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Pulse transformer

A technology of pulse transformers and controllers, applied in magnetic bias transformers, transformer/inductor cores, transformer/inductor coils/windings/connections, etc., can solve problems such as output voltage instability

Active Publication Date: 2017-03-22
ALPHA & OMEGA SEMICON CAYMAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Those with ordinary knowledge in the field know that the driving components of the voltage converter are used to drive the main switch, but the driving components do not directly obtain the real-time changing load voltage from the load side, but rely on the feedback network to sense the load voltage. This feedback method will inevitably produce a delay effect. The bad consequence is that the drive component cannot keep pace with the change state of the load voltage to switch the main switch in real time due to the delay, so the current output voltage value output to the load will be different from the load required. There is a deviation between the actual voltage value of , this hysteresis brings potential instability to the output voltage

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Embodiment Construction

[0056] Below in conjunction with each embodiment, the technical solution of the present invention is clearly and completely set forth, but described embodiment is only the embodiment that the present invention is used for describing description and not all embodiments, based on these embodiments, this invention The solutions obtained by those skilled in the art without creative work all belong to the protection scope of the present invention.

[0057] see figure 1 , taking the flyback FLYBACK voltage converter (Voltage Converter) of AC to DC as an example to clarify the inventive spirit of the present invention, the voltage converter includes a power stage transformer T for voltage conversion, and the transformer T mainly has a primary side or primary side side winding L P and has a secondary or secondary side winding L S , the primary side winding L P The first end of the same name is at the input node N 10 receives the input voltage V IN while the primary side winding L...

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Abstract

The invention mainly relates to an electronic device for voltage conversion. A second controller is used for sensing an output voltage or an output current of a secondary side of a transformer in real time for power switching so as to generate a transient response control signal, a coupling component is used for transmitting the control signal generated by the second controller to a first controller at a primary side, and the first controller is used for generating a first pulse signal for power switching so as to control switch-on or switch-off of a winding of the primary side.

Description

technical field [0001] The present invention mainly relates to electronic devices for voltage conversion, more specifically, real-time sensing of the output voltage or output current on the secondary side of a transformer used for power switching to generate a control signal for transient response and utilize coupling elements The control signal is transmitted to the primary side of the transformer for power switching to control the primary side winding to turn off or on. Background technique [0002] In the existing voltage converters, all of them collect the voltage or current of the load side, and use the feedback network to feed back the collected feedback signal of the load side to the driving components of the voltage converter, such as a typical pulse width modulation method Or pulse frequency modulation, etc., the drive component uses the feedback signal to determine the duty cycle of the main switch in the voltage converter that switches between on and off, thereby ...

Claims

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Application Information

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IPC IPC(8): H01F19/08H01F27/26H05K1/18H01F27/28
CPCH01F27/34H01F27/38H05K1/165
Inventor 林天麒陈佑民郑荣霈黄培伦
Owner ALPHA & OMEGA SEMICON CAYMAN