Monolithic Power Systems Inc. EV3213DH-00B

Overview

EV3213DH-00B from Monolithic Power Systems is a fully assembled and tested evaluation board for the MP3213 synchronous boost converter IC, configured to deliver digitally switchable 13.2V or 19.5V at up to 0.5A from a 12V input, with user-selectable 700kHz/1.3MHz switching frequency and output disconnect control via EN1 - designed specifically for Low Noise Block (LNB) power supply validation in satellite receiver systems.

For engineers reviewing the EV3213DH-00B datasheet, EV3213DH-00B pinout, EV3213DH-00B application, or EV3213DH-00B equivalent, this board enables rapid functional verification of MP3213-based LNB supplies, including voltage selection logic (EN2), enable sequencing (EN1), overload protection behavior, and high-frequency layout trade-offs for compact RF front-end power design.

Technical Context

The EV3213DH-00B implements the MP3213DH - a fixed-frequency, current-mode synchronous boost controller with integrated 3.5A MOSFET switch - operating at either 700kHz or 1.3MHz (selected via JP1 jumper). It uses external resistive feedback (R1/R2A/R2B) to set two precise output voltages: 13.2V when EN2 = low, and 19.5V when EN2 = high.

Output disconnect is achieved by pulling EN1 low, disabling the regulator and isolating VOUT from VIN. Protection includes cycle-by-cycle current limiting, thermal shutdown, and automatic recovery from overload/short-circuit events - validated in test waveforms showing VSW, IINDUCTOR, and VOUT transient response under load steps and fault conditions.

Key Specifications

Availability

EV3213DH-00B is available at Aetrix Electronics and suitable for satellite receiver development, LNB power architecture validation, and high-frequency DC-DC reference design requiring stable component supply and pre-validated layout practices.

Supply support for EV3213DH-00B 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 low-noise, high-efficiency power solutions for RF-sensitive applications - specifically engineered to meet stringent EMI, transient response, and thermal requirements of satellite LNB power stages.

FAQ

What input voltage range does the EV3213DH-00B support?

The board is designed for a fixed 12V input only, as specified in its electrical characteristics and validated in all performance curves. Operation outside 12V ±5% is not supported and may cause improper regulation or protection activation due to the MP3213DH's internal reference and current-sense thresholds being calibrated for 12V operation.

How do I select between 13.2V and 19.5V output?

Drive the EN2 signal low (0V–0.8V) for 13.2V output or high (2.0V–6V) for 19.5V output using an external logic source. The board does not include on-board level-shifting; EN2 must be actively driven within the MP3213DH's valid logic voltage range, referenced to GND.

Does the board provide short-circuit protection?

Yes - the MP3213DH IC implements cycle-by-cycle current limiting and thermal shutdown. Test waveforms confirm automatic foldback and recovery during sustained short-circuit events at both 13.2V and 19.5V outputs, with no damage observed after repeated fault cycling under 12V input.

Can I change the switching frequency after assembly?

Yes - JP1 is a physical 2-pin jumper that selects between 700kHz (L position) and 1.3MHz (H position). Switching frequency changes require power-down, jumper repositioning, and optional inductor value adjustment (L1 = 10µH optimized for 700kHz; higher frequencies may benefit from lower inductance).

Is the board RoHS-compliant and lead-free?

Yes - all components listed in the Bill of Materials (Rev. 1.0) are RoHS-compliant and use lead-free terminations, consistent with MPS's standard manufacturing practice as confirmed in the official MP3213DH datasheet and Monolithic Power Systems' compliance documentation.

What is the purpose of EN1, and how should it be used?

EN1 controls global enable/disable of the MP3213DH. Pull EN1 high (1.5V–6V) to activate regulation; pull low (<0.4V) to disconnect VOUT from VIN and halt switching. This provides safe hot-swap capability and system-level power sequencing control in multi-rail satellite receiver designs.