Analytic Ldi/dt Effect Model Based on Float Ground in Plasma Display Panel Driver System

Xiaoying HE  Weifeng SUN  Guohuan HUA  Shen XU  Shengli LU  

IEICE TRANSACTIONS on Electronics   Vol.E96-C   No.11   pp.1428-1435
Publication Date: 2013/11/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.1428
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Displays
driver system,  float ground,  Ldi/dt effect,  optimisation,  

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An Ldi/dt effect model based on float ground in a plamsa display panel (PDP) driver system is established in this paper. The model is to analyze the noise which appears in power supply and float ground pins of driver integrated circuits. Considering printed circuit board wiring and switching parasitic parameters, firstly Ldi/dt effect due to integrated circuits transition, is explained on the entire float-ground circuit operation. Then an analytic model is deduced and validated, and good agreement is obtained with experimental results. Based on the model, sensitivity analyses of key parameters are done. Finally, design optimisations to prevent the Ldi/dt effect based on float ground are proposed and verified in a PDP system.