ams OSRAM has been granted a patent for an oscillator circuit that includes a current controller, two capacitors, and a current generator. The circuit alternates charging currents to the capacitors based on a clock signal, enhancing dynamic element matching through a switching arrangement with multiple current sources. GlobalData’s report on ams OSRAM gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on ams OSRAM, Smart lighting was a key innovation area identified from patents. ams OSRAM's grant share as of June 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
Oscillator circuit with dynamic current charging and switching
The granted patent US12047078B2 describes an innovative oscillator circuit designed to enhance the efficiency and performance of electronic devices. The circuit comprises a current controller, two capacitors, and a current generator that operates under the control of a control signal. The current generator is responsible for providing charging currents to the capacitors, which are monitored by a comparator stage that compares the voltages across the capacitors with a reference voltage. This comparison generates a clock signal that is essential for the operation of the circuit. Additionally, a modulation circuit is included to alternate the charging currents, allowing for dynamic element matching, which optimizes the performance of the capacitors by ensuring that they are charged and discharged effectively.
The patent further details the structure of the comparator stage, which includes multiple comparators and logic components to facilitate the generation of the clock signal. The modulation circuit also features a clock divider and chopper circuits that enable the dynamic adjustment of connections based on the oscillation frequency of the divided clock signal. The current mirror within the circuit is designed to generate multiple charging currents, enhancing the circuit's adaptability. Furthermore, the current controller employs an operational amplifier to regulate the charging currents, ensuring that they remain consistent in value, except for noise. This oscillator circuit is applicable in various devices, including audio circuits and optical sensors, highlighting its versatility in modern electronic applications.
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