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公开(公告)号：US12068693B2
公开(公告)日：2024-08-20
申请号：US18309284
申请日：2023-04-28
申请人： Appulse Power Inc.
发明人： Aleksandar Radic
CPC分类号： H02M3/33515 , H02M1/0025 , H03M1/12
摘要： A power converter controller includes an analog to digital converter (ADC) to generate a digital representation of a feedback signal of a power converter, the feedback signal being received from a compensator of the power converter and being based on an output voltage of the power converter. A nonlinear gain block of the power converter controller receives the digital representation of the feedback signal and generates a transformed digital representation of the feedback signal using a nonlinear function. A switch control block of the power converter controller controls an on-time of a primary-side switch of the power converter based on the transformed digital representation of the feedback signal.
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公开(公告)号：US11316436B2
公开(公告)日：2022-04-26
申请号：US16944270
申请日：2020-07-31
申请人： Appulse Power Inc.
发明人： Aleksandar Radic
摘要： A power converter includes an input side to receive an input voltage, and an output side to provide an output voltage, a main switch, a controller, a transformer having a primary winding that couples the main switch to the input side, an active clamp switch coupled to the input side by an active clamp capacitor, and an active clamp controller circuit. The active clamp controller circuit includes a sampling circuit to generate a sampled main switch voltage, a delay circuit to generate a delayed sampled main switch voltage, a voltage comparison circuit, and an active clamp switch controller circuit configured to i) enable the active clamp switch based on a first comparison between the sampled main switch voltage and the delayed sampled main switch voltage, and ii) disable the active clamp switch based on a second comparison between the sampled main switch voltage and the delayed sampled main switch voltage.
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公开(公告)号：US20220038011A1
公开(公告)日：2022-02-03
申请号：US17451378
申请日：2021-10-19
申请人： Appulse Power Inc.
发明人： Arshan Naji , Aleksandar Radic
摘要： A dual path and mode start-up circuit includes a high-voltage start-up circuit, an auxiliary start-up circuit, a capacitor, and a sensing circuit. The high-voltage start-up circuit has high-voltage input and output voltage nodes and is configurable to be operated in a first or second mode of operation. The auxiliary start-up circuit has auxiliary input and output voltage nodes. The auxiliary output voltage node, the high-voltage output voltage node, and the capacitor are in signal communication. The sensing circuit is configured to sense a voltage level at the capacitor and to configure the high-voltage start-up circuit to operate in the first mode of operation if the voltage level at the capacitor is less than a first threshold voltage level, and configure the high-voltage start-up circuit to operate in the second mode of operation if the voltage level at the capacitor is greater than a second threshold voltage level.
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公开(公告)号：US10862387B2
公开(公告)日：2020-12-08
申请号：US16665188
申请日：2019-10-28
申请人： Appulse Power Inc.
发明人： Aleksandar Radic
摘要： A power converter controller includes a fractional valley controller configured to determine a target number of valleys of a resonant waveform at a drain node of a main switch, the target number of valleys corresponding to a desired off-time of the main switch, the fractional valley controller modulating an off-time of the main switch between two or more modulated off-times. The target number of valleys corresponds to a non-integer number of valleys of the resonant waveform at the drain node of the main switch. Each of the modulated off-times of the main switch corresponds to an integer number of valleys, and the two or more modulated off-times of the main switch has an average value that corresponds to the desired off-time.
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公开(公告)号：US10734909B2
公开(公告)日：2020-08-04
申请号：US16569924
申请日：2019-09-13
申请人： Appulse Power Inc.
发明人： Aleksandar Radic
摘要： A power converter includes an input side to receive an input voltage, and an output side to provide an output voltage, a main switch, a controller, a transformer having a primary winding that couples the main switch to the input side, an active clamp switch coupled to the input side by an active clamp capacitor, and an active clamp controller circuit. The active clamp controller circuit includes a sampling circuit to generate a sampled main switch voltage, a delay circuit to generate a delayed sampled main switch voltage, a voltage comparison circuit, and an active clamp switch controller circuit configured to i) enable the active clamp switch based on a first comparison between the sampled main switch voltage and the delayed sampled main switch voltage, and ii) disable the active clamp switch based on a second comparison between the sampled main switch voltage and the delayed sampled main switch voltage.
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公开(公告)号：US11106258B2
公开(公告)日：2021-08-31
申请号：US16751573
申请日：2020-01-24
申请人： Appulse Power Inc.
发明人： Mete Erturk , Karim Arabi , Seyed-Behzad Mahdavikhah-Mehrabad , Aleksandar Radic , Sheikh Mohammad Ahsanuzzaman
摘要： A power adapter for supplying electrical power to a device includes a processor, an interface for power transfer with the device, a multi-winding feedback converter to receive an AC power input and to convert the AC power input to a DC power output over the interface for the device, and a power conversion control circuit. A voltage level of the DC power output is set based on a reference voltage produced by the processor. The power conversion control circuit receives the reference voltage and a control signal based on the voltage level of the DC power output to generate switch control signals to control switches of the multi-winding feedback converter to control the voltage level of the DC power output. The processor recognizes a load associated with the device and sets, using the reference voltage, the DC power output based on the recognized load.
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公开(公告)号：US10903749B2
公开(公告)日：2021-01-26
申请号：US16536812
申请日：2019-08-09
申请人： Appulse Power Inc.
发明人： Sheikh Mohammad Ahsanuzzaman , Seyed-Behzad Mahdavikhah-Mehrabad , Aleksandar Radic , Aleksandar Prodic
摘要： The flyback converter generally has a capacitive divider operatively connectable to a voltage source for receiving an input voltage, the capacitive divider having a plurality of capacitive devices connected in series from one another; a transformer having a plurality of primary windings inductively coupled to at least one secondary winding, each one of the primary windings of the transformer being connected in parallel to a corresponding one of the capacitive devices of the capacitive divider via a switching device, each of the at least one secondary winding being connected to a forwardly biased and capacitive circuit connectable to an output load; and a controller connected to each one of the switching devices for operating the flyback converter to power the output load with the voltage source.
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公开(公告)号：US10897207B2
公开(公告)日：2021-01-19
申请号：US16399006
申请日：2019-04-30
申请人： Appulse Power Inc.
发明人： Aleksandar Radic
摘要： The anti-windup circuit generally has a voltage clamping device in series with a current limiting device operatively connectable to the output current path of a feedback compensator; the feedback compensator being part of a switch-mode power supply (SMPS) having an input voltage source and a load and generating constrained control values required to generate control on-off actions for tight power regulation. The inclusion of the disclosed anti-windup circuit in an SMPS may lead to hardware based overvoltage protection, reduced overall size and faster response to load changes.
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公开(公告)号：US10756640B1
公开(公告)日：2020-08-25
申请号：US16565057
申请日：2019-09-09
申请人： Appulse Power Inc.
摘要： A flyback converter includes a primary side circuit to receive an input voltage signal, a secondary side circuit to generate an output voltage signal using the input voltage signal, a synchronous rectifier switch, and a synchronous rectifier controller. The synchronous rectifier controller receives an attenuated drain-source voltage signal of the synchronous rectifier switch and the output voltage signal. The synchronous rectifier controller includes a threshold voltage generator to generate a first voltage signal using the output voltage signal, a first comparator to compare the attenuated drain-source voltage signal to the first voltage signal and, in response, generate a first comparison signal, and a second comparator to compare the attenuated drain-source voltage signal to a second voltage signal and, in response, generate a second comparison signal. The synchronous rectifier controller generates a control signal for switching the synchronous rectifier switch to an ON-state based on the first and second comparison signals.
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公开(公告)号：US20180316270A1
公开(公告)日：2018-11-01
申请号：US16020496
申请日：2018-06-27
申请人： Appulse Power Inc.
CPC分类号： H02M3/33507 , G01R15/18 , G01R19/00 , H02M2001/0022
摘要： A switch-mode power supply controller controls a circuit that includes a flyback-based, switch-mode power supply in the context of an input voltage source, a USB Type-C PD controller and an output load. The switch-mode power supply controller may be configured to estimate input voltage based on a measured magnetizing inductance discharge time. Furthermore, the switch-mode power supply controller may be configured to estimate output voltage based on the measured magnetizing inductance discharge time and the estimated input voltage. Still further, the estimated voltages may be used by the switch-mode power supply controller to limit certain currents and optimize power efficiency. Even further, the estimated and measured value may be employed by the switch-mode power supply controller to estimate and indicate brownout conditions.
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