Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application The ISL6556ACB 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:**
- **Manufacturer:** Intersil (Renesas Electronics)
- **Part Number:** ISL6556ACB
- **Type:** Multi-Phase PWM Controller
- **Input Voltage Range:** 5V to 12V
- **Output Voltage Range:** Adjustable (typically for VRM applications)
- **Number of Phases:** Configurable (supports 2 to 4 phases)
- **Switching Frequency:** Adjustable (typically up to 1MHz per phase)
- **Package:** 32-Lead LQFP (Low-Profile Quad Flat Package)
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
- The ISL6556ACB is a high-performance PWM controller designed for multi-phase voltage regulator modules (VRMs) used in powering microprocessors and other high-current applications.
- It provides precise voltage regulation and supports dynamic phase shedding for improved efficiency under varying load conditions.
- The controller includes overcurrent protection, overvoltage protection (OVP), and undervoltage protection (UVP) features.
### **Features:**
- **Multi-Phase Operation:** Supports 2, 3, or 4-phase configurations.
- **Adaptive Phase Control:** Automatically adjusts the number of active phases for optimal efficiency.
- **Precision Voltage Regulation:** ±1% system accuracy over temperature.
- **Programmable Switching Frequency:** Allows optimization for efficiency and component size.
- **Differential Remote Voltage Sensing:** Ensures accurate output voltage regulation.
- **Overcurrent Protection:** Monitors and protects against excessive current.
- **Overvoltage and Undervoltage Protection:** Safeguards the load from voltage spikes or drops.
- **Power-Good Output:** Provides a signal indicating stable output voltage.
- **Thermal Monitoring:** Supports external temperature sensing for thermal management.
This information is based on the manufacturer's datasheet and technical documentation.
