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公开(公告)号：US20240339928A1
公开(公告)日：2024-10-10
申请号：US18605031
申请日：2024-03-14
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Nadim Khlat , Hui Liu , David Edward Reed , Christopher T. Brown
CPC classification number: H02M3/156 , H02M1/0009
Abstract: Systems and methods for providing a direct current-to-direct current (DC-DC) converter with programmable compensation are disclosed. In one aspect, a power management chip having a DC-DC converter measures process, voltage, and temperature (PVT) variations and provides a dynamic compensation circuit (e.g., using programmable digital-to-analog converters (DACs)) to offset such PVT variations. Further, changes in frequency may be detected, and additional compensation values provided. Providing compensation in this manner allows the DC-DC converter's performance to be more efficient, resulting in better performance and power savings.
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公开(公告)号：US20240339918A1
公开(公告)日：2024-10-10
申请号：US18616740
申请日：2024-03-26
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Nadim Khlat , Hui Liu , David Edward Reed
CPC classification number: H02M1/0048 , H02M1/44 , H02M3/155
Abstract: Systems and methods for improving efficiency in a power management circuit are disclosed. In one aspect, a ping-pong sample and hold circuit smooth transitions from buck to boost (and vice versa) modes of operation for a direct current-to-direct current (DC-DC) converter in the power management circuit. The ping-pong sample and hold circuit provide a ramp compensation for each clock cycle, where transitions are smoothed by holding the last value used from the previous mode of operation. In a second aspect, a current sensor is used that integrates a current value to provide a base feedback loop for the DC-DC converter and may use various compensation factors to provide a proper ramp signal for the DC-DC converter.
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公开(公告)号：US20250023524A1
公开(公告)日：2025-01-16
申请号：US18899554
申请日：2024-09-27
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Stephen James Franck , Hui Liu , Jungmin Park
Abstract: A protection circuit for an acoustic filter and/or a power amplifier is disclosed. In one aspect, the protection circuit includes a bidirectional coupler that helps secure a measurement of power at an antenna. The power measurement is compared to a threshold by a detector, and if the power measurement is above the threshold, a signal is sent that causes debiasing of a power amplifier stage, which reduces power levels of signals being amplified by the power amplifier stage and correspondingly lowers the power level going through a filter associated with the power amplifier stage. By lowering the power level going through the power amplifier stage and the filter, both elements are protected against overpower conditions, allowing functionality to be maintained.
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公开(公告)号：US20230387867A1
公开(公告)日：2023-11-30
申请号：US18130990
申请日：2023-04-05
Applicant: Qorvo US, Inc.
Inventor： George Maxim , Baker Scott , Stephen James Franck , Hui Liu , Ziba Nami
CPC classification number: H03F1/52 , H03F3/21 , H03F2200/171 , H03F2200/426
Abstract: Power protection loops for amplifier chain elements are disclosed. In one aspect, an amplifier chain may have a power detection circuit detect power within the amplifier chain. When the power exceeds a threshold, a control circuit limits amplification provided by amplifier element(s) within the amplifier chain to throttle or lower power levels within the amplifier chain, thereby protecting elements within the amplifier chain. In this fashion, not only may the amplifier element(s) be protected, but also acoustic filter elements may be protected. The threshold used to throttle or lower the power levels may be based on one or more of: a supply voltage, a sensed temperature, and a mode (e.g., 2G, 3G, 4G, 5G). By protecting these elements, these elements survive power surges instead of failing.
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Patent Agency Ranking
公开(公告)号：US20230253930A1
公开(公告)日：2023-08-10
申请号：US17805316
申请日：2022-06-03
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Chong Woo , George Maxim , Sukchan Kang , Hui Liu
CPC classification number: H03F1/52 , H03F3/20 , H03F2200/426 , H03F1/0205
Abstract: A power amplifier with clamp and feedback protection circuitry is disclosed. In one aspect, the power amplifier is initially protected by a fast-acting clamp circuit whose overall size is relatively limited. Subsequent operation allows a comparatively slowly acting feedback loop to dominate the protection of the power amplifier. By providing the two protection circuits, each optimized for a particular phase of protection, the overall size of associated protection circuitry may be diminished while still protecting the power amplifier from failure inducing conditions.
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公开(公告)号：US20230246601A1
公开(公告)日：2023-08-03
申请号：US17589078
申请日：2022-01-31
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Stephen James Franck , Hui Liu , Jungmin Park
CPC classification number: H03F1/52 , H03F3/245 , H03F2200/451 , H03F2200/171 , H03F2200/426
Abstract: A protection circuit for an acoustic filter and/or a power amplifier is disclosed. In one aspect, the protection circuit includes a bidirectional coupler that helps secure a measurement of power at an antenna. The power measurement is compared to a threshold by a detector, and if the power measurement is above the threshold, a signal is sent that causes debiasing of a power amplifier stage, which reduces power levels of signals being amplified by the power amplifier stage and correspondingly lowers the power level going through a filter associated with the power amplifier stage. By lowering the power level going through the power amplifier stage and the filter, both elements are protected against over power conditions allowing functionality to be maintained.
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公开(公告)号：US20250096740A1
公开(公告)日：2025-03-20
申请号：US18729627
申请日：2023-02-03
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Hui Liu , Stephen James Franck
Abstract: A power amplification circuit (600) includes an amplifier circuit (100) and a circuit (602) protecting the amplifier circuit (100) from destructive voltage. The amplifier circuit includes a first cascode transistor (104(1)) coupled to an output node, a last cascode transistor (104(5)) coupled to a reference voltage node (GND), and one or more cascode transistors (104(2)-104(4)) coupled between the first cascode transistor (104(1)) and the last cascode transistor (104(5)). Circuit protecting the amplifier circuit (100) may include a protection circuit (602) to provide a feedback signal to a bias circuit (606) to reduce the bias voltage on the last cascode transistor (104(5)) and/or a stress control circuit (604) coupled to a control terminal of the first cascode transistor (104(1)) to increase the bias voltage on a control terminal of the first cascode transistor (104(1)) to avoid a destructive voltage.
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公开(公告)号：US12170507B2
公开(公告)日：2024-12-17
申请号：US17589078
申请日：2022-01-31
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Stephen James Franck , Hui Liu , Jungmin Park
Abstract: A protection circuit for an acoustic filter and/or a power amplifier is disclosed. In one aspect, the protection circuit includes a bidirectional coupler that helps secure a measurement of power at an antenna. The power measurement is compared to a threshold by a detector, and if the power measurement is above the threshold, a signal is sent that causes debiasing of a power amplifier stage, which reduces power levels of signals being amplified by the power amplifier stage and correspondingly lowers the power level going through a filter associated with the power amplifier stage. By lowering the power level going through the power amplifier stage and the filter, both elements are protected against over power conditions allowing functionality to be maintained.
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公开(公告)号：US20240356424A1
公开(公告)日：2024-10-24
申请号：US18627584
申请日：2024-04-05
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Nadim Khlat , Hui Liu , George Maxim
CPC classification number: H02M1/0003 , H02M3/155 , H03F3/245
Abstract: Systems and methods for dynamic current limits for direct current-to-direct current (DC-DC) converters are disclosed. In one aspect, a DC-DC converter (e.g., a buck-boost converter) having dual current and voltage feedback loops is provided. Information from the voltage feedback loop may be used to set a reference level for the current feedback loop. This information may be further based on information from a ramp compensation circuit and a current limiting circuit. The accumulated information may then be combined with another output from the ramp compensation circuit to control the DC-DC converter. The combination of feedback and elements provides an opportunity to sculpt a voltage output of the DC-DC converter to avoid over and undershooting a target output.
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