Standby power switching circuit and solid state disk power protection circuit

Abstract

The invention provides a standby power switching circuit and a solid state disk power protection circuit, the standby power switching circuit comprises a boost circuit, an energy storage circuit, a first step-down circuit and a standby power switching device, the input end of the boost circuit is connected with a main power supply of a target object; the output end is connected with the first end of the energy storage circuit and the input end of the first step-down circuit; the second end of the energy storage circuit is grounded; the output end of the first step-down circuit is connected with the first input end of the standby power switching device; the second input end of the standby power switching device is connected with the main power supply, and the output end is connected with the power supply end of the target object; and when the standby power switching device detects that the first voltage of the first input end is greater than the second voltage of the second input end, the voltage output by the first step-down circuit is switched to supply power to the target object. Therefore, automatic switching of the standby power circuit is realized through a pure hardware circuit mode, adjustment or setting of parameters is not needed, and the reliability and stability of the target object during abnormal power-off are improved.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a backup power switching circuit and a solid-state hard disk power protection circuit. Background technique [0002] As we all know, compared with the mechanical hard disk (Hard Disk Drive, referred to as HDD), solid state disk (Solid State Disk, referred to as SSD) has greater advantages in terms of speed, power consumption, capacity, noise, reliability and other performance. At this stage, although the former There are certain advantages in price, but with the emergence of large-capacity flash memory chips (Flash EEPROM Memory, referred to as FLASH) flash memory particles, the price of SSD will become lower and lower, making it more widely used in servers, storage and other equipment . However, in the field of servers and storage, enterprise-level SSDs are different from consumer-level SSDs. When the SSD is abnormally powered off, it can ensure that the DRAM data is refreshed...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a backup power switching circuit and a solid-state hard disk power protection circuit to overcome the need to adjust the parameters of the chip that performs the function in the prior art for power-down protection of the SSD. And the way of setting, the operation process is complex and the operator has high requirements

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