Jürgen Schäfer

Multi domain behavioral models of smart-power ICs for design integration in automotive applications

A modeling methodology for behavioral models of smart-power IC is presented. These components typically consist of a few hundred to thousand transistors, which can be separated into digital (logic) and analog (electro-thermal) model equations. The preferred simulation tool in the automotive industry is presently SABER (MAST/sup (R)/ language). The resulting models enable system level simulations of the mechatronic application in a few minutes CPU time, compared to hours with a transistor level simulation of the IC alone.

Integrated Mechatronic Design and Simulation of a Door Soft Close Automatic with Behavioral Models of Smart Power ICs

Based on the example of a door soft close automatic the potential of integrated system simulation in the automotive systems development is demonstrated. The modeling approach is covering several physical domains like mechanics, electromagnetics and semiconductor physics. With adequate simplifying methods a time efficient model is generated, which allows system optimization in the concept phase. Time consuming redesigns can thus be minimized.

Minimum hardware serial PID regulator for high efficiency, low power digital DC-DC converters

This paper focuses on the minimum hardware implementation of a digital compensator for digitally controlled dc-dc converters. A novel serial PID architecture is presented that, together with the adopted representation of controller parameters, minimizes the area requirements while allowing the representation of a wide range of parameter values. Large multipliers and wide look-up tables are thus avoided, making this architecture well suited to applications where small size and low power consumption are required. Analysis of the serial PID compensator and simulation results are presented for a multi-mode buck converter for automotive applications, highlighting the advantages of the proposed architecture.