TW202023158A - Power system and power controlling method - Google Patents

Abstract

A power system and a power controlling method are provided. The power system includes a power supply, a sensor, and a slew-rate adjustment module. The power supply is used to provide a power supply with a slew rate. The sensor is configured to receive an audio signal generated by the power supply during operation. The slew-rate adjustment module is configured to dynamically adjust the slew rate according to the audio signal.

Description

Power supply system and power control method

The present invention relates to a power supply system and a power control method, and particularly relates to a power supply system and a power control method for dynamically adjusting the conversion rate of the power supply.

Generally speaking, an electronic device uses a power supply or a power chip of the electronic device to obtain the power required by the electronic device during operation. However, when the power supply provides power, the power supply will quickly and periodically switch the internal switch to provide power. This causes the circuit board of the electronic device to vibrate, which in turn generates noise. As a result, the user's experience of using the electronic device will be reduced, and even return or exchange of the electronic device after being purchased may occur.

The present invention provides a power supply system and a power control method for reducing noise generated by a power supply during operation.

The power supply system of the present invention is used to provide power for electronic devices. The power system includes a power supply, a sensor, and a conversion rate adjustment module. The power supply is arranged on the circuit board of the electronic device. The power supply is used to provide power with a conversion rate. The sensor is arranged on the circuit board. The sensor is used to receive the audio signal generated by the circuit board when the power supply is operating. The conversion rate adjustment module is coupled to the power supply and the sensor. The conversion rate adjustment module is used for dynamically adjusting the conversion rate according to the audio signal.

In an embodiment of the present invention, the aforementioned conversion rate adjustment module is also used to store audio signals.

In an embodiment of the present invention, the above-mentioned conversion rate adjustment module is further used to adjust the conversion rate according to the signal strength in the frequency range of the audio signal. The frequency range includes 2000 Hz to 5000 Hz.

In an embodiment of the present invention, the aforementioned conversion rate adjustment module is also used to read the signal strength in the frequency range of the audio signal, determine whether the signal strength is greater than the preset strength, and when it is determined that the signal strength is greater than the preset strength In case of strength, it provides adjustment commands to reduce the conversion rate.

In an embodiment of the present invention, the above-mentioned conversion rate adjustment module is further used to store adjustment commands, and when the power supply provides power, the power supply provides power with the adjusted conversion rate according to the adjustment commands.

In an embodiment of the present invention, the conversion rate adjustment module described above is also used to read the signal intensity in the frequency range of the audio signal, and determine whether the signal intensity is greater than the preset intensity and the duration is greater than the preset duration. And when it is determined that the duration is longer than the preset duration, an adjustment command to reduce the conversion rate is provided.

In an embodiment of the present invention, the aforementioned sensor is a microphone device.

The power control method of the present invention is used to control a power supply of an electronic device to provide power to the electronic device. The power control method includes: enabling the power supply to provide power with a conversion rate, wherein the power supply is arranged on the circuit board of the electronic device; receiving the audio signal generated by the circuit board when the power supply is operating; and dynamically according to the audio signal Adjust the conversion rate.

Based on the above, the present invention dynamically adjusts the conversion rate of the power supply according to the audio signal generated by the power supply during operation. In this way, the noise generated by the power supply during operation can be reduced, thereby improving the user's experience of using the electronic device.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below and described in detail in conjunction with the accompanying drawings.

Please refer to FIG. 1, which is a schematic diagram of a power supply system according to an embodiment of the present invention. In this embodiment, the power supply system 100 is used to provide power P for the electronic device. The power supply system 100 includes a power supply 110, a sensor 120 and a conversion rate adjustment module 130. The power supply 110 is disposed on the circuit board CB of the electronic device. The circuit board CB may be, for example, a main board or other expansion circuit boards. The power supply 110 is used to provide a power supply P with a slew rate. The power supply 110 of this embodiment may be, for example, a power supply used to provide conventional VCORE, VccGT, etc. power, but the present invention is not limited thereto. The sensor 120 is used for receiving the audio signal AU generated by the power supply 110 during operation. In this embodiment, the sensor 120 is disposed on the circuit board CB to facilitate the power supply 110 to receive the audio signal AU generated by the circuit board CB due to vibration during operation. The sensor 120 of the embodiment may be realized by a microphone device. The conversion rate adjustment module 130 is coupled to the power supply 110 and the sensor 120. The conversion rate adjustment module 130 is used for dynamically adjusting the conversion rate according to the audio signal AU. In this embodiment, the conversion rate adjustment module 130 may be a hardware device or a firmware device (for example, a BIOS) provided outside the circuit board CB. In some embodiments, the conversion rate adjustment module 130 may be a physical device or a firmware device provided outside the circuit board CB. In some embodiments, the conversion rate adjustment module 130 may be an application program. The number of power supplies and the number of sensors of the present invention can be one or more, which is not limited to this embodiment.

Generally speaking, the preset conversion rate of the power supply P is relatively large. The power supply 110 provides a power source P with a larger conversion rate, so that the power source P has a shorter rise time. The shorter the rise time helps the electronic device to quickly obtain the expected power for normal operation, thereby ensuring that the electronic device can be operated stably. However, the power supply P with a larger conversion rate will produce a larger noise. Therefore, the setting of the conversion rate of the power supply P will be a trade off behavior. In fact, each electronic device may not have the same settings. Therefore, in this embodiment, when the power supply 110 is operating, the sensor 120 will receive signals from the circuit board CB (from the power supply 110 or the ceramic capacitor element provided on the circuit board CB) due to vibration. The generated audio signal AU. The conversion rate adjustment module 130 adjusts the conversion rate according to the signal strength in a specific frequency range of the audio signal AU.

For further explanation, please refer to FIG. 1 and FIG. 2 at the same time. FIG. 2 is a flowchart of a power control method according to an embodiment of the present invention. In this embodiment, the power supply system 100 causes the power supply 110 to provide the power supply P with a conversion rate in step S210. In step S220, the power supply system 100 receives the audio signal AU generated when the power supply 110 is operating through the sensor 120. The audio signal AU is generated from the power supply 110 and the circuit board CB due to vibration.

To further explain the audio signal AU, the switching frequency of the power supply 110 is usually above 500KHz. The high switching frequency will cause the power supply 110 or the ceramic capacitor element arranged on the circuit board CB to vibrate, and then the circuit board CB Vibration also occurs, which in turn produces noise. The frequency band of the above noise is just in the frequency range (20Hz to 20KHz) that the human ear can hear, so the user can perceive the noise. The frequency band of the noise is different from the sound of the fan and the noise of the external natural environment. Please refer to FIG. 1 and FIG. 3 at the same time. FIG. 3 is a frequency spectrum diagram of an audio signal according to an embodiment of the present invention. In FIG. 3, the horizontal axis of the spectrogram 300 is represented by frequency (unit: Hz), and the vertical axis of the spectrogram 300 is represented by decibels (dB). In the spectrogram 300, the frequency spectrum of the audio signal AU has multiple frequency bands SG1 to SG5. The frequency bands SG2 to SG4 are frequency bands of noise generated by the circuit board CB when the power supply 110 is operating. The center frequency of the band SG2~SG4 is between 2kHz~5kHz. Therefore, when the power supply 110 is operating, the frequency bands SG2 to SG4 of the noise generated by the circuit board CB can be identified from the audio signal AU.

Please go back to Figure 1 and Figure 2. After the power supply system 100 receives the audio signal AU in step S220, it proceeds to step S230. In step S230, the power supply system 100 uses the conversion rate adjustment module 130 to dynamically adjust the conversion rate of the power supply 110 according to the audio signal AU. For example, the conversion rate adjustment module 130 determines the signal strength (ie, volume) in the frequency range of 2 kHz to 5 kHz in the audio signal AU to adjust the conversion rate. If the conversion rate adjustment module 130 determines that the signal strength is greater than the preset strength, the conversion rate adjustment module 130 will reduce the conversion rate. For another example, if the conversion rate adjustment module 130 determines that the signal intensity is less than or equal to the preset intensity, the conversion rate adjustment module 130 will not reduce the conversion rate. In this way, the power supply system 100 can dynamically adjust the power conversion rate according to the audio signal AU generated by the power supply 110 during operation, so as to reduce the noise generated by the power supply 110 during operation.

The step S230 is further described. Please refer to FIG. 1 and FIG. 4 at the same time. FIG. 4 is a flowchart of the power control method shown in step S230 of FIG. 2. In this embodiment, the conversion rate adjustment module 130 reads the signal strength in a frequency range of the audio signal AU in step S410, where the frequency range includes 2 kHz to 5 kHz. In some embodiments, when the conversion rate adjustment module 130 reads the audio signal AU, it can also store the audio signal AU. For example, the conversion rate adjustment module 130 can store the audio signal AU in the storage device. In some embodiments, when the conversion rate adjustment module 130 reads the audio signal AU, it can also store only the characteristic value of the audio signal AU, that is, the signal strength within the aforementioned frequency range.

In step S420, the conversion rate adjustment module 130 determines whether the signal strength is greater than a preset strength. In this embodiment, the preset intensity may be, for example, 2 dB. When the conversion rate adjustment module 130 determines that the signal strength is greater than the preset strength, step S430 is entered. This means that the power supply P has an excessively high conversion rate that causes the circuit board CB to generate loud noises when the power supply 110 is operating. Therefore, in step S430, the conversion rate adjustment module 130 provides an adjustment command CMD for reducing the conversion rate. After providing the adjustment command CMD, the conversion rate adjustment module 130 returns to step S410 to wait for the next audio signal AU to be read. On the other hand, when the conversion rate adjustment module 130 determines in step S420 that the signal strength is less than or equal to the preset strength, it does not provide the adjustment command CMD for reducing the conversion rate, and returns to step S410 to wait for reading The next audio signal AU.

In some embodiments, when the conversion rate adjustment module 130 determines in step S420 that the signal strength is less than or equal to the preset strength, it provides an adjustment command CMD for adjusting the conversion rate to an initial conversion rate. When the conversion rate is adjusted to the initial conversion rate, the power supply 110 can provide the power source P with the maximum conversion rate.

In some embodiments, the adjustment command CMD may be, for example, a flag having at least one bit. For example, the adjustment command CMD is a flag with two bits. The adjustment command CMD has a first bit and a second bit. For the adjustment command CMD used to adjust the conversion rate to the initial conversion rate, the first bit of the adjustment command CMD is "0", and the second bit is "0". That is, the adjustment command CMD has a flag value of "0, 0".

In the above step S430, the adjustment command CMD provided by the conversion rate adjustment module 130 has a flag value of "0, 1". That is, the first bit of the adjustment command CMD is "0", and the second bit is "1". And the conversion rate adjustment module 130 stores the adjustment command CMD, so that when the power supply 110 provides the power P, the power supply 110 provides the power P with the adjusted conversion rate according to the adjustment command CMD. When the conversion rate adjustment module 130 determines in step S420 that the signal strength is less than or equal to the preset strength, it provides an adjustment command CMD with a flag value of "0, 0". For example, the above-mentioned initial conversion rate is twice the conversion rate adjusted according to the adjustment command CMD with a flag value of "0, 1". Further, if the power supply 110 provides the power supply P with the adjusted conversion rate according to the adjustment command CMD with the flag value of "0, 1" and then enters step S430, the adjustment command CMD provided by the conversion rate adjustment module 130 Has a flag value of "1, 0". For example, the conversion rate adjusted according to the adjustment command CMD having a flag value of "0, 1" is twice the conversion rate adjusted according to the adjustment command CMD having a flag value of "1, 0". Therefore, the conversion rate can be further reduced. By analogy, the conversion rate adjusted according to the adjustment command CMD with a flag value of "1, 0" is twice the conversion rate adjusted according to the adjustment command CMD with a flag value of "1, 1".

In some embodiments, if the power supply 110 provides the power supply P with the adjusted conversion rate according to the adjustment command CMD with the flag value of "0, 1", the conversion rate adjustment module 130 determines in step S420 When the intensity of the output signal is less than or equal to the preset intensity, the adjustment command CMD with the flag value of "0, 1" is continuously provided to maintain the current conversion rate. In some embodiments, if the power supply 110 provides the power supply P with the adjusted conversion rate according to the adjustment command CMD with the flag value of "0, 1", the conversion rate adjustment module 130 determines in step S420 When the output signal intensity is less than or equal to the preset intensity, an adjustment command CMD with a flag value of "0, 0" is provided to increase the current conversion rate.

It is worth mentioning here that the power supply system 100 can determine whether to adjust the conversion rate of the power supply P according to the signal strength of a specific frequency band in the audio signal AU. In this way, when the electronic device is shipped from the factory, a conversion rate can be dynamically adjusted by the power system 100 during at least one power-on operation. The adjusted conversion rate is the conversion rate of the power supply 110 dedicated to the electronic device. Moreover, when the power supply 110 provides the power supply P with a conversion rate, the noise emitted by the circuit board CB is not easy to be felt by the user, and the customization effect has been realized to reduce the noise. In addition, when the electronic device is turned on or awakened, for example, the conversion rate can be dynamically adjusted by the power system 100 during at least one boot operation, so that the electronic device can also dynamically adjust the conversion rate on the user side. To adjust.

Please refer to FIG. 5, which is a flowchart of another power control method depicted in step S230 of FIG. 2. In this embodiment, the conversion rate adjustment module 130 reads the signal strength in a frequency range of the audio signal AU in step S510, where the frequency range includes 2 kHz to 5 kHz. The conversion rate adjustment module 130 determines in step S520 whether the duration of the signal intensity greater than the preset intensity is greater than the preset time length. The preset time length may be, for example, 1 second. When the conversion rate adjustment module 130 determines that the duration is greater than the preset time length, it provides an adjustment command CMD for reducing the conversion rate in step S530. After providing the adjustment command CMD, the conversion rate adjustment module 130 returns to step S510 to wait for the next audio signal AU to be read. On the other hand, when the conversion rate adjustment module 130 determines in step S520 that the signal strength is less than or equal to the preset strength, it does not provide the adjustment command CMD for reducing the conversion rate, and returns to step S510 to wait for reading The next audio signal AU. The implementation details of the adjustment command CMD can be sufficiently taught in the embodiment of FIG. 4, so it will not be repeated here.

In summary, the power supply system of the present invention uses the sensor to receive the audio signal generated by the circuit board when the power supply is in operation, and dynamically adjust the conversion rate according to the audio signal. In this way, the noise generated by the power supply during operation can be effectively reduced, thereby improving the user's experience of using the electronic device.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

100: Power system 110: Power supply 120: Sensor 130: Conversion rate adjustment module 300: Spectrogram AU: Audio signal CB: Circuit board CMD: Adjustment command dB: Decibel P: Power S210, S220, S230: Step S410, S420, S430: Steps S510, S520, S530: Steps SG1, SG2, SG3, SG4, SG5: frequency band

FIG. 1 is a schematic diagram of a power supply system according to an embodiment of the invention. FIG. 2 is a flowchart of a power control method according to an embodiment of the invention. FIG. 3 is a frequency spectrum diagram of an audio signal according to an embodiment of the invention. FIG. 4 is a flowchart of the power control method depicted in step S230 of FIG. 2. FIG. 5 is a flowchart of another power control method depicted in step S230 of FIG. 2.

100: Power system

110: power supply

120: Sensor

130: Conversion rate adjustment module

AU: Audio signal

CB: circuit board

CMD: adjustment command

P: Power

Claims (14)

A power supply system for providing power for an electronic device, the power supply system comprising: a power supply, arranged on a circuit board of the electronic device, for providing power with a conversion rate; a sensor, provided On the circuit board, used to receive an audio signal generated by the circuit board when the power supply is in operation; and a conversion rate adjustment module, coupled to the power supply and the sensor, for The audio signal dynamically adjusts the conversion rate. In the power system described in item 3 of the scope of patent application, the conversion rate adjustment module is also used to store the audio signal. According to the power supply system described in item 1 of the scope of patent application, wherein: the conversion rate adjustment module is further used to adjust the conversion rate according to a signal strength in a frequency range of the audio signal, the frequency range including 2000 Hz to 5000 Hz. For example, the power supply system described in item 3 of the scope of patent application, wherein the conversion rate adjustment module is further used to: read the signal intensity in the frequency range of the audio signal, and determine whether the signal intensity is greater than a preset intensity When it is determined that the signal strength is greater than the preset strength, an adjustment command for reducing the conversion rate is provided. For example, in the power supply system described in item 4 of the scope of patent application, the conversion rate adjustment module is further used to: store the adjustment command, and when the power supply provides the power, the power supply provides the power supply according to the adjustment command. Power supply with adjusted conversion rate. For the power supply system described in item 2 of the scope of patent application, the conversion rate adjustment module is further used to: read the signal intensity in the frequency range of the audio signal, and determine that the signal intensity is greater than a preset intensity Whether a duration of is greater than a preset duration, and when it is determined that the duration is greater than the preset duration, an adjustment command for reducing the conversion rate is provided. According to the power supply system described in claim 1, wherein the sensor is a microphone device. A power control method for controlling a power supply of an electronic device to provide power to the electronic device. The power control method includes: enabling the power supply to provide power with a conversion rate, wherein the power supply is disposed on the A circuit board of the electronic device; receiving an audio signal generated by the circuit board when the power supply is in operation; and dynamically adjusting the conversion rate according to the audio signal. The power control method described in item 8 of the scope of patent application further includes storing the audio signal. For the power control method described in claim 8, wherein the step of dynamically adjusting the conversion rate according to the audio signal includes: adjusting the conversion rate according to a signal strength in a frequency range of the audio signal, wherein the The frequency range includes 2000 Hz to 5000 Hz. For the power control method described in item 10 of the scope of patent application, wherein the step of adjusting the conversion rate according to the signal intensity in the frequency range in the audio signal includes: reading the audio signal in the frequency range Signal strength; determine whether the signal strength is greater than a preset strength; and when it is determined that the signal strength is greater than the preset strength, provide an adjustment command to reduce the conversion rate. For the power control method described in claim 11, the step of adjusting the conversion rate according to the signal intensity in the frequency range in the audio signal further includes: storing the adjustment command; and when the power supply provides When the power is used, the power supply is made to provide power with adjusted conversion rate according to the adjustment command. According to the power control method described in item 9 of the scope of patent application, the step of adjusting the conversion rate according to the signal intensity in the frequency range in the audio signal includes: reading the audio signal in the frequency range Signal strength; determine whether the signal strength is greater than a predetermined strength for a duration of time greater than a predetermined duration; when it is determined that the duration of time is greater than the predetermined duration, provide a method for reducing the conversion rate Adjust the order. The power control method according to claim 8, wherein the step of receiving the audio signal generated by the power supply during operation includes: receiving the audio signal by a microphone device.

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