US 11,815,928 B2
Supply-glitch-tolerant regulator
Viktor Zsolczai, Szolnok (HU); Andras V. Horvath, Budapest (HU); and Peter Onody, Budapest (HU)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Dec. 19, 2022, as Appl. No. 18/084,309.
Application 18/084,309 is a continuation of application No. 17/119,653, filed on Dec. 11, 2020, granted, now 11,561,563.
Prior Publication US 2023/0229183 A1, Jul. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G05F 1/575 (2006.01); G05F 1/46 (2006.01); G05F 3/26 (2006.01)
CPC G05F 1/575 (2013.01) [G05F 1/468 (2013.01); G05F 3/262 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A supply-glitch-tolerant voltage regulator comprising:
a regulated voltage node;
an output transistor having a source terminal, a gate terminal, and a drain terminal, the source terminal being coupled to the regulated voltage node;
a first current generator coupled between a first node and a first power supply node;
a second current generator coupled between the first node and a second power supply node;
a feedback circuit coupled to the first current generator and the second current generator and configured to adjust a voltage on the first node based on a reference voltage and a voltage level on the regulated voltage node;
a diode coupled between the drain terminal and the first power supply node;
a resistor coupled between the gate terminal and the first node; and
a compensation capacitor coupled to the gate terminal, the resistor and the compensation capacitor having a time constant R×C greater than a target glitch tolerance of the supply-glitch-tolerant voltage regulator, where R is a resistance of the resistor and C is a capacitance of the compensation capacitor.