Monolithic Power Systems Inc. EV1720DQ-3-00A

Overview

EV1720DQ-3-00A from Monolithic Power Systems is an evaluation board for the MP1720DQ-003 mono Class-D audio amplifier IC, supporting 2W differential output into 4Ω at 5V supply, featuring low-EMI operation without external output filter, and configurable switching frequency (1.0–1.4 MHz). It enables rapid validation of audio performance in portable consumer devices.

For engineers reviewing the EV1720DQ-3-00A datasheet, EV1720DQ-3-00A pinout, EV1720DQ-3-00A application, or EV1720DQ-3-00A equivalent, this board provides verified test configurations for SE/differential input, FCC-compliant radiated emissions testing, clock mode selection via JP2/JP3, and direct FOUTP/FOUTN output access for audio analyzer interfacing.

Technical Context

The EV1720DQ-3-00A implements a BTL (bridge-tied load) Class-D topology using the MP1720DQ-003 IC in QFN10 package, with selectable 1.0 MHz (CLK=GND), 1.3 MHz (CLK=FLOAT), or externally clocked (0.5–1.4 MHz) operation. It supports both single-ended (3 Vpp max) and differential (6 Vpp max) analog inputs.

Board-level design includes integrated LC low-pass filtering components (33 nF, 15 µH, 0.15 µF) for audio performance testing, jumper-configurable shutdown (/SHDN) and clock mode, and dual-purpose terminals (FOUTP/FOUTN) for measurement-grade output access.

Key Specifications

Availability

EV1720DQ-3-00A is available at Aetrix Electronics and suitable for portable audio development, FCC emissions pre-compliance testing, and Class-D amplifier IC qualification requiring stable component supply and traceable reference hardware.

Supply support for EV1720DQ-3-00A 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 expertise in DC/DC converters, LED drivers, motor drivers, and audio amplifiers.

The MP1720 series targets ultra-low-EMI, battery-powered audio applications; the EV1720DQ-3-00A evaluation board was designed to accelerate validation of mono Class-D amplifier integration in space-constrained portable systems.

FAQ

What amplifier IC does the EV1720DQ-3-00A evaluate?

The EV1720DQ-3-00A evaluates the MP1720DQ-003 - a mono, BTL Class-D audio amplifier IC in QFN10 package. It also supports evaluation of MP1720DQ-006, MP1720DQ-009, MP1720DQ-012, and MP1720DQ-216 via IC replacement, as confirmed in the board's Quick Start Guide and Bill of Materials.

How is switching frequency configured on this board?

Switching frequency is set via jumper JP3: grounding CLK selects 1.0 MHz, leaving CLK floating selects 1.3 MHz, and applying an external clock signal (0.5–1.4 MHz) to CLK enables synchronous operation. This configuration is documented in Table 1 of the Rev. 1.0 user guide and verified in the schematic.

Does the board require external filtering for FCC compliance testing?

No - the EV1720DQ-3-00A passes FCC radiated emissions standards with a 24-inch cable and no external output filter, as explicitly stated in the Features section. The low-EMI architecture of the underlying MP1720DQ-003 IC enables this capability.

What are the recommended output connection points for audio measurement?

For audio performance testing, use FOUTP and FOUTN (labeled on bottom silk layer per Figure 6) as the differential output terminals. These pins provide direct access to the amplifier's bridge outputs, bypassing onboard test filters unless explicitly enabled for measurement.

Can the board operate with single-ended input?

Yes - the board supports single-ended input up to 3 Vpp, as specified in the Electrical Specifications table. Jumper JP1 must remain shunted for SE mode; removing the shunt configures the input for differential operation, per the Quick Start Guide.

Is the LC filter mandatory for normal operation?

No - the 33 nF / 15 µH / 0.15 µF LC filter is optional for normal operation and required only for standardized audio performance testing (e.g., THD+N, SNR), as noted in the "Notes" section of the Test BOM and Quick Start Guide.