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L6591TR from ST,ST Microelectronics

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L6591TR

Manufacturer: ST

Current mode PWM controller for Asymmetrical Half Bridge converter topology

Partnumber Manufacturer Quantity Availability
L6591TR ST 1030 In Stock

Description and Introduction

Current mode PWM controller for Asymmetrical Half Bridge converter topology The L6591TR is a high-voltage resonant controller manufactured by STMicroelectronics.  

### **Specifications:**  
- **Input Voltage Range:** Up to 600V  
- **Frequency Range:** Adjustable up to several hundred kHz  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SO-16  
- **Control Method:** Resonant mode (ZVS/ZCS)  
- **Gate Driver Output Current:** Up to 0.5A (source/sink)  
- **Protection Features:** Overcurrent, overvoltage, and brownout protection  

### **Descriptions:**  
The L6591TR is designed for resonant half-bridge topologies, providing efficient power conversion in applications such as AC-DC adapters, LED drivers, and power supplies. It integrates advanced control logic for soft-switching operation, reducing switching losses.  

### **Features:**  
- **High-Voltage Startup Circuit** (eliminates the need for an auxiliary supply)  
- **Adjustable Dead-Time Control** (optimizes ZVS operation)  
- **Programmable Operating Frequency**  
- **Soft-Start Function** (reduces inrush current)  
- **Latched or Auto-Recovery Protection Modes**  
- **Low Power Consumption in Standby Mode**  

This IC is suitable for high-efficiency power conversion systems requiring precise resonant control.

Application Scenarios & Design Considerations

Current mode PWM controller for Asymmetrical Half Bridge converter topology

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