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Product Detailed Parameters
- Description：IC OFFLINE SWITCH FLYBACK 10DIP
- Series：VIPer™ plus
- Mfr：STMicroelectronics
- Package：Tube
- 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, Short Circuit
- Control Features：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Package / Case：10-SDIP (0.300", 7.62mm)
- Supplier Device Package：10-SDIP
- Mounting Type：Through Hole
- Grade：-
- Qualification：-
- Power (Watts)：20 W
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Overview
The VIPER38HE is a high-voltage AC/DC converter from the VIPerPlus family, integrating an 800 V rugged power MOSFET with PWM current-mode control. It operates at a fixed frequency of 115 kHz and supports flyback topology. Key electrical parameters include a maximum output voltage of 800 V, peak output power of 18 W, and a supply voltage range of 8.5 V to 23.5 V. The device features a maximum duty cycle of 80%, quiescent operating current of 2.5 mA, and functions within a temperature range of -40 °C to +150 °C.
Feature Summary
- Integrates an 800 V avalanche-rugged power MOSFET for ultra-wide input voltage ranges.
- Features adjustable Extra Power Timer (EPT) to sustain overload conditions temporarily.
- Includes dual-level overcurrent protection and thermal shutdown with hysteresis.
- Utilizes jittered frequency operation to reduce electromagnetic interference.
Applications
- General-purpose isolated flyback converters
- Adapters and chargers
- Metering applications
Procurement Notes
Verify the specific suffix 'HE' against official STMicroelectronics documentation to confirm the 115 kHz switching frequency variant. Ensure compatibility with SOIC-Narrow-16 packaging requirements. Confirm RoHS compliance status through the manufacturer's latest datasheet before procurement.
Selection Notes
Select this component for designs requiring high input voltage tolerance and compact form factors. The integrated HV startup and sense FET minimize external component count. Consider the 115 kHz frequency for EMI performance and the burst mode operation for low no-load consumption requirements.
Part Context
This part belongs to the VIPerPlus family of offline converters. It is designed to meet stringent energy-saving standards through low consumption and burst mode operation. The series offers high reliability with automatic restart capabilities after fault conditions are removed.
Replacement Considerations
Consult official substitution lists for variants such as VIPER38LD or VIPER38HD depending on required switching frequency and package type. Verify pinout and thermal characteristics match the target application design.
FAQ
What is the switching frequency of the VIPER38HE?
The VIPER38HE operates at a fixed frequency of 115 kHz.
Does the VIPER38HE support overload conditions?
Yes, it features an adjustable Extra Power Timer (EPT) that allows the IC to sustain overload conditions for a few seconds.
