DEVICE, METHOD AND SYSTEM TO DETERMINE A MODE OF VOLTAGE REGULATION BASED ON PARASITICS OF A POWER DELIVERY NETWORK
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United States of America Patent
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Issued Date -
Dec 29, 2022
app pub date -
Jun 25, 2021
filing date -
Jun 25, 2021
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Abstract
Techniques and mechanisms for determining an operational mode of a voltage regulator. In an embodiment, an integrated circuit (IC) die is coupled to receive power from a voltage regulator (VR) via a power delivery network (PDN) which comprises circuitry in or on a substrate, such as that of a printed circuit board. The IC die receives from the substrate information indicating a characteristic of a parasitic impedance at the substrate. Based on the information, a controller unit at the IC die selects one of multiple VR modes which each correspond to a respective one of different parasitic impedance characteristics. The controller then signals the VR to provide the selected mode. In an embodiment one of the VR modes corresponds to a relatively high impedance, and also corresponds to a relatively stable sensitivity function in a frequency range above a control bandwidth.
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