PWM Controller, 2-4 Phase, 6-Bit VID, V OUT = 0.8375 to 1.60V, ?.5% Reg, R DS (on)sensing and Internal Temp Compensation, >1MHz operation, Application = uP Core Voltage VR10.X, use with HIP6601B The ISL6556B is a multi-phase PWM controller manufactured by Intersil (now part of Renesas Electronics). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Input Voltage Range:** 5V to 12V
- **Output Voltage Range:** 0.8V to 5.5V
- **Number of Phases:** Configurable for 2, 3, 4, 5, or 6 phases
- **Switching Frequency:** Adjustable from 50kHz to 1MHz per phase
- **Duty Cycle Range:** 0% to 100%
- **Current Sensing:** Precision differential current sensing
- **Voltage Positioning:** Adjustable active voltage positioning (AVP)
- **Protection Features:** Overvoltage, undervoltage, overcurrent, and overtemperature protection
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 40-lead QFN (6mm x 6mm)
### **Descriptions:**
- The ISL6556B is a high-performance, multi-phase PWM controller designed for VRM (Voltage Regulator Module) and VRD (Voltage Regulator Down) applications.
- It supports Intel® VRM 10.x and AMD® Hammer™ specifications.
- The controller integrates advanced control algorithms for precise voltage regulation and transient response.
- It features adaptive phase shedding for improved efficiency at light loads.
### **Features:**
- **Multi-Phase Operation:** Scalable from 2 to 6 phases for high-current applications.
- **Precision Voltage Regulation:** ±0.5% system accuracy over temperature.
- **Dynamic Phase Management:** Automatically adjusts the number of active phases based on load conditions.
- **Differential Remote Voltage Sensing:** Ensures accurate output voltage regulation.
- **Programmable Soft-Start:** Prevents inrush current during startup.
- **Overcurrent Protection:** Uses MOSFET RDS(ON) sensing or external sense resistors.
- **Power-Good Output:** Monitors output voltage status.
- **Synchronization:** Supports external clock synchronization.
For exact details, refer to the official datasheet from Renesas Electronics.
