Overview
The ISL95857AHRTZ-T, produced by Renesas Electronics America Inc, is a highly integrated voltage regulator controller designed to support Intel microprocessors compliant with the IMVP8™ (Intel Mobile Voltage Positioning 8) specification. This controller provides a complete power solution for Intel CPUs, managing core, graphics, and system agent rails. It features Renesas’s Robust Ripple Regulator (R3™) technology, which offers advantages such as faster transient settling time, variable switching frequency, and improved light-load efficiency.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | TQFN-40 (5x5) |
| Number of Outputs | 3 (VR A, VR B, VR C) |
| VR A Configuration | 1-phase only |
| VR B Configuration | Configurable for 2- or 1-phase |
| VR C Configuration | 1-phase only |
| System Accuracy | 0.5% over temperature |
| Current Sensing Methods | DCR current sensing with NTC thermistor, precision resistor current sensing |
| Remote Voltage Sense | Differential remote voltage sensing |
| Switching Frequency | Adjustable |
| Protection Features | Overcurrent protection, power-good indicator (VR_READY) |
| Interface | Intel serial data bus interface |
Key Features
- Supports Intel serial data bus interface
- PS4 Power Domain entry/exit fully supported
- System input power monitor (PSYS) supported
- Three output controller with programmable SVID address and resistor programmable address selection
- Supports multiple current sensing methods including lossless inductor DCR current sensing and precision resistor current sensing
- Differential remote voltage sensing
- Adjustable switching frequency and programmable I_MAX
- Low supply current in PS4 state
- Compliant with IMVP8™ PS4 power requirements
- Supports Intel DrMOS power stages or discrete power stages using the Intersil ISL95808 high voltage synchronous rectified buck MOSFET driver
Applications
The ISL95857AHRTZ-T is designed for use in power management systems for Intel microprocessors, particularly those requiring compliance with the IMVP8™ specification. This includes applications in laptops, desktops, and other computing systems where efficient and reliable power delivery to the CPU is critical. The controller’s flexibility in supporting various power stage configurations and its advanced features make it suitable for a wide range of computing and embedded systems.
Q & A
- What is the ISL95857AHRTZ-T used for?
The ISL95857AHRTZ-T is a voltage regulator controller designed to support Intel microprocessors compliant with the IMVP8™ specification.
- How many output channels does the ISL95857AHRTZ-T have?
The controller has three output channels: VR A, VR B, and VR C.
- What are the configuration options for VR B?
VR B is configurable for either 2-phase or 1-phase operation.
- What is the system accuracy of the ISL95857AHRTZ-T?
The system accuracy is 0.5% over temperature.
- What current sensing methods are supported by the ISL95857AHRTZ-T?
The controller supports DCR current sensing with a single NTC thermistor and precision resistor current sensing.
- Does the ISL95857AHRTZ-T support remote voltage sensing?
- Is the switching frequency adjustable on the ISL95857AHRTZ-T?
- What protection features does the ISL95857AHRTZ-T include?
The controller includes overcurrent protection and a power-good indicator (VR_READY).
- Does the ISL95857AHRTZ-T support Intel DrMOS power stages?
- What is the package type of the ISL95857AHRTZ-T?
The package type is TQFN-40 (5x5).
