El Segundo, CALIFORNIA, United States
El Segundo, CALIFORNIA, United States

The Navitas College of Public Safety is an Australian owned independent tertiary education provider of courses accredited by the Victorian Department of Education and Training. The current student population numbers around 500. The most popular degree offered by the institution is a Bachelor of Social Science in criminal justice.Navitas College of Public Safety was founded in 1990 as the Australian Institute of Public Safety . It has been part of the Navitas Group since July 2008. NCPS has built a reputation as a specialist educator in safety, security and criminal justice. Wikipedia.

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Patent
Navitas | Date: 2017-02-13

GaN-based half bridge power conversion circuits employ control, support and logic functions that are monolithically integrated on the same devices as the power transistors. In some embodiments a low side GaN device communicates through one or more level shift circuits with a high side GaN device. Both the high side and the low side devices may have one or more integrated control, support and logic functions. Some devices employ electro-static discharge circuits and features formed within the GaN-based devices to improve the reliability and performance of the half bridge power conversion circuits.


A DC-AC converter is disclosed. The DC-AC converter generates an output AC signal, and has an input DC-AC converter which generates a first AC signal, a transformer device which receives the first AC signal and generates a second AC signal, and a first bidirectional switch which selectively connects a first transformer output terminal and a first output terminal. The DC-AC converter also has a first capacitor which powers the first bidirectional switch, a first charging circuit which charges the first capacitor, and a second bidirectional which selectively conduct connects a second transformer output terminal and a second output terminal. The DC-AC converter also has a second capacitor which powers the second bidirectional switch, and a second charging circuit which charges the second capacitor. Each of the bidirectional switches includes series connected transistors between first and second input/output terminals, and a transistor driver which drives the transistors.


Patent
Navitas | Date: 2015-05-21

A method and apparatus is provided the battery sensor for a large-scale battery system. More specifically, the present disclosure relates to the architecture and measurement scheme for a high-accuracy battery voltage sensor based on a calibration scheme. The present disclosure also related to the architecture and measurement method for a cell-level current sensor to effectively and reliably manage a battery pack.


Patent
Navitas | Date: 2017-02-16

Electronic packages are formed from a generally planar leadframe having a plurality of leads coupled to a GaN-based semiconductor device, and are encased in an encapsulant. The plurality of leads are interdigitated and are at different voltage potentials


Patent
Navitas | Date: 2017-02-13

GaN-based half bridge power conversion circuits employ control, support and logic functions that are monolithically integrated on the same devices as the power transistors. In some embodiments, a low side GaN device communicates through one or more level shift circuits with a high side GaN device. Both the high side and the low side devices may have one or more integrated control, support and logic functions.


GaN-based half bridge power conversion circuits employ control, support and logic functions that are monolithically integrated on the same devices as the power transistors. In some embodiments a low side GaN device communicates through one or more level shift circuits with a high side GaN device. Various embodiments of level shift circuits and their inventive aspects are disclosed.


Patent
Navitas | Date: 2016-02-22

Leadless electronic packages for GaN-based half bridge power conversion circuits have low inductance internal and external connections, high thermal conductivity and a large separation between external connections for use in high voltage power conversion circuits. Some electronic packages employ L shaped power paths and internal low impedance die to die connections. Further embodiments employ an insulative substrate disposed within the electronic package for efficient power path routing and increased packaging density.


Patent
Navitas | Date: 2015-08-14

A gallium-nitride based power transistor is coupled to a voltage source that has transient overvoltage conditions exceeding the allowable withstanding voltage of the power transistor. An overvoltage protection circuit is coupled to the power transistor to temporarily turn on the power transistor during the overvoltage condition to protect the power transistor from overvoltage breakdown.


A control scheme and architecture for a power conversion circuit employs two bidirectional switches and a zero voltage switching (ZVS) scheme for the high-side switch. Methods of incorporating the control scheme into multiple power conversion circuit topologies are disclosed. Methods of device integration including co-packaging and monolithic fabrication are also disclosed.


Patent
Navitas | Date: 2016-01-26

A control scheme and architecture for a wireless electrical energy transmission circuit employs two solid-state switches and a zero voltage switching (ZVS) topology to power an antenna network. The switches drive the antenna network at its resonant frequency and simultaneously energize a separate resonant circuit that has a resonant frequency lower than the antenna circuit. The resonant circuit creates out of phase voltage and current waveforms that enable the switches to operate with (ZVS).

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