Method and apparatus for mitigating resonant effects within a power delivery network of a printed circuit board

摘要

A method for reducing noise on a power distribution network of a printed circuit board includes determining whether a given data signal may be a problematic data signal. The given data signal is issued onto a signal distribution network of the printed circuit board if the given data signal is determined to not be a problematic data signal. The given data signal is encoded into an encoded data signal if the given data signal is determined to be a problematic data signal, and the encoded data signal is issued onto the signal distribution network.

主权项

1. An electronic device, comprising:
a circuit board; a power distribution network disposed on the circuit board and having an impedance characteristic that varies with frequency; a signal distribution network disposed on the circuit board; an integrated circuit to receive operating power from the power distribution network and place a data signal onto the signal distribution network; and at least one element coupled to or included in the integrated circuit, the element to determine whether the data signal is a problematic data signal based on whether a phase angle or a power spectral density of the data signal exceeds a specified threshold at a given frequency, alter the data signal to a substitute data signal if the data signal is determined to be problematic, and cause the substitute data signal to be issued onto the signal distribution network instead of the problematic data signal.