The ISL95859DHRTZ is a multi-phase PWM regulator from Intersil, designed to control the voltage regulation of CPUs and GPUs in various computing platforms. It is a highly integrated solution that combines several control and protection features to ensure stable and efficient power delivery.

Applications:

• Notebook computers
• Desktop computers
• Server platforms
• Graphics cards
• Embedded systems requiring precise voltage regulation

Features:

• Multi-phase operation: Enables high current delivery with excellent thermal performance.
• PWM control: Provides precise voltage regulation and fast transient response.
• Integrated MOSFET drivers: Simplifies the design and reduces the number of external components.
• Programmable switching frequency: Allows optimization for efficiency or transient response.
• Overcurrent protection (OCP): Protects the load and the regulator from damage.
• Overvoltage protection (OVP): Prevents the output voltage from exceeding safe limits.
• Undervoltage protection (UVP): Shuts down the regulator if the input voltage is too low.
• Remote sensing: Compensates for voltage drops across the load.
• Power good output: Indicates the status of the output voltage.

Benefits:

• High efficiency: Reduces power consumption and heat generation.
• Precise voltage regulation: Ensures stable operation of the load.
• Fast transient response: Minimizes voltage droop during load changes.
• Robust protection features: Prevents damage to the load and the regulator.
• Simplified design: Reduces the number of external components and the design effort.
• Increased system reliability: Ensures stable and reliable operation of the system.

Additional Details:

The ISL95859DHRTZ supports various operating modes and includes advanced features such as adaptive dead-time control and phase shedding to optimize efficiency under different load conditions. It is typically used with external MOSFETs to provide the required current capability for the specific application. It is available in a compact package, making it suitable for space-constrained applications. Datasheet provides detailed electrical characteristics, timing diagrams, and application circuit examples.