Switch-Mode Power Converter Using Magnetically Coupled Galvanically Isolated Leadframe Communication
A power converter, switch mode technology, applied in the field of communication across isolation barriers, can solve the slow operation of optocouplers, limit switch mode power converter feedback bandwidth and transient response, switch mode power converter adds additional size and cost issues
Active Publication Date: 2018-07-06
POWER INTEGRATIONS INC
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- Application Information
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Problems solved by technology
These known approaches add unwanted additional size and cost to the switch mode power converter
Additionally, optocouplers are slow and, in many cases, limit the feedback bandwidth and transient response of switch-mode power converters
Method used
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[0041] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that the specific details need not be employed to practice the present invention. In other instances, well-known materials or methods have not been described in detail in order to avoid obscuring the present invention.
[0042] Reference throughout this specification to "one embodiment," "an embodiment," "an example," or "an example" means that a particular feature, structure, or characteristic described with respect to the embodiment or example is included in the present specification. In at least one embodiment of the invention. Thus, appearances of the phrases "in one embodiment," "in an embodiment," "an example," or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the ...
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An integrated circuit package for a switch mode power converter includes an encapsulation and a lead frame. A part of the lead frame is arranged in the encapsulation. The lead frame includes a first conductor having a first conductive loop disposed generally within the encapsulation. The lead frame also includes a second conductor galvanically isolated from the first conductor. The second conductor includes a second conductive loop disposed generally within the enclosure proximate and magnetically coupled to the first conductive loop to provide a communication link between the first and second conductors. A first control chip including a first control circuit is coupled to the first conductor. A second control chip including a second control circuit is coupled to the second conductor. One or more control signals are communicated between the first control chip and the second control chip over the communication link.
Description
[0001] related application [0002] This application is related to a U.S. patent application entitled "Magnetically Coupled Galvanically Isolated Communication Using Lead Frame" filed on November 14, 2012 by Balakrishnan et al., which is assigned to To the assignee of this application. [0003] This application is also related to U.S. Patent Noise Cancellation For A Magnetically Coupled Communication Link Utilizing A Lead Frame, filed November 14, 2012 by Kung et al. application, which is assigned to the assignee of the present application. technical field [0004] The present invention generally relates to communication between circuits requiring galvanic isolation. More specifically, embodiments of the invention relate to communication across isolation barriers in switch-mode power converters, such as power supplies and power inverters. Background technique [0005] Switch-mode power converters are widely used in household appliances or industrial appliances that requir...
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IPC IPC(8): H02M1/08H01L23/495H01F38/14
CPCH01L23/49541H01L2224/48247H01L2224/48257H01L2224/4911H01L2224/49111H01L2924/19107H01L2924/30107H01L23/495H01L2924/13091H01L23/48H01L23/552H01L2924/13055H01L2924/12032H01L2924/1305H01L2224/29099H01L2224/49171H01L2224/32245H01L2224/73265H01L2924/00014H01L24/49H01L2924/181H01L24/48H01L23/49575H02M3/003H01L2924/00H01L2224/45099H01L23/66H02M3/33523
Inventor B·巴拉克里什南D·M·H·马修斯
Owner POWER INTEGRATIONS INC