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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：Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：800V
- Topology：Flyback
- Voltage - Start Up：14 V
- Voltage - Supply (Vcc/Vdd)：8.5V ~ 23.5V
- Duty Cycle：80%
- Frequency - Switching：115kHz
- Fault Protection：Current Limiting, Over Temperature, Over Voltage
- 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 VIPER27HDTR is an AC/DC converter from the VIPerPlus family, designed as a fixed frequency high-performance offline high voltage converter. It utilizes a Flyback topology with Silicon technology and operates at a switching frequency of 115 kHz. The device supports a maximum output power of 18 W and features an output voltage rating of 800 V. It accommodates an input supply voltage range between 8.5 V and 23.5 V, with a maximum duty cycle of 80%. The component draws a working supply current of 3.5 mA and functions within a temperature range of -40°C to +150°C. It is housed in an SOIC-Narrow-16 package.
Feature Summary
- Integrates an 800 V avalanche rugged power section for reliable offline operation.
- Includes PWM control with two levels of over-current protection and hysteretic thermal shutdown.
- Features safe auto-restart capability after fault condition removal and on-board soft-start.
- Supports burst mode operation to meet standby energy saving regulations.
Applications
- Offline high voltage converter designs
- Standby power supplies requiring low consumption
- Systems needing EMI filter cost reduction via frequency jittering
Procurement Notes
Verify the specific suffix 'HD' against the manufacturer's official datasheet to confirm the 115 kHz operating frequency variant. Ensure the SOIC-Narrow-16 package matches the target PCB footprint. Confirm RoHS compliance status through the latest product documentation before finalizing procurement orders.
Selection Notes
Select this component for applications requiring a fixed frequency flyback converter with high voltage ruggedness. Consider the 115 kHz switching rate for EMI management and the 18 W power capability. Evaluate the wide operating temperature range and integrated protection features for robust system design.
Part Context
This part belongs to the VIPerPlus series of AC/DC converters manufactured by STMicroelectronics. It represents a monolithic solution combining high-voltage MOSFET switching with intelligent control circuitry. The series is engineered for compact, efficient power supply implementations in consumer and industrial electronics.
Replacement Considerations
Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the 115 kHz frequency and SOIC-Narrow-16 package constraints.
