PT6122A

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DC DC Converters

A DC-DC converter is an electronic power supply component that converts one type of direct current (DC) voltage or current to another type of DC voltage or current. These converters are used in a variety of product applications, including laptop computers, cellular phones, and remote sensing devices. DC-DC converters provide benefits including improved performance, lower cost, and better power efficiency compared to separate power supplies. The combination of these advantages makes DC-DC converters a popular choice for many products.

The PT6122A is a programmable DC-DC converter designed for point-of-load (POL) applications. The device is a single-chip solution for voltage conversion, feature rich, highly integrated, and capable of delivering up to 6 A of output current over a wide input voltage range. The PT6122A operates from a 4.5 V to 18 V input voltage range and can deliver an output voltage from 0.8 V to 3 V in 0.05 V steps.

Application Field

The PT6122A device is suitable for a variety of applications that require a wide input voltage range. These include cell phone base stations, telecom systems, network servers, and low power bus voltage requirements in industrial/automotive/medical applications. It is also the ideal device for notebook PCs and other consumer electronics product applications such as TVs, digital cameras, and set-top boxes.

The device is also designed to perform efficiently when operating at high power levels or in harsh noise environments such as power amplifiers, digital video applications, instrumentation, RF power amplifiers, and any other cost-sensitive POE applications.

Working Principle

The PT6122A device uses a proprietary control topology that combines control and compensation circuits in an optimized, integrated design. It is an interleaved buck converter that can be used in either a single- or multi-phase configuration. The interleaving of the control circuitry allows for a higher power density and higher output current than a single-phase buck converter.

The PT6122A device utilizes a pin-programmable feature to enable the user to select the desired output voltage in 1/3 voltage increments from 0.8V to up to 3.0V. Additionally, the device includes a power-good output and an enable pin, with an Operating Frequency current limit that can be programmed to a maximum of 6A.

The device includes a proprietary on-chip PFC control algorithm that maximizes power conversion efficiency. The device also features a high-speed, on-chip, low-side MOSFET sensing circuit to provide a unique tracking feature that ensures a stable output voltage. The device\'s proprietary control structure has been designed to provide a consistent, accurate, and reliable output voltage regulation over the operating temperature range.

In addition, the device includes a variety of integrated protective features such as output-voltage over-current protection, output-voltage over-voltage protection, and output-voltage under-voltage protection, which make it ideal for demanding applications in which reliability and accuracy are of utmost importance.

The PT6122A device is an ideal choice for applications that require a wide input voltage range, high efficiency, and reliable performance. With its vast array of integrated features, the device can be used in a variety of power conversion applications.

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