US 12,456,976 B2
Switch circuit control
Sean Patrick McEnroe, Mckinney, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Feb. 27, 2023, as Appl. No. 18/175,300.
Prior Publication US 2024/0291482 A1, Aug. 29, 2024
Int. Cl. H03K 17/68 (2006.01); H03K 17/687 (2006.01); H03K 19/017 (2006.01)
CPC H03K 17/6871 (2013.01) [H03K 19/01714 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a shutoff circuit having an input and including a first transistor having a control terminal and first and second terminals;
a switch circuit including a second transistor having a control terminal and first and second terminals, the control terminal of the second transistor is coupled to the first terminal of the first transistor, and the first terminal of the second transistor is coupled to the second terminal of the first transistor;
a first capacitor having a first terminal coupled to a voltage terminal, and having a second terminal;
a second capacitor having a first terminal coupled to the second terminal of the first capacitor, and having a second terminal coupled to the second terminal of the first transistor and to the first terminal of the second transistor;
a first diode having a first anode and a first cathode, the first anode is coupled to the second terminal of the first capacitor and to the first terminal of the second capacitor, and the first cathode is coupled to the input of the shutoff circuit;
a second diode having a second anode and a second cathode, the second anode is coupled to the second terminal of the second capacitor, to the second terminal of the first transistor, and to the first terminal of the second transistor, and the second cathode is coupled to the first anode, to the second terminal of the first capacitor, and to the first terminal of the second capacitor; and
a third diode having a third anode and a third cathode, the third anode is coupled to the second terminal of the first capacitor, to the first terminal of the second capacitor, to the first anode, and to the second cathode, and the third cathode is coupled to the control terminal of the second transistor and to the first terminal of the first transistor.