System and method for maintaining soft switching condition in a gradient coil driver circuit
US9389288B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Oct 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3854
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one embodiment, a system includes a gradient coil driver configured to supply electrical signals to a gradient coil of a magnetic resonance imaging system. The gradient coil driver includes an electronic circuit. The electronic circuit includes a first H-bridge circuit electrically coupled to a power source. The first H-bridge includes a plurality of metal-oxide-semiconductor field-effect transistor (MOSFET) switches; and a plurality of diodes electrically coupled in parallel with each MOSFET switch. Each diode of the plurality of diodes is configured to conduct current to cause zero voltage potential across a source and a drain of one of the plurality of MOSFET switches. The first H-bridge also includes a load configured to regulate currents flowing through each of the plurality of diodes and each MOSFET switch of the plurality of MOSFET switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.