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L4981BD from ST,ST Microelectronics

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L4981BD

Manufacturer: ST

POWER FACTOR CORRECTOR

Partnumber Manufacturer Quantity Availability
L4981BD ST 1365 In Stock

Description and Introduction

POWER FACTOR CORRECTOR The L4981BD is a high-voltage double-ended controller designed for resonant converters, manufactured by STMicroelectronics.  

### **Key Specifications:**  
- **Input Voltage Range:** Up to 600V  
- **Operating Frequency:** Adjustable, typically up to several hundred kHz  
- **Driver Output Current:** ±500mA (sink/source)  
- **Supply Voltage (VCC):** 10V to 20V  
- **Standby Current:** Low quiescent current for improved efficiency  
- **Protection Features:**  
  - Undervoltage lockout (UVLO)  
  - Overcurrent protection  
  - Soft-start functionality  
- **Package:** SO-16  

### **Descriptions & Features:**  
- Designed for **resonant half-bridge topologies** (LLC, ZVS, etc.).  
- **Double-ended control** for driving two power MOSFETs or IGBTs.  
- **Adaptive dead-time management** to optimize efficiency.  
- **Integrated high-voltage startup** for simplified power supply design.  
- **Precise frequency control** for resonant operation.  
- Suitable for **AC-DC power supplies, LED drivers, and industrial applications**.  

For exact electrical characteristics, refer to the official **STMicroelectronics datasheet**.

Application Scenarios & Design Considerations

POWER FACTOR CORRECTOR

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