US 12,278,631 B2
Main board, hot plug control signal generator, and control signal generating method thereof
Wei-Fang Chang, New Taipei (TW); Yu-Chun Chen, New Taipei (TW); Nan-Huan Lin, New Taipei (TW); Chung-Hui Yen, New Taipei (TW); and Shi-Rui Chen, New Taipei (TW)
Assigned to Wiwynn Corporation, New Taipei (TW)
Filed by Wiwynn Corporation, New Taipei (TW)
Filed on May 29, 2024, as Appl. No. 18/677,803.
Application 18/677,803 is a continuation of application No. 17/849,733, filed on Jun. 27, 2022, granted, now 12,047,070.
Claims priority of application No. 111113219 (TW), filed on Apr. 7, 2022.
Prior Publication US 2024/0322827 A1, Sep. 26, 2024
Int. Cl. G06F 13/40 (2006.01); H03K 19/017 (2006.01); H03K 19/17736 (2020.01); H03K 19/1776 (2020.01); H03K 19/17784 (2020.01); H03K 19/20 (2006.01)
CPC H03K 19/1776 (2013.01) [G06F 13/4081 (2013.01); H03K 19/01742 (2013.01); H03K 19/1774 (2013.01); H03K 19/17784 (2013.01); H03K 19/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A hot plug control signal generator, comprising:
a controller, providing a control signal; and
a latch, coupled to the controller, wherein the latch is operated based on an operation power to generate a hot plug control signal,
wherein the latch sets the hot plug control signal to a disabled first logic value according to the control signal, and latches the hot plug control signal at the first logic value,
wherein the hot plug control signal generator is disposed on a main board, and when an abnormal phenomenon occurs in the main board, the controller provides the control signal, so that the latch latches the hot plug control signal at the first logic value,
wherein the main board receives a rack power from a rack power supply, the rack power is different from the operation power, and the hot plug control signal at the first logic value is used to prevent the rack power from being transmitted to an inside of the main board.