US 12,034,378 B2
Hybrid multi-level inverter and charge pump
Orlando Lazaro, Cary, NC (US); Yogesh Kumar Ramadass, San Jose, CA (US); and Nan Xing, Allen, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Nov. 11, 2022, as Appl. No. 17/985,190.
Application 17/985,190 is a continuation of application No. 17/389,926, filed on Jul. 30, 2021, granted, now 11,502,619.
Prior Publication US 2023/0072847 A1, Mar. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 7/483 (2007.01); H02M 3/07 (2006.01); H02M 1/00 (2006.01)
CPC H02M 7/4835 (2021.05) [H02M 3/07 (2013.01); H02M 1/0095 (2021.05)] 25 Claims
OG exemplary drawing
 
4. An apparatus, comprising:
a capacitor having first and second capacitor terminals;
a first switch coupled between a first terminal and the first capacitor terminal;
a second switch having second switch terminals and a second switch control terminal, a first one of the second switch terminals coupled to the first terminal, a second one of the second switch terminals coupled to a second terminal, a third one of the second switch terminals coupled to the second capacitor terminal, the second switch configured to connect between the first one and the third one of the second switch terminals responsive to the second switch control terminal having a first state, and connect between the second one and the third one of the second switch terminals responsive to the second switch control terminal having a second state;
a third switch having third switch terminals and a third switch control terminal, a first one of the third switch terminals coupled to the first capacitor terminal, a second one of the third switch terminals coupled to the second capacitor terminal, and a third one of the third switch terminals coupled to a power output, the third switch configured to connect between the first one and the third one of the third switch terminals responsive to the third switch control terminal having a third state, and connect between the second one and the third one of the third switch terminals responsive to the third switch control terminal having a fourth state; and
a controller having control outputs coupled to the second and third switch control terminals, the controller configured to:
at a first time, set the second switch control terminal to the second state and the third switch control terminal to the fourth state; and
at a second time after the first time, set the third switch control terminal to the third state.