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High voltage power supply with digital control and digital control method thereof

A high-voltage power supply, digital control technology, applied in the field of high-voltage voltage, can solve a lot of work and time problems

Inactive Publication Date: 2006-12-27
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, from figure 2 It can be seen that the prior art HVPS uses a large number of components, which results in a lot of work and time in the assembly process, and requires more PCB (printed circuit board) space to arrange a large number of components

Method used

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  • High voltage power supply with digital control and digital control method thereof
  • High voltage power supply with digital control and digital control method thereof
  • High voltage power supply with digital control and digital control method thereof

Examples

Experimental program
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Embodiment Construction

[0029] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] A high voltage power supply (HVPS) according to an exemplary embodiment of the present invention includes a combination of a digital control chip or ASIC capable of intermittently conducting a current in a primary side coil of a transformer and various analog components. In the exemplary embodiments of the present invention described below, an ASIC chip driving 4 channels is described, but the embodiments of the present invention are not limited thereto.

[0031] image 3 is a block diagram of an HVPS according to an exemplary embodiment of the present invention.

[0032] refer to image 3 , the HVPS includes a digital interface unit 100, an oscillator 130, a power-on reset unit 150, first to fourth digital control units 200, 300, 400, and 500, and first to fourth switching elements 270, 370, 470 and 570, which are offered as single-chip ASIC 6...

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PUM

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Abstract

A high voltage power supply (HVPS) with digital control and method thereof is provided, which includes a transformer for inducing a voltage using the interaction of primary and secondary side coils and an input voltage, switching elements for controlling a voltage induced in the secondary side coil by intermittently conducting a current in the primary side coil of the transformer, digital control units for controlling the intermittent switching of the switching elements in response to control data being input, and an adjusting unit for absorbing and removing a transient voltage of the reverse direction impressed through the primary side coil of the transformer. Transient voltage is absorbed and removed by a snubber circuit connected to the transformer. As a result, the withstand voltage of the switching element controlling the voltage of the transformer is minimized and heat generation of an incorporated single-chip ASIC is also minimized.

Description

technical field [0001] The present invention generally relates to a high voltage voltage with digital control and a method thereof. The present invention specifically relates to a high voltage voltage controlled by ASIC (Application Specific Integrated Circuit) technology and its method, wherein HVPS is characterized by stable output and multiple output control functions. Background technique [0002] Generally, an image forming apparatus such as a printer, a copier, or a facsimile is an apparatus provided to print an image corresponding to original image data on a recording medium such as printing paper. The electrophotographic technology used in this image forming apparatus is also adopted by other image forming apparatuses such as laser printers, LPH (LED Print Head) printers, facsimile machines, and the like. An electrophotographic image forming apparatus performs a printing operation through a series of steps including charging, exposure, development, transfer, and fix...

Claims

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Application Information

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IPC IPC(8): H02M3/28H02M3/335B41J2/385G03G15/00
CPCH02M3/33515H02M1/34G03G15/80
Inventor 蔡荣敏赵钟化赵埈奭
Owner SAMSUNG ELECTRONICS CO LTD
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