Monolithic Power Systems Inc. EV2562DS-00A

Overview

EV2562DS-00A from Monolithic Power Systems is a fully assembled and tested evaluation board for the MP2562 synchronous step-down DC/DC converter IC, supporting 8–50V input, delivering regulated 3.3V at up to 1A output, with fixed 500kHz switching frequency and integrated 460mΩ high-side MOSFET.

For engineers reviewing the EV2562DS-00A datasheet, EV2562DS-00A pinout, EV2562DS-00A application, or EV2562DS-00A equivalent, this board enables rapid validation of high-voltage buck conversion in industrial power systems, automotive subsystems, and battery-powered equipment requiring stable 3.3V rail generation from wide-input sources.

Technical Context

The EV2562DS-00A implements current-mode control architecture using the MP2562 SO-8 IC, enabling fast transient response and cycle-by-cycle overcurrent protection. It incorporates internal soft-start (2ms typical), UVLO with preset 6V turn-on threshold via R1/R2 divider, and precision 0.8V feedback reference.

Output voltage is set by resistor divider R4 (40.2kΩ) and R6 (124kΩ), yielding 3.3V per V_OUT = 0.8V × (1 + R4/R6). Compensation network components (C5, C6, R5) are optimized for 3.3V/1A operation with the 10µH power inductor (Toko D104-#919AS-100M) and 22µF output capacitor (C8).

Key Specifications

Availability

EV2562DS-00A is available at Aetrix Electronics and suitable for industrial power systems, automotive subsystems, and battery-powered portable equipment requiring stable component supply and rapid prototyping of high-input-voltage DC/DC conversion.

Supply support for EV2562DS-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 across Asia and North America and global distribution infrastructure.

The MP2562 product line targets high-voltage, high-efficiency buck regulation in space-constrained applications, emphasizing integration (internal MOSFET), wide VIN range, and robust protection features for harsh environments.

FAQ

What input voltage range is supported by the EV2562DS-00A?

The board accepts 8V to 50V DC input, verified per its schematic and bill of materials-capacitors C1/C2 rated for 100V, inductor L1 rated for 4.3A saturation, and MP2562 IC specified for 4.5V–50V operation. Operation below 8V triggers UVLO; above 50V risks component overstress.

How is the 3.3V output voltage set and can it be adjusted?

Output is set by R4 (40.2kΩ) and R6 (124kΩ) forming a resistor divider that references the MP2562's 0.8V FB pin. V_OUT = 0.8V × (1 + R4/R6) = 3.3V. To adjust, replace R6 per datasheet equation; recalculate compensation (R5, C5, C6) and verify inductor saturation current for new V_OUT/I_OUT.

Does the EV2562DS-00A support programmable switching frequency?

Yes-the MP2562 IC supports frequency programming from 200kHz to 4MHz via an external resistor on the FREQ pin. On this board, the FREQ pin (Pin 3) is unconnected; users may add a resistor to ground to set frequency, following MP2562 datasheet guidelines and revalidating loop stability.

What protection features are implemented on the evaluation board?

The board inherits MP2562's built-in protections: cycle-by-cycle overcurrent limiting, thermal shutdown (150°C), input under-voltage lockout (UVLO, preset to 6V), and internal soft-start (2ms). No external fault reporting or latch-off circuitry is included-protection is automatic and self-recovering.

Can the EN pin be used for sequencing or remote shutdown?

Yes-EN pin (Pin 1) accepts TTL/CMOS-compatible logic: >1.6V enables regulation, <1.2V disables it with controlled discharge of the output capacitor. This allows precise power sequencing with other rails or microcontroller-driven shutdown, with no external pull-up required due to internal bias.

Is the board RoHS-compliant and what is its PCB stack-up?

Per MPS documentation and BOM part numbers (e.g., Murata GRM, TDK C-series, Yageo RC), all active and passive components are RoHS-3 compliant. The board is a 2-layer PCB (unspecified thickness); layout files confirm top/bottom copper layers with silkscreen and solder mask, optimized for thermal dissipation and EMI control at 500kHz.