A CMOS high-voltage DC-DC up converter dedicated for ultrasonic applications
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
This paper concerns the design and implementation of a fully integrated high voltage CMOS DC-DC up converter (VHVUC) dedicated to ultrasonic transmitters. This VHVUC new topology, followed by a drive amplifier, is based on a multiple-stage charge pump circuit and a level-up shifter is used in each stage as a clock generator in order to increase exponentially the DC voltage. A drive amplifier, based on a level-up stage and a class D switching output stage. It is used to excite the ultrasonic transducer, resonate at 3.5 MHz. Simulation results of the proposed converter, using a 0.8/spl mu/m CMOS/DMOS High-Voltage process technology, show output voltage of 200 V with 83% gain voltage factor and a 95 mV output ripples for 2 MHz frequency. Also, the drive amplifier for single shock excitation show a 140 V spike at the transducer element with a pulse repetition time of 260 /spl mu/s and a rise and fall times of 220 ns and 713 ns respectively with a peak current through the transducer element of 25 mA. These results show the feasibility of applying HV process technology to replace conventional electronic transmitter technology.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it