摘要:
An integrated circuit arrangement is disclosed which comprises a semiconductor body having a substrate and at least one substrate terminal, at least one semiconductor component integrated in the semiconductor body and being connected between a first supply terminal providing a first supply potential and a second supply terminal providing a second supply potential, and switching means adapted for connecting at least one of said substrate terminals to either the first or to the second supply terminal dependent on which supply terminal provides the lower supply potential.
摘要:
An integrated circuit arrangement includes a semiconductor body having a substrate and at least one substrate terminal. At least one semiconductor component is integrated in the semiconductor body and is connected between a first supply terminal and a second supply terminal. The first supply potential is higher than the second supply potential during normal operation of the semiconductor component and the first supply potential is lower than the second supply potential during reverse voltage operation of the semiconductor component. A switch is adapted to couple at least one of the substrate terminals to the first supply terminal during reverse voltage operation and to the second supply terminal during normal operation.
摘要:
A circuit arrangement includes a first semiconductor switch and at least one second semiconductor switch, each of them having a control terminal and a first and second load terminal, and with an overvoltage protection arrangement for the at least two semiconductor switches. The overvoltage protection arrangement comprises a voltage limiting unit with a first and a second terminal, whose first terminal is connected to a central circuit node, whose second terminal is connected to a terminal for a reference potential, and which is configured so that it conducts current when a threshold voltage is applied between the first and second load terminals. The central circuit node is coupled to the first load terminals of the semiconductor switches. The overvoltage protection arrangement further comprises a first actuating circuit for the first semiconductor switch and a second actuating circuit for the at least one second semiconductor switch.
摘要:
A circuit arrangement includes plural semiconductor switches, at least one overvoltage protection arrangement and a coupling circuit. Each of a first semiconductor switch and a second semiconductor switch has a control terminal and first and second load terminals. The at least one overvoltage protection arrangement provides overvoltage protection to the semiconductor switches. The coupling circuit is operable to selectively couple the control terminals of at least two of the at least two semiconductor switches.
摘要:
In one embodiment, a light dimming module is disclosed. The light dimming module has a dimming engine coupled to a digital input interface and an output interface. The dimming engine is configured to provide a N-segment piecewise linear exponential digital control signal, and the output interface is configured to control the intensity of a light source.
摘要:
In one embodiment, a light dimming module is disclosed. The light dimming module has a dimming engine coupled to a digital input interface and an output interface. The dimming engine is configured to provide a N-segment piecewise linear exponential digital control signal, and the output interface is configured to control the intensity of a light source.
摘要:
A circuit arrangement includes a first semiconductor switch and at least one second semiconductor switch, each of them having a control terminal and a first and second load terminal, and with an overvoltage protection arrangement for the at least two semiconductor switches. The overvoltage protection arrangement comprises a voltage limiting unit with a first and a second terminal, whose first terminal is connected to a central circuit node, whose second terminal is connected to a terminal for a reference potential, and which is configured so that it conducts current when a threshold voltage is applied between the first and second load terminals. The central circuit node is coupled to the first load terminals of the semiconductor switches. The overvoltage protection arrangement further comprises a first actuating circuit for the first semiconductor switch and a second actuating circuit for the at least one second semiconductor switch.
摘要:
A driver circuit includes a buck converter associated with each LED chain for supplying a load current thereto. The buck converter receives an input voltage and is configured to provide a supply voltage to the associated LED chain such that the resulting load current of the LED chain matches at least approximately a predefined reference current value. The driver circuit further includes a switching converter that receives a driver supply voltage from a power supply and provides, as an output voltage, the input voltage for the buck converters. The switching converter is configured to provide an input voltage to the buck converters such that the maximum of the ratios between the input voltage and the supply voltages provided to the LED chains matches a predefined tolerance reference ratio.
摘要:
A driver circuit includes a buck converter associated with each LED chain for supplying a load current thereto. The buck converter receives an input voltage and is configured to provide a supply voltage to the associated LED chain such that the resulting load current of the LED chain matches at least approximately a predefined reference current value. The driver circuit further includes a switching converter that receives a driver supply voltage from a power supply and provides, as an output voltage, the input voltage for the buck converters. The switching converter is configured to provide an input voltage to the buck converters such that the maximum of the ratios between the input voltage and the supply voltages provided to the LED chains matches a predefined tolerance reference ratio.