Overview
The VIPER16HN, produced by STMicroelectronics, is an off-line converter designed for high-voltage applications. It features an 800 V avalanche rugged power section, a PWM controller, and various protection mechanisms. The device can power itself directly from the rectified mains, eliminating the need for an auxiliary bias winding. It includes advanced features such as frequency jittering to reduce EMI, burst mode operation for low power consumption, and a soft-start mechanism to prevent transformer saturation during start-up. The VIPER16HN is compliant with energy-saving regulations due to its low standby power consumption of less than 30 mW at 230 VAC.
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 (H type) | kHz |
| Standby Power | < 30 mW at 230 VAC | mW |
| Package | DIP 7, SO-16 | |
| Operating Temperature Range | -40 to 150 °C | °C |
| Thermal Shutdown Temperature | 150 to 160 °C | °C |
Key Features
- 800 V avalanche rugged power section
- PWM operation with frequency jittering for low EMI
- No need for auxiliary winding for low power applications
- Standby power < 30 mW at 230 VAC
- Limiting current with adjustable set point
- On-board soft-start
- Safe auto-restart after a fault condition
- Hysteretic thermal shutdown
- Burst mode operation for low power consumption
Applications
- Replacement of capacitive power supplies
- Auxiliary power supply for appliances
- Power metering
- LED drivers
- Industrial and consumer electronics requiring high-voltage and low power consumption
Q & A
- What is the transistor breakdown voltage of the VIPER16HN?
The transistor breakdown voltage of the VIPER16HN is 800 V.
- What are the operating frequencies for the VIPER16HN?
The operating frequency for the VIPER16HN (H type) is 115 kHz.
- Does the VIPER16HN require an auxiliary bias winding?
No, the VIPER16HN can power itself directly from the rectified mains, eliminating the need for an auxiliary bias winding.
- What is the standby power consumption of the VIPER16HN at 230 VAC?
The standby power consumption is less than 30 mW at 230 VAC.
- What protection mechanisms are included in the VIPER16HN?
The device includes protection against feedback network disconnection, hysteretic thermal protection, and safe auto-restart after any fault condition.
- How does the VIPER16HN reduce EMI?
The VIPER16HN reduces EMI through frequency jittering.
- What is the purpose of the soft-start mechanism in the VIPER16HN?
The soft-start mechanism prevents transformer saturation during start-up and short-circuit conditions.
- Can the current limit set point be adjusted in the VIPER16HN?
Yes, the current limit set point is adjustable.
- What are the typical applications of the VIPER16HN?
Typical applications include replacement of capacitive power supplies, auxiliary power supply for appliances, power metering, and LED drivers.
- What are the available packages for the VIPER16HN?
The VIPER16HN is available in DIP 7 and SO-16 packages.
