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Digital peak input voltage detector for a power converter controller

A technology of power converter and input voltage, applied in the direction of measuring current/voltage, high-efficiency power electronic conversion, AC/pulse peak measurement, etc., can solve problems such as increase or decrease

Inactive Publication Date: 2014-06-11
POWER INTEGRATIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the peak value of the input voltage signal may vary over time
That is, the peak input voltage may increase or decrease cycle-by-cycle

Method used

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  • Digital peak input voltage detector for a power converter controller
  • Digital peak input voltage detector for a power converter controller
  • Digital peak input voltage detector for a power converter controller

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Embodiment Construction

[0016] Digital peak input voltage detection for use in power converter controllers is disclosed. 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 skilled in the art that the specific details are not necessarily employed to practice the invention. In other instances, well-known materials or methods have not been described in detail in order not to obscure the present invention.

[0017] References in this specification to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the invention. middle. Thus, appearances of the phrases "in one embodiment," "in an embodiment," "an example," or "example" in various places in this specification are not necessarily all referring to the same em...

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Abstract

An example integrated circuit controller for a power converter includes a digital peak detector and a switching block. The digital peak detector is coupled to output a digital count signal representative of a peak input voltage of the power converter. The switching block is coupled to control switching of a power switch of the power converter to regulate an output of the power converter. The switching block is further coupled to control the switching of the power switch in response to the digital count signal.

Description

technical field [0001] The present invention relates generally to power converters, and more particularly, the present invention relates to control circuits for detecting peak input voltage. Background technique [0002] Many electronic devices, such as cellular phones, personal digital assistants (PDAs), laptop computers, etc., are powered by DC power sources. Since power is typically delivered through wall outlets as high voltage AC power, for many electronic devices a device, often referred to as a power converter, is required to convert the high voltage AC power into usable DC power. The available DC power can be provided directly to the device by a power converter or it can be used to charge a rechargeable battery which in turn provides energy to the device, but the battery needs to be recharged once the stored energy is depleted. In operation, a power converter may use a controller to regulate the output power delivered to an electronic device generally referred to as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/325
CPCH02M1/4258H02M3/33515G01R19/2506G01R19/04Y02B70/126Y02B70/10
Inventor 青冈·曾高·明·潘
Owner POWER INTEGRATIONS INC