Monolithic Power Systems Inc. EV3213DH-00A

Overview

EV3213DH-00A from Monolithic Power Systems is an evaluation board for the MP3213 synchronous boost converter IC, configured to deliver a regulated 12V/0.5A output from a 5V input using a 3.5A internal switch, with user-selectable 700kHz or 1.3MHz switching frequency and adjustable output up to 22V via feedback resistor tuning.

For engineers reviewing the EV3213DH-00A datasheet, EV3213DH-00A pinout, EV3213DH-00A application, or EV3213DH-00A equivalent, this board enables rapid validation of MP3213 performance in compact DC-DC conversion designs requiring low-input-voltage startup (2.5V), high efficiency across load range, and thermal management via exposed-pad PCB heatsink.

Technical Context

The EV3213DH-00A implements the MP3213's fixed-frequency current-mode control architecture with integrated 3.5A MOSFET switch, enabling stable regulation from 2.5V–10V input to 12V output at 500mA. Frequency selection (700kHz/L or 1.3MHz/H) is controlled by JP1 jumper position on the board.

It integrates full power stage components-4.7µH inductor (Sumida CDRH8D43-4R7NC), MBRA340T3 Schottky diode, and ceramic input/output capacitors-and supports output voltage adjustment via R1 (86.6kΩ default) using the formula VOUT = VFB × (1 + R1/R2), where VFB = 1.25V and R2 = 10kΩ.

Key Specifications

Availability

EV3213DH-00A is available at Aetrix Electronics and suitable for LCD display power supplies, handheld computing peripherals, and digital camera auxiliary rails requiring stable component supply, fast design iteration, and verified reference performance.

Supply support for EV3213DH-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, motor drivers, and LED lighting controllers.

The MP3213 product line targets space-constrained, battery-powered applications needing high-efficiency step-up conversion from single-cell Li-ion or USB sources, emphasizing low quiescent current, small external component count, and robust thermal behavior.

FAQ

What input voltage range is supported by the EV3213DH-00A?

The board operates with a 2.5V to 10V DC input, verified per the MP3213 datasheet and schematic. At 5V input, it delivers 12V/0.5A; higher output voltages require proportionally higher input (e.g., ≥7V for 22V output). Input must be current-limited and ripple-controlled to avoid EN pin false triggering.

How do I change the output voltage from 12V to another value?

Replace R1 (default 86.6kΩ) using the formula VOUT = 1.25V × (1 + R1/10kΩ), where R2 = 10kΩ is fixed. For example, 15V requires R1 ≈ 110kΩ (1% standard value). Ensure all feedback resistors use 0603 package and ≤1% tolerance for accuracy within ±2%.

Which switching frequency should I select - 700kHz or 1.3MHz?

Select 700kHz for lower EMI and higher light-load efficiency; choose 1.3MHz for smaller passive components (inductor/capacitors) and tighter layout constraints. Note that inductor value must match frequency: B1015AS-4R7N (4.7µH) is optimized for 1.3MHz; alternate inductors may be needed for 700kHz operation.

Is the MP3213 enabled by default on this board?

Yes - the EN pin is pulled high internally via onboard circuitry, so the MP3213 starts switching automatically when valid input voltage (≥2.5V) is applied. To disable, externally pull EN low (≤0.4V) using a logic signal or switch; no additional components are required for enable control.

Can I use this board to evaluate transient response or efficiency under varying loads?

Yes - the board includes test points for VIN, VOUT, SW node, and GND, and supports direct oscilloscope probing. Efficiency vs. load curves (up to 1000mA) are published in the Rev. 1.1 document. For accurate measurement, use Kelvin connections and ensure ambient temperature remains ≤25°C during testing.

Does the board include protection features like overcurrent or thermal shutdown?

The MP3213 IC itself provides cycle-by-cycle overcurrent protection and thermal shutdown (150°C junction limit), which are active on this board. No external fault reporting pins are routed, but abnormal behavior (output droop, intermittent restart) under overload indicates activation of these internal protections.