-
公开(公告)号：US11889594B2
公开(公告)日：2024-01-30
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： H05B45/14 , H05B45/46 , H05B45/50 , H05B45/325
CPC分类号： H05B45/46 , H05B45/14 , H05B45/325 , H05B45/50
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.
-
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.
-
公开(公告)号：US20210384852A1
公开(公告)日：2021-12-09
申请号：US17323602
申请日：2021-05-18
申请人： STMicroelectronics S.r.l. , STMicroelectronics Application GMBH , STMicroelectronics (Alps) SAS
IPC分类号： H02P7/03 , H02P7/29 , H03K3/037 , H03K17/687 , E05F15/60
摘要： An embodiment driver circuit comprises a power supply pin configured to receive a power supply voltage, and a set of control pins configured to provide a set of control signals for controlling switching of a set of switches of an h-bridge circuit comprising a pair of high-side switches and a pair of low-side switches. The driver circuit comprises control circuitry coupled to the control pins and configured to generate the control signals, and sensing circuitry coupled to the power supply pin and configured to generate a detection signal indicative of the power supply voltage exceeding a threshold value. The control circuitry is sensitive to the detection signal and is configured to generate the control signals to activate one of the pair of high-side switches and the pair of low-side switches and de-activate the other of the pair of high-side switches and the pair of low-side switches.
-
公开(公告)号：US11973457B2
公开(公告)日：2024-04-30
申请号：US17323602
申请日：2021-05-18
申请人： STMicroelectronics S.r.l. , STMicroelectronics Application GMBH , STMicroelectronics (Alps) SAS
IPC分类号： H02P3/18 , E05F15/60 , H02P6/16 , H02P7/03 , H02P7/29 , H03K3/037 , H03K17/687 , B60J5/10 , B60R16/033
CPC分类号： H02P7/04 , E05F15/60 , H02P7/29 , H03K3/0377 , H03K17/6871 , B60J5/10 , B60R16/033 , E05Y2201/434 , E05Y2900/548 , H03K2217/0063 , H03K2217/0072 , H03K2217/0081
摘要： An embodiment driver circuit comprises a power supply pin configured to receive a power supply voltage, and a set of control pins configured to provide a set of control signals for controlling switching of a set of switches of an h-bridge circuit comprising a pair of high-side switches and a pair of low-side switches. The driver circuit comprises control circuitry coupled to the control pins and configured to generate the control signals, and sensing circuitry coupled to the power supply pin and configured to generate a detection signal indicative of the power supply voltage exceeding a threshold value. The control circuitry is sensitive to the detection signal and is configured to generate the control signals to activate one of the pair of high-side switches and the pair of low-side switches and de-activate the other of the pair of high-side switches and the pair of low-side switches.
-
公开(公告)号：US10924100B2
公开(公告)日：2021-02-16
申请号：US16849020
申请日：2020-04-15
摘要： An H-bridge circuit includes a supply voltage node, a first pair of transistors and a second pair of transistors. First transistors in each pair have the current paths therethrough included in current flow lines between the supply node and, respectively, a first output node and a second output node. Second transistors in each pair have the current paths therethrough coupled to a third output node and a fourth output node, respectively. The first and third output nodes are mutually isolated from each other and the second and fourth output nodes are mutually isolated from each other. The H-bridge circuit is operable in a selected one of a first, second and third mode.
-
公开(公告)号：US11342908B2
公开(公告)日：2022-05-24
申请号：US17145863
申请日：2021-01-11
摘要： An H-bridge circuit includes a supply voltage node, a first pair of transistors and a second pair of transistors. First transistors in each pair have the current paths therethrough included in current flow lines between the supply node and, respectively, a first output node and a second output node. Second transistors in each pair have the current paths therethrough coupled to a third output node and a fourth output node, respectively. The first and third output nodes are mutually isolated from each other and the second and fourth output nodes are mutually isolated from each other. The H-bridge circuit is operable in a selected one of a first, second and third mode.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.017 秒)
