Monolithic Power Systems Inc. EV8715-L-00A

Overview

EV8715-L-00A from Monolithic Power Systems is an evaluation board for the MP8715DL synchronous step-down converter, designed to demonstrate 4A continuous output at 1.2V from 5–21V input with 500kHz fixed-frequency operation, 100% duty cycle support, and integrated 120mΩ/50mΩ MOSFETs. It enables rapid validation of power delivery in µP/FPGA core supplies and telecom equipment.

For engineers reviewing the EV8715-L-00A datasheet, EV8715-L-00A pinout, EV8715-L-00A application, or EV8715-L-00A equivalent, this board provides verified test waveforms (load/line regulation, startup, transient response), full BOM with Murata/Yageo/TOKO components, and configurable EN/SYNC/PG/SS interfaces for system-level integration and layout reference.

Technical Context

The EV8715-L-00A implements the MP8715DL IC in a fully assembled, tested 14-pin QFN layout with ceramic-only output filtering (three 22µF X7R 1210 caps), 1.8µH shielded inductor (TOKO D104C-#919AS-1R8N), and precision feedback network (R1=4.99k, R2=10k) setting VOUT=1.2V. Input ripple suppression uses four 0.1µF X7R 0603 capacitors.

It supports external frequency synchronization up to 2MHz via the EN/SYNC pin, delivers power-good indication (PG) with 5V logic output, and includes soft-start control (SS pin) with 34kΩ resistor. Thermal performance is validated per JEDEC JESD51-7 with exposed pad soldered to internal copper planes.

Key Specifications

Availability

EV8715-L-00A is available at Aetrix Electronics and suitable for FPGA core supply validation, telecom power subsystem prototyping, and digital set-top box DC-DC design requiring stable component supply and production-ready layout reference.

Supply support for EV8715-L-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 over two decades of expertise in DC-DC conversion, motor drivers, and LED lighting controllers.

The MP8715 product line targets high-density, high-efficiency point-of-load regulation for computing, networking, and consumer electronics where 100% duty cycle operation and ceramic-capacitor compatibility are critical.

FAQ

What input voltage range is supported on the EV8715-L-00A?

The board supports 5V to 21V DC input, aligned with the MP8715DL's 4.5–21V specification. Testing confirms stable 1.2V/4A output across this range, including full-load operation at minimum 5V input with 100% duty cycle enabled.

How is output voltage set, and can it be adjusted?

VOUT is set to 1.2V by default using a 4.99kΩ/10kΩ resistor divider on the FB pin. It can be adjusted from 0.8V to VIN by changing R1 and R2 values per the MP8715DL datasheet equation: VOUT = 0.8V × (1 + R1/R2).

Does the board support external clock synchronization?

Yes - the EN/SYNC pin accepts logic-level square-wave signals up to 2MHz. When driven, the MP8715DL locks its 500kHz switching frequency to the external clock, enabling noise-sensitive system timing alignment without modifying the board.

What thermal management features does the EV8715-L-00A include?

The board uses the MP8715DL's 14-pin QFN package with exposed thermal pad, fully soldered to inner-layer copper planes per the reference layout. Measured junction-to-ambient thermal resistance is ≤35°C/W under 4A load at 25°C ambient.

Is soft-start configurable, and how is it implemented?

Yes - soft-start time is set externally via capacitor on the SS pin. The default 10nF (C7) yields ~5ms ramp-up; increasing capacitance linearly extends soft-start duration, preventing inrush current during power-on.

Can the power-good signal drive an FPGA or microcontroller reset input directly?

Yes - the PG output is a 5V-tolerant, push-pull digital signal with 100ms delay after regulation. Its 5V logic high and rail-to-rail swing meet standard MCU/FPGA reset input thresholds without level-shifting.