VIPER265KDTR

Overview

The VIPER265KDTR is a high-voltage converter from the VIPerPlus family, integrating a 1050 V avalanche-rugged power MOSFET with PWM current-mode control. It operates at a fixed switching frequency of 60 kHz with jittering to reduce EMI. The device features an embedded high-voltage startup circuit, sense-FET, and error amplifier with a 3.3 V reference. Key protection mechanisms include drain current limiting set at 500 mA, hysteretic thermal shutdown, built-in soft-start, and safe auto-restart after fault conditions such as overload or short-circuit.

Feature Summary

• Integrates a 1050 V avalanche-rugged power MOSFET for extended input voltage range coverage
• Supports multiple SMPS topologies including isolated flyback, primary-side regulation, buck, and buck-boost
• Features embedded high-voltage startup and sense-FET for minimal external component count
• Includes comprehensive protection with safe auto-restart and hysteretic thermal shutdown

Applications

• Ultra-wide range auxiliary power supplies
• Smart meter and powerline communication system power systems
• Low standby power AC-DC converters

Procurement Notes

Verify the specific suffix 'KDTR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 1050 V rating aligns with the target application's input voltage stress requirements. Ensure compatibility with the SO-16 package footprint during PCB layout verification.

Selection Notes

Select this component when an ultra-wide AC/DC input range is required without additional input voltage limiters. The integrated 1050 V MOSFET simplifies design by reducing snubber circuit size. It is suitable for applications demanding low standby power consumption and compliance with strict EMC standards through frequency jittering.

Part Context

This part belongs to the VIPerPlus family of high-voltage converters. Unlike the standard VIPER26 series which integrates an 800 V MOSFET, the VIPER26K series specifically incorporates a 1050 V power section. This distinction allows for direct connection to wider mains ranges in compact designs.

Replacement Considerations

The VIPER267KDTR serves as a functional substitute within the same family, offering identical topology support but with a higher drain current limit of 700 mA compared to the 500 mA limit of the VIPER265KDTR.