[Power Device] Switching circuit design techniques using power devices such as GaN and SiC

Developing a design environment considering the influence of high frequency

To realize a design that suits the actual measurement with a switching circuit that uses a power device having a rise time as short as 10 nsec (equivalent to a frequency of 100 MHz), the influence of frequency components up to 10 times, or approximately 1 GHz, must be considered. In addition to creating a layout model with frequency characteristics that take into account parasitic components taking advantage of electromagnetic (EM) field analysis instead of SPICE analysis using a lumped parameter model, it is important to move quickly to a design environment that uses high-frequency circuit design tools.

Selecting the standard of high-frequency circuit design

Leading designers of high-speed switching circuits are moving towards the usage of a de facto standard high-frequency simulation tool. This practice may be unknown in the conventional low-speed switching circuit market. It is important to select an industry-standard tool to avoid failure risks when the design moves into the actual build environment.

Acquiring an accurate device model

A model that accurately simulates the behavior of a device is important, but the reality is that deviation from the actual operation is still large. While waiting for a better model from the device manufacturers, some pioneering circuit designers are working voluntarily on the creation and verification of a device model that matches actual measurements. Device modeling is a challenging but necessary task in order for circuit designers to gain market share. Some companies have chosen to outsource device modeling.

Curve tracer for circuit designers

With B1506A, even a circuit designer not familiar with device modeling can easily acquire data such as IV, CV, and Qg, that are necessary for modeling just by following the work procedure presented.

A high-precision layout model that is readily accessible

Momentum, a 2.5D EM tool, allows you to model a board layout with frequency characteristics. It can be used for various types of board data. 

Verification of simulation probability is also available

Keysight provides a one-stop solution for modeling, simulation and actual measurements.

You can also verify the probability and validity of each result. 

Device model extraction service 

Once you have measured the device characteristics, leave the rest to us. You will have the device model you want without having to spend time to learn modeling knowledge.

Achieving simulation that considers high frequency

With its ease of use and powerful capabilities, Keysight’s Advanced Design System (ADS) has garnered a global share of over 70% among high frequency circuit designers, enabling design simulations that match actual measurements.

Together with the major players in the market

Keysight continues to collaborate with major players to drive better design and test solutions based on evolving circuit designs and challenges.