Projector driving control circuit with high operation stability

Abstract

The utility model provides a projector driving control circuit with high operation stability. Comprising a main control chip U16, a first capacitance circuit connected with a VDD contact and a PWDNB contact of the main control chip U16, a first resistance circuit connected with an SSONB contact of the main control chip U16, and a second capacitance circuit connected with an XI N contact and an XOUT contact of the main control chip U16, the second resistance circuit is connected with a 50MHZ contact of the main control chip U16; the third resistance circuit is connected with a 48MHZ contact of the main control chip U16; a GND contact of the main control chip U16 is connected with a common ground; a capacitor C127 and a capacitor C128 are connected in parallel in the first capacitor circuit; the output end of the capacitor C127 and the output end of the capacitor C128 are connected with the common ground. A resistor R107 and a resistor R110 are connected in the first resistance circuit, and in the practical application process, the performance of resisting interference of an external power supply end or a signal end during operation of the projector can be better enhanced through circuit design, so that the quality of played pictures is better.

Description

[Technical field]

[0001] The utility model relates to the technical field of projector control circuits, and in particular to a projector drive control circuit with outstanding application effect and high operating stability. [Background Technology]

[0002] A projector is a device that can project images or videos onto a screen. In actual applications, it can be connected to terminal devices such as computers, mobile phones, and TV boxes through different interfaces to play corresponding view signals. Because projectors have the characteristics of large projection size, small size, and low impact on vision, they are widely used in home entertainment, offices, school teaching, and advertising.

[0003] The projector products and control circuit designs of the prior art are prone to interference from external power supply or signal terminals during actual use, which may cause abnormalities in the played images and affect the viewing experience.

[0004] For example, the utility model patent with application number CN202022594671.9 and patent name "A projector control circuit and projector" specifically discloses a projector control circuit and a projector, and the control circuit includes: a main control module, a power supply module, a display module, a 4G network module, a WiFi module, a storage module, an audio module, a heat dissipation module, a USB external module, a camera module, a gyroscope module, and an optical machine module; the main control module includes a main control chip, and the main control chip is DPP6401; the main control module is electrically connected to the power supply module, the display module, the 4G network module, the WiFi module, the storage module, the audio module, the heat dissipation module, the USB external module, and the camera module through the main control chip; the gyroscope module includes a motion sensor chip LSM6DSL; the SD0 / SA0 interface of the motion sensor chip is grounded through a resistor R389; the SDX interface and the SCX interface of the motion sensor chip are grounded; the CS interface and the VDD interface of the motion sensor chip are connected to the power supply; the SDA interface and the SCL interface of the motion sensor chip are connected to the main control chip.

[0005] The projector control circuit disclosed in the above-mentioned prior art document has the problems of poor stability and anti-interference performance.

[0006] In order to better solve the deficiencies in the prior art, it is necessary to further improve and enhance the functional structure of the projector product and the corresponding control circuit. [Contents of the utility model]

[0007] The problems existing in the prior art solved by this application are:

[0008] The projector products and control circuit designs of the prior art are prone to interference from external power supply or signal terminals during actual use, which may cause abnormalities in the played images and affect the viewing experience.

[0009] The solution to the technical problem of the utility model is:

[0010] Provided is a projector driving control circuit with high operation stability, comprising a main control chip U16, a first capacitor circuit connected to a VDD contact and a PWDNB contact of the main control chip U16, a first resistor circuit connected to a SSONB contact of the main control chip U16, a second capacitor circuit connected to a XIN contact and a XOUT contact of the main control chip U16, a second resistor circuit connected to a 50MHZ contact of the main control chip U16, and a third resistor circuit connected to a 48MHZ contact of the main control chip U16; the GND contact of the main control chip U16 is connected to a common ground; a capacitor C127 and a capacitor C128 are connected in parallel in the first capacitor circuit; the output ends of the capacitor C127 and the capacitor C128 are connected to a common ground; a resistor R is connected in the first resistor circuit. 107 and resistor R110; the resistor R107 is connected in parallel with the resistor R110; the output end of the resistor R110 is connected to the common ground; the second capacitor circuit is connected with capacitor C133, capacitor C134 and crystal oscillator Y2; the input ends of the capacitor C133 and capacitor C134 are simultaneously connected to the XIN contact of the main control chip U16; the output ends of the capacitor C133 and capacitor C134 are connected to the common ground; the two ends of the crystal oscillator Y2 are respectively connected to the XIN contact and XOUT contact of the main control chip U16; the second resistor circuit is connected with resistor R108; the third resistor circuit is connected with resistor R109; the second resistor circuit is connected to the common ground after connecting a capacitor C135; the third resistor circuit is connected to the common ground after connecting a capacitor C136.

[0011] Preferably, the model of the main control chip U16 is ASM3P2853A.

[0012] Preferably, the capacitance values ​​of the capacitor C127 and the capacitor C128 are both 0.1U.

[0013] Preferably, an inductor FB14 is connected in series between the input ends of the capacitor C127 and the capacitor C128; the model of the inductor FB14 is M10603J680R.

[0014] Preferably, the crystal oscillator Y2 is a 25NHZ crystal oscillator.

[0015] Preferably, the resistor R107 and the capacitor C128 are both connected to the same power supply terminal P2P5V.

[0016] The technical effects of solving the technical problem in this application are as follows:

[0017] Compared with the prior art, the utility model provides a projector driving control circuit with high operation stability by simultaneously setting a main control chip U16, a first capacitor circuit connected to the VDD contact and the PWDNB contact of the main control chip U16, a first resistor circuit connected to the SSONB contact of the main control chip U16, and a first resistor circuit connected to the XI contact of the main control chip U16. The second capacitor circuit connected to the N contact and the XOUT contact, the second resistor circuit connected to the 50MHZ contact of the main control chip U16, and the third resistor circuit connected to the 48MHZ contact of the main control chip U16; the GND contact of the main control chip U16 is connected to the common ground; the first capacitor circuit is connected in parallel with capacitor C127 and capacitor C128; the output ends of the capacitor C127 and the capacitor C128 are connected to the common ground; the first resistor circuit is connected with resistor R107 and resistor R110; the resistor R107 is connected in parallel with the resistor R110; the output end of the resistor R110 is connected to the common ground; the second capacitor circuit is connected with capacitor C133, capacitor C134 and crystal oscillator Y2; the input ends of the capacitor C133 and capacitor C134 are simultaneously connected to the XI of the main control chip U16 N contact; the output ends of the capacitor C133 and the capacitor C134 are connected to the common ground; the two ends of the crystal oscillator Y2 are respectively connected to the XI N contact and the XOUT contact of the main control chip U16; the second resistor circuit is connected with a resistor R108; the third resistor circuit is connected with a resistor R109; the second resistor circuit is connected to the common ground after connecting a capacitor C135; the third resistor circuit is connected to the common ground after connecting a capacitor C136. In actual application, the circuit design can be used to better enhance the performance of the projector in resisting interference from the external power supply or signal end during operation, thereby making the playback picture quality better and improving the viewing experience. [Drawings]

[0018] Figure 1 The utility model is a circuit connection schematic diagram of a projector drive control circuit with high operation stability. [Specific implementation method]

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit this utility model.

[0020] See also Figure 1 The utility model provides a high-operation stability projector driving control circuit 1, which includes a main control chip U16, a first capacitor circuit connected to the VDD contact and the PWDNB contact of the main control chip U16, a first resistor circuit connected to the SSONB contact of the main control chip U16, and a XI The second capacitor circuit connected to the N contact and the XOUT contact, the second resistor circuit connected to the 50MHZ contact of the main control chip U16, and the third resistor circuit connected to the 48MHZ contact of the main control chip U16; the GND contact of the main control chip U16 is connected to the common ground; the first capacitor circuit is connected in parallel with capacitor C127 and capacitor C128; the output ends of the capacitor C127 and the capacitor C128 are connected to the common ground; the first resistor circuit is connected with resistor R107 and resistor R110; the resistor R107 is connected in parallel with the resistor R110; the output end of the resistor R110 is connected to the common ground; the second capacitor circuit is connected with capacitor C133, capacitor C134 and crystal oscillator Y2; the input ends of the capacitor C133 and capacitor C134 are simultaneously connected to the XI of the main control chip U16 N contact; the output ends of the capacitor C133 and the capacitor C134 are connected to the common ground; the two ends of the crystal oscillator Y2 are respectively connected to the XIN contact and the XOUT contact of the main control chip U16; the second resistance circuit is connected with a resistor R108; the third resistance circuit is connected with a resistor R109; the second resistance circuit is connected to the common ground through a capacitor C135; the third resistance circuit is connected to the common ground through a capacitor C136.

[0021] The present application simultaneously sets a main control chip U16, a first capacitor circuit connected to the VDD contact and the PWDNB contact of the main control chip U16, a first resistor circuit connected to the SSONB contact of the main control chip U16, and a first resistor circuit connected to the XI contact of the main control chip U16. The second capacitor circuit connected to the N contact and the XOUT contact, the second resistor circuit connected to the 50MHZ contact of the main control chip U16, and the third resistor circuit connected to the 48MHZ contact of the main control chip U16; the GND contact of the main control chip U16 is connected to the common ground; the first capacitor circuit is connected in parallel with capacitor C127 and capacitor C128; the output ends of the capacitor C127 and the capacitor C128 are connected to the common ground; the first resistor circuit is connected with resistor R107 and resistor R110; the resistor R107 is connected in parallel with the resistor R110; the output end of the resistor R110 is connected to the common ground; the second capacitor circuit is connected with capacitor C133, capacitor C134 and crystal oscillator Y2; the input ends of the capacitor C133 and capacitor C134 are simultaneously connected to the XI of the main control chip U16 N contact; the output ends of the capacitor C133 and the capacitor C134 are connected to the common ground; the two ends of the crystal oscillator Y2 are respectively connected to the XI N contact and the XOUT contact of the main control chip U16; the second resistor circuit is connected with a resistor R108; the third resistor circuit is connected with a resistor R109; the second resistor circuit is connected to the common ground after connecting a capacitor C135; the third resistor circuit is connected to the common ground after connecting a capacitor C136. In actual application, the circuit design can be used to better enhance the performance of the projector in resisting interference from the external power supply or signal end during operation, thereby making the playback picture quality better and improving the viewing experience.

[0022] This application mainly protects the connection method of the drive control circuit, the setting of various functional components, etc. Through specific circuit testing, it can achieve a better stable control effect.

[0023] In some other embodiments, the model of the main control chip U16 is ASM3P2853A.

[0024] The capacitance values ​​of the capacitor C127 and the capacitor C128 are both 0.1U.

[0025] An inductor FB14 is also connected in series between the input ends of the capacitor C127 and the capacitor C128; the model of the inductor FB14 is M10603J680R.

[0026] The model of the crystal oscillator Y2 is a 25NHZ crystal oscillator.

[0027] The resistor R107 and the capacitor C128 are both connected to the same power supply terminal P2P5V.

[0028] The technical effects of solving the technical problem in this application are as follows:

[0029] Compared with the prior art, the utility model provides a high operating stability projector driving control circuit 1 by simultaneously setting a main control chip U16, a first capacitor circuit connected to the VDD contact and the PWDNB contact of the main control chip U16, a first resistor circuit connected to the SSONB contact of the main control chip U16, a second capacitor circuit connected to the XIN contact and the XOUT contact of the main control chip U16, a second resistor circuit connected to the 50MHZ contact of the main control chip U16, and a third resistor circuit connected to the 48MHZ contact of the main control chip U16; the main control chip The GND contact of the chip U16 is connected to the common ground; the first capacitor circuit is connected in parallel with a capacitor C127 and a capacitor C128; the output terminals of the capacitors C127 and C128 are connected to the common ground; the first resistor circuit is connected with a resistor R107 and a resistor R110; the resistor R107 is connected in parallel with the resistor R110; the output terminal of the resistor R110 is connected to the common ground; the second capacitor circuit is connected with a capacitor C133, a capacitor C134 and a crystal oscillator Y2; the input terminals of the capacitors C133 and C134 are simultaneously connected to the XI terminal of the main control chip U16. N contact; the output ends of the capacitor C133 and the capacitor C134 are connected to the common ground; the two ends of the crystal oscillator Y2 are respectively connected to the XIN contact and the XOUT contact of the main control chip U16; the second resistance circuit is connected with a resistor R108; the third resistance circuit is connected with a resistor R109; the second resistance circuit is connected to the common ground after connecting a capacitor C135; the third resistance circuit is connected to the common ground after connecting a capacitor C136. In actual application, the circuit design can be used to better enhance the performance of the projector in resisting interference from the external power supply or signal end during operation, thereby making the playback picture quality better and improving the viewing experience.

[0030] The above-described implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A projector drive control circuit with high operating stability, characterized in that: The main control chip U16 includes a first capacitor circuit connected to the VDD contact and the PWDNB contact of the main control chip U16, a first resistor circuit connected to the SSONB contact of the main control chip U16, a second capacitor circuit connected to the XIN contact and the XOUT contact of the main control chip U16, a second resistor circuit connected to the 50MHZ contact of the main control chip U16, and a third resistor circuit connected to the 48MHZ contact of the main control chip U16; the GND contact of the main control chip U16 is connected to the common ground; the first capacitor circuit is connected in parallel with a capacitor C127 and a capacitor C128; the output ends of the capacitor C127 and the capacitor C128 are connected to the common ground; the first resistor circuit is connected with a resistor R107 and a resistor R11 0; the resistor R107 is connected in parallel with the resistor R110; the output end of the resistor R110 is connected to the common ground; the second capacitor circuit is connected with capacitor C133, capacitor C134 and crystal oscillator Y2; the input ends of the capacitor C133 and capacitor C134 are simultaneously connected to the XIN contact of the main control chip U16; the output ends of the capacitor C133 and capacitor C134 are connected to the common ground; the two ends of the crystal oscillator Y2 are respectively connected to the XIN contact and XOUT contact of the main control chip U16; the second resistor circuit is connected with resistor R108; the third resistor circuit is connected with resistor R109; the second resistor circuit is connected to the common ground through a capacitor C135; the third resistor circuit is connected to the common ground through a capacitor C136.

2. A projector driving control circuit with high operating stability as claimed in claim 1, characterized in that: The model of the main control chip U16 is ASM3P2853A.

3. The high operation stability projector drive control circuit as claimed in claim 1, characterized in that: The capacitance values ​​of the capacitor C127 and the capacitor C128 are both 0.1U.

4. A projector driving control circuit with high operating stability as claimed in claim 3, characterized in that: An inductor FB14 is also connected in series between the input ends of the capacitor C127 and the capacitor C128; the model of the inductor FB14 is M10603J680R.

5. A projector driving control circuit with high operating stability as claimed in any one of claims 1 to 4, characterized in that: The model of the crystal oscillator Y2 is a 25NHZ crystal oscillator.

6. The high operation stability projector drive control circuit as claimed in claim 1, characterized in that: The resistor R107 and the capacitor C128 are both connected to the same power supply terminal P2P5V.

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