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71.发明授权公开(公告)号：US11323019B2
公开(公告)日：2022-05-03
申请号：US16954185
申请日：2018-12-17
发明人： Eamon O'Malley , Patrick Meehan , Karl Rinne
摘要： A switched mode power supply converter comprises a circuit pulse matching circuit configured to negate output voltage disturbance or noise during switching operation of a power conversion. The current pulse matching circuit input is driven by, or from, a power converter switch node of the switched mode power supply converter. The current pulse matching circuit comprises a rate-of-voltage change detection circuit driven by the power converter switch node.
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公开(公告)号：US20220131468A1
公开(公告)日：2022-04-28
申请号：US17389806
申请日：2021-07-30
发明人： Sungmin YOO , Taehwang KONG , Sangho KIM , Junhyeok YANG , Hyungmin LEE , Yunho LEE , Woojoong JUNG
摘要： A direct-current (DC)-DC converter includes a converting circuit including an inductor element. The converting circuit is configured to generate an output voltage from an input voltage based on a switching operation. An inductor current emulator is configured to adjust at least one parameter for changing a current peak value of the inductor element in response to a change in a level of the input voltage and is configured to generate an internal voltage based on the at least one parameter, which is adjusted. The inductor current emulator is configured to generate a control signal for controlling the switching operation such that current of the inductor element has a pattern corresponding to a pattern of the internal voltage.
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公开(公告)号：US11316428B2
公开(公告)日：2022-04-26
申请号：US17074650
申请日：2020-10-20
发明人： Chih-Lien Chang , Chun-Chieh Wang
摘要： A time signal generating circuit of a power converter and a control method thereof are provided. The time signal generating circuit includes a reference frequency generating circuit, an on-time circuit and a frequency tracking circuit. The reference frequency generating circuit provides a reference frequency signal. The on-time circuit provides an on-time signal according to a first reference signal and a second reference signal. The second reference signal is related to an output voltage of the power converter. The frequency tracking circuit is coupled to the reference frequency generating circuit and the on-time circuit, and compares frequencies of the reference frequency signal and the on-time signal within a default time to generate a tracking signal. The on-time circuit adjusts the second reference signal according to the tracking signal, so that the on-time circuit adjusts the frequency of the on-time signal.
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公开(公告)号：US20220077785A1
公开(公告)日：2022-03-10
申请号：US17455248
申请日：2021-11-17
摘要： An interleaved power converter includes a control circuit and multiple phase-shifted subconverters each having at least one power switch. The control circuit is coupled to the subconverters for controlling the power switches to balance currents in the subconverters over multiple periods. The control circuit includes a current compensator configured to determine a first duty cycle multiple times over the multiple periods, generate a PWM control signal having a present value of the first duty cycle for controlling the power switch of one of the subconverters during a period, determine a second duty cycle based on the present value of the first duty cycle and a previous value of the first duty cycle, and generate another PWM control signal having the second duty cycle for controlling the power switch of another one of the subconverters during the period. Other example power converters and control circuits are also disclosed.
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公开(公告)号：US11251703B2
公开(公告)日：2022-02-15
申请号：US16712706
申请日：2019-12-12
摘要： Methods, apparatus, systems and articles of manufacture are disclosed that facilitate multiple modes of converter operation. An example apparatus includes a comparator configured to provide a first trigger signal to initiate a first pulse width modulated signal in a constant-on-time mode for a power converter, an oscillator configured to provide a second trigger signal to initiate a second pulse width modulated signal in a fixed frequency mode for the power converter, and a selector configured to receive a select signal, the selector configured to output the first trigger signal to a pulse width modulated signal generator to initiate the first pulse width modulated signal based on a first state of the select signal, and output the second trigger signal to the pulse width modulated signal generator to initiate the second pulse width modulated signal based on a second state of the select signal.
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公开(公告)号：US20220037988A1
公开(公告)日：2022-02-03
申请号：US16945666
申请日：2020-07-31
发明人： Juha Olavi HAURU , Ari Kalevi VÄÄNÄNEN , Antti Juhani KORHONEN , Janne Matias Pahkala , Jussi Matti Aleksi SÄRKKÄ
摘要： In some examples, an apparatus comprises a switching regulator circuit, an output circuit, a duty cycle comparison circuit, a current comparison circuit, and a switching regulator control circuit. The switching regulator circuit switches between first and second voltages. The output circuit has a voltage input and a voltage output and generates a signal based on the first and second voltages. The duty cycle comparison circuit asserts a first signal responsive to a voltage at the voltage output exceeding a product of a multiplier and a reference signal. The current comparison circuit asserts a second signal responsive to a voltage at the voltage input exceeding a first reference voltage and to assert a third signal responsive to the voltage at the voltage input being below a second reference voltage. The switching regulator control circuit controls the switching regulator circuit based on the first, the second, and the third signals.
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公开(公告)号：US11228258B2
公开(公告)日：2022-01-18
申请号：US17043832
申请日：2018-11-20
发明人： Yousuke Hayashi
摘要： In the present uninterruptible power supply apparatus (U1), in a power failure of a commercial AC power supply (41), a switch (1) is turned off to electrically cut off the commercial AC power supply (41) from an AC input filter (2), and when DC voltage (ΔE=Ep−En) that is the difference between terminal-to-terminal voltages (Ep, En) of first and second capacitors (C1, C2) exceeds a threshold voltage (ETH), first and second IGBT devices (Q1, Q2) or third and fourth IGBT devices (Q3, Q4) included in the converter (3) are turned on and off to reduce DC voltage (ΔE).
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公开(公告)号：US11205961B2
公开(公告)日：2021-12-21
申请号：US16384041
申请日：2019-04-15
发明人： Keliu Shu
摘要： An electronic device has a DC/DC boost converter that includes a power NFET. The power NFET is coupled between a first pin, which can be coupled to a battery through an inductor, and a second pin that can be coupled to a ground plane. A switch-node is coupled to a third pin, which can be coupled to a diode to provide a boosted output voltage. A gate driver can receive a FET-on signal and drive a gate of the power NFET. A digital logic circuit provides the FET-on signal and includes an Ipeak gear-shifting circuit that dynamically changes the value of a peak inductor current responsive to one or more determinations that are related to one of the boosted output voltage and a switching frequency of the DC/DC boost converter.
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公开(公告)号：US11196345B1
公开(公告)日：2021-12-07
申请号：US16941153
申请日：2020-07-28
摘要： An interleaved power converter includes a control circuit and multiple phase-shifted subconverters each having at least one power switch. The control circuit is coupled to the subconverters for controlling the power switches to balance currents in the subconverters over multiple periods. The control circuit includes a current compensator configured to determine a first duty cycle multiple times over the multiple periods, generate a PWM control signal having a present value of the first duty cycle for controlling the power switch of one of the subconverters during a period, determine a second duty cycle based on the present value of the first duty cycle and a previous value of the first duty cycle, and generate another PWM control signal having the second duty cycle for controlling the power switch of another one of the subconverters during the period. Other example power converters and control circuits are also disclosed.
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公开(公告)号：US11177736B2
公开(公告)日：2021-11-16
申请号：US16686299
申请日：2019-11-18
发明人： Yasunari Furuya
摘要： A circuit device includes a digital circuit, a digital power supply circuit that supplies a digital power supply voltage to the digital circuit, an analog circuit, and an analog power supply circuit that supplies an analog power supply voltage to the analog circuit. The analog power supply circuit has a first mode and a second mode as operation modes, the first mode is a mode in which activation of power supply is faster than that in the second mode, and the second mode is a mode in which power supply is performed with lower noise than that in the first mode.
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