Novel high power supply rejection ratio （PSRR） high-order temperature-compensated subthreshold metal-oxidesemiconductor （MOS） bandgap reference （BGR） is proposed in Semiconductor Manufacturing International Corp...Novel high power supply rejection ratio （PSRR） high-order temperature-compensated subthreshold metal-oxidesemiconductor （MOS） bandgap reference （BGR） is proposed in Semiconductor Manufacturing International Corporation （SMIC） 0.13 gm complementary MOS （CMOS） process. By adopting subthreshold MOS field-effect transistors （MOSFETs） and the piecewise-curvature temperature-compensated technique, the output reference voltage＇s temperature performance of the subthreshold MOS BGR is effectively improved. The subthreshold MOS BGR achieves high PSRR performance by adopting the technique of pre-regulator. Simulation results show that the temperature coefficient （TC） of the subthreshold MOS BGR is 1.38× 10^-6/℃ when temperature is changed from -40 ℃ to 125 ℃ with a power supply voltage of 1.2 V. The subthreshold MOS BGR achieves the PSRR of - 104.54 dB, - 104.54 dB,- 104.5 dB, - 101.82 dB and - 79.92 dB at 10 Hz, 100 Hz, 1 kHz, 10 kHz and 100 kHz respectively.展开更多
As nonlinear thermal devices,thermal regulators can intelligently respond to temperature and control heat flow through changes in heat transfer capacities,which allows them to reduce energy consumption without externa...As nonlinear thermal devices,thermal regulators can intelligently respond to temperature and control heat flow through changes in heat transfer capacities,which allows them to reduce energy consumption without external intervention.However,current thermal regulators generally based on high-quality crystallinestructure transitions are intrinsically rigid,which may cause structural damage and functional failure under mechanical strain;moreover,they are difficult to integrate into emerging soft electronic platforms.In this study,we develop a flexible,elastic thermal regulator based on the reversible thermally induced deformation of a liquid crystal elastomer/liquid metal(LCE/LM)composite foam.By adjusting the crosslinking densities,the LCE foam exhibits a high actuation strain of 121%with flexibility below the nematic–isotropic phase transition temperature(TNI)and hyperelasticity above TNI.The incorporation of LMresults in a high thermal resistance switching ratio of 3.8 over a wide working temperature window of 60◦C with good cycling stability.This feature originates from the synergistic effect of fragmentation and recombination of the internal LM network and lengthening and shortening of the bond line thickness.Furthermore,we fabricate a“grid window”utilizing photic-thermal integrated thermal control,achieving a superior heat supply of 13.7℃ at a light intensity of 180mW/cm^(2)and a thermal protection of 43.4℃at 1200 mW/cm^(2).The proposed method meets the mechanical softness requirements of thermal regulatormaterials with multimode intelligent temperature control.展开更多
基金supported by the Natural Science Foundation Project of CQ CSTC(cstc2016jcyj A0347)the Science and Technology on Analog Integrated Circuit Laboratory(6142802011503)the Key Technology Innovation Project of Key Industries in Chongqing(cstc2016zdcy-ztzx0038,cstc2017zdcy-zdyf0166)
文摘Novel high power supply rejection ratio （PSRR） high-order temperature-compensated subthreshold metal-oxidesemiconductor （MOS） bandgap reference （BGR） is proposed in Semiconductor Manufacturing International Corporation （SMIC） 0.13 gm complementary MOS （CMOS） process. By adopting subthreshold MOS field-effect transistors （MOSFETs） and the piecewise-curvature temperature-compensated technique, the output reference voltage＇s temperature performance of the subthreshold MOS BGR is effectively improved. The subthreshold MOS BGR achieves high PSRR performance by adopting the technique of pre-regulator. Simulation results show that the temperature coefficient （TC） of the subthreshold MOS BGR is 1.38× 10^-6/℃ when temperature is changed from -40 ℃ to 125 ℃ with a power supply voltage of 1.2 V. The subthreshold MOS BGR achieves the PSRR of - 104.54 dB, - 104.54 dB,- 104.5 dB, - 101.82 dB and - 79.92 dB at 10 Hz, 100 Hz, 1 kHz, 10 kHz and 100 kHz respectively.
基金National Key R&D Program of China,Grant/Award Number:2022YFB3805702National Natural Science Foundation of China,Grant/Award Numbers:52173078,52130303,51973158,51803151,51973152,52303101,52327802+1 种基金Science Foundation for Distinguished Young Scholars in Tianjin,Grant/Award Number:19JCJQJC61700Young Elite Scientists Sponsorship Program by CAST,Grant/Award Number:2022QNRC001。
文摘As nonlinear thermal devices,thermal regulators can intelligently respond to temperature and control heat flow through changes in heat transfer capacities,which allows them to reduce energy consumption without external intervention.However,current thermal regulators generally based on high-quality crystallinestructure transitions are intrinsically rigid,which may cause structural damage and functional failure under mechanical strain;moreover,they are difficult to integrate into emerging soft electronic platforms.In this study,we develop a flexible,elastic thermal regulator based on the reversible thermally induced deformation of a liquid crystal elastomer/liquid metal(LCE/LM)composite foam.By adjusting the crosslinking densities,the LCE foam exhibits a high actuation strain of 121%with flexibility below the nematic–isotropic phase transition temperature(TNI)and hyperelasticity above TNI.The incorporation of LMresults in a high thermal resistance switching ratio of 3.8 over a wide working temperature window of 60◦C with good cycling stability.This feature originates from the synergistic effect of fragmentation and recombination of the internal LM network and lengthening and shortening of the bond line thickness.Furthermore,we fabricate a“grid window”utilizing photic-thermal integrated thermal control,achieving a superior heat supply of 13.7℃ at a light intensity of 180mW/cm^(2)and a thermal protection of 43.4℃at 1200 mW/cm^(2).The proposed method meets the mechanical softness requirements of thermal regulatormaterials with multimode intelligent temperature control.
