TY - JOUR
T1 - Staircase-voltage metal-oxide-semiconductor field-effect transistor driver circuit for therapeutic ultrasound
AU - Moro, Kosuke
AU - Yoshizawa, Shin
AU - Umemura, Shin Ichiro
PY - 2010/7/1
Y1 - 2010/7/1
N2 - An important component of all ultrasound systems is the high-voltage pulse generator used to excite the transducer. We created a new type of metal-oxide-semiconductor field-effect transistor (MOSFET) switching circuit for therapeutic ultrasound applications, on the basis of the staircase-voltage drive concept. The staircase drive can significantly decrease the harmonics in comparison with the conventional square-wave drive. Since it does not require a resonant circuit to improve the efficiency, the drive frequency can be freely changed and the total size of the drive circuit can be made smaller. Using a diode in series to the drain of each MOSFET, a staircase-voltage driver was created with a relatively simple configuration. The experimental results of operating a prototype driver, as well as the results from circuit simulation, are discussed.
AB - An important component of all ultrasound systems is the high-voltage pulse generator used to excite the transducer. We created a new type of metal-oxide-semiconductor field-effect transistor (MOSFET) switching circuit for therapeutic ultrasound applications, on the basis of the staircase-voltage drive concept. The staircase drive can significantly decrease the harmonics in comparison with the conventional square-wave drive. Since it does not require a resonant circuit to improve the efficiency, the drive frequency can be freely changed and the total size of the drive circuit can be made smaller. Using a diode in series to the drain of each MOSFET, a staircase-voltage driver was created with a relatively simple configuration. The experimental results of operating a prototype driver, as well as the results from circuit simulation, are discussed.
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U2 - 10.1143/JJAP.49.07HF02
DO - 10.1143/JJAP.49.07HF02
M3 - Article
AN - SCOPUS:77956596605
VL - 49
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 7 PART 2
M1 - 07HF02
ER -