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'[EE] Synchronous super high efficiency buck-boost'
LTC3780 - for those who want the (near) ultimate in buck boost
Full data sheet (28 page pdf)(may need cut and paste)
At 12v, 5A out, efficiency is > 95% for Vin of 7 volts to 30 volts
and over 90% from 5 volts to 30 volts. 98% at 15V in.
The price is high parts external count - 4 FET switches, and almost 20
Many good features. Uses 4 N channel FETs with internally generated
high side supply, load is disconnected when off.
The 6.8 uF inductor specified in the final circuit in the data sheet
note may be hard to find :-).
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