Power integrity

Power integrity or PI is an analysis to check whether the desired voltage and current are met from source to destination. Today, power integrity plays a major role in the success and failure of new electronic products. There are several coupled aspects of PI: on the chip, in the chip package, on the circuit board, and in the system. Three main issues must be resolved to ensure power integrity at the printed circuit board level:[1]:615

  1. Keep the voltage ripple at the chips pads lower than the specification (e.g. less than +/-50 mV variation around 1V)
  2. Control ground bounce (also called synchronous switching noise, simultaneous switching noise, or simultaneous switching output (SSN or SSO))
  3. Control electromagnetic interference (EMI) and maintain electromagnetic compatibility (EMC): the power distribution network (PDN) is generally the largest set of conductors on the circuit board and therefore the largest (unwanted) antenna for emission and reception of noise.

See also

References

  1. ↑ Bogatin, Eric (13 July 2009). Signal and Power Integrity - Simplified. Pearson Education. ISBN 978-0-13-703503-8.
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