Monolithic Power Systems Inc. EV2332C-TL-00A

Overview

EV2332C-TL-00A from Monolithic Power Systems is an evaluation board designed to demonstrate the MP2332C synchronous step-down converter IC, supporting 4.2–18V input, 3.3V/2A output, 650kHz switching, and constant-on-time control with power-good indication and thermal shutdown.

For engineers reviewing the EV2332C-TL-00A datasheet, EV2332C-TL-00A pinout, EV2332C-TL-00A application, or EV2332C-TL-00A equivalent, this board enables rapid validation of MP2332C performance in compact DC/DC designs requiring fast transient response, pre-bias startup, and hiccup-mode over-current protection.

Technical Context

The EV2332C-TL-00A implements the MP2332C IC in a fully assembled, tested layout with 4.7µH shielded inductor (Sunlord WPL6530H4R7MT), input/output ceramic filtering (22µF ×2 at output), and precision feedback resistors (R1=40.2kΩ, R2=13kΩ) setting VOUT=3.3V. It supports forced PWM and programmable soft-start via external capacitor on SS pin.

Test results confirm stable operation across 0–2A load with <20mVpp output ripple at full load (VIN=12V), 1ms startup time, and short-circuit recovery within 2ms. Power-good (PG) signal asserts high when VOUT is within ±7.5% regulation window and deasserts during fault or undervoltage.

Key Specifications

Availability

EV2332C-TL-00A is available at Aetrix Electronics and suitable for game console power rails, digital set-top box DC/DC stages, flat-panel TV local regulators, and industrial FPGA core supply designs requiring stable component supply and rapid design-in support.

Supply support for EV2332C-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 MP2332C product line targets space-constrained, high-efficiency point-of-load applications in consumer electronics and computing, emphasizing low quiescent current (200µA), fast transient response, and minimal external component count.

FAQ

What input voltage range is validated on the EV2332C-TL-00A board?

The board is validated across 4.2V to 18V input, with published efficiency curves and transient waveforms at 5V, 12V, and 18V. Input capacitors (C1, C1A, C2, C2A) are rated for 25V/16V respectively, supporting full-range operation without derating.

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

VOUT is set to 3.3V by the R1 (40.2kΩ) and R2 (13kΩ) feedback divider. The MP2332C supports adjustable output from 1.8V to 12V using the formula VOUT = 0.8V × (1 + R1/R2); replacement resistors must maintain 1% tolerance and ≤100kΩ total resistance for stability.

Does the board support enable and power-good functions?

Yes - EN is accessible via test point and supports logic-level control (ON >1.3V, OFF <1V). PG is routed to a test point and requires a 3.3V pull-up (R8 = 100kΩ) to assert high when VOUT is within ±7.5% of regulation; deasserts during faults or UVLO.

What inductor is used, and why is its DCR specified?

The board uses Sunlord WPL6530H4R7MT (4.7µH, DCR = 36.5mΩ, Isat = 5.3A). DCR directly impacts conduction loss and thermal rise; the value matches MP2332C's internal current sensing threshold and ensures accurate OCP triggering under high-current transients.

Can the board operate with pre-biased output capacitors?

Yes - the MP2332C supports pre-bias startup, verified on this board. When VOUT is pre-charged, the IC soft-starts without reverse current flow, preventing output voltage collapse or inrush damage - essential for multi-rail systems with staggered power sequencing.

Is thermal performance characterized on the EV2332C-TL-00A?

Yes - thermal shutdown is triggered at ~150°C junction temperature. At 2A/12V input, the MP2332C case temperature remains ≤65°C with 200LFM airflow, confirmed via IR thermography in the Rev.1.0 test report (page 4).

What is the purpose of the NS (no-stuff) positions like C1B and R6?

C1B and R6 are no-stuff locations reserved for optional input filtering (C1B) and loop compensation (R6). They allow users to add external RC networks for EMI reduction or stability tuning in custom applications without modifying the base PCB layout.