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MCP16311/2 Fiches technique(PDF) 22 Page - Microchip Technology

No de pièce MCP16311/2
Description  30V Input, 1A Output, High-Efficiency, Integrated Synchronous Switch Step-Down Regulator
PDF  40 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP16311/2 Fiches technique(HTML) 22 Page - Microchip Technology

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MCP16311/2
DS20005255C-page 22
 2013-2019 Microchip Technology Inc.
The difference between the first term, input power, and
the second term, power delivered, is the total system
power dissipation. The inductor losses are estimated
by PL =IOUT2 xLDCR.
EXAMPLE 5-6:
POWER DISSIPATION –
MCP16311/2 MSOP
PACKAGE
EXAMPLE 5-7:
POWER DISSIPATION –
MCP16311/2 DFN
PACKAGE
VIN =12V
VOUT =5.0V
IOUT =0.8A
Efficiency = 92.5%
Total System Dissipation = 324 mW
LDCR =0.15 
PL =96 mW
MCP16311/2 internal power dissipation estimate:
PDIS –PL =228 mW
JA =211°C/W
Estimated Junction
Temperature Rise
= +48.1°C
VIN =12V
VOUT =3.3V
IOUT =0.8A
Efficiency = 90%
Total System Dissipation = 293 mW
LDCR =0.15 
PL =96 mW
MCP16311 internal power dissipation estimate:
PDIS –PL =197 mW
JA =68°C/W
Estimated Junction
Temperature Rise
= +13.4°C



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