Implementing the IGBT Model into a
Circuit Simulator
Usually a netlist is employed in a circuit simulator such as
Saber to describe an electrical circuit. Each component of the
circuit is defined by a model template with the component
terminal connection and the model parameters values. While
Saber libraries provide some standard component models, the
models can be generated by implementing the model equations
in a defined Saber template. Electrical component
models of IGBT are defined by the current through each
component element as a function of component variables,
such as terminal and internal node voltages and explicitly
defined variables. The circuit simulator uses the Kirchhoff
current law to solve for electrical component variables such
that the total current into each node is equal to zero, while
satisfying the explicitly defined component variables needed to
describe the state of the device.
of IGBT by preventing the gate voltage from reaching the
threshold voltage.