Patent SG-11201901794V-A (SG)
Title: Fuse state sensing circuits, devices and methods
Inventor: YAN YAN
IPC: G11C17/18
Filed: 2017-08-28
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property C.--.` MD HIM 0 11101 HOE 3E1 0 101110 MHO Ell 1011011111011011# Organization International Bureau (10) International Publication Number 03 (43) International Publication Date ......P' WO 2018/044755 Al 08 March 2018 (08.03.2018) WIP0 I PCT (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every Gl1C 17/16 (2006.01) Gl1C 7/06 (2006.01) kind of national protection available): AE, AG, AL, AM, Gl1C 17/18 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, (21) International Application Number: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, PCT/US2017/048810 DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, (22) International Filing Date: KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 28 August 2017 (28.08.2017) 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, (25) Filing Language: English SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, (26) Publication Language: English TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 62/380,861 29 August 2016 (29.08.2016) US kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (71) Applicant: SKYWORKS SOLUTIONS, INC. [US/US]; UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 20 Sylvan Road, Woburn, Massachusetts 01801 (US). TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, (72) Inventors: YAN, Yan; 212 Bishop Landing, Unit 84, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, Irvine, California 92620 (US). CHOI, Yunyoung; 102 MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Summer Lilac, Irvine, California 92620 (US). LEE, Jun- TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, hyung; 110 Smallwheel, Irvine, California 92618 (US). KM, ML, MR, NE, SN, TD, TG). (74) Agent: CHANG, James W.; Chang & Hale LLP, 4199 Declarations under Rule 4.17: = Campus Drive, Suite 550, #115, Irvine, California 92612 — as to applicant's entitlement to apply for and be granted a = (US). patent (Rule 4.1700) = (54) Title: FUSE = = — = STATE SENSING CIRCUITS, . r Vdd DEVICES 0 1 0/ -144 AND METHODS (57) : Fuse state sensing circuits, devices and methods. In some embodiments, a fuse state sensing circuit can include an enable block configured to enable a flow of a fuse current resulting from a supply voltage to a fuse element upon receipt of an enable = = — — = DECISION BLOCK OUT2 PFET1 '4\ --143b 42 143a--/ .. 14 PFET2 K 140 signal substantially at the same time as when the supply voltage is applied. The fuse state sensing circuit can further include a current control block tailored to control an amount of the fuse current. The OUT1 fuse state sensing circuit can further include a decision block im- FUSE = CIRCUIT 0 L SENSING r CURRENT I NFEri I 0/ -132 = SENSING • plemented to generate an output representative of a state of the fuse , element based on the fuse current, with the output being generated I = 104 — = = CONTROL I BLOCK L r SENSING 1 134b 134a 122 NFET2 KT 1 during a ramp-up portion of the application of the supply voltage. 130 J 1 I 11 .4 ir) IN 1 1' FUSE r R1,R2 ( R1<R2) L RESISTANCE VALUES ENABLE INFET3 BLOCK I ,,,-102 IT 1 FUSE 1 BLOCK I I — ir) L_ -- . • SENSE ENABLE ,-102 FUSE SIGNAL Rref NFET4I V- 120 J X110 I I I J 1 1' (R1<Rref<R2) © ---.... GC 1-1 FIG.3 0 ei O [Continued on next page] WO 2018/044755 Al 1#110figinigERI0MMO11111111111111111111111111111111111111 Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event amendments (Rule 48.2(h)) of receipt of