The STMicroelectronics VIPER22ADIP-E is a highly integrated power supply IC designed for a variety of applications, particularly in the field of offline switch-mode power supplies (SMPS). This device is part of the VIPER family, which is well-known for its efficiency, compact design, and versatility in power management solutions. The VIPER22ADIP-E is specifically tailored for applications requiring higher power levels, making it suitable for consumer electronics, industrial equipment, and other power supply needs.

## Key Features

1. Wide Input Voltage Range: The VIPER22ADIP-E can operate directly from the AC mains voltage, with an input voltage range of 85V to 265V AC. This wide range allows for global application compatibility, making it suitable for various markets.

2. Integrated High-Voltage Power MOSFET: The device features an integrated high-voltage power MOSFET, which simplifies the design process and reduces the number of external components required. This integration leads to a more compact and cost-effective solution.

3. Output Power Capability: The VIPER22ADIP-E is capable of delivering up to 22W of output power in typical applications, making it suitable for medium power requirements.

4. Fixed Switching Frequency: The IC operates at a fixed switching frequency of 100 kHz, which helps optimize the balance between efficiency and size, allowing for smaller inductors and capacitors in the design.

5. Built-in Protection Features: The VIPER22ADIP-E includes several essential protection features to enhance reliability and safety:
- Overvoltage Protection (OVP)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Short-Circuit Protection (SCP)

6. Low Standby Power Consumption: Designed with energy efficiency in mind, the VIPER22ADIP-E minimizes standby power consumption, making it compliant with energy-saving regulations and standards.

7. Dimming Capability: The device supports dimming functions, which can be particularly useful in lighting applications, allowing for adjustable brightness levels.

8. Compact Package: The VIPER22ADIP-E is available in a DIP-8 package, which is suitable for space-constrained designs and easy integration into various applications.

## Electrical Specifications

- Input Voltage Range: 85V to 265V AC
- Output Power: Up to 22W
- Switching Frequency: 100 kHz
- Operating Temperature Range: -40°C to +125°C
- Startup Current: 20 µA (typical)
- Maximum Duty Cycle: 70%
- Output Voltage Regulation: ±5%
- Efficiency: Up to 85% (depending on the application and design)
- Output Voltage: Typically configurable for various output voltages, commonly 12V or 15V.

## Applications

The VIPER22ADIP-E is suitable for a wide range of applications, including:

- Power adapters for consumer electronics
- LED drivers for lighting applications
- Industrial power supplies
- Home appliances
- Battery chargers
- Auxiliary power supplies for various electronic devices

## Conclusion

The STMicroelectronics VIPER22ADIP-E is a versatile and efficient power supply IC that offers a comprehensive set of features suitable for various applications. Its integrated design, high voltage capability, and built-in protection features make it an excellent choice for designers looking to create reliable and efficient power supply solutions. With its compact size and low standby power consumption, the VIPER22ADIP-E is particularly well-suited for modern electronic devices that require energy efficiency and space-saving designs. This makes it a valuable component in the development of power supplies that meet the demands of today%27s energy-conscious market.

Q1: What is the STMicroelectronics VIPER22ADIP-E?
A1: The STMicroelectronics VIPER22ADIP-E is a high-performance integrated circuit designed for offline power supply applications. It combines a high-voltage power MOSFET with a controller and other features in a single package for efficient power conversion.

Q2: What is the main function of the VIPER22ADIP-E?
A2: The main function of the VIPER22ADIP-E is to convert AC voltage to DC voltage efficiently. It is often used in switch-mode power supplies (SMPS) for a wide range of consumer, industrial, and automotive applications.

Q3: What is the maximum input voltage for the VIPER22ADIP-E?
A3: The VIPER22ADIP-E can handle an input voltage up to 265V, making it suitable for use in a variety of AC-powered applications.

Q4: What type of output does the VIPER22ADIP-E provide?
A4: The VIPER22ADIP-E provides a regulated DC output, typically used in power supply systems where consistent voltage is required for sensitive components.

Q5: What is the output power range of the VIPER22ADIP-E?
A5: The VIPER22ADIP-E can deliver output power in the range of 8W to 20W, depending on the application and design requirements.

Q6: What is the switching frequency of the VIPER22ADIP-E?
A6: The VIPER22ADIP-E operates with a fixed switching frequency of approximately 65 kHz, which ensures efficient operation in power conversion applications.

Q7: Does the VIPER22ADIP-E include protection features?
A7: Yes, the VIPER22ADIP-E includes multiple protection features such as thermal shutdown, overcurrent protection, and overvoltage protection to ensure safe and reliable operation.

Q8: What package type is the VIPER22ADIP-E available in?
A8: The VIPER22ADIP-E is available in a 7-pin DIP package, which is commonly used for ease of integration in through-hole mounting applications.

Q9: What is the efficiency of the VIPER22ADIP-E in power conversion?
A9: The VIPER22ADIP-E provides high efficiency, typically achieving efficiencies of around 80% or higher, depending on the design and input conditions.

Q10: Is the VIPER22ADIP-E suitable for automotive applications?
A10: Yes, the VIPER22ADIP-E is suitable for automotive applications where low power consumption, robust performance, and efficient power conversion are required.

Q11: Does the VIPER22ADIP-E support low standby power consumption?
A11: Yes, the VIPER22ADIP-E features low standby power consumption, making it ideal for applications where minimizing energy loss during idle periods is important.

Q12: What is the operating temperature range of the VIPER22ADIP-E?
A12: The VIPER22ADIP-E operates within a wide temperature range of -40°C to +150°C, making it suitable for use in both consumer and industrial applications that require reliability in harsh environments.

Q13: How does the VIPER22ADIP-E handle input voltage variations?
A13: The VIPER22ADIP-E is designed to handle input voltage variations efficiently, providing a stable output voltage even when the input AC voltage fluctuates.

Q14: What is the start-up time of the VIPER22ADIP-E?
A14: The VIPER22ADIP-E features a fast start-up time, typically around 2 milliseconds, which allows it to quickly initialize and begin regulating power when the input voltage is applied.

Q15: Is the VIPER22ADIP-E compatible with both isolated and non-isolated power supplies?
A15: Yes, the VIPER22ADIP-E is versatile and can be used in both isolated and non-isolated power supply designs, depending on the specific application requirements.

Q16: Does the VIPER22ADIP-E provide regulation of both output voltage and current?
A16: While the VIPER22ADIP-E primarily focuses on output voltage regulation, it also supports current limiting for overcurrent protection, helping to protect the load and the power supply.

Q17: Can the VIPER22ADIP-E be used in high-frequency switching applications?
A17: No, the VIPER22ADIP-E operates at a lower switching frequency of 65 kHz, which is ideal for most standard power supply applications, but not for high-frequency switching applications.

Q18: What is the typical quiescent current of the VIPER22ADIP-E?
A18: The VIPER22ADIP-E has a low quiescent current, typically around 1 mA, which helps minimize overall power consumption during operation.

Q19: Is the VIPER22ADIP-E suitable for use in medical devices?
A19: While the VIPER22ADIP-E is designed for consumer and industrial power supplies, it may be used in medical devices that do not require highly stringent safety standards, as it includes basic protection features.

Q20: How does the VIPER22ADIP-E ensure reliable operation in harsh environments?
A20: The VIPER22ADIP-E includes built-in protection features such as thermal shutdown and overcurrent protection, which ensure reliable operation even in harsh environmental conditions, preventing damage to the circuit in case of faults.