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New BSIM3 model aids high-voltage IC design

Posted: 14 Apr 2004 ?? ?Print Version ?Bookmark and Share

Keywords:silvaco international? ic design tool suite? lcd driver? tft driver? power management ic?

Silvaco International has rolled out a High-Voltage IC Design tool suite for products such as LCD drivers, TFT drivers, and power management ICs. At the heart of the suite is a new BSIM3 level-88 Spice model that offers additional parameters for such effects as self-heating and asymmetric behavior.

For the most part, the suite pulls together current Silvaco offerings, including the Scholar schematic editor, SmartSpice circuit simulator, Expert layout editor, and Guardian design rule checker. It comes with foundry-verified process design kits (PDKs) and development services.

The major new technology in the suite, said Ken Brock, VP of marketing at Silvaco, is the BSIM3 level-88 model. Brock said it's "unique in the industry for accurately modeling the behavior of high-voltage devices over large variations of temperature, voltage, and current."

Compared to traditional BSIM3 models, the new model has nine additional parameters that SmartSpice can use to model new physical effects. Of these, said Brock, the most important is self-heating. As a high-voltage transistor passes more current at higher voltages with a fixed ambient temperature, it becomes less efficient because of internal self-heating, Brock noted.

The BSIM3 level-88 model can also reflect asymmetry and bias, dependence of mobility degradation, sub-threshold slope and reverse short-channel effect, bias-dependent saturation velocity, asymmetry of parasitics, and forward and reverse modes of operation.

Other new technology, according to Brock, includes enhancements to the schematic editor, a more efficient implementation of Cadence Composer and Analog Artist for EDIF import, callbacks, and parameterized cells for schematic-driven layout.

Silvaco's High-Voltage IC Design suite is available now on Windows, Linux, and Sun platforms. List pricing for a front-end seat of Scholar and SmartSpice starts at $35,000.

- Richard Goering

EE Times





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