ISL8560IRZ-T

Voltage - Output (Min/Fixed):	1.21V
Base Part Number:	ISL8560
Supplier Device Package:	20-QFN (6x6)
Package / Case:	20-VQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	100kHz ~ 600kHz
Current - Output:	2A
Voltage - Output (Max):	55V
Series:	--
Voltage - Input (Max):	60V
Voltage - Input (Min):	9V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ISL8560IRZ-T Application Field and Working Principle

DC-DC switching regulators are a type of DC-DC power converter that use switch-mode technology for higher efficiency at light loads. The ISL8560IRZ-T is a cost-effective, synchronous, and high-efficiency buck regulator from Intersil. It optimizes TSMC’s latest 16nm process node technology and features a wide input voltage range, accurate load line control, and a low RDS(on) internal switch.

Application Field

The ISL8560IRZ-T has applications in a variety of fields. Notable aspects include its high switching frequency, small form factor, and low quiescent current operation, making it suitable for a wide range of applications in consumer, IoT, automotive, industrial and communications markets.The ISL8560IRZ-T is ideal for a wide variety of Point of Load (PoL) and DC-DC regulation applications, including:

• Mobile and wireless devices (smartphones, tablets, etc.)
• Battery powered applications (wearables and healthcare devices)
• High performance computing systems
• Networking switches and routers
• Automotive systems
• Industrial systems (data storage, industrial motor control, LED lighting, etc.)
• Telecommunications systems
• HEV/EV onboard battery charger

Working Principle

The ISL8560IRZ-T utilizes a synchronous buck switching converter topology to efficiently convert a higher input voltage (VIN) to a lower output voltage (VOUT). An internal power switch, optimized for low on-resistance (RDS(on)), is switched on and off by the control circuit at a high frequency, transferring power from the input supply to the output.The integrated Buck Regulator Block Diagram of the ISL8560IRZ-T (pictured below) illustrates the flow of its main power regulating components. The left side of the diagram shows the power components, which include the internal power switch, an error amplifier, three compensation components, and a voltage reference. The right side includes the control components, which are the oscillator, phase compensation, soft-start, and protection circuitry. The feedback path of the ISL8560IRZ-T ensures controlled and stable operation. The error amplifier monitors the output voltage by comparing it with an externally programmed voltage reference. If a discrepancy between the two voltages is detected, an error signal is generated and sent to the control circuit, which then adjusts the internal switch duty cycle accordingly.The compensation components in the ISL8560IRZ-T circuit design, along with the internal soft-start and phase compensation, ensure fast transient response and stability for a broad range of conditions. The ISL8560IRZ-T also provides cycle-by-cycle and over-current protection. The integrated over-temperature protection ensures safe operation while preventing the regulator from thermal runaway. In summary, the ISL8560IRZ-T is a synchronous buck regulator that is optimized for low RDS(on) and high-efficiency operation. It is a highly integrated and cost effective solution for applications in the consumer, automotive, industrial and communications markets, where high efficiency and a small form factor are paramount.

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