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VIPER17 Datasheet(PDF) 1 Page - STMicroelectronics |
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VIPER17 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 31 page  February 2008 Rev 2 1/31 31 VIPER17 Off-line high voltage converters Features ■ 800 V avalanche rugged power section ■ PWM operation with frequency jittering for low EMI ■ Operating frequency: – 60 kHz for L type – 115 kHz for H type ■ Standby power < 50 mW at 265 Vac ■ Limiting current with adjustable set point ■ Adjustable and accurate over voltage protection ■ On-board soft-start ■ Safe auto-restart after a fault condition ■ Hysteretic thermal shutdown Application ■ Adapters for PDA, camcorders, shavers, cellular phones, videogames ■ Auxiliary power supply for LCD/PDP TV, monitors, Audio systems, computer, industrial ■ SMPS for set-top boxes, DVD players and recorders, white goods. Description The device is an off-line converter with an 800 V rugged power section, a PWM control, two levels of over current protection, over voltage and overload protections, hysteretic thermal protection, soft-start and safe auto-restart after any fault condition removal. Burst mode operation and device very low consumption helps to meet the standby energy saving regulations. Advance frequency jittering reduces EMI filter cost. Brown-out function is embedded into the high voltage start-up. Figure 1. Typical topology DIP-7 DIP-7 Table 1. Device summary Order codes Package Packaging VIPER17LN DIP-7 Tube VIPER17HN www.st.com |
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