A chip and electronic device

A chip and resistor technology, applied in the field of chip power supply, can solve problems such as poor compatibility and limited power supply range of off-chip power supply circuits, and achieve the effect of improving compatibility and increasing power supply range

Active Publication Date: 2021-07-23
BEIJING CELLIX REVEALING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the voltage provided by the off-chip power supply circuit cannot exceed the withstand voltage of the internal load of the chip, the power supply range of the off-chip power supply circuit is limited and the compatibility is poor.

Method used

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  • A chip and electronic device
  • A chip and electronic device

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Embodiment Construction

[0026] The characteristics and exemplary embodiments of various aspects of the application will be described in detail below. In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only intended to explain the present application rather than limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and d...

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Abstract

The embodiment of the present application provides a chip and electronic equipment, the chip includes a power supply circuit, the power supply circuit: a first on-chip LDO circuit, a second on-chip LDO circuit, an off-chip power supply circuit, a pin PAD, and a load power input terminal . The first on-chip LDO circuit includes a first MOS tube, a first operational amplifier, and a resistor component. The second on-chip LDO circuit includes a second MOS tube and a resistor component. The first on-chip LDO circuit and the second on-chip LDO circuit pass through a resistor component. connect. The off-chip power supply is connected to the inside of the chip through the pin PAD, and connected to the drain of the first MOS transistor. The external voltage is divided by the resistance component to ensure that the voltage at the input terminal of the load power supply is within the withstand voltage range of the internal load of the chip, so that the external voltage is no longer limited by the withstand voltage of the internal load of the chip, and the power supply range of the off-chip power supply circuit is increased. , Improve the compatibility of the chip power supply circuit.

Description

technical field [0001] The present application belongs to the field of chip power supply, and in particular relates to a chip and electronic equipment. Background technique [0002] At present, there are two power supply methods for the internal load of the chip: on-chip low dropout regulator (Low Dropout Regulator, LDO) circuit power supply and off-chip power supply circuit. Wherein, the off-chip power supply circuit is connected with the power supply input end of the internal load of the chip through the pin PAD. When the power is supplied by the on-chip LDO circuit, the off-chip power supply circuit does not supply power. When the off-chip power supply circuit supplies power, the on-chip LDO circuit does not supply power. Since the voltage provided by the off-chip power supply circuit cannot exceed the withstand voltage of the internal load of the chip, the power supply range of the off-chip power supply circuit is limited and the compatibility is poor. Contents of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/06
Inventor 赵克新程亚萍
Owner BEIJING CELLIX REVEALING TECH
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