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公开(公告)号：US20230359235A1
公开(公告)日：2023-11-09
申请号：US18298758
申请日：2023-04-11
发明人： Ivan Floriani , Elena Brigo
CPC分类号： G05F1/575 , G05F1/595 , H02M1/0009 , H02M3/1582
摘要： A control device for a switching voltage regulator includes: a first detector of a first measurement signal indicative of a current flowing in a first side of the regulator, and providing a first comparison signal as a function of a first threshold; a second detector of a second measurement signal indicative of a current flowing in a second side of the regulator, and providing a second comparison signal as a function of a second threshold; a driving-signal generation circuit which generates a switching control signal from the first comparison signal to drive the switching circuit; a calibration circuit which receives an alert signal indicative of the first threshold, compares the alert signal and the second comparison signal, and provides a calibration signal in response; and a feedback circuit which provides a control signal as a function of an error signal and of the calibration signal.
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公开(公告)号：US20220312566A1
公开(公告)日：2022-09-29
申请号：US17654532
申请日：2022-03-11
申请人： STMicroelectronics (Grenoble 2) SAS , STMicroelectronics S. r. l. , STMicroelectronics Application GMBH
发明人： Manuel Gaertner , Philippe Sirito-Olivier , Giovanni Luca Torrisi , Thomas Urbitsch , Christophe Roussel , Fritz Burkhardt
IPC分类号： H05B45/46 , H05B45/325 , H05B45/50 , H05B45/14
摘要： A system includes lighting devices coupled to output supply pins, a microcontroller circuit, and a driver circuit, which receives data therefrom, and switches coupled in series to the lighting devices. The driver circuit includes output supply pins and selectively propagates a supply voltage to the output supply pins to provide respective pulse-width modulated supply signals at the output supply pins. The driver circuit computes duty-cycle values of the pulse-width modulated supply signals as a function of the data received from the microcontroller circuit. The lighting devices include at least one subset coupled to the same output supply pin. The microcontroller individually controls the switches via respective control signals to individually adjust a brightness of the lighting devices in the at least one subset of lighting devices.
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公开(公告)号：US20210333330A1
公开(公告)日：2021-10-28
申请号：US17368153
申请日：2021-07-06
摘要： A method of operating a control device includes performing an open load test or a current leakage test. The open load test includes activating a first current and then a second current and sensing with the first current and the second current activated, respectively, a first voltage drop and a second voltage drop between charge distribution pins and charge sensing pins of the control device. Respective differences are calculated between the first voltage drop and the second voltage drop sensed with the first current and the second current activated, respectively. These differences are compared with respective thresholds and an open circuit condition is declared as a result of the differences calculated reaching these thresholds.
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4.发明申请High resolution, high speed, low power switched capacitor analog to digital converter 有权高分辨率，高速度，低功耗开关电容模拟数字转换器公开(公告)号：US20030197636A1
公开(公告)日：2003-10-23
申请号：US10455894
申请日：2003-06-06
IPC分类号： H03M001/12
摘要： A switched capacitor digital to analog converter includes first and second converter segments having respective first and second arrays of binary weighted capacitors. Each capacitor of the first segment has a first electrode connected to a first common node and a second electrode connected through respective switches to one of first and second reference voltage terminals. Each capacitor of the second segment has a first electrode connected to a second common node and a second electrode connected through respective switches to one of the first and second reference voltage terminals. The converter includes a coupling capacitor connected between the first and second common nodes and capacitance means connected between the first common node and a reference voltage terminal. The coupling capacitor and capacitance means have capacitances, Cs and CATT respectively, that substantially satisfy the relationship: (2pnull1)nullCsnullCATTnull2pnullC, where p is the number of bits coded in the first converter segment and C is the unit capacitance.
摘要翻译： 开关电容器数模转换器包括具有相应的第二和第二二进制加权电容器阵列的第一和第二转换器段。 第一段的每个电容器具有连接到第一公共节点的第一电极和通过各个开关连接到第一和第二参考电压端子之一的第二电极。 第二段的每个电容器具有连接到第二公共节点的第一电极和通过各个开关连接到第一和第二参考电压端子之一的第二电极。 该转换器包括连接在第一和第二公共节点之间的耦合电容器和连接在第一公共节点和参考电压端子之间的电容装置。 耦合电容器和电容装置分别具有电容Cs和CATT，其基本上满足以下关系：（2
-1）.C-CATT = 2·C，其中p是在 第一转换器段，C为单位电容。
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