Monolithic Power Systems Inc. EV1476-TF-00A

Overview

EV1476-TF-00A from Monolithic Power Systems is an evaluation board designed to demonstrate the MP1476GTF synchronous step-down converter IC, supporting 12V input, 3.3V/2A output, 800kHz switching, and operating across 4.2–18V input range. It implements constant-on-time control with internal 130mΩ/54mΩ MOSFETs, thermal shutdown, OCP, UVP, and soft-start for compact DC/DC power delivery in space-constrained embedded systems.

For engineers reviewing the EV1476-TF-00A datasheet, EV1476-TF-00A pinout, EV1476-TF-00A application, or EV1476-TF-00A equivalent, this board enables rapid validation of MP1476-based 2A buck regulator designs-especially for security cameras, set-top boxes, and flat-panel displays requiring fast transient response, high efficiency at light load, and minimal external components.

Technical Context

The EV1476-TF-00A implements the MP1476GTF IC in a fully assembled, tested layout with 4.7µH inductor, input/output capacitors, feedback resistors preset for 3.3V output, and EN/PG test points. It operates at fixed 800kHz frequency with constant-on-time (COT) control, delivering tight regulation and sub-10µs load-step response under 12V input.

Board-level features include accessible VIN, VOUT, GND, EN, and PG terminals; solder jumpers for output voltage adjustment (0.8V–18V range); and thermal relief pads aligned with the SOT563 package footprint. No external compensation is required due to COT architecture and integrated MOSFETs.

Key Specifications

Availability

EV1476-TF-00A is available at Aetrix Electronics and suitable for security camera power modules, digital set-top box DC/DC stages, and flat-panel display auxiliary supplies requiring stable component supply, pre-validated layout, and rapid prototyping capability.

Supply support for EV1476-TF-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 analog and power ICs, with core expertise in DC/DC conversion, LED drivers, and motor control solutions.

The MP1476 product line targets compact, high-efficiency buck converters for consumer and industrial edge devices where board area, light-load efficiency, and fast transient response are critical system constraints.

FAQ

What input voltage range is supported by the EV1476-TF-00A board?

The board supports 4.2V to 18V input per the MP1476GTF IC specification. Tested performance data (efficiency, regulation, thermal rise) is provided at 12V input, but operation across the full range is verified with appropriate input capacitance and thermal management.

Can the output voltage be adjusted, and how?

Yes. The board includes solder jumpers and resistor pads to reconfigure the FB divider network. With R1 = 10kΩ and R2 = 10.2kΩ, it delivers 3.3V; replacing R2 with 18.2kΩ yields 5V. Minimum output is 0.8V, limited by the MP1476's internal reference.

Does the board include enable and power-good signals?

Yes. The EN pin accepts 1.3V–18V logic-high to activate regulation; below 1V disables the converter. PG (power-good) is an open-drain output pulled high via 10kΩ on-board, asserting after output reaches 90% of target and remaining active during normal operation.

What is the maximum achievable output current under continuous operation?

2A continuous is validated at +25°C ambient with the stock 4.7µH shielded inductor and default layout. Derating is required above +60°C case temperature; thermal imaging shows 45°C rise at 2A/12V→3.3V, confirming safe operation within SOT563 thermal limits.

Are schematic and PCB layout files available?

Yes. MPS provides the full schematic, BOM, Gerber files, and assembly drawings for EV1476-TF-00A in Rev. 1.0 documentation (document ID EV1476-TF-00A-DS), available for download from the official MPS website under the MP1476 product page.

Is the board RoHS-compliant and lead-free?

Yes. All components on EV1476-TF-00A meet RoHS Directive 2011/65/EU and are lead-free and halogen-free, consistent with MPS corporate compliance policy and verified in the official MPS Green Status report.