Monolithic Power Systems Inc. EV7722DF-00C

Overview

EV7722DF-00C from Monolithic Power Systems is an evaluation board for the MP7722DF stereo Class D audio amplifier IC, delivering 2×20W into 4Ω loads at 24V supply, featuring AAM™ variable-frequency modulation, single-ended capacitor-divider output architecture, and integrated mute/standby control - used to validate audio subsystems in flat-panel TVs and multimedia computers.

For engineers reviewing the EV7722DF-00C datasheet, EV7722DF-00C pinout, EV7722DF-00C application, or EV7722DF-00C equivalent, this board enables rapid functional validation of MP7722DF-based 20W stereo Class D amplifier designs under real-world thermal, EMI, and dynamic load conditions with configurable 12V/24V operation.

Technical Context

The EV7722DF-00C implements a complete reference design for the MP7722DF IC, which uses Analog Adaptive Modulation (AAM™) topology to achieve >90% efficiency and 0.08% THD+N at 1W/8Ω while operating from a single 9.5–24V supply. It supports both 12V and 24V configurations via component-level modifications.

Board-level features include dual RCA input jacks, banana jack speaker outputs, on-board enable switch, test points for SW1/SW2 node monitoring, and discrete protection circuitry using B130B Schottky diodes and BZT52C6V2S zeners - all built on a 8.9 cm × 6.1 cm PCB with TSSOP20F-mounted MP7722DF.

Key Specifications

Availability

EV7722DF-00C is available at Aetrix Electronics and suitable for flat-panel television audio subsystem validation, multimedia computer speaker driver qualification, and home stereo amplifier prototyping requiring stable component supply and documented reference design fidelity.

Supply support for EV7722DF-00C 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 Class D audio amplifiers.

The EV7722DF-00C belongs to MPS's audio evaluation board product line, designed specifically to accelerate development of compact, high-efficiency stereo audio amplifiers for consumer display and computing applications.

FAQ

What is the primary function of the EV7722DF-00C?

The EV7722DF-00C is a dedicated evaluation board for the MP7722DF stereo Class D audio amplifier IC. It provides a fully assembled, tested platform to verify electrical performance-including output power, THD+N, efficiency, and enable/standby behavior-under real-world supply and load conditions before integrating into end products.

Does the EV7722DF-00C support both 12V and 24V operation?

Yes - the board ships configured for 24V operation but supports 12V operation via documented component changes: replacing C6 (to 1.8nF), C15 (to 2.2nF), adjusting R10/R16 (from 20kΩ to 10kΩ), and removing R23, R26, and R31. These modifications align bias and feedback networks for stable 12V switching regulation.

What speaker impedances are supported?

The EV7722DF-00C supports 4Ω and 8Ω speakers, as specified in the MP7722DF datasheet and validated in the board's quick start guide. Output stage design and thermal layout are optimized for continuous 20W delivery into 4Ω loads at 24V, with derated power at 8Ω.

How is audio input connected?

Audio input is applied via two female RCA jacks (CN1 and CN2), labeled IN1 and IN2, accepting 0VRMS to 1VRMS line-level signals. Input coupling capacitors and resistive network match the MP7722DF's differential-input sensitivity and common-mode range per its datasheet interface requirements.

Is the MP7722DF IC socketed or soldered on the board?

The MP7722DF IC is permanently soldered in TSSOP20F package on the EV7722DF-00C board. It is not socketed - this ensures signal integrity and thermal reliability during high-power operation and eliminates contact-related failure modes during evaluation.

Are test points provided for critical nodes?

Yes - TP1 is designated for monitoring the EN (enable) signal, and SW1/SW2 switching nodes are accessible via dedicated pads per the schematic. These allow oscilloscope probing of gate drive waveforms, enable timing, and switching-node ringing without soldering or modification.