VIPER37 VIPerPlus family is a fixed frequency offline converter with the following features: 800 V avalanche rugged power section, PWM operation with adjustable limiting current, 30 mW standby power at 265 Vac, operating frequency of 60 kHz for L type and 115 kHz for H type, frequency jittering for low EMC, output overvoltage protection, high primary current protection (2nd OCP), input undervoltage setting (brownout), onboard soft-start, safe auto-restart after a fault condition, and hysteretic thermal shutdown. Applications include SMPS for set-top boxes, DVD players and recorders, white goods, consumer and home equipment auxiliary power supply, ATX auxiliary power supply, and low/medium power AC-DC adapters.
The VIPER37 is a fixed frequency offline converter belonging to the viPerPlus family. It features an 800 V avalanche rugged power section and operates in PWM mode with an adjustable limiting current. The device supports operating frequencies of 60 kHz for L type and 115 kHz for H type, utilizing frequency jittering for low EMC.
| Drain-to-source voltage | 800 V |
|---|---|
| Repetitive avalanche current | 15 A |
| Pulse drain current | 3 A |
| Operating frequency (L type) | 60 kHz |
| Operating frequency (H type) | 115 kHz |
| Operating junction temperature range | -40 to 150 °C |
| Power dissipation (Ta < 60 °C) | 1.5 W |
The device operates at 60 kHz for L type and 115 kHz for H type.
The maximum drain-to-source voltage is 800 V.