Apparatus and method to reduce power losses in an integrated voltage regulator

Non-transitory machine readable storage media having one or more instructions that when executed cause one or more processors to perform an operation comprising:

• extract S-parameters for a first power domain powered by a first voltage regulator (VR) coupled to first one or more inductors, and a second power domain powered by a second VR coupled to second one or more inductors, wherein at least one of the first and second one or more inductors are mutually coupled;
• determine, for at least two operating voltages of the first and second power domains, phase angle and switching frequency combinations that meet ripple current targets;
• and
• provide a non-zero phase angle offset, between switching transistors of the first VR relative to the second VR, according to the determined phase angle and switching frequency combinations.

A system comprising:

• a memory;
• a processor coupled to the memory, the processor including:
• a first voltage regulator (VR) coupled to first one or more inductors, the first VR is to provide power to a first power domain;
• and
• a second VR coupled to second one or more inductors at least one of which is inductively coupled to at least one of the first one or more inductors, the second VR is to provide power to a second power domain separate from the first power domain, wherein there is a non-zero phase angle offset between switching transistors of the first VR relative to the second VR;
• and
• a wireless interface to allow the processor to communicate with another device.