Adaptive voltage modulation circuits for adjusting supply voltage to reduce supply voltage droops and minimize power consumption

• Main Authors: TARR, GABRIEL MARTEL, PRICE, BURT LEE, BRIDGES, JEFFREY TODD, PATEL, SANJAY, SRIDHAR, SHRADDHA, KOLLA, YESHWANT NAGARAJ
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

Adaptive voltage modulation circuits for adjusting supply voltage to reduce supply voltage droops and minimize power consumption are provided. In one aspect, an adaptive voltage modulation circuit detects a supply voltage droop by detecting when a supply voltage falls below a droop threshold voltage, and adjusts a clock signal provided to a load circuit in response to a supply voltage droop. The adaptive voltage modulation circuit keeps a count of the number of clock signal cycles during which the supply voltage is below the droop threshold voltage. The adaptive voltage modulation circuit increases the supply voltage in response to the count exceeding an upper threshold value, and decreases the supply voltage in response to the count being less than a lower threshold value at an end of a defined period. The adaptive voltage modulation circuit can reduce the time a load circuit operates with reduced frequency while minimizing power consumption.