US Patent Application 17727153. CURRENT SENSING IN NON-CMOS SEMICONDUCTOR TECHNOLOGY FOR POWER CONVERSION APPLICATIONS simplified abstract
CURRENT SENSING IN NON-CMOS SEMICONDUCTOR TECHNOLOGY FOR POWER CONVERSION APPLICATIONS
Organization Name
Inventor(s)
Nachiket Desai of Portland OR (US)
Harish K. Krishnamurthy of Beaverton OR (US)
CURRENT SENSING IN NON-CMOS SEMICONDUCTOR TECHNOLOGY FOR POWER CONVERSION APPLICATIONS - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 17727153 Titled 'CURRENT SENSING IN NON-CMOS SEMICONDUCTOR TECHNOLOGY FOR POWER CONVERSION APPLICATIONS'
Simplified Explanation
The abstract describes a current sensor for a power converter, specifically a buck converter. The power converter is made using a high bandgap semiconductor die, while the current sensor is made using both the same die and a silicon die. The current sensor consists of a sense transistor on the same die and a feedback circuit on the silicon die. The feedback circuit controls the voltage of the sense transistor to ensure it is biased correctly based on the bias of a switching transistor in the power converter. The current of the sense transistor can then be processed using techniques like averaging or sampling.
Original Abstract Submitted
Embodiments herein relate to a current sensor for a power converter such as a buck converter. The power converter is fabricated on a high bandgap semiconductor die while the current sensor includes a portion on the same die and a portion on a silicon die. The portion on the same die includes a sense transistor, while the portion on the silicon die includes a feedback circuit for controlling a voltage of the sense transistor to ensure it is biased according to the bias of a switching transistor of the power converter. A current of the sense transistor can then be processed such as by an averaging or sampling process.
