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A power supply circuit of a digital micromirror chip and the digital micromirror chip

A digital micromirror chip and power supply circuit technology, applied in circuit devices, electrical components, emergency power supply arrangements, etc., can solve problems such as DMD damage, and achieve the effect of protecting from damage and meeting timing requirements.

Active Publication Date: 2015-08-26
FORYOU MULTIMEDIA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when a projector without a battery is suddenly powered off due to some abnormal conditions, five power supply voltages will be powered off at the same time, so it is easy to cause damage to the DMD

Method used

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  • A power supply circuit of a digital micromirror chip and the digital micromirror chip
  • A power supply circuit of a digital micromirror chip and the digital micromirror chip
  • A power supply circuit of a digital micromirror chip and the digital micromirror chip

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] see figure 1 , the embodiment of the present invention discloses a circuit diagram of a power supply circuit of a digital micromirror chip, including: a first voltage converter 11, a second voltage converter 12, a third voltage converter 13, a diode D1 and a first capacitor C1;

[0032] The input terminal of the first voltage converter 11 is connected to the power supply Vcc, the first output terminal outputs the first voltage U1 obtained by converting the p...

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Abstract

The invention provides a power supply circuit of a digital micromirror chip and the digital micromirror chip. The power supply circuit comprises a first voltage converter, a second voltage converter, a third voltage converter, a diode and a first capacitor, wherein the first voltage converter can convert obtained power voltage into first voltage, second voltage and third voltage to be output respectively; the second voltage converter can convert obtained power voltage into fourth voltage to be output; the third voltage converter can convert obtained power voltage into fifth voltage to be output; the positive pole of the diode is connected with a power source, the negative pole of the diode is connected with the input end of the second voltage converter and the input end of the third voltage converter, a positive plate of the first capacitor is connected with the negative pole of the diode, and a negative plate of the first capacitor is connected with a grounded terminal. When a projection machine without a battery fails suddenly, electric quantity stored in the first capacitor can continue to supply power for the second voltage converter and the third voltage converter for a period of time, and then the power down time of the fourth voltage and the fifth voltage is delayed.

Description

technical field [0001] The invention relates to the technical field of power supply circuits, and more specifically, relates to a power supply circuit of a digital micromirror chip and the digital micromirror chip. Background technique [0002] Digital Micromirror Device (DMD) is a key processing element of Digital Light Processing (DLP) projection technology, which is used to realize the digital optical processing process of DLP projection technology. DMD can provide 16.7 million colors and 256 gray levels, which can ensure that the moving images projected by DLP projectors are colorful, delicate, natural and lifelike. [0003] Due to the characteristics of the DMD itself, the DMD needs five different power supply voltages for power supply when it works normally. When the five different power supply voltages are powered off, there are timing requirements. Three of the power supply voltages are powered off first, and after a period of delay, the remaining The two power supp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/00G02B26/08
Inventor 梁小龙
Owner FORYOU MULTIMEDIA ELECTRONICS
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