ISL6537CRZ-TR5160

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ISL6537CRZ-TR5160 is a popular Power Management IC (PMIC) for many specialized and intensive applications. It combines a variety of features such as voltage and current regulation, programmable power good signal and comprehensive protection functions.

The ISL6537CRZ-TR5160 can be used in various products with multiple voltage rails, network equipment, and communications systems requiring precise power management and control.

Overview

The ISL6537CRZ-TR5160 is a highly integrated power management solution that provides comprehensive system power management and control functions. Its primary features include:

• 2-phase+ dual output synchronous buck switching regulator
• Integrated low RDS(ON) power MOSFETs
• Programmable power good signal
• Programmable soft-start
• Pre-biased load support
• Integrated over-current protection
• Over-temperature protection

The ISL6537CRZ-TR5160 provides an accurate programmable voltage regulation tolerance of ±1.5 % over temperature with a ±5 % accuracy for the adjustable version. It also offers accurate current regulation without the need for external sense resistors due to integrated low on-resistance power MOSFETs.

Design

The ISL6537CRZ-TR5160 operates from a single 2.5V to 5.5V supply. It has an adjustable switching frequency up to 2 MHz, allowing for smaller external components and shorter lead times between board board designs. The operating temperature range is from -40°C to +125°C.

The device also has four programmable OTP (One Time Programmable) bits, allowing designers to customize their board design. The PCB layout can be customized in order to optimize layout area, allow maximum flexibility and ease of use, and reduce power dissipation.

The ISL6537CRZ-TR5160 has a comprehensive protection feature set designed to increase system reliability. It provides over-current protection, monitor voltage tracking, and soft-start that can be programmed with OTP parameters.

The device also has a power good feature, in which an open drain output will asserts high if all outputs are between the specified voltage output and accuracy. This is useful for applications such as monitoring the power up sequence.

Applications

The ISL6537CRZ-TR5160 is ideal for applications requiring multiple voltage rails for networking and communication equipment, small embedded systems, and other applications requiring precise power management and control. It is well suited for applications such as:

• Network Switches
• Digital Set-Top Boxes
• High-end Servers/Storage Systems
• Multi-board/Multi-processor Systems
• Telecommunications/Wireless Infrastructure
• Smart Home Control

Working Principle

The ISL6537CRZ-TR5160 is a buck-type power supply converter, meaning it steps down an input voltage to a lower output voltage with the help of an inductor. It consists of 4 identical channels, each capable of controlling its own voltage rail. The converter works by using a switching transistor, typically a MOSFET, to convert DC input voltage applied to its input terminal to a pulse width modulated DC voltage at its output terminals.

The voltage rails can in turn be used to power the components that require it, such as an FPGA or memory. These components will require specific voltage levels and current, which the ISL6537CRZ-TR5160 is able to provide. To do so, it regulates the output voltage by adjusting the duty cycle of the MOSFET and allowing for a more efficient and accurate power delivery.

Overall, the ISL6537CRZ-TR5160 provides a solution for applications requiring precise power management and control as well as comprehensive protection features. With its combination of features, the device is well-suited for many specialized and intensive applications.

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