ISL6520ACBZ

Frequency - Switching:	300kHz
Base Part Number:	ISL6520A
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Phase Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 5.5 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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ISL6520ACBZ Application Field and Working Principle

The ISL6520ACBZ is a power management integrated circuit (PMIC) from Intersil that provides a highly integrated and efficient solution for a wide range of applications. It is designed specifically for use in distributed power architectures, where multiple DC/DC converters are regulated by a single controller. This PMIC includes an integrated high-speed PWM controller, two synchronous Buck regulators, two synchronous Buck-Boost regulators, and four general-purpose I/Os, making it suitable for a variety of applications such as power supply systems and motor control systems. This article provides an overview of the application field and the working principle of the ISL6520ACBZ.

Application Field

The ISL6520ACBZ PMIC is ideal for power supply systems in distributed power architecture (DPA) where multiple DC/DC converters are regulated by a single controller. It is capable of providing primary power for multiple voltage levels and/or for various system supplies such as memory, processor cores, I/O, and other system supplies that may require different voltages or current levels. It supports up to two synchronous Buck regulators and two synchronous Buck-Boost regulators and enables the simultaneous monitoring, control, and protection of each power rail.The ISL6520ACBZ PMIC can also be used in a variety of motor control applications, including brushless DC and step motors, actuators, and pumps. It features advanced features including speed and position control, over-current and temperature monitoring, and automatic start/stop of the motor power supply.

Working Principle

The ISL6520ACBZ PMIC includes an integrated high-speed PWM controller, two synchronous Buck regulators, two synchronous Buck-Boost regulators, and four general-purpose I/Os. The PWM controller is used to generate the necessary control signals for the Buck and Buck-Boost regulators. The Buck regulators take an input voltage from a source and step it down to the desired output voltage. The Buck-Boost regulators take an input voltage from a source and step it up or down to the desired output voltage.The ISL6520ACBZ also includes a Digital Power System Manager (DSM) that can detect faults and set alarm thresholds for all the power rails. The DSM additionally provides voltage and current protection, over-temperature detection, and support for generator logic and secondary power sequencing.The ISL6520ACBZ PMIC features synchronous rectification, allowing for high efficiency operation, high power density, and low thermal dissipation. The device also offers a switching frequency up to 1MHz, allowing for small inductors and output capacitors, leading to increased efficiency and reduced overall system size and cost.The ISL6520ACBZ PMIC is an easy-to-use device that enables efficient and cost-effective solutions for all power supplies in the DPA and for motor control applications. This PMIC can provide the necessary power supply and monitoring solutions for a wide range of applications, typically requiring very few external components. With its integrated high-performance features and low external component count, the ISL6520ACBZ provides designers with a simple and reliable power management solution.

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