Driver circuit for controlling a resonant converter

Details Driver circuit for controlling a resonant converter Driver circuit for controlling a resonant converter

2006-05-16

2006-05-16

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

Reexamination Certificate

active

07046049

ABSTRACT:
In order to improve the efficiency of a driver circuit for controlling upper and lower switching means (T3, T4) for converting a direct voltage Ud into a clocked output voltage Ua for a resonant converter with a high-voltage section (HT) for controlling the upper switching means (T3) and a low-voltage section (NT) for controlling the lower switching means (T4), which switch the switching means (T3, T4) on alternately to one another, the switch-on phases of the switching means (T3, T4) being separated from one another by dead-time phases, there is provided a first circuit section which controls the duty cycle Δtein3of the upper switching means (T3) as a function of the duty cycle Δtein4of the lower switching means (T4), and receives control signals from the low-voltage section (NT) exclusively during the duty cycle Δtein4of the lower switching means (T4).

REFERENCES:
patent: 5105099 (1992-04-01), Routh et al.
patent: 5408150 (1995-04-01), Wilcox
patent: 5543740 (1996-08-01), Wong
patent: 6201429 (2001-03-01), Rosenthal
patent: 6307409 (2001-10-01), Wrathall
patent: 6353345 (2002-03-01), Yushan et al.
patent: 6774674 (2004-08-01), Okamoto et al.

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