2 kW/100 V RF demonstration board for 3 T MRI based on the STAC4932B

The STEVAL-IMR002V1 demonstration board is based on the new generation of high voltage DMOS products housed in the STAC® air cavity package and capable of delivering an output power up to 1.2 kW for industrial, scientific, and medical applications such as 1.5 T and 3 T magnetic resonance imaging (MRI).

This new air-cavity technology now enables lower thermal resistance, lower weight, and reduced cost compared to devices in ceramic packages.

The STEVAL-IMR002V1 demonstration board implements the design of a 2 kW-100 V, 123 MHz Class AB peak power amplifier (PPA) for 3 Tesla MRI applications.

It uses double push-pull bolt-down devices, two STAC4932B - N-channel MOSFETs, capable of exceeding 2000 W @ 123 MHz with large signal gain of 19 dB in Class AB and a drain efficiency of 60%.

It almost doubles the output power of previous amplifiers using MOSFET transistors in standard ceramic packages.

Key Features

  • Output power: 2 kW
  • Supply voltage: 100 V
  • Frequency: 123 MHz
  • Power gain: 19 dB
  • Efficiency: 60%
  • RoHS compliant





Description Version Size
DB1502 DB1502: 2 kW/100 V RF demonstration board for 3 T MRI based on the STAC4932B 1.1 286 KB


Board Manufacturing Specifications
Description Version Size
STEVAL-IMR002V1 gerber files 1.0 56 KB
Bill of Materials
Description Version Size
Schematic Pack
Description Version Size
STEVAL-IMR002V1 schematics 1.0 151 KB


Description Version Size
Evaluation products license agreement 1.4 128 KB


型号 Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-IMR002V1 STAC4932B NRND - 1 NEC EAR99 - MORE INFO No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors


型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-IMR002V1 NRNDCARDIndustrialEcopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.