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Product Detailed Parameters
- Description：IC OFFLINE SWITCH FLYBACK 16SO
- Series：VIPer™ plus
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Isolation：Either
- Internal Switch(s)：Yes
- Voltage - Breakdown：800V
- Topology：Flyback
- Voltage - Start Up：13 V
- Voltage - Supply (Vcc/Vdd)：11.5V ~ 23.5V
- Duty Cycle：70%
- Frequency - Switching：115kHz
- Fault Protection：Current Limiting, Over Temperature
- Control Features：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SO
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：20 W
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Overview
The VIPER26HDTR is an offline switch from the VIPerPlus family, designed for flyback converter topologies. It integrates a high-voltage power MOSFET with a fixed-frequency PWM controller operating at 115 kHz. The device features an 800 V avalanche-rugged breakdown voltage and supports a supply voltage range of 11.5 V to 23.5 V. Key electrical parameters include a maximum duty cycle of 70%, a startup voltage of 13 V, and a typical operating supply current of 3.5 mA. It provides current limiting with an adjustable set point and hysteretic thermal shutdown protection.
Feature Summary
- Integrates an 800 V avalanche-rugged power section with a PWM controller for robust operation in offline applications.
- Features frequency jittering to reduce electromagnetic interference (EMI) filter costs.
- Includes on-board soft-start and safe auto-restart capabilities following fault conditions.
Applications
- Smart meter and power line communication systems
- General-purpose isolated flyback converters
- Low standby power AC-DC adapters
Procurement Notes
Verify the specific suffix 'H' confirms the 115 kHz switching frequency variant when sourcing replacements. Confirm package integrity for the SO-16 narrow form factor upon receipt. Ensure storage conditions comply with moisture sensitivity levels prior to soldering. Cross-reference datasheet revisions to confirm pinout consistency with existing designs.
Selection Notes
Select this component for designs requiring a fixed 115 kHz switching frequency rather than the 60 kHz L-type variant. It is suitable for applications needing integrated high-voltage ruggedness without external snubber complexity. Consider the 16-SO package constraints for thermal management in compact enclosures.
Part Context
This part belongs to the VIPerPlus series of high-voltage off-line converters by STMicroelectronics. It combines a power MOSFET and control circuitry into a single monolithic IC. The H-suffix specifically denotes the 115 kHz operating frequency, distinguishing it from other members of the VIPER26 family.
Replacement Considerations
The VIPER26HD is a parameter-equivalent alternative available in tube packaging. Verify that the 115 kHz frequency and 800 V rating match the original design requirements before substitution.
