VN920SPTR-E

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VN920SPTR-E Application Field and Working Principle

The VN920SPTR-E is a basic power management integrated circuit (PMIC) used in a broad range of products to provide power distribution and regulation. It can provide up to three power rails and loads, with up to five switching regulators and one linear regulator. It is suitable for use in a variety of different applications, including embedded systems and digital home appliances.

Applications

The VN920SPTR-E power management IC can be used in a wide range of electronic systems, such as electrical home appliances, medical devices, automotive systems, and consumer electronics equipment. Its small overall size and low power consumption make it a perfect solution for those applications where size, power, and reliability are the highest priorities. Moreover, its integrated linear and switching power supply regulators make it suitable for an extended range of use cases, from mission-critical medical applications to everyday consumer applications.

Working Principle Of VN920SPTR-E

The VN920SPTR-E integrates both linear and switching power supply regulators to provide efficient and reliable power management. It features up to four output power rails, with each rail offering up to five switching regulators. The rails are connected through a centrally controlled, programmable, and fault-tolerant topology, which protects them from overload and short-circuit conditions. The integrated voltage and current detection circuits guarantee a safe and stable operation and prevent circuit behaviour over a wide range of operating conditions.

The integrated linear regulator functions as a power supply, providing a stable voltage at an adjustable output level. It also enables the user to set an Over-Current Protection (OCP) threshold for the current flowing through the output power rail. This protection can be achieved by programming a specific resistor value into the linear regulator, which automatically sets the OCP to trip when a current higher than the programmed value passes through it.

The integrated switching power supply regulators provide a lower output voltage and current capability than the linear regulator. The switching regulators are connected to the output power rails with a low-bounce MOSFET switch, allowing them to switch from one rail to another without creating a voltage spike or current peak. This makes the VN920SPTR-E highly suitable for applications where power management requirements vary greatly over time.

The VN920SPTR-E integrates a variety of other features and functions such as thermal shutoff, current monitoring, and over-temperature protection, making it an ideal choice for power management in embedded systems and digital home appliances.

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