With optimized devices, engineers can produce better semiconductor products and reduce the time needed to reach volume production by decreasing the number of prototype wafers that need to be manufactured and characterized. Another benefit for fabless product engineers is the ability to suggest improvements in the manufacturing process to their chosen foundry to improve yield and performance.
Typical device types for each kind of material are:
- Silicon: LDMOS, IGBT, Bipolar, DMOSFET, Schottky Diode, Thyristor
- SiC: Diode, MOSFET, DMOSFET, IGBT
- GaN: Diode, Lateral HEMT, Vertical HEMT
Silvaco TCAD process and device modeling solutions allows users to virtually prototype realistic devices in 2D or 3D, and to explore device performance in DC, AC, and transient simulations. Additionally, the capability to pair physics-based TCAD devices with a surrounding SPICE circuit allows users to explore the performance of their devices in realistic circuits.
2D/3D Device Simulation
The drift-diffusion engine of TCAD device simulation allows users to explore device performance with physics accuracy. The designer can consider temperature effects and perform a mixed device-SPICE simulation using specific modules:
- The Giga module allows for device self-heating to be simulated. It self-consistently solves the temperature locally, considering the high current flows within the device.
- The Mixed Mode module allows users to take a physics-accurate TCAD device and use it in a SPICE simulation to see how the device performs in a larger circuit. Users can include parasitic, passive, and active circuit elements to simulate and optimize device performance.