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L6591 from ST,ST Microelectronics

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L6591

Manufacturer: ST

Current mode PWM controller for Asymmetrical Half Bridge converter topology

Partnumber Manufacturer Quantity Availability
L6591 ST 9 In Stock

Description and Introduction

Current mode PWM controller for Asymmetrical Half Bridge converter topology The L6591 is a high-voltage resonant controller manufactured by STMicroelectronics. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:** STMicroelectronics  

### **Specifications:**  
- **Input Voltage Range:** Up to 600V (high-voltage operation)  
- **Operating Frequency Range:** Adjustable, typically up to several hundred kHz  
- **Driver Output Current:** Capable of driving power MOSFETs or IGBTs  
- **Supply Voltage (VCC):** Typically 12V to 20V  
- **Standby Power Consumption:** Low quiescent current in standby mode  
- **Protection Features:** Overvoltage protection (OVP), overload protection (OLP), brownout protection, and latch-off for fault conditions  
- **Package Type:** Typically available in SO-16 or similar packages  

### **Descriptions:**  
- The L6591 is designed for resonant half-bridge topologies, commonly used in power supply applications.  
- It integrates high-voltage level shifting for driving the high-side MOSFET in a half-bridge configuration.  
- The controller ensures soft-switching operation, improving efficiency and reducing EMI.  
- It is suitable for applications like AC-DC adapters, LED drivers, and industrial power supplies.  

### **Features:**  
- **High-Voltage Startup:** Built-in high-voltage startup circuit for direct connection to the rectified mains.  
- **Adjustable Frequency:** Allows tuning of the resonant operation for optimal performance.  
- **Soft-Start Function:** Ensures controlled startup to limit inrush currents.  
- **Interlocking Function:** Prevents cross-conduction in the half-bridge.  
- **Protection Mechanisms:** Includes overcurrent, overvoltage, and thermal shutdown protections.  
- **Low EMI:** Facilitates compliance with electromagnetic compatibility (EMC) standards.  

For exact electrical characteristics and application details, refer to the official STMicroelectronics datasheet.

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