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US 10,591,518 B1Granted
Apparatus and system of a low-voltage detector
AssigneeTower Semiconductor Ltd.
InventorsDan Pollak, Valentin Lerner, Sharon Brandelstein Sharkaz
Life of this patent
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Abstract
Some demonstrative embodiments include an apparatus including a low-voltage detector to detect whether a voltage difference between a first voltage of a first voltage domain and a second voltage of the first voltage domain is lower than a predefined voltage.
Claims23
An apparatus comprising a low-voltage detector to detect whether a voltage difference between a first voltage of a first voltage domain and a second voltage of the first voltage domain is lower than a predefined voltage, the low-voltage detector comprising:
- a first current generator configured to generate a first reference current based on a difference between the first voltage of the first voltage domain and the second voltage of the first voltage domain;
- a second current generator configured to generate a second reference current based on a difference between a voltage of a second voltage domain and a reference voltage;
- and
- a detector component to detect whether the voltage difference is lower than the predefined voltage based on the first reference current and the second reference current, wherein the detector component comprises a current mirror configured to generate a mirrored reference current based on the first reference current, the detector component configured to detect whether the voltage difference is lower than the predefined voltage based on a comparison between the mirrored reference current and the second reference current.
1 more element
An electronic device comprising:
- a DC to DC (DC-DC) converter comprising:
- a first driver to drive a first switch based on a first voltage of a first voltage domain and a second voltage of the first voltage domain;
- a second driver to drive a second switch based on a first voltage of a second voltage domain and a second voltage of the second voltage domain;
- and
- a low-voltage detector to detect whether a voltage difference between the first voltage of the first voltage domain and the second voltage of the first voltage domain is lower than a predefined voltage, the low-voltage detector comprising:
- a first current generator configured to generate a first reference current based on a difference between the first voltage of the first voltage domain and the second voltage of the first voltage domain;
- a second current generator configured to generate a second reference current based on a difference between the first voltage of the second voltage domain and a reference voltage;
- and
- a detector component to detect whether the voltage difference is lower than the predefined voltage based on the first reference current and the second reference current, wherein the detector component comprises a current mirror configured to generate a mirrored reference current based on the first reference current, the detector component configured to detect whether the voltage difference is lower than the predefined voltage based on a comparison between the mirrored reference current and the second reference current.
6 more elements
Dependencies are inferred from the claim text.