Overview
The VIPER319HDTR, produced by STMicroelectronics, is a high-voltage converter that integrates an 800 V avalanche-rugged power MOSFET with PWM current-mode control. This device is designed to meet stringent energy-saving standards with very low consumption and operates in pulse frequency modulation at light load. It supports various topologies such as flyback, buck, and buck-boost, making it versatile for a range of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transistor Breakdown Voltage | 800 | V |
| Drain Current (nominal) | 0.85 | A |
| RDS(on) (maximum) | 3.5 | Ω |
| Operating Temperature Range | -40 to 150 | °C |
| Supply Voltage Range | 4.5 to 30 | V |
| Switching Frequency | 30 kHz ± 7% (type X), 60 kHz ± 7% (type L), 132 kHz ± 7% (type H) | kHz |
| Drain Current Limit Protection (OCP) | 990 mA | mA |
| Package | SO-16 |
Key Features
- 800 V avalanche-rugged power MOSFET to cover ultra-wide VAC input range
- Embedded HV startup and sense FET
- Current mode PWM controller
- Drain current limit protection (OCP): 990 mA for VIPER319
- Wide supply voltage range: 4.5 V to 30 V
- Jittered switching frequency reduces EMI filter cost
- Embedded error amplifier with 1.2 V reference
- Built-in soft-start for improved system reliability
- Protections with automatic restart: overload/short-circuit, thermal shutdown, overvoltage
- Protections without automatic restart: pulse-skip protection, undervoltage/disable, max. duty cycle
Applications
The VIPER319HDTR is suitable for various industrial and consumer applications, including:
- AC-DC power supplies
- Flyback, buck, and buck-boost converters
- LED lighting systems
- Home appliances and white goods
- Industrial power supplies and control systems
Q & A
- What is the breakdown voltage of the VIPER319HDTR?
The breakdown voltage is 800 V.
- What are the supported topologies for the VIPER319HDTR?
The device supports flyback, buck, and buck-boost topologies.
- What is the operating temperature range of the VIPER319HDTR?
The operating temperature range is -40 to 150°C.
- What is the supply voltage range for the VIPER319HDTR?
The supply voltage range is 4.5 V to 30 V.
- What are the protections available in the VIPER319HDTR?
The device includes protections such as overload/short-circuit, thermal shutdown, overvoltage, pulse-skip protection, undervoltage/disable, and max. duty cycle.
- What is the typical switching frequency of the VIPER319HDTR?
The typical switching frequencies are 30 kHz ± 7% (type X), 60 kHz ± 7% (type L), and 132 kHz ± 7% (type H).
- Does the VIPER319HDTR have built-in soft-start?
Yes, it has built-in soft-start for improved system reliability.
- What is the package type of the VIPER319HDTR?
The package type is SO-16.
- Is the VIPER319HDTR RoHS compliant?
Yes, it is RoHS compliant with an Ecopack3 grade.
- What is the drain current limit protection for the VIPER319HDTR?
The drain current limit protection is 990 mA.
