ZVS Full Bridge PWM Controller The ISL6551IR is a high-performance 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 (now Renesas Electronics)
- **Part Number:** ISL6551IR
- **Type:** PWM Controller
- **Package:** 28-Lead SOIC (Small Outline Integrated Circuit)
- **Input Voltage Range:** Typically 5V or 12V (specific range depends on application)
- **Output Voltage Range:** Adjustable (depends on external components)
- **Switching Frequency:** Adjustable (typically up to 1MHz)
- **Duty Cycle:** Up to 100%
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The ISL6551IR is a multi-phase PWM controller designed for high-efficiency voltage regulation in power supply applications, particularly for microprocessors and other high-current DC-DC converters. It supports multi-phase operation for improved thermal performance and ripple reduction.
### **Features:**
- **Multi-Phase Operation:** Supports 2 to 4 phases for balanced current sharing.
- **Precision Voltage Regulation:** Adjustable output with tight tolerance.
- **Overcurrent Protection:** Monitors and protects against excessive current.
- **Overvoltage Protection (OVP):** Safeguards the load from voltage spikes.
- **Programmable Switching Frequency:** Allows optimization for efficiency and component size.
- **Differential Remote Sensing:** Ensures accurate voltage regulation at the load.
- **Power-Good Output:** Provides a signal indicating stable output voltage.
- **Soft-Start Function:** Prevents inrush current during startup.
This information is based on the manufacturer's datasheet and technical documentation. For detailed application notes, refer to the official datasheet from Renesas Electronics.
