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Systems and methods for switching valley switching in power converters

A power converter, a technology for switching power, used in output power conversion devices, conversion of DC power input to DC power output, control/regulation systems, etc.

Inactive Publication Date: 2019-05-21
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another challenge is maintaining valley switching throughout the entire phase angle range of the dimmer while maintaining the desired output regulation

Method used

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  • Systems and methods for switching valley switching in power converters
  • Systems and methods for switching valley switching in power converters
  • Systems and methods for switching valley switching in power converters

Examples

Experimental program
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Embodiment Construction

[0044] Figure 8 A lighting system 800 is depicted with improved valley switching techniques according to an embodiment of the disclosure. Such as Figure 8 As shown, lighting system 800 may include voltage source 804 , dimmer 802 , and lamp assembly 842 . The voltage source 804 can generate the supply voltage V 电源 , the supply voltage V 电源 For example a nominal 60Hz / 110V line voltage in the US or a nominal 50Hz / 220V line voltage in Europe.

[0045] Dimmer 802 may include any system, device, or device for generating a dimming signal to other elements of lighting system 800, the dimming signal representing a dimming level that causes lighting system 800 to adjust the power delivered to the lamp, and thereby according to The dimming level increases or decreases the brightness of the LED 832 . Thus, the dimmer 802 can include something similar to figure 1 The leading edge dimmer depicted in the image 3 The trailing edge dimmer depicted in or any other suitable dimmer.

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PUM

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Abstract

A controller configurable to generate a control signal that activates and deactivates a switch of a switching power converter to control a switching period and a peak current of the switching power converter to maintain a regulated current of the switching power converter at a desired current level such that: if the switching period falls below the minimum switching period, the controller increases the switching period by the oscillation period of the voltage of the switch and increases the peak current to compensate for the increase in the switching period in order to maintain the regulated current; and if the peak current increases is greater than the maximum peak current, the controller reduces the switching period to the oscillation period of the voltage of the switch, and reduces the peak current to compensate for the reduction of the switching period so as to maintain the regulated current.

Description

[0001] related application [0002] This disclosure claims priority to U.S. Provisional Patent Application No. 61 / 980,789, filed April 17, 2014, and U.S. Nonprovisional Patent Application No. 14 / 495,564, filed September 24, 2014, both of which are hereby incorporated by reference. The full text of the application is incorporated. technical field [0003] The present disclosure relates generally to the field of electronics, and more particularly to systems and methods for switching valley switching in power converters. Background technique [0004] Many electronic systems include circuitry such as switching power converters or transformers that interface with dimmers. The interfacing circuit delivers power to the load according to the dimming level set by the dimmer. For example, in a lighting system, a dimmer provides an input signal to the lighting system. The input signal represents a dimming level that causes the lighting system to adjust the power delivered to the la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156H02M3/335H02M1/00
CPCH02M3/156H02M3/33507H02M1/0054H02M1/0058Y02B70/10H02M3/137
Inventor P·马祖姆达尔M·苏德R·辛格S·辛格
Owner SIGNIFY HLDG BV