VIPER12A DIP-8 VIPER12 SMPS Primary Switcher
- The large input voltage Range
- Automatic burst mode in low load conditions.
- Overvoltage protection in hiccup mode
- Current mode control
- Auxiliary Undervoltage lockout with hysteresis
- High voltage start-up current source
- Fixed 60 kHz switching frequency
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The VIPER12A combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip. Typical applications cover offline power supplies for battery charger adapters, standby power supplies for TV or monitors, auxiliary supplies for motor control, etc.
The internal control circuit offers the following benefits: Large input voltage range on the VDD pin accommodates changes in auxiliary supply voltage (This feature is well adapted to battery charger adapter configurations), automatic burst mode in low load conditions, and overvoltage protection in HICCUP mode.
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