US 11,722,126 B2
Stable level shifters in high slew rate or noisy environments
Shyamsunder Balasubramanian, Plano, TX (US); Michael Edwin Butenhoff, Minnesota City, MN (US); and Toshio Yamanaka, Plano, TX (US)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Aug. 31, 2021, as Appl. No. 17/463,001.
Prior Publication US 2023/0067055 A1, Mar. 2, 2023
Int. Cl. H03K 3/013 (2006.01); H03K 3/356 (2006.01); H03K 3/012 (2006.01); H02K 11/33 (2016.01)
CPC H03K 3/013 (2013.01) [H03K 3/012 (2013.01); H03K 3/356 (2013.01); H02K 11/33 (2016.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a level shifter having voltage source input and first and second outputs;
a first transistor having a first terminal coupled to the first output, and having a second terminal and a control terminal;
a second transistor having a first terminal coupled to the second output, and having a second terminal and a control terminal;
a first current source having a first terminal coupled to the second terminal of the first transistor and to the second terminal of the second transistor, and having a second terminal;
a slew detector having an input coupled to the voltage source input and having an output coupled to the first terminal of the first current source; and
a second current source coupled in parallel between the first and second terminals of the first current source.