Analysis of a charge-pump PLL: a new model

Paemel, M. Van

doi:10.1109/26.297861

Cited by 85 publications

(58 citation statements)

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“…The modified PFD model described in fig. 6 represents a simple possibility to include the non-linear characteristic of the dead-zone into the simulation model of equation (3) or into the event-driven modelling techniques (see Van Paemel, 1994)). …”

Section: Virtual Statesmentioning

confidence: 99%

Non-linear behaviour of charge-pump phase-locked loops

2010

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Abstract. The analysis of the mixed analogue and digital structure of charge-pump phase-locked loops (CP-PLL) is a challenge in modelling and simulation. In most cases the system is designed and characterized using its continuous linear model or its discrete linear model neglecting its nonlinear switching behaviour. I.e., the time-varying model is approximated by a time-invariant representation using its average dynamics. Depending on what kind of phase detector is used, the scopes of validity of these approximations are different. Here, a preeminent characterization and simulation technique based on the systems event-driven feature is presented, merging the logical and analogue inherent characteristics of the system. In particular, the high-grade nonlinear locking process and the dead-zone are analyzed.

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Section: Virtual Statesmentioning

confidence: 99%

Non-linear behaviour of charge-pump phase-locked loops

2010

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“…The relevant events are the falling edges of the reference and VCO signals (Figure 4). This 'event driven' modelling technique has being previously pioneered for PLL's by [1,2,3]. An important parameter of this event driven model is the phase of the VCO and reference signals.…”

Section: Event Driven Modellingmentioning

confidence: 99%

“…The technique suggested by Van Paemel [3], to solve this is a first order numerical integration approximation, equation (5).…”

Section: Event Driven Modellingmentioning

confidence: 99%

“…Current event driven PLL models [2,3] determine the control voltage by iterating a difference equation over a period of time. A unique difference equation is derived for each type of filter architecture or order.…”

Section: Arbitrary Order Techniquementioning

confidence: 99%

“…Modelling these systems can be a slow, challenging process due to the combination of discrete and continuous time components and long settling times. Hedayat et al [1,2] and Van Paemel [3] have developed fast and accurate PLL models for 2 nd and 3 rd order systems. However no event driven PLL model for higher order systems (4 th , 5 th , 6 th etc.)…”

Section: Introductionmentioning

confidence: 99%

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Arbitrary order charge approximation event driven phase lock loop model

Daniels

Farrell

Baldwin

2004

Irish Signals and Systems Conference 2004

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-For higher order PLLs the derivation of the model difference equations become less amenable as the order of the loop filter is increased. In this paper an alternative technique is proposed. This uses the event driven technique, but removes the restriction on the order of the system.In section 2 an overview of event driven modelling of the PLL is given, explaining the purpose and the advantage of using an event driven model over a circuit simulation such as SPICE. In section 3 this alternative technique to modelling is given, examples of this model are presented and verified in section 4.

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Phase‐Locked Loops

Kolumbán

1999

Wiley Encyclopedia of Electrical and Electronics Engineering

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Analysis of a charge-pump PLL: a new model

Cited by 85 publications

References 1 publication

Non-linear behaviour of charge-pump phase-locked loops

Non-linear behaviour of charge-pump phase-locked loops

Arbitrary order charge approximation event driven phase lock loop model

Phase‐Locked Loops

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