Overview
The VIPER17HN, produced by STMicroelectronics, is a high-performance off-line converter designed for flyback topology applications. It features an 800 V avalanche rugged power section and a PWM control with advanced protection mechanisms. This device is optimized for energy efficiency, low EMI, and robust fault handling, making it suitable for a wide range of power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transistor Breakdown Voltage (V) | 800 | V |
| Drain Current (A) | 0.4 | A |
| RDS(on) (Ω) | 24 | Ω |
| Operating Frequency | 115 kHz | kHz |
| Operating Temperature (°C) | -40 to 150 | °C |
| Standby Power | < 30 mW at 265 VAC | mW |
| Thermal Shutdown Temperature | 150 °C | °C |
| Thermal Shutdown Hysteresis | 30 °C | °C |
Key Features
- 800 V avalanche rugged power section
- PWM operation with frequency jittering for low EMI
- Operating frequency: 115 kHz for H type
- Standby power < 30 mW at 265 VAC
- Limiting current with adjustable set point
- Adjustable and accurate overvoltage protection
- On-board soft-start
- Safe auto-restart after a fault condition
- Hysteresis thermal shutdown
- Brown-out protection
- Two levels of overcurrent protection
Applications
- Adapters for PDA, camcorders, shavers, cellular phones, videogames
- Auxiliary power supply for LCD/PDP TV, monitors, audio systems, computers, industrial systems, LED drivers
- SMPS for set-top boxes, DVD players and recorders, white goods
Q & A
- What is the maximum breakdown voltage of the VIPER17HN?
The maximum breakdown voltage is 800 V.
- What is the typical operating frequency of the VIPER17HN?
The typical operating frequency is 115 kHz.
- What is the standby power consumption of the VIPER17HN at 265 VAC?
The standby power consumption is less than 30 mW.
- Does the VIPER17HN have overvoltage protection?
Yes, it has adjustable and accurate overvoltage protection.
- How does the VIPER17HN handle fault conditions?
The device features safe auto-restart after a fault condition and hysteresis thermal shutdown.
- What is the purpose of the brown-out protection in the VIPER17HN?
The brown-out protection safeguards the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system.
- Can the current limit set point be adjusted in the VIPER17HN?
Yes, the current limit set point can be adjusted using the CONT pin.
- What is the thermal shutdown temperature of the VIPER17HN?
The thermal shutdown temperature is 150 °C.
- Does the VIPER17HN support burst mode operation?
Yes, it supports burst mode operation to meet standby energy saving regulations.
- What types of packages are available for the VIPER17HN?
The device is available in DIP-7 and SO16 narrow packages.
