IP Library › Granted Patent US 10,389,238
Granted Patent B2
US 10,389,238 · App. 15/927,150 · Granted Aug 20, 2019

Charge pumps and methods of operating charge pumps

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Quick Facts
Patent No.
US 10,389,238
App. No.
15/927,150
Granted
Aug 20, 2019
Kind
B2
Abstract

Methods of operating a charge pump, and charge pumps configured to perform similar methods, involve monitoring a level of a supply voltage of the charge pump, and turning off an oscillator of the charge pump responsive to the level of the supply voltage dropping below a certain level, wherein turning off the oscillator comprises setting an inverter in a ring oscillator loop of the oscillator to a steady state output.

Claims (7)

1. A method for operating a change pump, comprising:

monitoring a level of a supply voltage of a charge pump; and

turning off an oscillator of the charge pump responsive to the level of the supply voltage dropping below a certain level;

wherein turning off the oscillator comprises setting an inverter in a ring oscillator loop of the oscillator to a steady state output;

wherein the supply voltage is a first supply voltage, and wherein the oscillator is connected to receive a second supply voltage higher than the first supply voltage during normal operation of the charge pump;

wherein a voltage level of the second supply voltage is independent of a voltage level of the first supply voltage; and

wherein the first supply voltage is a supply voltage for a first voltage domain and the second supply voltage is a supply voltage for a second voltage domain.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Nov 12, 2019
From: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
To: MICRON TECHNOLOGY, INC.; MICRON SEMICONDUCTOR PRODUCTS, INC.
Reel/Frame 051028/0001 →
RELEASE OF SECURITY INTEREST Recorded Oct 10, 2019
From: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
To: MICRON TECHNOLOGY, INC.
Reel/Frame 050709/0965 →
SECURITY INTEREST Recorded Jul 13, 2018
From: MICRON TECHNOLOGY, INC.; MICRON SEMICONDUCTOR PRODUCTS, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 047540/0001 →
SUPPLEMENT NO. 8 TO PATENT SECURITY AGREEMENT Recorded May 7, 2018
From: MICRON TECHNOLOGY, INC.
To: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
Reel/Frame 046084/0955 →