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1. 发明申请

US20180294723A1 Reverse Recovery Charge Elimination in DC/DC Power Converters 审中-公开
公开(公告)号：US20180294723A1
公开(公告)日：2018-10-11
申请号：US15915205
申请日：2018-03-08
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Alexandre Morello
IPC分类号： H02M3/156
CPC分类号： H02M3/1563 , H02M3/158 , H02M3/1588 , H02M2001/0032 , H02M2001/0051
摘要： A switching mode power converter circuit is disclosed, comprising a first high-side switch and a first low-side switch coupled in series between an input voltage level and a reference voltage level, a second high-side switch and a second low-side switch coupled in series between the input voltage level and the reference voltage level, and a control circuit for controlling switching operation of the first and second high-side switches and the first and second low-side switches. The first high-side switch has a larger on-state resistance than the second high-side switch and the first low-side switch has a larger on-state resistance than the second low-side switch. The control circuit is configured to, during an on-state of the first and second low-side switches, control the second low-side switch to switch to the off-state and control the first high-side switch to switch to the on-state, so that the first high-side switch and the first low-side switch are both in the on-state. The application further relates to a method of operating such switching mode power converter circuit.

2. 发明授权

US10601323B2 Peak current detection for compensating errors in a power converter 有权
公开(公告)号：US10601323B2
公开(公告)日：2020-03-24
申请号：US15843354
申请日：2017-12-15
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Alexandre Morello
IPC分类号： H02M3/158 , H02M1/08 , H03K5/1532 , H02M1/00
摘要： A power converter which converts electrical power at an input voltage into electrical power at an output voltage is presented. It has a power stage with a high side switching element, a low side switching element and an inductor. The power converter has a voltage-to-current converter coupled to the power stage to convert a voltage indicative of a current flowing into the inductor into an indicator current. A peak current detector receives the indicator current to determine a pedestal component of the indicator current in a first time interval during which the high side switching element is open, and to generate a calibrated indicator current by subtracting the pedestal component from the indicator current. The peak current detector compares the calibrated indicator current with a threshold value for detecting a more precise peak current flowing into the inductor, taking into account the effects of temperature or circuit aging.

3. 发明申请

US20190190387A1 Peak Current Detection in a Power Converter 审中-公开
公开(公告)号：US20190190387A1
公开(公告)日：2019-06-20
申请号：US15843354
申请日：2017-12-15
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Alexandre Morello
IPC分类号： H02M3/158 , H03K5/1532 , H02M1/08
摘要： A power converter which converts electrical power at an input voltage into electrical power at an output voltage is presented. It has a power stage with a high side switching element, a low side switching element and an inductor. The power converter has a voltage-to-current converter coupled to the power stage to convert a a-voltage indicative of a a-current flowing into the inductor into an indicator current. A peak current detector receives the indicator current at an input node, to determine a pedestal component of the indicator current in a first time interval during which the high side switching element is open, and to generate a calibrated indicator current by subtracting the pedestal component from the indicator current. The peak current detector compares the calibrated indicator current with a threshold value for detecting a more precise peak current flowing into the inductor, taking into account the effects of temperature or circuit aging.

4. 发明授权

US10044259B2 Low power DC-DC converter 有权
公开(公告)号：US10044259B2
公开(公告)日：2018-08-07
申请号：US15357033
申请日：2016-11-21
申请人： Dialog Semiconductor (UK) Limited
发明人： Stefano D'Amico , Francesco Dalena , Mirko Pasca
IPC分类号： H02M3/07 , H03B5/12
摘要： A DC-DC converter comprises an oscillator and a charge pump, to ensure operation at low voltage. The oscillator comprises one or more source degenerated transistors comprising a degeneration impedance located between a source of the transistor and a ground connection. The degeneration impedance comprises an inductor and a capacitor. Also provided is an energy harvesting device comprising such a DC-DC converter.

5. 发明授权

US10177659B2 Nulling reverse recovery charge in DC/DC power converters 有权
公开(公告)号：US10177659B2
公开(公告)日：2019-01-08
申请号：US15356894
申请日：2016-11-21
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Nicolo Nizza , Danilo Gerna , Enrico Pardi , Stefano Scaldaferri , Alexandre Morello , Tommaso Baldetti
IPC分类号： H02M3/158 , H02M3/156 , H02M7/48 , H02M1/38 , H02M1/00
摘要： A switching mode power converter circuit and a method are presented. The circuit comprises a first transistor switch and a second transistor switch coupled in series between an input voltage level and ground. There is a control circuit for controlling switching operation of the first transistor switch and the second transistor switch. There is a detection circuit for sensing a voltage at an intermediate node arranged between the first transistor switch and the second transistor switch, for deriving an indication of a slope of the sensed voltage, and for generating a switching control signal for the control circuit on the basis of the derived indication of the slope of the sensed voltage. The control circuit sets a first timing for activating the first transistor switch and/or a second timing for activating the second transistor switch on the basis of the switching control signal.

6. 发明申请

US20180026538A1 Nulling Reverse Recovery Charge in DC/DC Power Converters 审中-公开
公开(公告)号：US20180026538A1
公开(公告)日：2018-01-25
申请号：US15356894
申请日：2016-11-21
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Nicolo Nizza , Danilo Gerna , Enrico Pardi , Stefano Scaldaferri , Alexandre Morello , Tommaso Baldetti
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M1/38 , H02M3/156 , H02M3/1584 , H02M3/1588 , H02M7/48 , H02M2001/0051 , Y02B70/1466 , Y02B70/1491
摘要： A switching mode power converter circuit and a method are presented. The circuit comprises a first transistor switch and a second transistor switch coupled in series between an input voltage level and ground. There is a control circuit for controlling switching operation of the first transistor switch and the second transistor switch. There is a detection circuit for sensing a voltage at an intermediate node arranged between the first transistor switch and the second transistor switch, for deriving an indication of a slope of the sensed voltage, and for generating a switching control signal for the control circuit on the basis of the derived indication of the slope of the sensed voltage. The control circuit sets a first timing for activating the first transistor switch and/or a second timing for activating the second transistor switch on the basis of the switching control signal.

7. 发明授权

US10804802B2 Direct charging with mutual active clamp 有权
公开(公告)号：US10804802B2
公开(公告)日：2020-10-13
申请号：US16163928
申请日：2018-10-18
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena
IPC分类号： H02M3/158 , H02M3/156 , H02J7/00
摘要： A power converter comprises a high side switching element and a low side switching element arranged in series between an input terminal of the power converter and a reference terminal. A first feedback circuit of the power converter is configured to control an output voltage or an output current at an output terminal of the power converter. The first feedback circuit comprises a first comparator configured to generate a first control signal for controlling the switching of the switching elements by comparing a first error voltage with a first ramp signal. A second feedback circuit of the power converter is also configured to control said output voltage or said output current. The second feedback circuit comprises a second comparator configured to generate a second control signal by comparing a second error voltage with a second ramp signal. A selective clamping unit is configured to determine if the first error voltage is larger than the second error voltage, and to reduce the first error voltage if it is determined that the first error voltage is larger than the second error voltage.

8. 发明授权

US10523118B2 Reverse recovery charge elimination in DC/DC power converters 有权
公开(公告)号：US10523118B2
公开(公告)日：2019-12-31
申请号：US15915205
申请日：2018-03-08
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena , Alexandre Morello
IPC分类号： H02M3/156 , H02M3/158 , H02M1/00
摘要： A switching mode power converter circuit is disclosed, comprising a first high-side switch and a first low-side switch coupled in series between an input voltage level and a reference voltage level, a second high-side switch and a second low-side switch coupled in series between the input voltage level and the reference voltage level, and a control circuit for controlling switching operation of the first and second high-side switches and the first and second low-side switches. The first high-side switch has a larger on-state resistance than the second high-side switch and the first low-side switch has a larger on-state resistance than the second low-side switch. The control circuit is configured to, during an on-state of the first and second low-side switches, control the second low-side switch to switch to the off-state and control the first high-side switch to switch to the on-state, so that the first high-side switch and the first low-side switch are both in the on-state. The application further relates to a method of operating such switching mode power converter circuit.

9. 发明授权

US11387666B2 Dual stage battery charger 有权
公开(公告)号：US11387666B2
公开(公告)日：2022-07-12
申请号：US16372752
申请日：2019-04-02
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena
IPC分类号： H02J7/00 , H02M3/158 , H02M1/00
摘要： A dual stage power converter and a method for charging an energy storage device are presented. The dual stage power converter has a first stage and a second stage arranged in series. A first stage has a voltage divider circuit with a flying capacitor to convert an input voltage at an input of the dual stage power converter into a smaller, intermediate voltage at an intermediate node of the dual stage power converter. A second stage has a voltage regulator circuit to receive said intermediate voltage for regulating, using a feedback loop, an output voltage at an output of the dual stage power converter. The described dual stage power converter enables a reduction of the switching power losses in the voltage regulator circuit and a reduction of the resistive power losses within an external cable connecting the dual stage power converter with an external wall adapter.

10. 发明申请

US20190123649A1 Direct Charging with Mutual Active Clamp 审中-公开
公开(公告)号：US20190123649A1
公开(公告)日：2019-04-25
申请号：US16163928
申请日：2018-10-18
申请人： Dialog Semiconductor (UK) Limited
发明人： Francesco Dalena
IPC分类号： H02M3/158 , H02J7/00
摘要： A power converter comprises a high side switching element and a low side switching element arranged in series between an input terminal of the power converter and a reference terminal. A first feedback circuit of the power converter is configured to control an output voltage or an output current at an output terminal of the power converter. The first feedback circuit comprises a first comparator configured to generate a first control signal for controlling the switching of the switching elements by comparing a first error voltage with a first ramp signal. A second feedback circuit of the power converter is also configured to control said output voltage or said output current. The second feedback circuit comprises a second comparator configured to generate a second control signal by comparing a second error voltage with a second ramp signal. A selective clamping unit is configured to determine if the first error voltage is larger than the second error voltage, and to reduce the first error voltage if it is determined that the first error voltage is larger than the second error voltage.

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