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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/24526

Title: An Integrated Segmented Gate Driver with Adjustable Driving Capability for Efficiency Optimization
Authors: Akhavan Fomani, Armin
Advisor: Ng, Wai Tung
Department: Electrical and Computer Engineering
Keywords: Gate Driver
Adjustable Driving Capability
Issue Date: 21-Jul-2010
Abstract: A novel gate driver design is proposed to improve the conversion efficiency of DC-DC converters. Conventional gate drivers provide a fixed gate driving strength (capability) over the entire output load range. However, it is demonstrated that to optimize the overall conversion efficiency, the driving capability of the gate driver circuit should be adjusted according to the loading condition. The proposed segmented gate driver consists of 8 parallel driver segments that can be turned on/off allowing the power consumption of the gate driver circuit to be dynamically adjusted. The post layout simulation results in high voltage TSMC 0.25µm CMOS process shows that up to 7% improvement in the efficiency can be achieved. Furthermore, in addition to efficiency improvements, a 60% reduction in the ringing and overshoot/undershoot was observed. An integrated segmented gate driver IC designed for AMSP35HV process was submitted for fabrication with the support from CMC.
URI: http://hdl.handle.net/1807/24526
Appears in Collections:Master
The Edward S. Rogers Sr. Department of Electrical & Computer Engineering - Master theses

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