ISF0509

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DC-DC converters are electrical components that are used to convert DC input into a higher or lower output voltage. They are also used to convert AC input into DC output. ISF0509 is a DC-DC converter from Infineon Technologies, specialized for embedded power applications. It is a high-efficiency, step-down, pulse-width modulated (PWM) and multi-phase device. It is designed to meet the performance, power, and cost requirements of low-voltage embedded applications requiring up to 40A or 1.2A output current, while maintaining good thermal efficiency.

The device features an integrated high-density synchronous step-down controller with adaptive voltage positioning, a 6V/170mV, 40A or 6V/170mV, 1.2A low output current digital PWM controller, an integrated synchronous rectifier, and complete diagnostics. It has a low quiescent current of 1uA and offers adaptive phase synchronization opposite-phase working modes for superior performance and efficiency.

ISF0509 has a wide input voltage range of 6V to 20V and integrative high-density synchronous switching regulator integrated circuit, enabling it to deliver up to 40A output current with excellent load and line regulation. It also offers up to 92% efficiency with an integrated synchronous FET (field-effect transistor) and is protected against under-voltage, over-voltage, over-current, and over-temperature.

This device offers an adjustable switching frequency from 260kHz to 1.2MHz. It has an optimized multi-phase operation with smooth transitions across output voltage ranges, enabling it to support dynamic load applications. It also features adjustable Soft Start and slew rate control for lower in-rush current. Self-trimming OVP (over-voltage protection) allows it to go over-current and over-temperature without having to manually adjust the circuit.

In addition to these features, ISF0509 has a low thermal resistance of ≤ 0.68°C/W, enabling it to operate at low temperatures and achieve system-level thermal efficiency. Its efficient multi-phase operation also allows tighter voltage regulation and helps reduce electronic noise.

Overall, ISF0509 is an ideal DC-DC converter solution for applications requiring up to 40A output current and low thermal resistance. Its features such as adjustable switching frequency, integrated synchronous FET, and low quiescent current make it a cost-effective and high-performance device for embedded power applications.

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