Overview
The VIPER28HDTR, part of the VIPerPlus family from STMicroelectronics, is a high-voltage converter that integrates an 800 V rugged power MOSFET with PWM current-mode control. This device is designed to meet stringent energy-saving standards with very low consumption and the ability to operate in burst mode under light load conditions. It features an adjustable extra power timer (EPT) to sustain overload conditions for a few seconds and includes high-level protections such as dual-level overcurrent protection (OCP), output overvoltage protection, short-circuit protection, and thermal shutdown with hysteresis. The device automatically restarts after the removal of a fault condition, enhancing system reliability and IC lifetime.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | VIPER28HDTR |
| Package | SO-16 |
| Grade | Industrial |
| RoHS Compliance Grade | Ecopack2 |
| Transistor Breakdown Voltage (V) | 800 (min) |
| Drain Current (A) | 0.8 (nom) |
| RDS(on) (Ω) | 7 (max) |
| Operating Frequency | 60 kHz (L type) or 115 kHz (H type) |
| No-load Consumption at 230 VAC | 30 mW |
| Operating Temperature (°C) | -25 to 125 |
Key Features
- 800 V avalanche-rugged power MOSFET for ultra-wide input voltage range
- Embedded HV startup and sense FET
- PWM current-mode controller
- Dual-level OCP and output overvoltage protection
- Short-circuit and thermal shutdown with hysteresis
- Adjustable extra power timer (EPT) for overload conditions
- Jittered frequency to reduce EMI
- Soft-start to reduce stress during startup
- Automatic restart after fault condition
- Low no-load consumption (30 mW at 230 VAC)
Applications
- Auxiliary power supply for consumer and home equipment
- Power supply for energy meters and data concentrators
- AC-DC adapters
Q & A
- What is the VIPER28HDTR? The VIPER28HDTR is a high-voltage converter from the VIPerPlus family by STMicroelectronics, integrating an 800 V rugged power MOSFET with PWM current-mode control.
- What are the key protections offered by the VIPER28HDTR? The device features dual-level OCP, output overvoltage protection, short-circuit protection, and thermal shutdown with hysteresis.
- What is the operating frequency of the VIPER28HDTR? The device operates at either 60 kHz (L type) or 115 kHz (H type).
- What is the no-load consumption of the VIPER28HDTR at 230 VAC? The no-load consumption is 30 mW.
- Does the VIPER28HDTR support automatic restart after a fault condition? Yes, the device automatically restarts after the removal of a fault condition.
- What is the purpose of the extra power timer (EPT) in the VIPER28HDTR? The EPT allows the device to sustain overload conditions for a few seconds.
- What are the typical applications of the VIPER28HDTR? Typical applications include auxiliary power supplies for consumer and home equipment, power supplies for energy meters and data concentrators, and AC-DC adapters.
- What is the package type of the VIPER28HDTR? The device is packaged in SO-16.
- Is the VIPER28HDTR RoHS compliant? Yes, the VIPER28HDTR is RoHS compliant with an Ecopack2 grade.
- What is the maximum drain current of the VIPER28HDTR? The maximum drain current is 0.8 A (nominal).
