Data brief

For further information contact your local STMicroelectronics sales office.

December 2011

Doc ID 022609 Rev 1

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STEVAL-IMR002V1

2 kW/100 V RF demonstration board for 3 T MRI

based on the STAC4932B

Features

Description

The STEVAL-IMR002V1 demonstration board is

based on the new generation of high voltage

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.

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