US 11,923,831 B2
Bootstrapped switch
Shih-Hsiung Huang, Hsinchu (TW)
Assigned to REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed by REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed on May 31, 2022, as Appl. No. 17/828,516.
Claims priority of application No. 110135350 (TW), filed on Sep. 23, 2021.
Prior Publication US 2023/0091800 A1, Mar. 23, 2023
Int. Cl. H03K 17/06 (2006.01); H03K 17/0412 (2006.01); H03K 19/017 (2006.01)
CPC H03K 17/063 (2013.01) [H03K 17/04123 (2013.01); H03K 19/01735 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A bootstrapped switch that receives an input voltage and outputs an output voltage, comprising:
a first transistor having a first terminal, a second terminal, and a first control terminal, wherein the first transistor receives the input voltage at the first terminal and outputs the output voltage at the second terminal;
a first capacitor having a third terminal and a fourth terminal;
a second transistor having a fifth terminal, a sixth terminal, and a second control terminal, wherein the second transistor receives the input voltage at the fifth terminal, the sixth terminal is electrically connected to the third terminal of the first capacitor, and the second control terminal is electrically connected to the first control terminal of the first transistor;
a first switch coupled between the third terminal of the first capacitor and a first reference voltage;
a second switch coupled between the fourth terminal of the first capacitor and a second reference voltage;
a third switch coupled between the fourth terminal of the first capacitor and the first control terminal of the first transistor;
a fourth switch coupled to the first control terminal of the first transistor and having a third control terminal;
a fifth switch coupled between the fourth switch and the first reference voltage and having a fourth control terminal;
a second capacitor having a seventh terminal and an eighth terminal, wherein the seventh terminal is coupled to the third control terminal, and the eighth terminal is coupled to the fourth control terminal; and
a resistor coupled between the third control terminal and the second reference voltage.