Flash-LED Driver Discharge Control
A technology of discharge control and driving circuit, which is applied in the direction of electric lamp circuit layout, instruments, TV, etc., and can solve problems such as boost circuit failure and damage to smart phones, etc.
Active Publication Date: 2015-05-06
SKYWORKS SOLUTIONS INC
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Problems solved by technology
Given the relatively high operating power level, the boost circuit could damage the entire smartphone by sinking excessive current and / or causing voltage spikes
Although a single current sink and / or voltage spike will not cause failure, repeated operation of the boost circuit may eventually lead to failure due to component degradation following repeated cycles of surges with undesired consequences
Method used
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[0026] Numerous details are described herein in order to provide a thorough understanding of the exemplary embodiments illustrated in the drawings. However, the present disclosure may be practiced without many of these specific details. Well-known methods, components, and circuits have not been described in detail so as not to unnecessarily obscure more relevant aspects of the embodiments described herein.
[0027] figure 1 is a schematic diagram of an electronic device 100 including a digital camera module 120 . Electronic device 100 is one of a number of devices including, without limitation, computers, laptops, tablet devices, netbooks, kiosks, personal digital assistants, mobile phones, smartphones, gaming devices, computer server or any other computing device. In some implementations, the electronic device 100 includes one or more processors, one or more types of memory, a display, and / or other user interface components (such as a keyboard, touch screen display, mouse,...
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Various implementations include circuits, devices and / or methods that enable the repeated generation of controlled surges with lower risk of component failure. Some implementations include a discharge control assembly including a discharge circuit and a controller. In some implementations, the discharge circuit is selectively connectable to a driver circuit, and the discharge circuit is configured to provide a dominant discharge path for the driver circuit when the driver circuit is effectively decoupled from a first load in order to decay an electrical condition of the driver circuit produced prior to the driver circuit being effectively decoupled from the first load. In some implementations, the controller is configured to selectively connect the driver circuit to a combination of the discharge circuit and the first load, and in at least one combination the discharge circuit is effectively coupled to the driver circuit when the first load is effectively decoupled from the driver circuit.
Description
[0001] related application [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 879,114, filed September 17, 2013, which is incorporated herein by reference. technical field [0003] The present disclosure relates to electronic circuits, and in particular to circuits capable of repeatedly generating controlled surges with low risk of component failure. Background technique [0004] The continuing demand for developing consumer electronic devices is often met by incorporating additional features into existing products. For example, an increasing number of electronic devices, such as smart phones and tablet computers, include digital cameras that augment and / or enhance the basic functionality of the electronic devices. A digital camera is a particularly heavily used feature of current smartphones, supported by a sizable portion of all new photos taken with smartphones. [0005] A disadvantage of incorporating additional components and / or f...
Claims
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IPC IPC(8): H05B37/02H05B44/00H04N23/75
CPCH05B45/38H05B47/17H05B45/40G03B15/03H04N23/75H02M3/07H02M3/156H02J7/345H05B45/60
Inventor W·恩格G·A·哈里曼
Owner SKYWORKS SOLUTIONS INC