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A common method for analyzing a PCB Power& F/ q7 \; ]+ X9 q+ T T
Distribution Network (PDN) involves performing model
4 j4 V) ^- @8 q% Qextractions on a CAD layout, checking the impedance vs4 {2 @, {; M" N* T* D: s( k
frequency plot, and using the model in transient simulations., b' Q5 P n& ]8 @
The proposed method uses a synthesized RLC model as a. r" `# }; f% V' k
replacement for CAD layout and that it closely mimics a realistic% C& ^8 ]/ v& j" ^* x* P
CAD layout extracted model. Such a synthesized model is easily7 t" N. \( E$ D0 L
created using self and transfer impedance equations (that can
( c! ]- W/ y5 O$ s) Q6 {6 d7 `( t2 {either be created manually or be incorporated into an algorithm
2 I. e1 b+ \8 b3 {3 r( H, hfor automatic generation). The RLC synthesized models are
# g) I" L2 n6 n% tpassive and causal and have been shown to eliminate common* r( @( X, n( I# n5 i
problems in transient simulations. The models can be created- W9 S0 K' Y9 [
quickly and easily with varying PDN impedances and effective) E8 X4 g# z0 d1 q; W$ c
topologies and have been shown to correlate very well with/ y4 I3 Z1 r' N) ^ J
models extracted from CAD layouts in both the frequency and
) a0 b2 c% V4 i; Ytime domains. Such models can potentially replace extracted
6 v" z! I# D& M4 `+ p; D$ {# cPCB models and enable efficient design space exploration to8 _% T1 V. A: z# L5 w7 e0 V" ~
determine PCB PDN targets. The technique can also be applied
8 m( O+ h0 z8 [. Dto PKG PDN models.; k: m0 o, r% V7 @ h: N2 ?
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