ISL6307IRZ

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PMIC - Voltage Regulators - DC DC Switching Controllers

The ISL6307IRZ is a member of the family of DC-DC switching controllers from Intersil, specifically designed for step-down and step-up applications. It is intended to be used as a secondary side controller in power adapter designs. The ISL6307IRZ operates in Switching mode, allowing it to switch non-isolated DC outputs while providing excellent transient response as well as protection against fault conditions. It is a monolithic device that incorporates all of the control, drive and protection circuitry required for an efficient and reliable switching design.

Application Field

The ISL6307IRZ DC-DC controllers can be used in multiple applications including but not limited to: notebook and desktop PC power adapters, gaming console power adapters, audio amplifiers and other power electronic devices. Additionally, its small package size and low component count makes it ideal for use in portable devices such as mobile phones, tablets and other devices.

Working Principle

The ISL6307IRZ utilizes a current mode architecture typically used in DC-DC switching controllers. This type of architecture requires very few external components and allows for a high degree of control over the output. The switching frequency can be programmed by an external resistor, allowing the user to adjust it to an optimal operating frequency. Control is achieved through an internal loop that maintains the output voltage at a predetermined level according to the voltage feedback pin connection to the output. Additionally, there is a programmable soft-start that prevents the output from experiencing large inrush currents during start-up.

The ISL6307IRZ also features over-current, over-temperature and under-voltage protection features to ensure that the device does not malfunction due to unsafe conditions. The device will shut down in the event any of these conditions occurs. This makes it well suited to use in portable devices where battery protection is critical.

In conclusion, the ISL6307IRZ is an ideal DC-DC switching controller for a variety of applications. Its small package size, low component count, programmable switching frequency and protection features make it an ideal choice for powering portable devices.

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