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公开(公告)号：US20200301457A1
公开(公告)日：2020-09-24
申请号：US16703517
申请日：2019-12-04
发明人： Santo ILARDO
摘要： A driver circuit includes a temperature sensor configured to generate a first voltage representative of current operating temperature of the driver circuit. The driver circuit also includes an amplifier configured to compare the first voltage to a second voltage representative of an upper threshold operating temperature, and to generate a control signal based upon the comparison. A variable current source is configured to generate a load current as a function of the control signal. The amplifier generates the control signal so as to cause the variable current source to generate the load current as having a magnitude equal to an upper threshold, when the first voltage is less than the second voltage.
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公开(公告)号：US10591937B2
公开(公告)日：2020-03-17
申请号：US16137870
申请日：2018-09-21
发明人： Fabien Dubois , Tine Konjedic
IPC分类号： G05F1/567 , H02P29/024 , G01R31/34 , H02P27/05 , H02P29/032 , H02K11/27 , H02P27/06 , G01R31/12 , G01R19/165 , H02P23/00 , G01R31/42
摘要： A motor system is disclosed comprising: an electrical conductor in the form of a coil or winding; an electrical insulator insulating the electrical conductor; a discharge sensor arranged and configured to measure a parameter indicative of an electrical current in the insulator; and a voltage controller for controlling a voltage signal applied to the electrical conductor based on a value of the parameter measured by the discharge sensor.
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公开(公告)号：US10437276B2
公开(公告)日：2019-10-08
申请号：US15866672
申请日：2018-01-10
发明人： Ju Hyun Lee , Kyu Ho Kim , Chun Sik Jung , Sung Gon Kim
摘要： A regulator control circuit includes a regulator configured to provide an output voltage by regulation using one of an input voltage and a dropped input voltage, to a load; and a heat dissipation circuit configured to sense a change in the input voltage, and provide the dropped input voltage to the regulator when the input voltage is sensed to be equal to or higher than a preset level.
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公开(公告)号：US20190265739A1
公开(公告)日：2019-08-29
申请号：US16249558
申请日：2019-01-16
申请人： ABLIC Inc.
发明人： Tadakatsu Kuroda , Tsutomu Tomioka
摘要： A voltage regulator includes a first switch connected between a first input terminal of an error amplifier circuit and an input terminal of the voltage regulator, a second switch connected between a second input terminal of the error amplifier circuit and an output terminal of the voltage regulator, a third switch connected between the first input terminal and the second input terminal, and a short fault detection circuit which detects a short fault of the output terminal, based on an output voltage of the voltage regulator.
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公开(公告)号：US10353415B2
公开(公告)日：2019-07-16
申请号：US15938316
申请日：2018-03-28
申请人： ABLIC Inc.
发明人： Kaoru Sakaguchi , Kazuhiro Tsumura
摘要： To provide a voltage regulator capable of switching a voltage of an output terminal from an internal voltage to an external voltage while suppressing an increase in circuit scale. The voltage regulator includes a voltage output circuit configured to generate a constant internal voltage lower than an external voltage applied to an input terminal from the external voltage and supplying the constant internal voltage to an output terminal, a temperature sensing circuit configured to decrease an output voltage of an output node thereof according to a rise in temperature, an overheat detection circuit connected to the output node of the temperature sensing circuit and a test terminal, and a voltage detection circuit connected to the output node of the temperature sensing circuit and the test terminal.
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公开(公告)号：US10180694B2
公开(公告)日：2019-01-15
申请号：US15655373
申请日：2017-07-20
摘要： A voltage regulator (e.g., a low drop-out regulator) includes a pass transistor coupled to an input voltage node and an output voltage node. The voltage regulator also includes a drive transistor coupled to a control input of the pass transistor and a first resistor coupled between a source and a back gate of the drive transistor. The voltage regulator also includes a complementary to absolute temperature (CTAT) current generator circuit coupled to the resistor and configured to generate a CTAT current to bias the first resistor.
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公开(公告)号：US20180321718A1
公开(公告)日：2018-11-08
申请号：US15586891
申请日：2017-05-04
摘要： A technique for thermal management of a circuit includes generating a power consumption estimate for the circuit based on a predetermined update amount and a comparison of a sensed voltage level to a predetermined voltage level. The method includes generating a fault signal based on the power consumption estimate and a predetermined power consumption limit. Generating the power consumption estimate may include sensing a voltage drop across a first terminal of a device of the circuit and a second terminal of the device to generate the sensed voltage level. The sensed voltage level may be indicative of the voltage drop. The method may include updating the power consumption estimate by the predetermined update amount in response to a clock signal. The power consumption estimate may be used as a proxy for a measurement of a thermal state of the circuit.
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公开(公告)号：US20180284824A1
公开(公告)日：2018-10-04
申请号：US15655373
申请日：2017-07-20
摘要： A voltage regulator (e.g., a low drop-out regulator) includes a pass transistor coupled to an input voltage node and an output voltage node. The voltage regulator also includes a drive transistor coupled to a control input of the pass transistor and a first resistor coupled between a source and a back gate of the drive transistor. The voltage regulator also includes a complementary to absolute temperature (CTAT) current generator circuit coupled to the resistor and configured to generate a CTAT current to bias the first resistor.
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公开(公告)号：US10088856B2
公开(公告)日：2018-10-02
申请号：US15588089
申请日：2017-05-05
发明人： Alvin Xu , Qingjie Ma , Yang Wang , Yan He , Jun Ma , Zhenghao Cui , Jingwei Xu
摘要： Methods, apparatus, systems and articles of manufacture for negative output voltage active clamping using a floating bandgap reference and temperature compensation are disclosed. An example load switch includes a floating bandgap reference circuit to generate a bandgap reference voltage. A resistor divider is to generate a resistor divider voltage. A temperature compensator to apply a temperature compensation current to the resistor divider to create a temperature compensated resistor divider voltage. A power transistor is to be enabled when the temperature compensated resistor divider voltage is less than the bandgap reference voltage. The example load switch can work under negative output voltage clamping and get better accuracy drain to source clamped voltage of power transistor for inductive load condition.
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80.发明申请公开(公告)号：US20170212541A1
公开(公告)日：2017-07-27
申请号：US15328300
申请日：2015-07-23
发明人： Joseph Sylvester CHANG , Wei SHU , Jize JIANG
IPC分类号： G05F1/567
摘要： A method for providing a voltage reference at a present operating temperature in a circuit is provided. The circuit comprises a first MOS transistor having a first threshold voltage; and a second MOS transistor having a second threshold voltage different from the first threshold voltage is provided. Temperature insensitivity is obtained by compensating the difference between the first threshold voltage and the second threshold voltage with a parameter representative of the present operating temperature
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