Key facts
- Brand
- STMicroelectronics
- Model
- VIPER28
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics VIPER28 Off-line High Voltage Converters Datasheet
The VIPER28 is an off-line converter IC designed for auxiliary power supplies in consumer and home equipment, including ATX auxiliary power supplies and low to medium power AC-DC adapters. The device features an 800 V avalanche rugged power section and operates in PWM mode with frequency jittering to reduce EMI. It includes multiple protection mechanisms such as adjustable current limiting, over-voltage protection, hysteretic thermal shutdown, and safe auto-restart after fault conditions.
Read onlineSTMicroelectronics VIPER28 specifications
| Drain-to-source voltage | 800 V |
|---|---|
| Operating frequency (L type) | 60 kHz |
| Operating frequency (H type) | 115 kHz |
| Standby power | < 50 mW |
| Operating junction temperature | -40 to 150 °C |
| Maximum duty cycle | 70-80 % |
Source: STMicroelectronics VIPER28 Off-line High Voltage Converters Datasheet
All STMicroelectronics VIPER28 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum drain-to-source voltage rating?
The maximum drain-to-source voltage rating is 800 V.
From: STMicroelectronics VIPER28 Off-line High Voltage Converters Datasheet
What are the operating frequencies for the L and H types?
The operating frequency is 60 kHz for L type and 115 kHz for H type.
From: STMicroelectronics VIPER28 Off-line High Voltage Converters Datasheet
What is the standby power consumption of the VIPER28?
The standby power is less than 50 mW when operating at 265 Vac.
What are the operating frequencies for the L and H type versions?
The L type operates at 60 kHz and the H type at 115 kHz.