MAX16922ATPH/V+

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Power management integrated circuits (PMICs) are chips that regulate and deliver power to an electronic circuit. Specialized PMIC, such as the MAX16922ATPH/V+, are designed to provide better performance and power for specific applications. This article will discuss the application field and working principle of the MAX16922ATPH/V+.

Application Field

The MAX16922ATPH/V+ is a high-efficiency, adjustable, current-mode PMIC designed to power portable consumer electronics. It is designed to meet the stringent efficiency and performance requirements of today\'s consumer portable applications. The device is optimized to provide efficient power conversion and low thermal dissipation, as well as superior ac line regulation performance. The built-in power factor correction (PFC) technology greatly improves the power factor achieved on a port system. In addition, the MAX16922ATPH/V+ provides excellent system transient response with very low output ripples.

The MAX16922ATPH/V+ is well-suited for use in a wide range of consumer applications, such as digital still cameras, MP3 players, portable audio, GPS devices, video and video game players, and other portable consumer electronics. It is also suitable for use in applications that require high efficiency, low noise, and high power factor accuracy, such as set-top boxes, digital video recorders, and medical equipments.

Working Principle

The MAX16922ATPH/V+ is based on an adaptive, constant on-time, critical conduction mode topology. The device is designed to operate in either discontinuous conduction mode (DCM) or continuous conduction mode (CRM). In DCM operation, the operating frequency is fixed depending on the load current and inductor value. In CRM operation, the operating frequency is adjusted at light load conditions to ensure the peak efficiency across the whole load range. This ensures that the device not only has high efficiency, but also maintains strong system performance regardless of load.

The current-mode pacing of the MAX16922ATPH/V+ provides fast response to load changing or line voltage variation. The internal circuitry allows for accurate output voltage regulation and very low output ripples. The PFC loop includes fast response loops that compensate the required input current for the high power factor. This provides the high power factor accuracy that is needed for today\'s portable electronics applications.

The MAX16922ATPH/V+ also has an integrated protection mechanism. The device provides a protection circuit in the event of an overload, output open circuit, over temperature, over voltage, or under voltage condition. The integrated protection mechanism provides protection while maintaining system integrity and reliability. The device\'s start up delay allows for proper system stability and ensures the device is in a safe start-up condition.

The MAX16922ATPH/V+ is a highly integrated PMIC that provides a high level of power efficiency and system performance for a wide range of portable consumer electronic applications. It is designed for use in applications that require tight voltage and power factor accuracy, excellent transient response, and low noise. The device\'s adaptive current-mode control and integrated protection mechanism provide reliable operation even under extreme conditions.

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