Zuken's PI/EMI Tool and its PI Simulation Capabilities for PDN Impedance Control
Unfortunately, given the complexity of today's PDNs and all the parasitic effects, analysing a circuit layout for PDN…
The impedance waveform of a power delivery network should ideally be without larger peaks within the frequency band in which the ICs operate. This is the fundamental guiding principle in the…
Hence, the target impedance can be understood as a limit of the current/voltage ratio to ensure, that the ∆V from formula #2 does not exceed the desired ripple voltage limits. If the PDN impedance…
Target Impedance Values in PDN Design
The knowledge and control of the target impedance have become a standard approach for proper PDN design. Especially when designers must meet the given IC vendor…
If we take a closer look at the frequency behaviour (see Figure 2), it becomes clear that any PCB power delivery network will show some degree of capacitive behaviour at lower frequencies while…
One approach to ensuring the proper operation of high-speed systems while maintaining the required performance is to control the power delivery network impedance over a certain frequency range…
Introducing PDN Target Impedance
As clock and data frequencies increase and high-speed boards become densely populated with increasingly power-demanding integrated circuits (pin-counts rising to…
Hence, the trace capacitance depends directly on the trace construction within the board (PCB buildup): trace width, copper height, and the trace’s distance to a reference layer acting as a return…
Impedance and its Relation to Capacitance and Inductance
The theory of electronics plays an elementary role in analyzing impedance issues, just to mention here Ohm’s law, Kirchhoff’s laws, and for…
You are not sure what the term PDN impedance actually means for you and what you have to pay attention to when designing a PDN? Let’s take a look at what PDN impedance and target impedance are and…
