Patent SG-11201808927W-A (SG)
Title: Adaptive voltage modulation circuits for adjusting supply voltage to reduce supply voltage droops and minimize power consumption
Inventor: KOLLA YESHWANT
IPC: H02M3/157
Filed: 2017-05-25
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property C.--.` 1 MEM 0 11101 HOE 010 1111 1 0 01 010 111111011101111111 HMI ill OEN Organization International Bureau (10) International Publication Number 03 (43) International Publication Date .../- WO 2017/205583 Al 30 November 2017 (30.11.2017) WIPO I PCT (51) International Patent Classification: (72) Inventors: KOLLA, Yeshwant, Nagaraj; 5775 More- HO2M 3/157 (2006.01) HO2M 1/00 (2007.01) house Drive, San Diego, California 92121 (US). (21) International Application Number: BRIDGES, Jeffrey, Todd; 5775 Morehouse Drive, San PCT/US2017/034402 Diego, California 92121 (US). PATEL, Sanjay; 5775 Morehouse Drive, San Diego, California 92121 (US). (22) International Filing Date: SRIDHAR, Shraddha; 10300 Grovechase Lane, Raleigh, 25 May 2017 (25.05.2017) North Carolina 27617 (US). PRICE, Burt, Lee; 5775 Morehouse Drive, San Diego, California 92121 (US). (25) Filing Language: English TARR, Gabriel, Martel; 5775 Morehouse Drive, San (26) Publication Language: English Diego, California 92121 (US). (30) Priority Data: (74) Agent: TERRANOVA, Steven, N.; Withrow & Terrano- 62/342,638 27 May 2016 (27.05.2016) US va, PLLC, 106 Pinedale Springs Way, Cary, North Carolina 15/604,038 24 May 2017 (24.05.2017) US 27511 (US). (71) Applicant: QUALCOMM INCORPORATED [US/US]; (81) Designated States (unless otherwise indicated, for every ATTN: International IP Administration, 5775 Morehouse kind of national protection available): AE, AG, AL, AM, Drive, San Diego, California 92121-1714 (US). AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (54) Title: ADAPTIVE VOLTAGE MODULATION CIRCUITS FOR ADJUSTING SUPPLY VOLTAGE TO REDUCE SUPPLY VOLTAGE DROOPS AND MINIMIZE POWER CONSUMPTION SUPPLY VOLTAGE DROOP DETECTION ADAPTIVE VOLTAGE MODULATION AND MITIGATION CIRCUIT (104) CIRCUIT (100) CLK RT _ CLK_LD CLOCK ADJUSTMENT LOAD CIRCUIT (102) .TO CIRCUIT 110 SUPPLY VOLTAGE ADJUST CIRCUIT (112) V DETECTION CIRCUIT 106 (CNT) COUNTER GREATS 118 (VDT) CIRCUIT 114 THAN (AU) VOLTAGE ADJUST-UP CIRCUIT (116) SUPPLY VOLTAGE CONTROLLER 108 CLK REF VOLTAGE ADJUST-DOWN CIRCUIT (120) LESS CIRCUIT 124 FIG. 1 THAN (AD) TO POWER MANAGEMENT CIRCUIT 11 (126) en (57) : Adaptive voltage modulation circuits for adjusting supply voltage to reduce supply voltage droops and minimize power GC in consumption are provided.In one aspect, an adaptive voltage modulation circuit detects a supply voltage droop by detecting when a lf) supply voltage falls below a droop threshold voltage, and adjusts a clock signal provided to a load circuit in response to a supply voltage N 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 IN exceeding an upper threshold value, and decreases the supply voltage in response to the count being less than a lower threshold value at 1-1 © an end of a defined period. The adaptive voltage modulation circuit can reduce the time a load circuit operates with reduced frequency ei C [Continued on next page] WO 2017/205583 Al MIDEDIMOMOIDEIROIDEMODIMIIMMOMEHOIMIE DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) while minimizing power consumption.