Power supply sequential circuit and power supply method

Abstract

The invention aims to provide a power supply sequential circuit and a power supply method. The power supply sequential circuit of a time sequence device comprises a detection circuit, a conversion circuit and a normal circuit; the detection circuit is used for switching a circuit for supplying power to the time sequence device, so that the power supply sequential circuit supplies power to the timesequence device through the conversion circuit if an abnormal condition occurs, and if the abnormal condition does not occur, the power supply sequential circuit supplies power to the time sequence device through the normal circuit; and the conversion circuit is used for converting a power end voltage of the time sequence device into an input end voltage of a load point power supply to supply power to the time sequence device. The power supply sequential circuit has the advantages that: the voltage of a control end or an auxiliary power supply of the time sequence device can be effectively ensured to be powered on earlier than a power end and powered off later than the power end, and devices are prevented from being damaged; the power supply sequential circuit can be suitable for variousdevices or modules with time sequence requirements, and can meet the high-power requirements of 5G communication for wireless products.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a power sequence circuit and a power supply method. Background technique [0002] Today, wireless products in 5G communications use a large number of devices with timing requirements, such as gallium nitride devices. These timing-required devices require that the voltage of the control terminal or the auxiliary power supply be powered on earlier than the power terminal and then powered off later to prevent damage to the device. [0003] Among them, gallium nitride (GaN) technology is the product trend of power amplifiers, which can provide high efficiency and high frequency for power amplifiers, and gallium nitride technology will also become an increasingly competitive technology for power amplifiers. Technological advances in GaN are moving towards the design of integrated modules. GaN modules require a powerful auxiliary power supply. However, GaN devices have stringent t...

AI Technical Summary

Problems solved by technology

[0004] However, based on existing technical solutions, some existing solutions cannot meet the high power requirements of 5G communication for auxiliary circuits

Moreover, in order to meet the above timing requirements, the solutions in the prior art generally require the addition of expensive devices in the existing design, such as the use of DC-DC converters, which are costly and need to be improved

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