Monolithic Power Systems Inc. EV2392-TL-00A

Overview

EV2392-TL-00A from Monolithic Power Systems is a fully assembled evaluation board for the MP2392GTL synchronous step-down converter IC, demonstrating 2A continuous output at 3.3V from 4.2–24V input, operating at 650kHz with constant-on-time control and integrated 110mΩ/45mΩ MOSFETs. It supports pre-bias startup, power-good indication, and full protection including OCP, SCP, UVP, and thermal shutdown.

For engineers reviewing the EV2392-TL-00A datasheet, EV2392-TL-00A pinout, EV2392-TL-00A application, or EV2392-TL-00A equivalent, this board enables rapid validation of MP2392GTL performance in compact DC/DC designs requiring fast transient response, high efficiency across 0.01–2A load range, and minimal external component count.

Technical Context

The EV2392-TL-00A implements the MP2392GTL's constant-on-time (COT) control architecture to deliver <100µs load transient recovery and tight ±1% output regulation without external compensation. Its SOT583-packaged controller integrates high- and low-side MOSFETs, enabling synchronous rectification and eliminating external diode losses.

Board-level design incorporates a 4.7µH shielded inductor (Wurth 744311470), 22µF/25V and 22µF/16V ceramic output capacitors, soft-start programming via R2/R3, and PG signal conditioning through R8. Input ripple is suppressed using C1 (22µF/25V) and C1A (0.1µF/25V) in parallel.

Key Specifications

Availability

EV2392-TL-00A is available at Aetrix Electronics and suitable for game console power rails, digital set-top box DC/DC conversion, flat-panel display logic supplies, and other applications requiring stable component supply, quick-turn prototyping, and production-ready reference validation.

Supply support for EV2392-TL-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 analog semiconductor company specializing in high-performance power management ICs, with over two decades of innovation in DC/DC converters, LED drivers, and motor drivers.

The MP2392 product line targets space-constrained, high-efficiency point-of-load applications in consumer electronics and industrial systems, emphasizing integration, light-load efficiency, and robust protection without external components.

FAQ

What input voltage range is validated on the EV2392-TL-00A?

The board is characterized across 4.2V to 24V input, with test data explicitly provided at 5V, 12V, 19V, and 24V. Full functionality-including startup, regulation, and protection-is confirmed within this range using the onboard 4.7µH inductor and specified capacitor set.

Can the output voltage be adjusted to values other than 3.3V?

Yes - the MP2392GTL supports adjustable output via external resistor divider on the FB pin. The EV2392-TL-00A uses fixed 3.3V feedback (R2=13kΩ, R3=20kΩ), but replacing R2/R3 allows outputs from 0.6V to VIN×0.8, per the MP2392GTL datasheet's feedback equation.

Does the board support enable and power-good functions?

Yes - EN is accessible via test point and JP1 header; applying >1.3V enables regulation. PG is routed to a test point and requires a 3.3V pull-up (R8) to indicate valid VOUT. Both signals are fully functional and demonstrated in startup/shutdown waveforms on page 4–5 of the reference document.

What is the maximum achievable efficiency and at what conditions?

Peak efficiency reaches 95% at 12V_IN/3.3V_OUT/1A load, as shown in the efficiency plot on page 2. At 2A, efficiency remains ≥90% for VIN = 12V and ≥85% for VIN = 19V, enabled by low-R_DS(on) internal MOSFETs (110mΩ/45mΩ) and synchronous operation.

Is pre-bias startup supported, and how is it verified?

Yes - the MP2392GTL supports pre-bias startup, and the EV2392-TL-00A demonstrates clean output ramp-up without reverse current or oscillation when VOUT is pre-charged, as shown in the "Startup through Input Voltage" waveforms (page 3) with I_OUT = 0A and 2A.

What external components must be changed to operate at 5V output?

To set VOUT = 5V, replace R2 (13kΩ) with 20.5kΩ and R3 (20kΩ) with 30.1kΩ to maintain the 0.6V FB reference ratio. No inductor or capacitor changes are needed for 5V/2A operation, as the 4.7µH/7A inductor and 22µF output caps remain within safe RMS/peak current and ripple voltage limits.