08525574 is referenced by 7 patents and cites 12 patents.

In one embodiment, a bootstrap switch circuit has (i) a switch device that selectively provides a input signal as an output signal and bootstrap circuitry that provides a relatively high-voltage control signal to the gate of the switch device to turn on the switch device while preventing any over-voltage conditions from being applied to the switch device. The bootstrap circuitry includes a capacitor and a number of transistors configured as either switches or inverters. The circuit has two operating phases: one in which the capacitor gets charged while the switch device is turned off and the other in which the charged capacitor is isolated and used to generate the high-voltage control signal to be a fixed voltage difference above the current voltage level of the input signal applied to the switch device, thereby preventing an over-voltage condition.

Title
Bootstrap switch circuit with over-voltage prevention
Application Number
13/471659
Publication Number
8525574 (B1)
Application Date
May 15, 2012
Publication Date
September 3, 2013
Inventor
Abhishek Duggal
Emmaus
PA, US
Agent
Steve Mendelsohn
Mendelsohn Drucker & Dunleavy P C
Assignee
LSI Corporation
CA, US
IPC
H03K 17/16
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