DocID3572 Rev 4

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AN390

Conclusion

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4

Conclusion

This paper describes an efficient way of implementing an automatic doubler/bridge circuit.

The primary use of this circuit is in 75 W to 500 W SMPS. Other innovative uses are

possible.

The main advantages of the AVS solution are:

•

High efficiency

: Losses are just 2 W vs. 5 to 10 W for discrete schemes.

•

Safety

: Uses digital spike suppression, hysteresis, validation of range, a failsafe mode

and good control.

•

Space optimization

: Small supply resistor and good reliability.

•

Ease of use

: Eliminates errors when the line range has to be selected manually by the

end user.

•

Available solutions

for various power ranges:

–

AVS08 < 200 W

–

AVS10 up to 300 W

–

AVS12 up to 500 W