Monolithic Power Systems Inc. EV7752-F-00A

Overview

EV7752-F-00A from Monolithic Power Systems is an evaluation board for the MP7752GF, a 15W stereo BTL inductorless Class D audio amplifier IC operating from 5–18V single supply. It delivers 9.5W per channel into 8Ω at 12V with 90% efficiency, features PLIMIT-controlled output power scaling, and supports SE/differential inputs via jumper configuration.

For engineers reviewing the EV7752-F-00A datasheet, EV7752-F-00A pinout, EV7752-F-00A application, or EV7752-F-00A equivalent, this board enables rapid validation of MP7752-based audio subsystems in TV, active speaker, and home theater designs-particularly where compact inductorless layout, pop-free startup/shutdown, and adjustable gain/power limiting are required.

Technical Context

The EV7752-F-00A implements the MP7752GF's fixed-frequency, inductorless Class D architecture with integrated 240mΩ MOSFETs and Bridge-Tied Load (BTL) outputs. It includes on-board RC networks for InAbsence delay control, resistor dividers for PLIMIT voltage setting, and configurable gain jumpers (GAIN0/GAIN1) supporting 20–36dB gain range.

Signal routing supports both single-ended (JP1/JP2 shorted) and differential input modes. EMI suppression is achieved via integrated NFZ ferrite beads (FB1–FB6), and fault monitoring is accessible through FAULT pin breakout. The board uses 0603/0402/0805 passives and TSSOP-28 EP-mounted MP7752GF.

Key Specifications

Availability

EV7752-F-00A is available at Aetrix Electronics and suitable for TV audio subsystem validation, active speaker reference design, and home theater amplifier prototyping requiring stable component supply, traceable sourcing, and documented thermal/EMI behavior.

Supply support for EV7752-F-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 analog and mixed-signal semiconductor company specializing in high-efficiency power management and audio ICs, with global manufacturing and quality certifications including ISO 9001 and AEC-Q200 qualified products.

The MP7752 product line targets compact, high-fidelity audio amplification in space-constrained consumer electronics, integrating power stage, protection logic, and signal conditioning into a single TSSOP-28 EP package to eliminate external inductors and reduce PCB area by >40%.

FAQ

What input configurations does the EV7752-F-00A support?

The board supports both single-ended and differential audio inputs. By default, JP1 and JP2 are shorted for SE operation. To enable differential mode, remove those jumpers and connect balanced signals to IN1+/IN1− and IN2+/IN2−. Input impedance varies from 20 kΩ to 75 kΩ depending on GAIN0/GAIN1 settings.

How is output power limited on this evaluation board?

Power limiting is controlled via the PLIMIT pin using an external DC reference voltage. Default setting applies 2.75 V (½ AVCC) for ~10 W/channel at 12 V. Adjusting R2/R4 or shorting JP4 disables the limit. Table 1 in the reference document maps PLIMIT voltage to measured output power and peak-to-peak voltage.

Does the board include EMI mitigation components?

Yes - six NFZ-series ferrite beads (FB1–FB6) are placed on all four output lines (OUT1±, OUT2±) and power rails. FB1/FB2 are 180 Ω @ 100 MHz; FB3–FB6 are 600 Ω @ 100 MHz, specifically selected to suppress Class D switching noise above 20 MHz without degrading audio bandwidth.

What is the purpose of the InAbsence function and how is it configured?

InAbsence detects loss of input signal and triggers automatic shutdown after a user-defined delay. On this board, delay time is set by C8 (1 nF) and R12/R13 (10 kΩ each), yielding ~160 ms. Shorting JP5 disables the function entirely. This prevents pop noise during source switching or mute transitions in consumer audio systems.

Can the EV7752-F-00A operate from a 5 V supply?

Yes - the MP7752GF IC and board are rated for 5 V minimum supply. At 5 V, output power drops to ~1 W per channel into 8 Ω due to reduced rail voltage headroom. Full 15 W/channel requires ≥16 V supply and appropriate thermal management per the MP7752 datasheet derating curves.

Is the MP7752GF IC soldered to the board, and what is its package?

Yes - the MP7752GF is permanently mounted in a TSSOP-28 with exposed pad (EP) package (U1). Thermal vias beneath the EP connect to internal ground planes for enhanced heat dissipation. The board layout follows MPS-recommended footprint and solder stencil guidelines per MP7752 datasheet Section 9.