{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9853542","patent":{"patent_number":"US-9853542","title":"Constant-voltage and constant-current buck converter and control circuit","assignee":null,"inventors":[],"filing_date":"2016-02-09T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M","H02M","H02M"],"num_claims":20,"abstract":"A control circuit is provided for a buck converter that includes at least an inductor coupled to an output of the buck converter. The control circuit includes a power switch configured for coupling to a line voltage and configured for charging the inductor, an input line voltage sampling circuit, and a constant-voltage (CV) and constant-current (CC) control module coupled to the power switch. During a charging period of the inductor, the CV and CC control module is configured to control the power switch to provide a constant output current by maintaining a constant peak inductor current, even when the input line voltage changes. During a discharging period of the inductor, the CV and CC control module is configured to monitor the sensed output voltage to control the power switch to provide a constant output voltage."},"analysis":{"summary":"The Constant-voltage and Constant-current Buck Converter and Control Circuit patent introduces a novel control circuit for buck converters, ensuring stable output voltage and current even under varying input voltage conditions. The problem being solved is the instability of traditional buck converters, which can lead to inefficient power conversion and device damage. The key technical approach involves an input line voltage sampling circuit and a CV/CC control module that actively regulates the power switch to maintain a constant peak inductor current during charging and a constant output voltage during discharging.\n\nThe business value of this innovation lies in its ability to improve the performance and reliability of a wide range of electronic devices, from portable electronics to industrial power supplies. By ensuring stable power conversion, the Constant-voltage and Constant-current Buck Converter and Control Circuit can extend battery life, improve LED lighting efficiency, and enhance the overall performance of electronic systems. The market opportunity is significant, as the demand for efficient and reliable power conversion continues to grow across various industries.\n\nThis technology can be applied in numerous applications, including battery chargers, LED drivers, power adapters, and industrial power supplies. Its ability to maintain stable output voltage and current under varying input conditions makes it particularly valuable in applications where power fluctuations are common. The Constant-voltage and Constant-current Buck Converter and Control Circuit offers a competitive advantage by providing a more robust and efficient power conversion solution compared to traditional buck converters. As a result, this innovation is well-positioned to capture a significant share of the growing power electronics market.","layman_explanation":"The Constant-voltage and Constant-current Buck Converter and Control Circuit patent addresses a fundamental challenge in power electronics: ensuring a stable and consistent power supply to electronic devices, regardless of fluctuations in the input power source. This is particularly crucial for devices that rely on a consistent voltage or current to operate efficiently and reliably.\n\n**1. What Problem Does This Solve?**\nMany electronic devices, such as smartphones, laptops, and LED lighting systems, require a stable and consistent power supply to function correctly. However, the power source can fluctuate due to various factors, such as changes in the input voltage or variations in the load. These fluctuations can lead to inefficient operation, reduced performance, and even damage to the device. Existing power conversion solutions often struggle to maintain a stable output under these varying conditions.\n\n**2. How Does It Work?**\nThe Constant-voltage and Constant-current Buck Converter and Control Circuit works by using a sophisticated control system to regulate the output voltage and current of a buck converter. A buck converter is a type of power converter that steps down the voltage from a higher level to a lower level. The control system in this patent includes an input line voltage sampling circuit and a CV/CC control module. The input line voltage sampling circuit monitors the input voltage and provides this information to the CV/CC control module. The CV/CC control module then adjusts the power switch to maintain a constant peak inductor current during the charging period and a constant output voltage during the discharging period. This dual-mode operation allows the buck converter to operate efficiently in both CV and CC modes, ensuring a stable and consistent power supply.\n\n**3. Why Does This Matter?**\nThe Constant-voltage and Constant-current Buck Converter and Control Circuit has significant implications for a wide range of industries. In the consumer electronics market, it can improve the battery life of smartphones and laptops, enhance the performance of LED lighting systems, and increase the reliability of various electronic devices. In the industrial sector, it can provide a stable and reliable power supply to sensitive electronic equipment, reducing downtime and improving productivity. The market impact is substantial, as the demand for efficient and reliable power conversion continues to grow across various industries. The improved efficiency and reliability can translate to significant cost savings and increased customer satisfaction.\n\n**4. What's Next?**\nThe Constant-voltage and Constant-current Buck Converter and Control Circuit has the potential to be further developed and applied in emerging technologies such as electric vehicles and renewable energy systems. As the demand for energy-efficient and reliable power systems continues to grow, this technology is poised to play a key role in shaping the future of power electronics. The market adoption timeline is expected to be relatively rapid, as manufacturers of electronic devices are increasingly seeking solutions to improve the performance and reliability of their products. This presents a compelling investment opportunity for companies looking to capitalize on the growing demand for advanced power conversion technologies.","technical_analysis":"The Constant-voltage and Constant-current Buck Converter and Control Circuit patent details a sophisticated control circuit designed to enhance the performance of buck converters. The technical architecture comprises an input line voltage sampling circuit and a CV/CC control module. The input line voltage sampling circuit provides real-time information about the input voltage, enabling the control module to dynamically adjust the power switch to maintain a constant peak inductor current during the charging period.\n\nThe CV/CC control module employs a PWM control scheme to regulate the power switch. During the charging period, the duty cycle of the power switch is adjusted based on the input voltage and the desired output current. During the discharging period, the module monitors the output voltage and controls the power switch to maintain a constant output voltage. This is achieved through a feedback control loop that compares the output voltage to a reference voltage and adjusts the duty cycle of the power switch accordingly.\n\nThe implementation details of the control algorithm involve both analog and digital control techniques. Analog control techniques offer simplicity and low cost, while digital control techniques offer greater flexibility and programmability. The choice of control technique depends on the specific application requirements and the desired level of performance. The integration patterns involve seamless incorporation of the control circuit into existing buck converter designs. The performance characteristics include improved voltage and current stability, higher efficiency, and better performance under varying input voltage and load conditions.\n\nThe code-level implications involve the development of control algorithms and firmware for the CV/CC control module. These algorithms must be optimized for real-time performance and stability. The Constant-voltage and Constant-current Buck Converter and Control Circuit represents a significant advancement in power management technology, offering enhanced stability and efficiency compared to conventional buck converter designs. Its sophisticated control circuit and dual-mode operation provide a robust and efficient solution for achieving stable and reliable power conversion in a variety of applications.","business_analysis":"The Constant-voltage and Constant-current Buck Converter and Control Circuit patent presents a significant business opportunity in the power electronics market. The market opportunity size is substantial, as the demand for efficient and reliable power conversion continues to grow across various industries. The competitive advantages of this technology include improved voltage and current stability, higher efficiency, and better performance under varying input voltage and load conditions.\n\nThe revenue potential is significant, as the Constant-voltage and Constant-current Buck Converter and Control Circuit can be applied in numerous applications, including battery chargers, LED drivers, power adapters, and industrial power supplies. The business models that can be employed include licensing the technology to manufacturers of power electronic devices, selling integrated circuits that incorporate the control circuit, and providing consulting services to companies that want to implement the technology in their products.\n\nThe strategic positioning of the Constant-voltage and Constant-current Buck Converter and Control Circuit is strong, as it offers a more robust and efficient power conversion solution compared to traditional buck converters. This makes it particularly valuable in applications where power fluctuations are common. The ROI projections are favorable, as the improved performance and reliability of the technology can lead to significant cost savings and increased customer satisfaction. The Constant-voltage and Constant-current Buck Converter and Control Circuit is well-positioned to capture a significant share of the growing power electronics market, offering a compelling value proposition to both manufacturers and end-users.","faqs":null,"topics":["buck converter","constant voltage","constant current","power electronics","control circuit"],"tech_cluster":null},"seo":{"title":"Constant-voltage/Constant-current Buck Converter - US-9853542","description":"Explore the Constant-voltage and Constant-current Buck Converter patent: stable power, efficient conversion, and robust control for diverse applications.","keywords":["buck converter","constant voltage","constant current","power electronics","control circuit","power supply","LED driver","battery charger","patent","patent US-9853542"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9853542","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9853542","citation_suggestion":"Patentable. \"Constant-voltage and constant-current buck converter and control circuit\" (US-9853542). https://patentable.app/patents/US-9853542","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9853542","json":"https://patentable.app/api/llm-context/US-9853542","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:59:48.704Z"}