Overview
The VIPER50A, developed by STMicroelectronics, is a high-performance AC-to-DC switching converter. This device combines a state-of-the-art PWM circuit with an optimized, high-voltage Vertical Power MOSFET (700V/1.5A) on the same silicon chip, utilizing VIPower M0 Technology. It is designed for offline power supplies, offering a secondary power capability of 25W in wide range conditions and 50W in single range or with doubler configuration. The VIPER50A is compatible with both primary and secondary regulation loops and reduces component count by approximately 50% compared to discrete solutions. It also features burst mode operation for stand-by mode without additional components.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Mounting Style | Through Hole | Output Voltage | 700 V |
| Input / Supply Voltage - Min | 0 V | Input / Supply Voltage - Max | 15 V |
| Switching Frequency | 200 kHz | Duty Cycle - Max | 12 % |
| Operating Supply Current | 16 mA | Minimum Operating Temperature | -25 C |
| Maximum Operating Temperature | +125 C | Output Current | 1.5 A |
| Series | VIPER50A | Brand | STMicroelectronics |
| Number of Outputs | 1 Output | Factory Pack Quantity | 50 |
Key Features
- Adjustable current limitation
- Low stand-by current
- Integrated start-up supply
- Undervoltage lock-out with hysteresis
- Adjustable switching frequency up to 200 kHz
- Soft start and shutdown control
- Current mode control
- Internally trimmed Zener reference
- Over-temperature protection
- Automatic burst mode operation in stand-by condition, meeting the 'Blue Angel' norm (<1W total power consumption)
- High voltage startup (HV Start-up) with low standby power consumption
- Integrated 800V avalanche-rugged power MOSFET
- Peak current mode control with adjustable current sense threshold
- Auto-restart and self-supply functions
- Various protection features, such as overload protection, overvoltage protection, and thermal shutdown
Applications
- AC-DC adapters and chargers
- LED lighting drivers
- Audio systems
- Small home appliances
- Motor control systems
- Power supplies for white goods
- Industrial automation and robotics
- Telecommunications equipment
Q & A
- Q: What is the VIPER50A and its primary function?
A: The VIPER50A is a high-performance AC-to-DC switching converter designed by STMicroelectronics, combining a PWM circuit and a high-voltage Vertical Power MOSFET on the same silicon chip.
- Q: What are the typical applications of the VIPER50A?
A: Typical applications include offline power supplies, AC-DC adapters, LED lighting drivers, audio systems, small home appliances, and motor control systems.
- Q: What is the maximum operating temperature of the VIPER50A?
A: The maximum operating temperature is +125°C.
- Q: Does the VIPER50A support burst mode operation?
A: Yes, the VIPER50A features automatic burst mode operation in stand-by condition, meeting the 'Blue Angel' norm (<1W total power consumption).
- Q: What is the switching frequency range of the VIPER50A?
A: The switching frequency range is up to 200 kHz, with an adjustable frequency feature.
- Q: What kind of protection features does the VIPER50A have?
A: The VIPER50A includes various protection features such as undervoltage lock-out with hysteresis, over-temperature protection, overload protection, and overvoltage protection.
- Q: What is the package type of the VIPER50A?
A: The VIPER50A comes in a Pentawatt-5 HV package with bent and staggered leads for high-voltage applications.
- Q: How does the VIPER50A reduce component count?
A: The VIPER50A reduces component count by approximately 50% compared to discrete solutions by integrating multiple functions on the same silicon chip.
- Q: What is the warranty period for the VIPER50A?
A: The warranty period is typically 1 year, covering any defects in materials and workmanship under normal use.
- Q: How can I ensure the authenticity of the VIPER50A from STMicroelectronics?
A: Ensure you purchase from authorized distributors or suppliers that rigorously test and verify the credentials of original STMicroelectronics manufacturers and authorized agents.
