The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a low-area, high-efficiency hybrid 6-stage voltage multiplier by cascoding Dickson chargepumps and modified Cockcroft-Walton charge-pumps, and paralleling them with auxiliary charge-pumps. The proposed architecture obtains a good area and efficiency performance without using high-V devices or external capacitors. Implemented in a standard 0.18-μm CMOS process, the prototype provides...
This paper describes the dielectric material and the structure of the standard capacitance box (decade capacitor) developed by NIM with the capacitance range of 1pF to 0.1µF and the accuracy of 50ppm at 1 kHz. High stability and high accuracy of the standard capacitance box mainly derives from a choice of dielectric materials that are fused-silica and nano-ceramic, and each capacitor in the box contained...
The use of a bi-directional buck-boost cascade converter in electric vehicles allows the suitable control of both motoring and regenerative braking operations. Based on the bidirectional buck-boost cascade converter, the random pulse width modulation (RPWM) scheme is implemented to reduce the conducted electromagnetic interference (EMI). Compared with the fixed frequency PWM (FPWM), the proposed RPWM...
Low conduction loss is the main advantage of bridgeless Boost PFC topology. In order to decrease switching loss and further improve efficiency, a bridgeless Boost PFC circuit with passive lossless snubber circuit is proposed. Using this snubber circuit, the power switches turn off with ZVS (zero voltage switching) and turn on with near ZCS (zero current switching) and the fast-recovery diodes operate...
This paper analyzed the neutral-point balancing problem of the neutral-point-clamped (NPC) three-level space voltage vector pulse-width modulation (SVPWM) inverter and the influence of each vector to the neutral-point voltage. Based on the normal control strategies to solve the neutral-point balancing problem, including the open-circuit passive control strategy, the hysteresis-band control strategy,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.