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Patent Agency Ranking
公开(公告)号：US20240364217A1
公开(公告)日：2024-10-31
申请号：US18307545
申请日：2023-04-26
Applicant: Cypress Semiconductor Corporation
Inventor： Adrian Lin
CPC classification number: H02M3/157 , H02M1/0009 , H02M1/0012
Abstract: A floating-rail voltage generator and method are provided for use in a switched regulator. Generally, the generator includes a floating-rail reference generator, a current-sinking buffer and a current-sink. The reference generator is operable to generate a reference voltage (VSSHV_REF) equal to an input voltage (VBAT) minus 1.8 V for VBAT between 1.8V and 4.8V, and equal to 0V for VBAT less than 1.8V. The buffer is coupled between VBAT and ground, and operable to receive the VSSHV_REF and generate a continuous floating-rail voltage (VSSHV) on a floating-rail for VBAT between 1.6V and 4.8V. The current-sink is operable to receive VSSHV_REF and VSSHV, and to turn on a current sinking switch coupled between the floating-rail and ground by setting a set-reset latch having a latch output coupled to a gate of the current sinking switch when a transient load current signal is received from a load coupled to the floating-rail.
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公开(公告)号：US20240364288A1
公开(公告)日：2024-10-31
申请号：US18307625
申请日：2023-04-26
Applicant: Cypress Semiconductor Corporation
Inventor： Adrian Lin
CPC classification number: H03G3/30 , H03M1/12 , H03G2201/103
Abstract: Systems, methods, and devices provide sampling for data converters. Methods include receiving a voltage from a voltage source, and identifying transconductance parameters and resistance parameters associated with a data converter, the transconductance parameters identifying a transconductance of the data converter. Methods also include selecting a resistor from a plurality of dynamically selectable resistors based on the resistance parameters, generating, using a programmable gain amplifier, a current based, at least in part, on the selected resistor and the received voltage, and providing the current to the data converter.
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公开(公告)号：US20240364208A1
公开(公告)日：2024-10-31
申请号：US18307517
申请日：2023-04-26
Applicant: Cypress Semiconductor Corporation
Inventor： Adrian Lin
Abstract: A current-sink buffer is provided including a differential amplifier having a closed first-loop to provide a buffered output voltage, and a closed second-loop to sink transients in a load current of an output to ground. The first-loop includes a first transistor with a gate coupled to a reference-voltage, and a source coupled to a current-source; a second transistor with a gate coupled to a drain and the output, and a source coupled to the source of the first transistor; a first current-sink through which a drain of the first transistor is coupled to ground; and a second current-sink through which the second transistor drain is coupled to ground. The second-loop includes a third transistor with a grounded source, a drain coupled to the second transistor drain, and a gate coupled to the first transistor drain, and a capacitor coupled between the gate and drain of the third transistor.
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公开(公告)号：US20240361790A1
公开(公告)日：2024-10-31
申请号：US18307328
申请日：2023-04-26
Applicant: Cypress Semiconductor Corporation
Inventor： Adrian Lin
CPC classification number: G05F1/562 , G05F1/465 , H02M1/0045 , H02M3/156
Abstract: A floating-rail reference generator and method of operating the same are provided. Generally, the generator includes a tracking current source coupled in series with a current scaling resistor between an input voltage (VBAT) and ground. The tracking current source is operable to receive a reference voltage and couple a tracking current through the resistor to produce a floating-rail reference voltage (VSSHV_REF) at an output between the tracking current source and scaling resistor, wherein: VSSHV_REF=((VBAT-VGS)/k)·1/R·k·R, where VGS is a desired constant potential difference between VBAT and VSSHV_REF, k is a voltage scaling ratio, and R is a resistance of the current scaling resistor. In some embodiments, the tracking current source includes a transistor coupled between VBAT and the output, and controlled by a differential amplifier.
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公开(公告)号：US20240295890A1
公开(公告)日：2024-09-05
申请号：US18177039
申请日：2023-03-01
Applicant: Cypress Semiconductor Corporation
Inventor： Adrian Lin
Abstract: A low-dropout (LDO) regulator includes a voltage reference node and a one-stage differential amplifier coupled to the voltage reference node. The one-stage differential amplifier includes: a differential pair of NMOS transistors; a mirroring load comprising a first current source and a PMOS transistor; a direct feed-forward (DFF) loop formed by the PMOS transistor and its parasitic gate-to-drain capacitance during a load transient; and an indirect regulation feedback (IRF) loop formed by the differential pair of NMOS transistors, a resistor, and the PMOS transistor to provide direct current (DC) voltage regulation.
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