Monolithic Power Systems Inc. EV8847-D-00A

Overview

EV8847-D-00A from Monolithic Power Systems is a 6A synchronous step-down switcher evaluation board built around the MP8847GD IC, featuring I²C programmable output voltage (0.6V–1.235V in 5mV steps), 2.7V–6V input range, and QFN-2mm×3mm package. It delivers high efficiency across load conditions with factory-adjustable switching frequency (0.85–2.2MHz) and supports processor core supply applications.

For engineers reviewing the EV8847-D-00A datasheet, EV8847-D-00A pinout, EV8847-D-00A application, or EV8847-D-00A equivalent, this board enables rapid validation of MP8847-based power delivery designs-especially for dynamic voltage scaling, low-noise SoC core rails, and I²C-controlled point-of-load regulation where fast transient response and soft-start sequencing are critical.

Technical Context

The EV8847-D-00A implements a complete reference design for the MP8847 synchronous buck converter, integrating internal 35mΩ high-side and 15mΩ low-side MOSFETs, 1ms internal soft-start, and Power Good indicator. It uses a 0.47µH shielded inductor rated for 6.8A IR and 14.5A ISAT, with four 22µF X5R ceramic output capacitors.

Test conditions are standardized at VIN = 5V, VOUT = 0.95V, TA = 25°C, enabling repeatable efficiency and transient performance benchmarking. The board supports I²C interface operation up to 3.4Mbps for real-time voltage slew rate, frequency, and power-saving mode configuration.

Key Specifications

Availability

EV8847-D-00A is available at Aetrix Electronics and suitable for processor core supply validation, embedded SoC power architecture prototyping, and I²C-configurable DC/DC development requiring stable component supply and documented test data.

Supply support for EV8847-D-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 design centers in the US, China, and Taiwan, and global distribution through authorized partners.

The MP8847 product line targets high-efficiency, space-constrained point-of-load applications-specifically optimized for mobile, wearable, and ultra-thin computing platforms requiring dynamic voltage control and minimal external components.

FAQ

What is the primary purpose of the EV8847-D-00A evaluation board?

This board is a fully assembled and tested reference design for the MP8847 synchronous buck converter. It enables engineers to validate electrical performance-including efficiency, transient response, and I²C programmability-under real-world conditions before integrating the IC into custom PCBs. All critical components, including the 0.47µH inductor and four 22µF output capacitors, match the recommended layout and BOM.

Does the EV8847-D-00A support adjustable switching frequency?

Yes-the underlying MP8847 IC supports factory-set switching frequencies from 0.85MHz to 2.2MHz, and this setting is fixed on the EV8847-D-00A board per its Rev.1.0 configuration. Frequency selection is not user-modifiable on the board itself but is determined during IC programming prior to assembly.

Can the output voltage be changed dynamically during operation?

Yes-via the onboard I²C interface, the output voltage can be adjusted on-the-fly from 0.6V to 1.235V in precise 5mV increments. This capability is verified in the test results section using standard I²C commands, supporting use cases like DVFS in application processors.

What protection features are implemented and how are they verified?

The board inherits the MP8847's current overload and thermal shutdown protections. These are validated through controlled overcurrent stress tests and thermal imaging under full 6A load, with automatic recovery behavior confirmed per the IC's datasheet timing specifications.

Is the EV8847-D-00A RoHS-compliant and lead-free?

Yes-all components on the board, including the MP8847GD IC, Murata capacitors, and Würth inductor, are lead-free and comply with the RoHS directive. MPS confirms green status for the MP8847 family on its official Quality Assurance page.

How is Power Good functionality accessed on this board?

The PG (Power Good) signal is routed to a dedicated test point (TP1) and is asserted when VOUT reaches 90% of target voltage within regulation tolerance. Its timing-aligned with the 1ms internal soft-start-is documented in the EVB test waveforms on page 4 of the reference document.