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VIPER16HDSTN/a2500avaiEnergy Saving VIPer Plus: 6W high voltage converter with direct feedback
VIPER16HDTRSTMN/a2500avaiEnergy Saving VIPer Plus: 6W high voltage converter with direct feedback
VIPER16HDTRSTN/a2500avaiEnergy Saving VIPer Plus: 6W high voltage converter with direct feedback
VIPER16HNSTN/a50avaiEnergy Saving VIPer Plus: 6W high voltage converter with direct feedback
VIPER16LDSTN/a2500avaiEnergy Saving VIPer Plus: 6W high voltage converter with direct feedback
VIPER16LDTRSTN/a7731avaiEnergy Saving VIPer Plus: 6W high voltage converter with direct feedback


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VIPER16HD-VIPER16HDTR-VIPER16HN-VIPER16LD-VIPER16LDTR
Energy Saving VIPer Plus: 6W high voltage converter with direct feedback
June 2014 DocID15232 Rev 7 1/30
VIPER16

Fixed frequency VIPer™ plus family
Datasheet - production data
Figure 1. Typical application
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 No need of auxiliary winding for low power
application Standby power < 30 mW at 230 VAC Limiting current with adjustable set point On-board soft-start Safe auto-restart after a fault condition Hysteretic thermal shutdown
Application
Replacement of capacitive power supply Auxiliary power supply for appliances, Power metering LED drivers
Description

The device is an off-line converter with an 800 V
avalanche ruggedness power section, a PWM
controller, user defined overcurrent limit,
protection against feedback network
disconnection, hysteretic thermal protection, soft
start up and safe auto restart after any fault
condition. It is able to power itself directly from the
rectified mains, eliminating the need for an
auxiliary bias winding. Advance frequency jittering
reduces EMI filter cost. Burst mode operation and
the devices very low consumption both help to
meet the standard set by energy saving
regulations.
Table 1. Device summary
Contents VIPER16
2/30 DocID15232 Rev 7
Contents Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Typical circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 High voltage current generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Soft start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Adjustable current limit set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 FB pin and COMP pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Automatic auto restart after overload or short-circuit . . . . . . . . . . . . . 20 Open loop failure protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
DocID15232 Rev 7 3/30
VIPER16 Contents Layout guidelines and design recommendations . . . . . . . . . . . . . . . . 23 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Block diagram VIPER16
4/30 DocID15232 Rev 7
1 Block diagram
2 Typical power


Figure 2. Block diagram
Table 2. Typical power
Typical continuous power in non ventilated enclosed adapter measured at 50 °C ambient. Maximum practical continuous power in an open frame design at 50 °C ambient, with adequate heat
sinking.
DocID15232 Rev 7 5/30
VIPER16 Pin settings
3 Pin settings
Figure 3. Connection diagram (top view)

Note: The copper area for heat dissipation has to be designed under the DRAIN pins.

Table 3. Pin description
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