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L6574 from ST,ST,ST Microelectronics

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L6574

Manufacturer: ST,ST

CFL/TL BALLAST DRIVER PREHEAT AND DIMMING

Partnumber Manufacturer Quantity Availability
L6574 ST,ST 25000 In Stock

Description and Introduction

CFL/TL BALLAST DRIVER PREHEAT AND DIMMING The L6574 is a high-voltage resonant controller manufactured by STMicroelectronics (ST). Below are the specifications, descriptions, and features based on the available knowledge base:

### **Specifications:**  
- **Input Voltage Range:** Up to 600V  
- **Operating Frequency Range:** Adjustable (typically up to several hundred kHz)  
- **Driver Output Current:** ±400mA (source/sink)  
- **Supply Voltage (VCC):** 12V to 20V  
- **Package:** SO-16 (16-pin Small Outline)  
- **Operating Temperature Range:** -40°C to +125°C  

### **Descriptions:**  
The L6574 is a high-voltage resonant controller designed for half-bridge resonant topologies, commonly used in power supplies, LED drivers, and induction heating applications. It integrates advanced control features to optimize efficiency and reliability in resonant converters.  

### **Features:**  
- **Zero Voltage Switching (ZVS):** Enables high efficiency by reducing switching losses.  
- **Adjustable Dead Time:** Optimizes performance for different resonant tank configurations.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Overcurrent Protection (OCP):** Safeguards against excessive current conditions.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the supply voltage range.  
- **Frequency Modulation Control:** Supports variable frequency operation for resonant converters.  
- **High-Voltage Level Shifter:** Allows direct interfacing with high-side MOSFETs.  

The L6574 is suitable for applications requiring high efficiency and precise control in resonant power conversion systems.

Application Scenarios & Design Considerations

CFL/TL BALLAST DRIVER PREHEAT AND DIMMING

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