Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller The ISL6522IB is a dual synchronous buck PWM controller manufactured by INTERSIL (now part of Renesas Electronics). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Input Voltage Range:** 4.5V to 5.5V
- **Output Voltage Range:** Adjustable from 0.9V to 5.5V
- **Switching Frequency:** 300kHz
- **Dual Output Channels:** Two independent synchronous buck controllers
- **Duty Cycle Range:** 0% to 100%
- **Current Sensing:** Uses MOSFET RDS(ON) or external sense resistors
- **Protection Features:** Overvoltage, undervoltage, and overcurrent protection
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 16-Lead SOIC
### **Descriptions:**
The ISL6522IB is a high-efficiency, dual-output PWM controller designed for synchronous buck DC-DC converters. It is commonly used in applications requiring precise voltage regulation, such as power supplies for motherboards, graphics cards, and embedded systems. The controller integrates two independent PWM channels, allowing for dual-output voltage regulation with minimal external components.
### **Features:**
- **Dual Independent PWM Controllers:** Supports two synchronous buck regulators.
- **Precision Reference Voltage:** 0.9V ±1% accuracy.
- **Adjustable Soft-Start:** Prevents inrush current at startup.
- **Overvoltage Protection (OVP):** Shuts down output if voltage exceeds safe limits.
- **Undervoltage Lockout (UVLO):** Ensures proper operation within input voltage range.
- **Overcurrent Protection (OCP):** Monitors output current to prevent damage.
- **Power-Good Output:** Indicates stable output voltage.
- **Synchronous Rectification:** Improves efficiency by reducing power loss.
- **Low Standby Current:** Enhances power-saving performance.
This information is based on the manufacturer's datasheet and technical documentation. For detailed application notes or additional specifications, refer to the official datasheet from Renesas Electronics (formerly INTERSIL).
