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公开(公告)号：US11906994B2
公开(公告)日：2024-02-20
申请号：US17836524
申请日：2022-06-09
IPC分类号： G06F1/00 , G05F1/46 , G06F1/3296
CPC分类号： G05F1/468 , G06F1/3296
摘要： A voltage regulator is embedded in a circuit intermediate a first node (coupled to a battery) and a second node (supplying power to an external memory). The voltage regulator is activatable in a first mode of operation for startup during which an voltage is applied to the second node that increases towards a supply threshold. In response to the voltage at the second node reaching the supply threshold, the voltage regulator transitions to a second mode of operation where a programmable regulated voltage (higher than the supply threshold) is applied to the second node. In response to receipt of a low-power operation request, a first high-drive regulator circuitry is deactivated and a second low-power regulator circuitry is activated to provide a third mode of operation at low power.
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公开(公告)号：US10135399B2
公开(公告)日：2018-11-20
申请号：US15442423
申请日：2017-02-24
摘要： A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.
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公开(公告)号：US20170163222A1
公开(公告)日：2017-06-08
申请号：US15442423
申请日：2017-02-24
CPC分类号： H03F1/086 , H03F1/0205 , H03F1/083 , H03F3/45085 , H03F3/45179 , H03F3/45502 , H03F3/45511 , H03F2200/456 , H03F2203/45008 , H03F2203/45116 , H03F2203/45288 , H03F2203/45418 , H03F2203/45424 , H03F2203/45431
摘要： A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.
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公开(公告)号：US11906995B2
公开(公告)日：2024-02-20
申请号：US17836417
申请日：2022-06-09
摘要： A voltage regulator coupled between a first node and second node includes a first (full-power) regulator circuit and a second (low-power) regulator circuit. In a first mode: the first regulator circuit is activated (with the second regulator circuit inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is kept de-activated when the voltage at the first node is a ground voltage. In a second mode: the first regulator circuitry in is active (with the second regulator circuitry inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is inactive when the voltage at the first node is a ground voltage. In a third mode: the second regulator circuitry is active (with the first regulator circuitry inactive) irrespective of the voltage at the first node being at the battery voltage or the ground voltage.
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公开(公告)号：US09628028B2
公开(公告)日：2017-04-18
申请号：US14746124
申请日：2015-06-22
CPC分类号： H03F1/086 , H03F1/0205 , H03F1/083 , H03F3/45085 , H03F3/45179 , H03F3/45502 , H03F3/45511 , H03F2200/456 , H03F2203/45008 , H03F2203/45116 , H03F2203/45288 , H03F2203/45418 , H03F2203/45424 , H03F2203/45431
摘要： A common-mode feedback circuit includes a transconductor input stage with differential input terminals, and a frequency-compensated gain stage coupled to the transconductor input stage with differential output terminals. The common-mode feedback circuit also includes a feedback loop having a comparator configured to produce a feedback error signal for the transconductor input stage by comparing with a reference a common-mode sensing signal indicative of a common-mode voltage level sensed at the differential output terminals. In addition, the common-mode feedback loop includes a converter for converting the common-mode voltage level sensed at said differential output terminals into a current signal coupled to the comparator.
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