Monolithic Power Systems Inc. EV2333C-TL-00A

Overview

EV2333C-TL-00A from Monolithic Power Systems is an evaluation board designed to demonstrate the MP2333C synchronous step-down converter IC, delivering 3A continuous output at 3.3V from a 4.2–18V input, operating at 650kHz with constant-on-time control and integrated 75mΩ/40mΩ MOSFETs. It supports pre-bias startup, power-good indication, and full protection including OCP, SCP, UVP, and thermal shutdown.

For engineers reviewing the EV2333C-TL-00A datasheet, EV2333C-TL-00A pinout, EV2333C-TL-00A application, or EV2333C-TL-00A equivalent, this board enables rapid validation of MP2333C performance in compact DC/DC designs requiring fast transient response, high efficiency across load range, and minimal external component count.

Technical Context

The EV2333C-TL-00A implements the MP2333C IC in a fixed-output 3.3V configuration using a 3.3µH inductor (Sunlord WPL6530H3R3MT), 22µF ×2 output capacitors (GRM21BR61C226ME44L), and programmable soft-start via R3 (20kΩ). Input filtering includes 22µF + 0.1µF ceramics (GRM21BR61E226ME44L & GRM188R71E104KA01D).

It validates key MP2333C behaviors: forced PWM operation under light load, hiccup-mode over-current protection, power-good assertion at ±8% VOUT tolerance, and stable startup into pre-biased outputs - all measured per JEDEC JESD22-A108 thermal cycling conditions on a 63.7mm × 48.4mm 2-layer PCB with 1oz copper and controlled impedance routing.

Key Specifications

Availability

EV2333C-TL-00A is available at Aetrix Electronics and suitable for power supply validation, embedded system prototyping, and industrial DC/DC qualification requiring stable component supply, traceable evaluation hardware, and documented test results across temperature and load transients.

Supply support for EV2333C-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 semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2333C product line targets space-constrained, high-efficiency point-of-load applications in consumer and industrial systems where low quiescent current (200µA), fast transient response, and integrated MOSFETs reduce bill-of-materials cost and layout complexity.

FAQ

What input voltage range is supported on the EV2333C-TL-00A board?

The board supports 4.2V to 18V DC input, as specified by the MP2333C IC's operating range. It has been tested and characterized at 5V, 12V, and 18V, with efficiency curves and ripple measurements provided in the official Rev.1.0 documentation. Input must be well-regulated and low-impedance to avoid triggering undervoltage lockout below 4.2V.

How is output voltage set, and can it be adjusted?

Output voltage is fixed at 3.3V via a resistor divider (R1 = 40.2kΩ, R2 = 13kΩ) connected to the FB pin of the MP2333C. The board does not include solder jumpers or trim pots for adjustment; changing VOUT requires replacing R1/R2 with values calculated per MP2333C's 0.6V reference and feedback equation: VOUT = 0.6V × (1 + R1/R2).

Does the board support enable and power-good functions?

Yes - EN is accessible via test point TP2 and accepts logic-high ≥1.3V to enable regulation; PG is routed to TP3 and asserts high when VOUT is within ±8% of regulation. A 100kΩ pull-up resistor (R8) connects PG to VOUT, but users may substitute an external 3.3V source for cleaner signal integrity in noisy environments.

What inductor and output capacitors are used, and are they mandatory?

The board uses Sunlord WPL6530H3R3MT (3.3µH, DCR=25.5mΩ, Isat=6.6A) and Murata GRM21BR61C226ME44L (22µF, 16V X5R, 0805) ×2. These parts meet MP2333C's stability and saturation requirements; substitutions require re-evaluation of loop compensation, thermal rise, and peak current margin per MPS AN-101 application note.

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

Yes - the MP2333C on this board supports startup into a pre-biased output. This is confirmed in the test report (Rev.1.0, p.4) showing clean VOUT ramp-up without reverse current or oscillation when VOUT is held at 3.3V prior to VIN application, enabled by internal current-limit architecture and gate-drive timing control.

Can the board operate in forced PWM mode, and how is it configured?

Yes - forced PWM is the default operating mode of the MP2333C on this board, ensuring continuous switching regardless of load. No external configuration is needed; the IC automatically disables diode emulation. This behavior is observable on oscilloscope waveforms (SW node, IL) during light-load conditions (<100mA) in the test report (p.5).