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11. 发明授权

US11539293B2 Fast transient response in DC-to-DC converters 有权
公开(公告)号：US11539293B2
公开(公告)日：2022-12-27
申请号：US17146248
申请日：2021-01-11
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Amir Babazadeh
IPC分类号： H02M3/157 , H02M3/16 , H02M3/158
摘要： A capacitor is discharged to a point where ring back in an output voltage across the capacitor is eliminated in response a transient event to high side and low side switching devices conductively coupled to an inductor and the capacitor before turning on the high side switch and varying an output voltage with a change in a load current.

12. 发明申请

US20220393589A1 VOLTAGE CONVERTER WITH FEEDBACK USING VARIABLE PROPORTIONAL GAIN 有权
公开(公告)号：US20220393589A1
公开(公告)日：2022-12-08
申请号：US17805291
申请日：2022-06-03
申请人： AES Global Holdings PTE Ltd. , The Regents of the University of Colorado
发明人： Dragan Maksimovic , Faleh Alskran , V. Inder Kumar , Chandan Suthar
IPC分类号： H02M3/157 , H02M1/00 , H02M1/08
摘要： A voltage converter comprises a drive control circuit configured to generate switch control signals and a feedback circuit. The feedback circuit comprises a proportional control and a gain controller. The feedback circuit is configured to receive a sensed output voltage based on an output DC voltage, receive a voltage reference, obtain an input voltage value based on an input DC voltage, and generate an error signal based on a comparison of the sensed output voltage with the voltage reference. The feedback circuit is further configured to obtain a proportional gain value based on the voltage reference and the input voltage value and to generate a proportional value based on the proportional gain value and the error signal.

13. 发明申请

US20220393482A1 HALF-BRIDGE CIRCUIT USING GAN POWER DEVICES 有权
公开(公告)号：US20220393482A1
公开(公告)日：2022-12-08
申请号：US17820834
申请日：2022-08-18
申请人： Navitas Semiconductor Limited
发明人： Daniel M. Kinzer , Santosh Sharma , Ju Jason Zhang
IPC分类号： H02J7/00 , H01L23/495 , H01L27/02 , H01L23/62 , H02M1/088 , H02M3/158 , H03K3/012 , H01L29/20 , H03K17/10 , H03K19/0185 , H01L25/07 , H02M3/157 , H03K3/356 , H01L27/088 , H01L23/528 , H01L29/10 , H01L29/40 , H01L29/417
摘要： GaN-based half bridge power conversion circuits employ control, support and logic functions that are monolithically integrated on the same devices as the power transistors. In some embodiments a low side GaN device communicates through one or more level shift circuits with a high side GaN device. Various embodiments of level shift circuits and their inventive aspects are disclosed.

14. 发明申请

US20220393480A1 HALF-BRIDGE CIRCUIT USING MONOLITHIC FLIP-CHIP GAN POWER DEVICES 有权
公开(公告)号：US20220393480A1
公开(公告)日：2022-12-08
申请号：US17820538
申请日：2022-08-17
申请人： Navitas Semiconductor Limited
发明人： Daniel M. Kinzer , Santosh Sharma , Ju Jason Zhang
IPC分类号： H02J7/00 , H01L23/495 , H01L27/02 , H01L23/62 , H02M1/088 , H02M3/158 , H03K3/012 , H01L29/20 , H03K17/10 , H03K19/0185 , H01L25/07 , H02M3/157 , H03K3/356 , H01L27/088 , H01L23/528 , H01L29/10 , H01L29/40 , H01L29/417
摘要： GaN-based half bridge power conversion circuits employ control, support and logic functions that are monolithically integrated on the same devices as the power transistors. In some embodiments a low side GaN device communicates through one or more level shift circuits with a high side GaN device. Various embodiments of level shift circuits and their inventive aspects are disclosed.

15. 发明授权

US11522458B2 Bootstrap voltage refresh for buck-boost converter 有权
公开(公告)号：US11522458B2
公开(公告)日：2022-12-06
申请号：US17320011
申请日：2021-05-13
申请人： Cypress Semiconductor Corporation
发明人： Hemant Prakash Vispute , Partha Mondal , Pulkit Shah , Hariom Rai
IPC分类号： H02M3/158 , H02M1/08 , H02M3/157 , G06F13/42
摘要： An apparatus includes a first high-side driver of a buck-boost converter, the first high-side driver powered between a first bootstrap voltage (VBST1) and a first output voltage of a first high-side switch driven by the first high-side driver. A second high-side driver is powered between a second bootstrap voltage (VBST2) and a second output voltage of a second high-side switch driven by the second high-side driver. A comparator is to detect VBST1 drop below a threshold value with respect to the first output voltage when the buck-boost converter is in boost mode. A leakage control circuit is to boost, using VBST2 as a voltage source, VBST1 each cycle of boost mode in which an output of the comparator is enabled.

16. 发明申请

US20220368226A1 A PEAK CURRENT MODE CONTROLLER 有权
公开(公告)号：US20220368226A1
公开(公告)日：2022-11-17
申请号：US17766085
申请日：2020-09-30
申请人： Raytheon Systems Limited
发明人： Francis William Murphy
IPC分类号： H02M3/157 , H02M1/08 , H02M1/00
摘要： A peak current mode ‘PCM’ controller comprising control logic arranged to produce a series of digital control values derived from a voltage sense signal, control logic arranged to produce a digital slope compensation value, a first digital to analogue converter ‘DAC’ arranged to receive the series of digital control values and output a corresponding analogue control voltage, a second DAC arranged to receive the digital slope compensation value and output a corresponding analogue slope compensation voltage, an analogue differential integrator arranged to receive the analogue control voltage and the analogue slope compensation voltage, integrate the analogue slope compensation voltage, subtract the integrated slope compensation voltage from the analogue control voltage, and output the result of the subtraction as an analogue output voltage, a comparator arranged to compare the analogue output voltage to a voltage of an analogue current sense signal and produce an output signal when the analogue current sense signal voltage is equal to or exceeds the analogue output voltage, and control logic arranged to produce a drive signal in response to the output signal.

17. 发明授权

US11502607B2 Methods and apparatuses for auxiliary transient control system 有权
公开(公告)号：US11502607B2
公开(公告)日：2022-11-15
申请号：US16662798
申请日：2019-10-24
申请人： Alpha and Omega Semiconductor (Cayman) Limited
发明人： Amir Babazadeh , Demetri Giannopoulos , Chris Young
IPC分类号： H02M3/158 , H02M3/157
摘要： Apparatus and associated methods relate to providing an integrated circuit package having (a) a bypass circuit in parallel with an inductor and (b) a logic circuit configured to control the bypass circuit for conductivity modulation. In an illustrative example, in response to a corresponding load transient, the logic circuit may include a state machine configured to generate different control signals for the bypass circuit to control the timing and/or quantity of energy transfer from the inductor to a load. The bypass circuit may include a first semiconductor switch and a second semiconductor switch connected in anti-series. In some implementations, the power stage and the bypass circuit may be operated, for example, in numerous operational modes to dynamically modulate conductivity across the terminals of the inductor in a power supply to advantageously result in a smaller undershoot and overshoot.

18. 发明授权

US11482930B2 Systems and methods for providing intelligent constant on-time control 有权
公开(公告)号：US11482930B2
公开(公告)日：2022-10-25
申请号：US17185437
申请日：2021-02-25
申请人： Kinetic Technologies International Holdings LP
发明人： Xin Zhang , Jan Nilsson , William Robert Pelletier
IPC分类号： H02M3/157 , H02M3/158
摘要： A system that provides intelligent constant on-time control may include a first switch coupled to a power input; a second switch coupled to the first switch; a switching node between the first switch and the second switch, the switching node configured to be connected to an inductor and a power output; feedback paths coupled to (1) a synthesized node and (2) the power output, the feedback paths enabling feedback of signals from (1) the synthesized node, and (2) the power output; and a controller coupled to the feedback paths. The controller may be configured to control a voltage at the power output based on a combination of the signals carried by the feedback paths.

19. 发明授权

US11476761B2 Single-input multiple-output (SIMO) converter having a controller with switchable rest states 有权
公开(公告)号：US11476761B2
公开(公告)日：2022-10-18
申请号：US17014863
申请日：2020-09-08
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Gary Franklin Chard , Ariel Dario Moctezuma , Hasibur Rahman , Alex Kwasi Nyavor Titriku , Srinath Hosur
IPC分类号： H02M3/158 , H02M3/157 , H02M1/00
摘要： An inductor has first and second terminals. A first switch is coupled between the first terminal and a voltage supply terminal. A second switch is coupled between the first terminal and a negative output supply terminal. A third switch is coupled between the second terminal and a positive output supply terminal. A fourth switch is coupled between the second terminal and a ground terminal. A controller is coupled to the first, second, third and fourth switches. The controller is configured to provide: an inductor charge mode; a positive boost mode; a negative boost mode; a first rest state in which the controller closes the first switch and opens the second, third and fourth switches; and a second rest state in which the controller closes the fourth switch and opens the first, second and third switches.

20. 发明申请

US20220321009A1 VOLTAGE CONVERTER 有权
公开(公告)号：US20220321009A1
公开(公告)日：2022-10-06
申请号：US17680022
申请日：2022-02-24
申请人： STMicroelectronics (Rousset) SAS
发明人： Sebastien Ortet , Didier Davino , Remi Collette
IPC分类号： H02M3/158 , H02M1/08 , H03K5/24 , H02M3/157
摘要： In an embodiment, a voltage converter is configured to operate by a succession of operating cycles, each cycle comprising an energy accumulation phase and an energy restitution phase, wherein the converter is further configured to determine a duration of one of the phases by comparing a voltage ramp and a first reference voltage, and wherein a slope of the voltage ramp depends on a sign of a current in an inductor at an end of a previous operating cycle.

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