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VIPER20B from ST,ST Microelectronics

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VIPER20B

Manufacturer: ST

SMPS PRIMARY I.C.

Partnumber Manufacturer Quantity Availability
VIPER20B ST 325 In Stock

Description and Introduction

SMPS PRIMARY I.C. The VIPER20B is a high-voltage converter manufactured by STMicroelectronics. It is part of the VIPerPlus family, designed for offline power supplies.  

### **Key Specifications:**  
- **Input Voltage Range:** 9V to 38V (DC)  
- **Output Power:** Up to 20W (depending on configuration)  
- **Switching Frequency:** 60 kHz (fixed)  
- **Integrated Power MOSFET:** 800V avalanche-rugged  
- **Standby Power Consumption:** <30mW at 230V AC  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** SO-16  

### **Features:**  
- **High-Voltage Startup Circuit:** Eliminates the need for an external startup resistor.  
- **PWM Current-Mode Control:** Ensures stable operation.  
- **Built-in Protection Features:**  
  - Overvoltage protection (OVP)  
  - Overcurrent protection (OCP)  
  - Thermal shutdown  
  - Short-circuit protection  
- **Soft Start:** Reduces inrush current.  
- **Frequency Jittering:** Reduces EMI emissions.  
- **Low Standby Power:** Compliant with energy-saving standards.  

### **Applications:**  
- AC/DC converters for appliances  
- Auxiliary power supplies  
- LED drivers  
- Industrial power supplies  

This device is optimized for cost-effective, compact, and efficient power supply designs.

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