CN-224232155-U - Control circuit for automatic power-on and power-off of hard disk socket

Abstract

The utility model relates to a control circuit for automatic power-on and power-off of a hard disk socket, which comprises a hard disk interface SATA1, wherein the hard disk interface SATA1 is connected with a detection control circuit, the detection control circuit comprises a MOS tube Q16, the grid electrode of the MOS tube Q16 is connected to a GND4 pin of the hard disk interface SATA1, the grid electrode of the MOS tube Q16 is also connected with a resistor R72, the resistor R72 is connected with an external main board power supply, the drain electrode of the MOS tube Q16 is connected with a resistor R73 and a capacitor C156, the resistor R73 is connected with the external main board power supply, the capacitor C156 is grounded, the drain electrode of the MOS tube Q16 is also connected with a power switch circuit, and the power switch circuit is also connected with the external main board power supply, so that the surge phenomenon can not be caused at the moment of inserting a hard disk through the circuit.

Inventors

• CHEN CHEN

Assignees

• 深圳市智微智能科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250430

Claims (6)

1. 1. A control circuit for automatic power on and power off of a hard disk socket comprises a hard disk interface SATA1 and is characterized in that the hard disk interface SATA1 is connected with a detection control circuit for automatically detecting and controlling a hard disk, the detection control circuit comprises a MOS tube Q16, the grid electrode of the MOS tube Q16 is connected to a GND4 pin of the hard disk interface SATA1, a resistor R72 is further connected to the grid electrode of the MOS tube Q16, the resistor R72 is connected with an external main board power supply, the drain electrode of the MOS tube Q16 is connected with a resistor R73 and a capacitor C156, the resistor R73 is connected with the external main board power supply, the capacitor C156 is grounded, the drain electrode of the MOS tube Q16 is further connected with a power switch circuit, the power switch circuit is connected with the external main board power supply, the power switch circuit is further connected with the hard disk interface SATA1, and the source electrode of the MOS tube Q16 is grounded.
2. 2. The automatic power-on and power-off control circuit for the hard disk socket according to claim 1, wherein the power switch circuit comprises a first switch circuit for providing 12V voltage and a second switch circuit for providing 5V voltage, the first switch circuit and the second switch circuit are connected with the drain electrode of the MOS tube Q16, and the first switch circuit and the second switch circuit are also connected with a hard disk interface SATA 1.
3. 3. The automatic power-on and power-off control circuit for the hard disk socket according to claim 2 is characterized IN that the first switch circuit comprises a first switch chip U29, a pin EN of the first switch chip U29 is connected with a drain electrode of a MOS tube Q16, an input pin IN of the first switch chip U29 is connected with a capacitor C146, the capacitor C146 is grounded, an input pin IN of the first switch chip U29 is also connected with a main board power supply for providing 12V voltage to the outside, a power-off pin CUT of the first switch chip U29 is connected with a hard disk interface SATA1, a power-off pin CUT of the first switch chip U29 is also connected with a capacitor C150, a capacitor C153 and a capacitor C155, the capacitor C150 is grounded, the capacitor C153 and the capacitor C155 are also both connected with the capacitor C150, and the first switch chip U29 is also grounded.
4. 4. The automatic power-on and power-off control circuit for a hard disk socket according to claim 3, wherein a capacitor C169 is connected to a pin SST of the first switch chip U29, and the capacitor C169 is grounded.
5. 5. The automatic power-on and power-off control circuit for the hard disk socket according to claim 2 is characterized IN that the second switch circuit comprises a second switch chip U28, a pin EN of the second switch chip U28 is connected with a drain electrode of a MOS tube Q16, an input pin IN of the second switch chip U28 is connected with a capacitor C144, the capacitor C144 is grounded, an input pin IN of the second switch chip U28 is also connected with a main board power supply for providing 5V voltage to the outside, a power-off pin CUT of the second switch chip U28 is connected with a hard disk interface SATA1, a power-off pin CUT of the second switch chip U28 is also connected with a capacitor C147, a capacitor C148 and a capacitor C149, the capacitor C147 is grounded, the capacitor C148 and the capacitor C149 are also both connected with the capacitor C147, and the second switch chip U28 is grounded.
6. 6. The automatic power-on and power-off control circuit for a hard disk socket according to claim 5, wherein a capacitor C168 is connected to a pin SST of the second switch chip U28, and the capacitor C168 is grounded.

Description

Control circuit for automatic power-on and power-off of hard disk socket Technical Field The utility model relates to the field of hard disk control circuits, in particular to a control circuit for automatic power-on and power-off of a hard disk socket. Background SATA hard disk is one of the most common peripheral devices of a computer, and with the development of technology and the demand of users for convenience, many mainboards start to support hot plug of SATA hard disk. The hot plug of the hard disk refers to that the hard disk is plugged into or pulled out of the system without influencing the normal operation of the system under the condition of not closing the power supply of the system, thereby improving the convenience, the quick maintainability and the like of the computer system. The hot plug of the hard disk relates to the power supply of the hard disk, and in the traditional SATA interface design, the power socket is in a live state before the hard disk is plugged into the SATA power socket of the main board, so that the hard disk plugged into the power socket can be powered at any time. The disadvantage of this is that when the hard disk is plugged into a power socket, the power supply is connected to the hard disk instantaneously, which causes surge current or voltage spike instantaneously, and such electric shock may damage not only the hard disk control chip but also the power management module of the main board. Disclosure of utility model Aiming at the defects in the prior art, the control circuit for automatically powering on and powering off the hard disk socket is provided. The technical scheme includes that the control circuit for automatically powering on and powering off a hard disk socket comprises a hard disk interface SATA1, wherein the hard disk interface SATA1 is connected with a detection control circuit for automatically detecting and controlling a hard disk, the detection control circuit comprises a MOS tube Q16, the grid electrode of the MOS tube Q16 is connected to a GND4 pin of the hard disk interface SATA1, the grid electrode of the MOS tube Q16 is further connected with a resistor R72, the resistor R72 is connected with an external main board power supply, the drain electrode of the MOS tube Q16 is connected with a resistor R73 and a capacitor C156, the resistor R73 is connected with the external main board power supply, the capacitor C156 is grounded, the drain electrode of the MOS tube Q16 is further connected with a power switch circuit, the power switch circuit is further connected with the external main board power supply, and the source electrode of the MOS tube Q16 is grounded. Preferably, the power supply switch circuit comprises a first switch circuit for providing 12V voltage and a second switch circuit for providing 5V voltage, wherein the first switch circuit and the second switch circuit are both connected with the drain electrode of the MOS tube Q16, and the first switch circuit and the second switch circuit are both connected with the hard disk interface SATA 1. Preferably, the first switch circuit includes a first switch chip U29, a pin EN of the first switch chip U29 is connected with a drain electrode of the MOS transistor Q16, an input pin IN of the first switch chip U29 is connected with a capacitor C146, the capacitor C146 is grounded, an input pin IN of the first switch chip U29 is further connected with a motherboard power supply that provides 12V voltage from the outside, a power-off pin CUT of the first switch chip U29 is connected with the hard disk interface SATA1, a power-off pin CUT of the first switch chip U29 is further connected with a capacitor C150, a capacitor C153 and a capacitor C155, the capacitor C150 is grounded, the capacitor C153 and the capacitor C155 are both connected with the capacitor C150, and the first switch chip U29 is also grounded. Preferably, a capacitor C169 is connected to the pin SST of the first switch chip U29, and the capacitor C169 is grounded. Preferably, the second switch circuit includes a second switch chip U28, a pin EN of the second switch chip U28 is connected to a drain electrode of the MOS transistor Q16, an input pin IN of the second switch chip U28 is connected to a capacitor C144, the capacitor C144 is grounded, an input pin IN of the second switch chip U28 is further connected to a motherboard power supply that provides 5V voltage from the outside, a power-off pin CUT of the second switch chip U28 is connected to the hard disk interface SATA1, a power-off pin CUT of the second switch chip U28 is further connected to a capacitor C147, a capacitor C148 and a capacitor C149, the capacitor C147 is grounded, the capacitor C148 and the capacitor C149 are both connected to the capacitor C147, and the second switch chip U28 is grounded. Preferably, a capacitor C168 is connected to the pin SST of the second switch chip U28, and the capacitor C168 is grounded. The utility model has the beneficial effects