Monolithic Power Systems Inc. EV8040-N-00A

Overview

EV8040-N-00A from Monolithic Power Systems is an evaluation board for the MP8040 half-bridge power driver IC, supporting configurable stereo single-ended or mono full-bridge Class-D audio amplifier operation. It accepts 7.5–24V input, delivers up to 9A peak output current, and features integrated 0.1Ω N-channel MOSFETs in SOIC-8N package.

For engineers reviewing the EV8040-N-00A datasheet, EV8040-N-00A pinout, EV8040-N-00A application, or EV8040-N-00A equivalent, this board enables rapid validation of MP8040-based audio amplification, motor drive, and DC/DC converter designs with configurable topology, fault monitoring, and standby mode control.

Technical Context

The EV8040-N-00A implements dual MP8040 ICs - each a high-frequency (up to 1.2MHz), logic-level-driven half-bridge driver with internal UVP, thermal shutdown, and 30ns dead-time control. Board-level configuration via jumper and capacitor changes determines operating mode: stereo single-ended (IN_L/IN_R → SP1A/SP1B) or mono full-bridge (IN_L/IN_R → pins 2 & 3).

It provides dedicated signal routing for SHDN (active-low enable), FLT (open-drain fault indicator), DR (5V/1mA auxiliary supply), and GND-referenced analog inputs. All power paths use low-ESR electrolytic (1000µF/35V) and film (0.47µF/50V) capacitors, plus 10µH shielded inductors for output filtering.

Key Specifications

Availability

EV8040-N-00A is available at Aetrix Electronics and suitable for Class-D audio amplifier development, brushed DC motor control prototyping, and half-bridge DC/DC regulator evaluation requiring stable component supply and documented reference design support.

Supply support for EV8040-N-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, including DC/DC converters, LED drivers, motor drivers, and gate drivers.

The MP8040 product line targets high-efficiency, high-frequency switching applications such as Class-D audio amplifiers and compact motor drives - designed for integration into space-constrained, thermally sensitive systems.

FAQ

What is the primary function of the EV8040-N-00A evaluation board?

The EV8040-N-00A is a hardware platform for evaluating the MP8040 half-bridge power driver IC. It does not contain an audio codec or DAC; instead, it provides configured power stages, input interfaces, and protection circuitry to validate MP8040 performance in real-world Class-D amplifier or motor drive implementations.

How do I configure the board for full-bridge mono operation?

To configure full-bridge mode: short resistors R4, R7, and R9; remove capacitors C4 and C7; and install a 0.47µF capacitor at C12. Audio input connects to IN_L and IN_R, while the bridged output uses pins 2 and 3 - per Figure 1 in the official Rev. 1.0 documentation.

What does the FLT pin indicate, and how is it used?

The FLT pin is an open-drain output that pulls low during internal fault conditions - including overcurrent, overtemperature, or input undervoltage. It requires an external pull-up resistor and can directly interface with microcontroller GPIOs for real-time fault detection and system shutdown sequencing.

Can the DR pin power external circuitry, and what are its limits?

Yes - the DR pin supplies a regulated 5V output capable of sourcing up to 1mA. It is intended for biasing small-signal components like op-amps or logic level shifters near the board, but not for powering loads exceeding 1mA or requiring tight regulation.

Is the EV8040-N-00A RoHS-compliant and lead-free?

Yes - all components on the EV8040-N-00A board comply with RoHS directives. MPS confirms the MP8040DN ICs and passive components (capacitors, inductors, resistors) are lead-free and halogen-free, as stated in the Bill of Materials and MPS Quality Assurance documentation.

Does the board include audio input conditioning or only power-stage evaluation?

The board provides direct IN_L and IN_R terminals for differential or single-ended logic-level PWM inputs - no onboard analog-to-digital conversion, filtering, or amplification. Signal conditioning must be implemented externally; the board focuses exclusively on validating MP8040's switching behavior and thermal performance.