Overview
The VIPER16LD, produced by STMicroelectronics, is an off-line converter belonging to the VIPer™ plus family. It features an 800 V avalanche rugged power section, a PWM controller, and various protection mechanisms. This device is capable of powering itself directly from the rectified mains, eliminating the need for an auxiliary bias winding. It is designed to meet energy-saving regulations through its low standby power consumption and burst mode operation. The VIPER16LD is available in a 16-pin SOIC package and is suitable for a variety of applications requiring high reliability and efficiency.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Drain-to-source voltage (VDRAIN) | - | - | 800 | V |
| Operating frequency (FOSC) | 54 | 60 | 66 | kHz (L type) |
| Operating frequency (FOSC) | 103 | 115 | 127 | kHz (H type) |
| Standby power | - | - | < 30 mW | @ 230 VAC |
| Drain-source on-state resistance (RDS(on)) | 20 | 24 | 48 | Ω |
| Operating junction temperature range (TJ) | -40 | - | 150 | °C |
| Storage temperature range (TSTG) | -55 | - | 150 | °C |
| Thermal shutdown temperature (TSD) | 150 | - | 160 | °C |
| Thermal shutdown hysteresis (THYST) | - | - | 30 | °C |
Key Features
- 800 V Avalanche Rugged Power Section: Ensures high voltage handling capability.
- PWM Operation with Frequency Jittering: Reduces EMI and filter costs.
- Operating Frequencies: 60 kHz for L type and 115 kHz for H type.
- No Auxiliary Winding Needed: For low power applications, it can power itself from the rectified mains.
- Low Standby Power: Less than 30 mW at 230 VAC.
- Adjustable Current Limit: User-defined overcurrent limit.
- On-Board Soft-Start: Reduces stress on the secondary diode during start-up.
- Safe Auto-Restart: After any fault condition.
- Hysteretic Thermal Shutdown: Protects against overheating.
Applications
- Replacement of Capacitive Power Supply
- Auxiliary Power Supply for Appliances
- Power Metering
- LED Drivers
Q & A
- What is the maximum drain-to-source voltage of the VIPER16LD?
The maximum drain-to-source voltage is 800 V.
- What are the operating frequencies for the L and H types of VIPER16LD?
The operating frequencies are 60 kHz for the L type and 115 kHz for the H type.
- Does the VIPER16LD require an auxiliary bias winding for low power applications?
No, it can power itself directly from the rectified mains.
- What is the typical standby power consumption of the VIPER16LD at 230 VAC?
The standby power consumption is less than 30 mW.
- How does the VIPER16LD reduce EMI?
It uses PWM operation with frequency jittering to reduce EMI.
- What is the purpose of the soft-start feature in the VIPER16LD?
The soft-start feature progressively increases the cycle-by-cycle drain current limit to reduce stress on the secondary diode during start-up.
- How does the VIPER16LD protect against overheating?
It features hysteretic thermal shutdown to protect against overheating.
- What is the operating junction temperature range of the VIPER16LD?
The operating junction temperature range is -40°C to 150°C.
- What is the storage temperature range for the VIPER16LD?
The storage temperature range is -55°C to 150°C.
- Does the VIPER16LD have an adjustable current limit feature?
