ISL6534CVZ

Voltage/Current - Output 3:	Controller
Base Part Number:	ISL6534
Supplier Device Package:	24-TSSOP-EP
Package / Case:	24-TSSOP (0.173", 4.40mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	3.3 V ~ 12 V
w/Sequencer:	Yes
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	Controller
Voltage/Current - Output 1:	Controller
Frequency - Switching:	300kHz ~ 1MHz
Number of Outputs:	3
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (2), Linear (LDO) (1)
Part Status:	Obsolete
Packaging:	Tube

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Introduction of ISL6534CVZ

ISL6534CVZ is a multi-output, integrated Digital Multi-Phase (DMP) voltage regulation system with a strong switching power supply controller. It is also a step-down controller optimized for high-performance and low-cost power applications. This voltage regulator can operate in a wide range of wattage, from 5W to 40W with 4-phase DMP PWM, enabling high efficiency. The built-in advanced control loop architecture achieves fast transient response and excellent line and load regulation.

Application Field of ISL6534CVZ

ISL6534CVZ is suitable for high current and high efficiency applications, such as gaming consoles, set-top boxes and HDTVs, as well as for server and storage systems with high power density. It can also be used in embedded systems and multi-rail designs in automotive, industrial and medical applications.

Features of ISL6534CVZ

ISL6534CVZ offers the following features:• Multi-output, integrated Digital Multi-Phase (DMP) voltage regulator with 4-phase DMP PWM• Supports 4-phase or 5-phase PWM mode operation• High current efficiency• Wide operating voltage range from 0.4V to 3.2V• Low power loss for improved power conversion efficiency• Programmable frequency up to 1MHz• Integrated linear-regulating transition (LRT) control• High-Current Gate Drive• Adjustable over-current protection

Working Principle of ISL6534CVZ

The ISL6534CVZ operates as a step-down controller to convert an input voltage into multiple output rails. It uses digital multi-phase pulse width modulation (PWM) to achieve high current and efficiency. The IBIS model of the ISL6534CVZ is based on a serial digital interface and a phase power circuit. The phase power and the serial interface synchronize the PWM with the switch control logic. The PWM controller uses 5-phase or 4-phase mode according to the output requirement. The number of phases used affects the power ripple, noise, efficiency and current capability of the generated power supply. A high current gate driver provides efficient switching of the regulator output transistors.This IC also includes support for a linear-regulating transition (LRT) control, which ensures smooth transition between the current-source control and the PWM control. The built-in advanced control loop architecture provides fast transient response and excellent line and load regulation. The IC also provides programmable over-current protection, soft start and spread spectrum to further customize the application. In addition, ISL6534CVZ supports I2C and PMBus communications to provide system state protection, including over voltage and over temperature protection.

Conclusion

ISL6534CVZ is a multi-output digital multi-phase (DMP) voltage regulator with a strong switching power supply controller. It is suitable for applications requiring high current and high efficiency, such as gaming consoles and set-top boxes. It also has high current gate drive, adjustable over-current protection, and linear-regulating transition (LRT) control, providing fast transient response and excellent line and load regulation. Its I2C and PMBus communications support system state protection, including over voltage and over temperature protection.

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