ST IMR002V1 User Manual

STEVAL-IMR002V1

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

Data brief

Features

■Output power: 2 kW

■Supply voltage: 100 V

■Frequency: 123 MHz

■Power gain: 19 dB

■Efficiency: 60%

■RoHS compliant

Description

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.

December 2011	Doc ID 022609 Rev 1	1/4
For further information contact your local STMicroelectronics sales office.		www.st.com

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