P9023-1AHGIX8

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The P9023-1AHGIX8 is a multi-channel, synchronous step-down DC/DC converter designed for compact, high-density system applications. It is based on current mode control architecture and features adjustable operating frequency, enabling fast transient responses coupled with high efficiency and low output ripple. The device also features an inherent sequencing capability that can be controlled via an onboard I2C interface.This part is packed in a small 5mm x 5mm VQFN package and supports an input voltage ranging from 4.5V-20V and an output voltage ranging from 0.6V-15V.

Application Fields

The P9023-1AHGIX8 is an ideal choice for many different applications including computer peripherals, automotive and consumer electronics. With its wide input range, current accuracy and capacity, this part is an excellent choice for low voltage, high current applications such as LCD backlight driving, LED dimming, and power supply solutions used in communication systems and wireless products. This part is also well suited for motor control and industrial automation where precise control and fast transient response are necessary. Additionally, this part can be used in battery chargers, gaming systems, and white goods.

Working Principle

The P9023-1AHGIX8 is based on a current mode control architecture. This architecture employs an efficient current sensing and comparison circuit which performs slope modulation without the need for an error amplifier or a power MOSFET. This part is able to adjust its operating frequency in response to changing load conditions which provides a faster transient response time and higher output power with lower needs for correcting output voltages. The device is also able to maintain high efficiency across a wide range of loads and input voltages, making it particularly well suited for mobile applications. Additionally, the part features an inherent soft start, over-current protection and thermal shutdown capabilities.

The power conversion is performed with two sets of power MOSFETs. The first set of power MOSFETs, referred to as the high-side transistors, is responsible for driving the inductor and generating the output voltage. The second set of power MOSFETs, referred to as the low-side transistors, is responsible for sensing the current and controlling the inductor current. In order to maintain an efficient and accurate current flow, the two transistors are connected in series and the voltage at the midpoint of the two transistors is used to sense the current.

The P9023-1AHGIX8 is also equipped with an I2C interface. This interface can be used to program the output voltage, the switching frequency and for sequencing different supplies and loads. The I2C interface allows for easy configuration and can be used to enable advanced features such as brownout protection, pre-bias enable/disable and sequence up/down. This interface is also used for communication and monitoring of the power line.

Overall, the P9023-1AHGIX8 is a highly efficient and reliable multi-channel power drain with built-in features that enable it to be used in a wide variety of applications. Its small size and high power density make it a great choice for space constrained applications such as laptop computers, smartphones, tablets and portable electronics.

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