ISL85415FRZ-T

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The ISL85415FRZ-T is a DC-DC switching regulator particularly suited for powering system processors.It offers efficient conversion, elimination of pre-regulators and better thermal performance than linear regulators. These advantages, in addition to its small size, short lead times and low cost, make DC-DC switching regulators the ideal choice for powering microprocessors.

Application Field

The ISL85415FRZ-T is a device intended for use as an intermediate bus voltage regulator in many processor-based systems. It is suitable for many different applications, including processors, microcontrollers, DSPs and FPGAs.Its high-efficiency current mode DC-DC switching regulator architecture allows for linear regulators to be eliminated, providing better dynamic response and higher efficiency.It is also used in automotive and industrial applications, where it provides a compact and efficient solution for regulating the system voltage supply.

Working Principle

The ISL85415FRZ-T is a high-efficiency current mode DC-DC switching regulator that uses an internal high-voltage (HV) N-channel metal-oxide-semiconductor (MOSFET) to form a power switching bridge.The device is triggered by an external resistor, R1, which sets the output voltage to the desired level. It uses a current-sense technique to regulate the output voltage, which is controlled by an external feedback pin that is connected to the processor core’s power supply. The DC-DC switching regulator also features a programmable soft-start, which prolongs the turn-on process and reduces the associated inrush current. Once the system is powered up, the soft-start time is automatically adjusted according to the system’s power supply demand. The DC-DC switching regulator also includes other features such as an adjustable over-current protection (OCP) and a power good indicator. The OCP is used to protect the device from over-current conditions, while the power good indicator indicates when the output voltage is within the specified operating range.

Conclusion

In conclusion, the ISL85415FRZ-T is a high-efficiency current mode DC-DC switching regulator that can replace linear regulators in many processor-based systems.It offers efficient conversion, eliminates pre-regulators, and provides better thermal performance compared to linear regulators.It is suitable for many different applications such as processors, microcontrollers, DSPs and FPGAs.It also features programmable soft-start, adjustable over-current protection and a power good indicator for maximum system efficiency and performance.

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