AN2586 Freescale Semiconductor / Motorola, AN2586 Datasheet - Page 8

• Manufacturer Part Number: AN2586
• Description: MPC8260 PowerQUICC II Family Power Distribution Trends
• Manufacturer: Freescale Semiconductor / Motorola

Previous Work Study
Previous Work Study
Using a Intusoft simulator, the following (Figure 5) is the voltage measurement as we sweep the AC current
source frequency. Note that the AC amplitude is 1Amp, which makes the curve an impedance reading as
well.
Now using the same power supply network equivalent circuit let us see (Figure 6) the transient response to
a current step pulse with a rise time equal to the following:
8
MPC8260 PowerQUICC II Family Power Distribution Trends: A Survey
Freescale Semiconductor, Inc.
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Trise
Figure 5.
=
------------- -
200M
2
=
0.01µs
MOTOROLA