-to-ambient rise.

Technical Context

The EV8795-LE-00A implements the MP8795 QFN-21 (3mm×4mm) IC in a fully assembled, tested layout with optimized power planes, 0.4μH shielded inductor (Wurth 744325040), and six parallel 47μF X5R output capacitors. It supports dual biasing schemes (internal or external 3.3V VCC) and includes configurable soft-start (1ms minimum), VOUT discharge, and PG clamping during fault conditions.

Board-level features include JP1-based fSW and light-load mode selection, R1/R2 voltage-divider programming for 0.6V reference-based VOUT adjustment, RCS-configurable current limit, and EN logic-compatible enable with 1.5V turn-on threshold - all verified per Rev. 1.2 test reports across -40°C to +125°C junction range.

Key Specifications

Availability

EV8795-LE-00A is available at Aetrix Electronics and suitable for telecom power subsystem validation, server point-of-load design verification, and networking equipment VRM qualification requiring stable component supply and full production-representative layout fidelity.

Supply support for EV8795-LE-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 over two decades of leadership in DC/DC converters, LED drivers, and motor controllers.

The EV8795-LE-00A belongs to MPS's evaluation board product line, engineered specifically to accelerate adoption of the MP8795 monolithic buck converter in high-current, high-efficiency computing and communications infrastructure.

FAQ

What input voltage range does the EV8795-LE-00A support out of the box?

The board operates from 8V to 16V without modification, using an internal resistor divider (R4/R6) to derive EN from VIN. Lower input voltages down to 2.7V are achievable by adjusting R4/R6 values or applying an external EN signal above 1.5V.

How is output voltage set on this evaluation board?

VOUT is set via resistive divider R1 (3.4kΩ) and R2 (4.99kΩ) connected to the FB pin, establishing a 1V output based on the MP8795's 0.6V internal reference. The board supports rework for other outputs between 0.6V and 90% of VIN using standard 1% film resistors.

Does the EV8795-LE-00A support pre-biased start-up?

Yes - the MP8795 IC on this board fully supports pre-biased start-up, as confirmed in test waveforms (Rev. 1.2, p.9). This allows safe powering of downstream circuits already holding residual voltage on VOUT, critical for hot-swap and multi-rail sequencing.

What switching frequency options are available, and how are they selected?

600kHz, 800kHz, and 1000kHz are selectable via jumper JP1, which also determines light-load operation mode (Pulse-Skip Mode or Forced Continuous Conduction Mode). Each setting configures both fSW and control behavior simultaneously.

Is remote sensing implemented on this evaluation board?

Yes - the board uses differential VOUT sense (VOSENSE/VIGNDSEN) routed directly to the MP8795's dedicated sense pins, enabling accurate regulation under high-current PCB trace IR drop, as specified in the MP8795 datasheet and validated in load regulation tests.

What thermal performance can be expected at full 15A load?

At 15A, 12V input, and 1V output, the board achieves ≤1.5°C/W case-to-ambient thermal resistance (measured per Rev. 1.2 test report, p.6), with peak case temperature rise under 25°C - enabled by 4-layer construction, exposed PGND, and optimized copper pour layout.