Product:	New SPICE Library for Power Supply Designers
Price:	Price $395, quantity one, Available Immediately
Platform:	DOS, Windows, NT (x86, Digital Alpha, and MIPS), Macintosh, and Power Macintosh
Requirements:	IsSpice3 or IsSpice4 is required
Contacts:	Charles Hymowitz - Vice President intusoft   (310) 833-0710, FAX (310) 833-9658, 
	E-mail 74774.2023@compuserve.com


New SPICE Library Frees Power Supply Designers

Intusoft has introduced a new SPICE model library for power supply
designers.  It is the first SPICE library to contain a comprehensive
set of switching level models for Pulse Width Modulation (PWM) ICs. 
The new library represents a major breakthrough for SMPS designers. 
Previous models were based almost exclusively on state space average
models which don't show many important nonlinear effects.  The
library does include a unique "unified" state space PWM model which
works for AC, DC, and transient analyses in continuous and
discontinuous modes.  However, the switching level models give
designers a capability they have never had before; the ability to
plug in a model, representative of the actual IC, and simulate the
transient switching performance accurately and realistically.

Included are over 20 voltage and current-mode PWM IC models for parts
from Unitrode (UC184x series, UC152x series and UC182x series),
Linear Technology (LT124x series), Siliconix (Si9145), and Cherry
Semiconductor (CS322/324).  Some models are created with multiple
levels of complexity.  This allows the engineer to select the
appropriate model features of interest and thus control the
simulation efficiency.  The models utilize analog behavioral
elements, special Boolean logic elements unique to Intusoft's
IsSpice, and new HDL elements.  Together they greatly reduce the
model's simulation runtime, an important factor in SMPS analysis.

The library also includes SPICE models for nonlinear magnetic cores
(Magnetics MPP series and various European cores), transformers,
Power Mosfet drivers (IR2110, Teledyne TC42x series), motor
controller ICs (UC1637), and power factor correction ICs (UC1854).  A
total of over 400 models are provided.

The price of the library is $395.  The library is available
immediately.  The models are compatible with Intusoft's native analog
and mixed mode SPICE 3 based simulator, as well as existing ICAP/4
systems for DOS, NEC, Windows, Macintosh and the Power Macintosh.  A
FREE issue of the Intusoft Newsletter is available from Intusoft
describing the models in detail.