US 12,294,211 B2
Integrated circuit with electrostatic discharge protected power supply
Karim Thomas Taghizadeh Kaschani, Freising (BY); Michael Lüders, Inzell (DE); and Cetin Kaya, Plano, TX (US)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Mar. 25, 2022, as Appl. No. 17/704,205.
Claims priority of provisional application 63/165,867, filed on Mar. 25, 2021.
Prior Publication US 2022/0311242 A1, Sep. 29, 2022
Int. Cl. H02H 9/02 (2006.01); H02H 9/00 (2006.01)
CPC H02H 9/005 (2013.01) [H02H 9/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An integrated circuit (IC), comprising:
an ESD protection circuit coupled between a first rail supply node and a second rail supply node, the ESD protection circuit including:
a slew rate detector coupled between the first and second rail supply nodes;
an amplifier coupled to an output of the slew rate detector and configured to receive an input signal with a first slew rate and provide an output signal with a greater second slew rate;
a one-shot coupled to an output of the amplifier; and
a clamp circuit coupled to an output of the one-shot and configured to provide a low-resistance path between the first and second rail supply nodes responsive to the one-shot, the clamp circuit including a plurality of discharge paths, each discharge path in the plurality of discharge paths being operable to shunt a portion of an ESD signal received at the first rail supply node.