Subthreshold Level Shifter With Self-Controlled Current Limiter by Detecting Output Error

Wen, Liang; Cheng, Xu; Tian, Shudong; Wen, Haibo; Zeng, Xiaoyang

doi:10.1109/tcsii.2015.2504025

Cited by 44 publications

(23 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5(c)). The variations of the V OL then increases the variability of the static power for extremely low V ddL s. [16] 180nm Bulk 50 mV 96 mV 1.8 V 173@0.4V, 100KHZ * 20xINV 31.7@0.4V 55pW@0.4V 108.8 [4] 65nm Bulk 100 mV N/A 1.2 V 90.9@0.2V, 1MHz * 100fF 13.7@0.2V * 1.24nW@0.2V * 31.3 [5] 65nm Table II makes a comparison between this work and several state-of-the art designs. Apart from the minimum V ddL , reported characteristics of the proposed level shifter in Table II are post-layout simulation results at the TT process corner and room temperature.…”

Section: Discussionmentioning

confidence: 99%

An Ultra-Low Voltage and Low-Energy Level Shifter in 28-nm UTBB-FDSOI

Vatanjou

Ytterdal

Aunet

2019

IEEE Trans. Circuits Syst. II

View full text Add to dashboard Cite

A low-power level shifter capable of up-converting sub-50 mV input voltages to 1 V has been implemented in a 28 nm FDSOI technology. Diode connected transistors and a single-NWELL layout strategy have been used along with poly and back-gate biasing techniques to achieve an adequate balance between the drive strength of the pull-up and the pull-down networks. Measurements showed that the lowest input voltage levels, which could be upconverted by the 10 chip samples, varied from 39 mV to 52 mV. Half of the samples could upconvert from 39 mV to 1 V. The simulated energy consumption of the level shifter was 5.2 fJ for an up-conversion from 0.2 V to 1 V and 1 MHz operating frequency.

show abstract

Section: Discussionmentioning

confidence: 99%

An Ultra-Low Voltage and Low-Energy Level Shifter in 28-nm UTBB-FDSOI

Vatanjou

Ytterdal

Aunet

2019

IEEE Trans. Circuits Syst. II

View full text Add to dashboard Cite

show abstract

“…Several improvements to the conventional LS topologies [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] have been recently proposed to mitigate their intrinsic drawbacks when wide-range voltage-level conversion is required. Essentially, most of the solutions based on the DCVS scheme aim to weaken the PUN by means of reduced swing inverters [19] and/or diode-connected n-channel metal-oxide-semiconductor (nMOS)/p-channel metal-oxide-semiconductor (pMOS) [12,16].…”

Section: Related Workmentioning

confidence: 99%

“…The power supply of noncritical sections of the system could be aggressively scaled down to the subthreshold/near-threshold region in order to optimize energy consumption [3,8]. In such a case, low energy/delay level shifters (LSs), able to guarantee reliable wide-range voltage-level conversion, need to be used [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Low energy/delay overhead level shifter for wide‐range voltage conversion

Lanuzza

Crupi

Rao

et al. 2016

Circuit Theory & Apps

View full text Add to dashboard Cite

Multi-supply voltage systems on chip have been widely explored for energy-efficient elaborations. A main challenge of multi-supply voltage designs is the interfacing of digital signals coming from ultra-low-voltage core logics to higher power supply domains and/or to input/output circuits. In this work, we propose an energy/delay-efficient level shifter architecture that is capable of converting extremely low levels of input voltages to the nominal voltage domain. In order to limit static power, the proposed circuit is based on the single-stage differential cascode voltage switch scheme. To improve switching speed and dynamic energy consumption, our design dynamically adapts the current sourced by the pull-up network on the basis of the occurring transition. A test chip was fabricated in 180 nm complementary metal–oxide–semiconductor technology to verify the proposed technique. Measurement results show that our design is capable of converting 100 mV of input voltages to 1.8 V, while assuring an average propagation delay of about 26 ns, an average static power of 100 pW, and an energy per transition of 140 fJ for the target voltage-level conversion from 0.4 to 1.8 V

show abstract

“…To realize robust conversions between large supply voltage differences, several level shifters have been proposed [15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32]. In order to balance the strength of the pull-up and pull-down networks in cross-coupled based level shifter, in [18,26], diode current limiters are inserted in the pull-up networks to reduce the pull-up strength.…”

Section: Introductionmentioning

confidence: 99%

An ultra-low leakage energy efficient level shifter with wide conversion range

You

Jia

Tang

et al. 2019

IEICE Electron. Express

View full text Add to dashboard Cite

An ultra-low leakage energy efficient level shifter that can convert extremely low input voltage into the supply voltage level is presented in this paper. In order to reduce the leakage power dissipation, the super-cutoff mechanism and MTCMOS technique are utilized in the proposed structure. At the same time, a positive feedback circuit is inserted to avoid the loss of performance. Post-layout simulation results in a 55-nm MTCMOS process demonstrate that for the voltage level conversion from 0.3 V to 1.2 V, the proposed level shifter exhibits a propagation delay of 70.77 ns and an energy per transition of 89.55 fJ for input frequency of 1 MHz. Meanwhile, the static power of the proposed level shifter is as low as 27.82 pW. The proposed level shifter only occupies 7.79 um 2 , which demonstrates prominent area efficiency.

show abstract

Subthreshold Level Shifter With Self-Controlled Current Limiter by Detecting Output Error

Cited by 44 publications

References 13 publications

An Ultra-Low Voltage and Low-Energy Level Shifter in 28-nm UTBB-FDSOI

An Ultra-Low Voltage and Low-Energy Level Shifter in 28-nm UTBB-FDSOI

Low energy/delay overhead level shifter for wide‐range voltage conversion

An ultra-low leakage energy efficient level shifter with wide conversion range

Contact Info

Product

Resources

About