US 12,066,501 B2
Power supply peak current measurement
Michael Andreas Staudenmaier, Munich (DE); Vincent Aubineau, Issy-les-Moulineaux (FR); and Michael Rohleder, Unterschleissheim (DE)
Assigned to NXP USA, Inc., Austin, TX (US)
Filed by NXP USA, Inc., Austin, TX (US)
Filed on Mar. 18, 2021, as Appl. No. 17/205,042.
Claims priority of application No. 20305390 (EP), filed on Apr. 22, 2020.
Prior Publication US 2021/0333334 A1, Oct. 28, 2021
Int. Cl. G01R 31/58 (2020.01); G01R 19/165 (2006.01); G06F 1/28 (2006.01); H04L 9/40 (2022.01)
CPC G01R 31/58 (2020.01) [G01R 19/16571 (2013.01); G06F 1/28 (2013.01); H04L 63/0428 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power supply comprising:
circuitry configured to output a voltage signal on a power output line;
a peak detector configured to monitor a current associated with the voltage signal for an occurrence of a glitch; and
wherein the peak detector includes a comparator configured to compare the monitored current to a predetermined threshold value that depends upon a present operating mode of the power supply;
circuitry configured to output a glitch attack signal from the power supply representing the occurrence of the glitch,
wherein the glitch attack signal is generated if the monitored current exceeds the threshold value;
wherein the circuitry configured to output the glitch attack signal includes a communication interface configured to encrypt and transmit the glitch attack signal.