Granular power management in a power-efficient system on a chip(SoC)requires multiple integrated voltage regulators with a small area,process scalability,and low supply voltage.Conventional on-chip analog low-dropout ...Granular power management in a power-efficient system on a chip(SoC)requires multiple integrated voltage regulators with a small area,process scalability,and low supply voltage.Conventional on-chip analog low-dropout regulators(ALDOs)can hardly meet these requirements,while digital LDOs(DLDOs)are good alternatives.However,the conventional DLDO,with synchronous control,has inherently slow transient response limited by the power-speed trade-off.Meanwhile,it has a poor power supply rejection(PSR),because the fully turned-on power switches in DLDO are vulnerable to power supply ripples.In this comparative study on DLDOs,first,we compare the pros and cons between ALDO and DLDO in general.Then,we summarize the recent DLDO advanced techniques for fast transient response and PSR enhancement.Finally,we discuss the design trends and possible directions of DLDO.展开更多
With the introduction and development of evidence-based medicine in China, it has been spread rapidly in the area of integrative medicine（IM） and has become a new unique discipline. During almost 20 years, as one of...With the introduction and development of evidence-based medicine in China, it has been spread rapidly in the area of integrative medicine（IM） and has become a new unique discipline. During almost 20 years, as one of the most important parts of evidence-based IM, systematic review（SR）/meta-analysis（MA） of IM have shown a good development momentum in the aspects of quantity, depth, breadth and influence, but also face the harsh situation of the uncontrolled quantity and quality, especially for SRs in Chinese. Therefore, how to supervise and standardize this area effectively becomes a problem to be solved. Based on the experience both at home and abroad, the authors put forward several kinds of solutions for laying the foundation for further development such as promoting the registration system of SR/MA of IM, effectively setting up the regulatory platform of quality and quantity, launching professional training for SR/MA reviewers, formingqualification registration, developing the data transfer and sharing platform to realize the transparency of evidence process.展开更多
Animals can sense many environment stimuli simultaneously and integrate these signals within the nervous system. However, the neural system and molecular
基金supported by the National Natural Science Foundation of China(No.61974046)the Provincial Key Research and Development Program of Guangdong(2019B010140002)the Macao Science&Technology Development Fund(FDCT)145/2019/A3 and SKL-AMSV(UM)-2020-2022.
文摘Granular power management in a power-efficient system on a chip(SoC)requires multiple integrated voltage regulators with a small area,process scalability,and low supply voltage.Conventional on-chip analog low-dropout regulators(ALDOs)can hardly meet these requirements,while digital LDOs(DLDOs)are good alternatives.However,the conventional DLDO,with synchronous control,has inherently slow transient response limited by the power-speed trade-off.Meanwhile,it has a poor power supply rejection(PSR),because the fully turned-on power switches in DLDO are vulnerable to power supply ripples.In this comparative study on DLDOs,first,we compare the pros and cons between ALDO and DLDO in general.Then,we summarize the recent DLDO advanced techniques for fast transient response and PSR enhancement.Finally,we discuss the design trends and possible directions of DLDO.
基金Supported by Funding of Major Supporting Departments(KFKFC) of Rehabilitation Medicine,Wuxi People's Hospital Affiliated to Nanjing Medical Universitythe Second Batch of National "Ten Thousand Talents Plan" of Scientific and Technological Innovation Leading Talents(No.W02020052)
文摘With the introduction and development of evidence-based medicine in China, it has been spread rapidly in the area of integrative medicine（IM） and has become a new unique discipline. During almost 20 years, as one of the most important parts of evidence-based IM, systematic review（SR）/meta-analysis（MA） of IM have shown a good development momentum in the aspects of quantity, depth, breadth and influence, but also face the harsh situation of the uncontrolled quantity and quality, especially for SRs in Chinese. Therefore, how to supervise and standardize this area effectively becomes a problem to be solved. Based on the experience both at home and abroad, the authors put forward several kinds of solutions for laying the foundation for further development such as promoting the registration system of SR/MA of IM, effectively setting up the regulatory platform of quality and quantity, launching professional training for SR/MA reviewers, formingqualification registration, developing the data transfer and sharing platform to realize the transparency of evidence process.
文摘Animals can sense many environment stimuli simultaneously and integrate these signals within the nervous system. However, the neural system and molecular
