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MIC2103 데이터시트(PDF) 25 Page - Microchip Technology

부품명 MIC2103
상세설명  75V Synchronous Buck Controllers Featuring Adaptive ON-Time Control
PDF  42 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MIC2103 데이터시트(HTML) 25 Page - Microchip Technology

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DS20005899A-page 25
MIC2103/4
the gate voltage with minimal droop for the power
stroke (high-side switching) cycle, i.e., ∆BST = 10 mA
x 3.33 μs/0.1 μF = 333 mV. When the low-side
MOSFET is turned back on, CBST is recharged through
D1. A small resistor RG, which is in series with CBST,
can be used to slow down the turn-on time of the
high-side N-channel MOSFET.
The drive voltage is derived from the VDD supply
voltage. The nominal low-side gate drive voltage is VDD
and the nominal high-side gate drive voltage is
approximately VDD – VDIODE, where VDIODE is the
voltage drop across D1. An approximate 30 ns delay
between the high-side and low-side driver transitions is
used to prevent current from simultaneously flowing
unimpeded through both MOSFETs.



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