The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2014
Filed:
Feb. 08, 2013
Sandisk Technologies Inc., Plano, TX (US);
Shankar Guhados, Fremont, CA (US);
Sung-En Wang, San Jose, CA (US);
Feng Pan, Fremont, CA (US);
Sagar Magia, Milpitas, CA (US);
Jonathan H. Huynh, San Jose, CA (US);
SanDisk Technologies Inc., Plano, TX (US);
Abstract
Techniques are presented for improving the wake-up response of voltage regulation circuits. A first set of techniques relate to the inputs an op-amp in a regulation circuit. In regulated operation, one input receives feedback from the regulator's output. Instead, during reset, after resetting the op-amp's output node to the supply level, this input of op-amp is instead connected to ground in order to increase the amount of tail current through the op-amp in order to more quickly bring down the op-amp's output node. A detection circuit is introduced to determine when the op-amp's input is reconnected to receive feedback. In a complementary sets of techniques, when the circuit on which the regulator is formed receives an enable signal and the output of the regulator will be needed for an operation, and when the regulator is not yet back at operating levels, its supply is temporarily shorted to the supply level.