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公开(公告)号：US11245369B2
公开(公告)日：2022-02-08
申请号：US16935649
申请日：2020-07-22
IPC分类号： H03F3/217 , H03K17/687 , H03K3/017 , H04R3/00 , G05F1/575 , H03F1/02 , H02M3/158 , H02M3/00 , H03F3/187 , H02M1/00
摘要： An integrated circuit includes a die that includes a circuit configured to generate a PWM signal in response to a first clock signal, and a first set of pads configured to provide amplified PWM signals to external filters. An amplifier stage is configured to provide the amplified PWM signals. The die includes two pads configured to be coupled to an external inductor, and a second set of pads configured to provide regulated voltages. An electronic converter circuit is configured to generate the regulated voltages to supply the amplifier stage. The electronic converter circuit includes a control circuit configured to drive electronic switches in response to a second clock signal to regulate the regulated voltages to a respective target value. The die includes a control block to synchronize the switching activity of the electronic switches with the switching activity of the amplifier stage.
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公开(公告)号：US20200350877A1
公开(公告)日：2020-11-05
申请号：US16935649
申请日：2020-07-22
IPC分类号： H03F3/217 , H03K17/687 , H03K3/017 , H04R3/00 , G05F1/575 , H03F1/02 , H02M3/158 , H02M3/00 , H03F3/187
摘要： An integrated circuit includes a die that includes a circuit configured to generate a PWM signal in response to a first clock signal, and a first set of pads configured to provide amplified PWM signals to external filters. An amplifier stage is configured to provide the amplified PWM signals. The die includes two pads configured to be coupled to an external inductor, and a second set of pads configured to provide regulated voltages. An electronic converter circuit is configured to generate the regulated voltages to supply the amplifier stage. The electronic converter circuit includes a control circuit configured to drive electronic switches in response to a second clock signal to regulate the regulated voltages to a respective target value. The die includes a control block to synchronize the switching activity of the electronic switches with the switching activity of the amplifier stage.
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公开(公告)号：US10531211B2
公开(公告)日：2020-01-07
申请号：US16135624
申请日：2018-09-19
发明人： Edoardo Botti , Marco Raimondi
摘要： A diagnostic circuit is used for detecting the load status of an audio amplifier. The audio amplifier includes two output terminals for connection to a speaker. The diagnostic circuit may include a first circuit, which configured to generate a first signal indicating whether a signal provided via the two output terminals comprises an audio signal. A second circuit can be configured to detect a first measurement signal being indicative for the output current provided via the two output terminals, and to compare the first measurement signal with at least one threshold in order to generate a second signal indicating whether the output current has a low current amplitude profile or a high current amplitude profile. A third circuit can be configured to generate a diagnostic signal as a function of the first and the second signal.
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公开(公告)号：US20190238130A1
公开(公告)日：2019-08-01
申请号：US16261267
申请日：2019-01-29
发明人： Edoardo Botti , Giovanni Gonano
IPC分类号： H03K17/687 , H03F3/217
摘要： A bi-directional switch circuit includes first and second transistors having their control electrodes coupled at a first common node and the current paths coupled at a second common node in an anti-series arrangement. First and second electrical paths coupled between the first common node and the first and second transistors, respectively, include first and second switches switchable between a conductive state and a non-conductive state. A third electrical path between the first and second common nodes includes a third switch switchable between a conductive state and a non-conductive state. The third switch is coupled with the first and second switches by a logical network configured to switch the third switch to the conductive state with the first and second switches switched to the non-conductive state, and to the non-conductive state with either one of the first and second switches switched to the conductive state.
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公开(公告)号：US20190238094A1
公开(公告)日：2019-08-01
申请号：US16261236
申请日：2019-01-29
发明人： Edoardo Botti , Giovanni Gonano
摘要： A switching circuit includes a switching circuit stage configured to supply a load via filter networks. Control circuitry is provided to control alternate switching sequences of transistors in the half-bridges of the switching circuit stage. A current flow line is provided between the output nodes of the half-bridges including an inductance between two switches. First and second capacitances are coupled with the output nodes of the half-bridges. The control circuitry switches first and second switches to the conductive state at intervals in the alternate switching sequences of the transistors in the half-bridges between switching the first pair of transistors to a non-conductive state and switching the second pair of transistors to a conductive state.
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公开(公告)号：US20170155381A1
公开(公告)日：2017-06-01
申请号：US15431374
申请日：2017-02-13
发明人： Marco Raimondi , Edoardo Botti
IPC分类号： H03K5/1252 , H03K4/08 , H03K7/08
摘要： A method is for reducing pulse skipping from a characteristic affecting a modulating signal input to an integrator of a pulse width modulation (PWM) modulator, together with a square wave carrier signal for generating a triangular waveform of the PWM modulator. The method may include creating a broad synchronous peak at vertexes of the triangular waveform output by the integrator.
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公开(公告)号：US09595946B2
公开(公告)日：2017-03-14
申请号：US14592364
申请日：2015-01-08
发明人： Marco Raimondi , Edoardo Botti
摘要： A method is for reducing pulse skipping from a characteristic affecting a modulating signal input to an integrator of a pulse width modulation (PWM) modulator, together with a square wave carrier signal for generating a triangular waveform of the PWM modulator. The method may include creating a broad synchronous peak at vertexes of the triangular waveform output by the integrator.
摘要翻译： 一种方法是从影响调制信号输入到脉冲宽度调制（PWM）调制器的积分器的特性以及用于产生PWM调制器的三角形波形的方波载波信号的特性减少脉冲跳跃。 该方法可以包括在由积分器输出的三角波形的顶点处创建宽同步峰。
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8.发明授权Method of reducing power dissipation in a switching amplifier and circuit implementing such method 有权降低开关放大器功耗的方法和实现这种方法的电路公开(公告)号：US09577582B2
公开(公告)日：2017-02-21
申请号：US14512704
申请日：2014-10-13
发明人： Edoardo Botti
CPC分类号： H03F1/0233 , H03F1/0205 , H03F3/2171 , H03F3/2173 , H03F2200/03 , H03F2200/171 , H03F2200/267 , H03F2200/351 , H03F2200/471
摘要： A method is for reducing power dissipation in a switching amplifier. The method may include comparing a load current with a ripple current and, if the load current is greater than the ripple current, then detecting a first potential value at a first output terminal of the switching amplifier, detecting a second potential value at a second output terminal of the switching amplifier, detecting a third potential value between first and the second terminals of a first capacitor, and coupling the first terminal of the first capacitor to one of the first output terminal and the second output terminal. The second terminal of the first capacitor may be coupled to a reference voltage, the first output terminal, or the second output terminal based upon whether the first potential value or the second potential value is equal to the third potential value.
摘要翻译： 一种用于降低开关放大器功耗的方法。 该方法可以包括将负载电流与纹波电流进行比较，并且如果负载电流大于纹波电流，则检测开关放大器的第一输出端处的第一电位值，在第二输出端检测第二电位值 端子，检测第一电容器的第一和第二端子之间的第三电位值，并将第一电容器的第一端子耦合到第一输出端子和第二输出端子之一。 基于第一电位值或第二电位值是否等于第三电位值，第一电容器的第二端子可以耦合到参考电压，第一输出端子或第二输出端子。
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公开(公告)号：US11489444B2
公开(公告)日：2022-11-01
申请号：US17202592
申请日：2021-03-16
发明人： Edoardo Botti
摘要： An embodiment switching converter comprises an input stage; an output stage for providing an output voltage; a capacitive coupling stage for coupling the input stage to the output stage; a first switching stage configured to switch between a first state where an input voltage is provided to the input stage, and a second state where the input voltage is not provided to the input stage; a second switching stage configured to switch between a first state in which a reference voltage is provided to the output stage, and a second state in which the reference voltage is not provided to the output stage; and a voltage regulation stage configured to set, after the second switching stage switches from the first state to the second state and before the first switching stage switches from the second state to the first state, a target voltage across the input stage.
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公开(公告)号：US11463052B2
公开(公告)日：2022-10-04
申请号：US17107269
申请日：2020-11-30
发明人： Hong Wu Lin , Giovanni Gonano , Edoardo Botti
IPC分类号： H03F3/217 , H03K17/687 , H03K19/20 , H04R3/00
摘要： In an embodiment, a method for shaping a PWM signal includes: receiving an input PWM signal; generating an output PWM signal based on the input PWM signal by: when the input PWM signal transitions with a first edge of the input PWM signal, transitioning the output PWM signal with a first edge of the output PWM signal; and when the input PWM signal transitions with a second edge before the first edge of the output PWM signal transitions, delaying a second edge of the output PWM signal based on the first edge of the output PWM signal.
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