A Periodically Refreshed Capacitive Floating Level Shifter for Conditional Switching Applications
- Resource Type
- Periodical
- Authors
- Maeng, J.; Shim, M.; Jeong, J.; Park, I.; Kim, C.
- Source
- IEEE Transactions on Power Electronics IEEE Trans. Power Electron. Power Electronics, IEEE Transactions on. 36(2):1264-1268 Feb, 2021
- Subject
- Power, Energy and Industry Applications
Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
General Topics for Engineers
Nuclear Engineering
Signal Processing and Analysis
Transportation
Regulators
Switches
Delays
Jitter
Temperature measurement
Transistors
Leakage currents
Capacitively coupled level shifter (LS)
conditional switching signal
nonperiodic signal
periodic charge refresh
- Language
- ISSN
- 0885-8993
1941-0107
This letter presents a periodically refreshed capacitive floating level shifter (CFLS) for applications that require a conditional switching signal. The proposed structure can generate a floating signal without additional bias voltage, and all coupling capacitors (CCs) can be simultaneously refreshed. Digital low-dropout (DLDOs) regulators are integrated to show how the leakage current from a CC affects the DLDOs that are driven by conventional and proposed CFLSs. Results are measured according to the temperature and supply voltage. With a 28-nm CMOS process, the proposed CFLS achieves a delay of 8.9 ns including the I/O buffer delay and an energy consumption of 788 fJ per cycle at V DD = 0.9 V.