Technical Features
September 2018
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Figure 1: The Qorvo SiC FET – a ‘cascode’ of a Si-MOSFET and SiC JFET
The performance of wide band-gap (WBG) semiconductor switches such as silicon carbide cascode FETs (‘SiC FET’ henceforth) [1] (Figure 1) and SiC MOSFETs is closely tied to its package. At the pure technology level, nanosecond switching speed and low specific on-resistance result in very low losses, allowing much
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Date:
05/30/2023
Figure 3: LiDAR car
Gallium nitride(GaN)-on-silicon low voltage power devices have enabled many new applications since commercial availability began in 2010. New markets, such as light detection and ranging (LiDAR), envelope tracking, and wireless power, emerged due to the superior switching speed of GaN. These new applications ha
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Date:
09/29/2018
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Figure1. LTM4622(A) Can Be Mounted on the Underside of a PCB
Many communications systems are powered via a 48V backplane. This voltage is normally stepped down to a lower intermediate bus voltage, typically to either 12V, 5V or even lower, in order to power the racks of boards within the system. However, most of the sub-circuits or ICs on these boards are required to op
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Date:
09/29/2018
Figure 1. Logic “0” to logic “1”, then back to logic “0”
In modern communication systems, information is digitised, coded to logic levels “1” and “0” and often further encoded into complex modulation schemes such as Pulse Amplitude Modulation (PAM) or Quadrature Amplitude Modulation (QAM). Integrity of the information at the received end can be critical, so
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Date:
09/04/2018
Figure 1: DC/DC converter connection.
The power system technologies of modern electronic equipment are facing extreme challenges due to the need for an increase in the power efficiency of the systems, especially devices powered by a battery. The main system block involved in power conversion and delivery is the DC-DC converter, which converts DC po
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Date:
09/04/2018
Figure 1: IEC61000 Selection Descriptions
When choosing a power supply, if an engineer had only to consider volts and amps, cooling requirements, size, and regulatory certifications, their job would be easy as there are many available options from which to choose. However, designers of test and measurement equipment must consider other important parameters. El
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Date:
09/04/2018
Silicone oil has been used to cool transformers since PCBs were found to be harmful to humans and the environment, but are there better alternatives now?
Glancing back to the 1970s, those of us in the power sector can remember when Polychlorinated Biphenyls (PCBs)were the cooling liquid of choice for trans
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Date:
09/04/2018
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