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Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Modeling and simulation of arbitrary ordered nonlinear chargepump phaselocked loops
 Institute of Electrical and Electronics Engineers IEEE: SCD 2011, IEEE Semiconductor Conference Dresden. Technology, Design, Packaging, Simulation and Test. CDROM : 2728 Sept. 2011, Dresden, International Conference, Workshop and Tabletop Exhibition New York, NY: IEEE, 2011 ISBN: 9781457704314 ISBN: 9781457704307 ISBN: 9781457704291 Art. 6068711 
 Semiconductor Conference <2011, Dresden> 

 English 
 Conference Paper 
 Fraunhofer ENAS () 
Abstract
The simulation of chargepump phaselocked loops (CPPLL) is a challenge within the design. The problem is related to the mixedsignal and nonlinear behavior as well as the existence of high and low frequency functional blocks. Here a methodology is presented for the efficient and accurate simulation and analysis of the transient characteristic. For this, nonidealities like deadzone, current/timing mismatches, leakage current and the nonlinear voltage controlled oscillator characteristic are considered. Moreover, the proposed technique is applied to CPPLL systems with arbitrary loop filters by using the solution of the analog parts of the differential equation system and by solving the phase equation of the system with regard to the switching instant of time of the phase and frequency detector.