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arXiv · 2401.10555

A high frequency radiation hardened DC/DC-converter with low volume air core inductor

Jeremias Kampkötter·Michael Karagounis·Rainer Kokozinski
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Abstract

The hfrh-buck (high frequency radiation hardened-buck) is a radiation hardened DC/DC-converter operating at a high switching frequency of 100MHz with a small air core inductor of 22nH. To ensure a high radiation dose, the circuit is designed with core transistors of a 65nm TSMC technology. By stacking the transistors of the power stage, the converter can be supplied with a voltage of up to 4.8V. Stable operation can be achieved at an output voltage of 1.2V with a maximum load current of 1A. The prototype demonstrates the ability to power parallel connected hybrid-pixel modules in the innermost layers.

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Jeremias Kampkötter, Michael Karagounis, Rainer Kokozinski. 2024-01-19. A high frequency radiation hardened DC/DC-converter with low volume air core inductor. https://doi.org/10.1088/1748-0221%2F19%2F01%2Fc01052

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