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.
Both high switching frequency and high efficiency are critical in reducing power adapter size. The active clamp flyback (ACF) topology allows zero voltage soft switching under all line and load conditions, eliminating all leakage inductance and snubber losses. Using enhanced mode GaN switches, an optimized active clamp flyback can enable 5–10x higher switching frequency, while improving efficiency...
In this paper, a modular single stage step-up resonant converter with an extended soft-switching operating range is presented. A passive auxiliary circuit is employed to extend soft-switching operation over a wide range of operating points. Soft-switching operation allows using Silicon Carbide (SiC) MOSFETS and as a result higher switching frequency can be achieved. To reduce the number of conversion...
This paper presents a hybrid control strategy for a dual active bridge (DAB) based dc-dc converter which combines the benefits of traditional phase shift and burst mode modulation schemes. The advantage of using such a control strategy stems from the fact that it can extend the zero voltage switching (ZVS) range of all power switches in both the primary and secondary bridges when there is a wide variation...
As silicon carbide (SiC) and gallium nitride (GaN) devices become commercially available nowadays, high switching frequency operation becomes a popular way to increase the power converter efficiency and power density. A key trade-off of these gains is the increasing electromagnetic inference (EMI) noise. In order to attenuate the EMI noise from the power loop into the auxiliary sources, the isolation...
Coss nonlinear behavior of modern power FETs challenges large-signal model development used for DC-DC converter efficiency optimization. Small-signal data available in vendor's specifications could mislead and cause errors. Paper reviews existing modeling approaches and suggests accurate practical large signal Coss models for popular wide bandgap (WBG) FETs based on experimental test setup.
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.