Monolithic Power Systems Inc. EV5505E-L-00A

Overview

EV5505E-L-00A from Monolithic Power Systems is an application evaluation board for the MP5505E energy storage and management IC, designed to demonstrate backup power delivery during input outage. It supports 3.3–5 V input, charges storage capacitors to 12 V, releases up to 4 A at 2.9 V hold-up voltage, and implements patented dv/dt-controlled bus startup and programmable voltage thresholds for SSD and HDD power hold-up.

For engineers reviewing the EV5505E-L-00A datasheet, EV5505E-L-00A pinout, EV5505E-L-00A application, or EV5505E-L-00A equivalent, this board enables rapid validation of MP5505E's energy pumping architecture, reverse-current blocking, thermal protection, and programmable release timing in real-world backup scenarios.

Technical Context

The EV5505E-L-00A board implements the full reference design for MP5505E, including its integrated 60 mΩ back-to-back MOSFET switch, 6 V bus clamping, and adjustable dv/dt slew rate control via external RC networks (R1/R2 for VRELEASE, R11/R12 for VSTRG). It validates the IC's patented charge-pump-based energy transfer that elevates input voltage to 12 V storage while minimizing capacitor size.

Test conditions confirm operation at VIN = 3.3 V, VSTRG = 12 V, VRELEASE = 2.9 V, L = 4.7 µH, and TA = +25 °C. Waveforms verify stable boost steady-state, controlled EN-charging transients, and 4 A sustained release current with 400 µs resolution under load step.

Key Specifications

Availability

EV5505E-L-00A is available at Aetrix Electronics and suitable for SSD power hold-up, HDD backup supply, and industrial controller UPS validation requiring stable component supply and repeatable test conditions.

Supply support for EV5505E-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 core expertise in DC/DC conversion, battery management, and energy storage solutions.

The MP5505E product line targets ultra-compact, high-efficiency backup power systems for storage devices, emphasizing minimized capacitor footprint and precise voltage-programmable hold-up behavior.

FAQ

What is the primary purpose of the EV5505E-L-00A evaluation board?

This board demonstrates the MP5505E IC's energy storage and release functionality, specifically validating its ability to charge a capacitor bank to 12 V during normal operation and deliver up to 4 A at 2.9 V during input failure-enabling seamless data preservation in SSDs and HDDs without external batteries.

Can the EV5505E-L-00A operate with a 3.3 V input source?

Yes. The board is validated at VIN = 3.3 V per official test reports, supporting direct integration with low-voltage storage interfaces. Its MP5505E IC operates across 3.3–5 V input, enabling compatibility with both 3.3 V SATA and 5 V M.2 host rails.

How is the release voltage set on this evaluation board?

VRELEASE is set using resistor divider R1 (10 kΩ) and R2 (4.02 kΩ), yielding 2.9 V per the formula VRELEASE = 0.801 V × (R1 + R2)/R2. This configuration matches the documented test condition and can be modified by replacing R1/R2 to adjust the discharge trigger point.

Does the board include thermal protection circuitry?

Yes. The underlying MP5505E IC integrates thermal shutdown protection, and the board layout includes thermal vias and copper pour under the QFN20 package to dissipate heat during 4 A release events, as verified in thermal imaging tests referenced in the application note.

Is reverse current blocking implemented on this board?

Yes. The MP5505E IC uses internal 60 mΩ back-to-back MOSFETs to block reverse current flow from the storage capacitor to the input rail, preventing uncontrolled discharge during input dropout-a key requirement for reliable hold-up in storage applications.