Overview
The VIPER267KDTR from STMicroelectronics is a high voltage converter that integrates a 1050 V avalanche-rugged power section with a PWM current mode control. This device is designed to meet stringent energy-saving standards, featuring very low consumption and operation in burst mode under light load conditions. It includes an embedded HV startup, sense-FET, error amplifier, and oscillator with jitter, allowing for a complete application design with a minimal number of components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transistor Breakdown Voltage (V) | 1050 | V |
| Drain Current (A) | 0.7 | A |
| RDS(on) (Ω) | 7 | Ω |
| Switching Frequency | 60 kHz ± 4 kHz | Hz |
| Standby Power at 230 VAC | < 30 mW | mW |
| Operating Junction Temperature Range | -40 to 150 | °C |
| Package | SO-16 | |
| RoHS Compliance Grade | Ecopack2 |
Key Features
- 1050 V avalanche-rugged power MOSFET allowing ultra-wide VAC input range
- Embedded HV startup and sense-FET
- Current mode PWM controller
- Drain current limit protection: 700 mA (VIPER267K)
- Jittered switching frequency reduces EMI filter cost: 60 kHz ± 4 kHz
- Standby power < 30 mW at 230 VAC
- Embedded error amplifier with 3.3 V reference
- Safe auto-restart after a fault condition
- Hysteretic thermal shutdown
- Built-in soft-start for improved system reliability
Applications
- SMPS for energy metering
- Auxiliary power supplies for 3-phase input industrial systems
- LED lighting
- Air conditioning
- Isolated flyback with optocoupler, primary-side regulation, non-isolated flyback with resistive feedback, buck, and buck boost topologies
Q & A
- What is the breakdown voltage of the VIPER267KDTR?
The breakdown voltage is 1050 V. - What is the typical drain current limit for the VIPER267KDTR?
The typical drain current limit is 700 mA. - What is the switching frequency of the VIPER267KDTR?
The switching frequency is 60 kHz ± 4 kHz. - What is the standby power consumption at 230 VAC?
The standby power consumption is less than 30 mW. - What are the supported SMPS topologies by the VIPER267KDTR?
The device supports isolated flyback with optocoupler, primary-side regulation, non-isolated flyback with resistive feedback, buck, and buck boost topologies. - Does the VIPER267KDTR have built-in thermal protection?
Yes, it has hysteretic thermal shutdown. - How does the soft-start function work in the VIPER267KDTR?
The soft-start function progressively increases the cycle-by-cycle drain current limit during startup, reducing stress on the secondary diode and preventing transformer saturation. - What is the operating junction temperature range of the VIPER267KDTR?
The operating junction temperature range is -40 to 150 °C. - Is the VIPER267KDTR RoHS compliant?
Yes, it is RoHS compliant with an Ecopack2 grade. - What package type is the VIPER267KDTR available in?
The device is available in an SO-16 package.
