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MPQ4560DN Datasheet(PDF) 16 Page - Monolithic Power Systems

Part # MPQ4560DN
Description  Industrial-Grade, 2A, 2MHz, 55V Step-Down Converter Available in AEC-Q100
PDF  21 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MPQ4560DN Datasheet(HTML) 16 Page - Monolithic Power Systems

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MPQ4560
– 2A, 2MHz, 55V STEP-DOWN CONVERTER
MPQ4560 Rev. 1.1
www.MonolithicPower.com
16
3/29/2013
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
 for high duty-cycle operation (when V
OUT/VIN >
65%).
The bootstrap diode can be a low cost one such
as IN4148 or BAT54.
Figure 2: External Bootstrap Diode
At no-load or light-load, the converter may
operate in pulse-skipping mode in order to
maintain output-voltage regulation. Thus there is
less time to refresh the BS voltage. For sufficient
gate voltage during pulse-skipping, VIN–VOUT>3V.
For example, if the VOUT=3.3V, VIN must be
exceed 3.3V+3V=6.3V to maintain sufficient BST
voltage at no-load or light-load. To meet this
requirement, the EN pin can program the input
UVLO voltage to VOUT+3V.



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