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Article: DC/DC-converter Spice model speeds simulation.
- Article from:
- EDN
- Article date:
- October 22, 1998
- Author:
CopyrightCOPYRIGHT 1998 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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A dc/dc-converter macro model provides fast and accurate simulation of any fixed-frequency converter. By replacing the oscillator with a stable element the model provides simulation speeds more that 100 times higher that an equivalent oscillator in transient-mode simulation.
DC/DC converters are notoriously difficult to simulate as component models in Spice because of the inherent instability of oscillator circuits in computer simulation. All too often, Spice settles into a static mode in which the circuit no longer oscillates, or it takes so long to converge between time iterations that the simulation is useless.
For a designer of dc/dc converters, these ...