Monolithic Power Systems Inc. EV2313-J-00A

Overview

EV2313-J-00A from Monolithic Power Systems is an evaluation board for the MP2313GJ synchronous step-down converter, configured for 3.3V/1A output from a 19V input, operating at fixed 2MHz switching frequency with TSOT23-8-packaged IC, supporting power-save mode via AAM pin and featuring cycle-by-cycle over-current protection and thermal shutdown.

For engineers reviewing the EV2313-J-00A datasheet, EV2313-J-00A pinout, EV2313-J-00A application, or EV2313-J-00A equivalent, this board enables rapid validation of high-efficiency DC/DC conversion in space-constrained I/O power rails, notebook subsystems, and flat-panel display bias supplies under real-world transient and thermal conditions.

Technical Context

The EV2313-J-00A implements the MP2313GJ's current-mode control architecture to deliver fast load transient response and stable regulation across 4.5–24V input range. Its fixed 2MHz operation minimizes external component size while maintaining >90% peak efficiency at 3.3V/1A output.

Board-level design integrates dual low-R_DS(ON) MOSFETs (110mΩ high-side / 50mΩ low-side), internal soft-start, hiccup-mode short-circuit protection, and adjustable output down to 0.8V via resistor divider-enabling direct testing of dynamic performance and protection behavior without custom layout.

Key Specifications

Availability

EV2313-J-00A is available at Aetrix Electronics and suitable for notebook system I/O power validation, flat-panel TV monitor bias supply prototyping, and digital set-top box subsystem power testing requiring stable component supply and repeatable lab evaluation capability.

Supply support for EV2313-J-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 MP2313 product line delivers high-frequency, high-efficiency synchronous buck converters in ultra-small packages for space- and thermally constrained portable and consumer electronics applications.

FAQ

What input voltage range does the EV2313-J-00A support?

The board supports 4.5V to 24V DC input, validated per MP2313GJ specifications. Test results in the reference document confirm stable 3.3V/1A output at 19V input; operation below 4.5V may disable regulation, and exceeding 24V risks IC damage.

How is output voltage set on this evaluation board?

Output is fixed at 3.3V using R2 (6.34kΩ) and R3 (40.2kΩ) in a resistor divider network tied to the FB pin. The ratio sets V_OUT = 0.8V × (1 + R3/R2) ≈ 3.3V; replacing R2 or R3 allows adjustment down to 0.8V minimum.

Does the board support power-save mode (PSM) or forced PWM operation?

Yes - the AAM pin is routed to a test point: floating or pulling high enables forced PWM mode; pulling low (≤0.8V) activates power-save mode for improved light-load efficiency, as specified in the MP2313GJ datasheet.

What protection features are implemented and tested on this board?

All MP2313GJ protections are active and verified: cycle-by-cycle over-current triggers immediate shutdown; short-circuit forces hiccup-mode restart; thermal shutdown engages above 150°C junction temperature - all observable via waveform capture on the board.

Can the EN pin be used to sequence power with other rails?

Yes - the EN pin has a 1.6V turn-on threshold and 0.9V turn-off threshold, with hysteresis. It accepts standard logic-level signals and supports precise power-up/down sequencing when driven by microcontroller GPIO or dedicated supervisor ICs.

What external components are included on the EV2313-J-00A board?

The board includes all critical components: 1μH power inductor (Wurth 744777001), two 22μF output capacitors (Murata GRM31CR61E226KE15L/GRM31CR71A226KE15L), five 0.1μF/22pF bypass caps, and six precision resistors for feedback, enable, and AAM configuration.