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MIC4609 bảng dữ liệu(PDF) 17 Page - Microchip Technology

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Giải thích chi tiết về linh kiện  600V 3-Phase MOSFET/IGBT Driver
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MIC4609 bảng dữ liệu(HTML) 17 Page - Microchip Technology

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 2016 Microchip Technology Inc.
DS20005531A-page 17
MIC4609
4.3
Enable Inputs
There is one external Enable pin that controls all three
phases. A logic high on the enable pin (EN) allows for
startup of all phases and normal operation. Conversely,
when a logic low is applied on the Enable pin, all
phases turn off and the device enters a low current
Shutdown mode. All outputs (xHO and xLO) are pulled
low when EN is low. The EN pin is internally pulled
down. Leaving the pin open disables the part.
TABLE 4-1:
OPERATIONAL TRUTH TABLE
ULVO (1, 2)
Outputs (3, 4)
Condition
xHI
xLI
EN
HB ULVO
VDD ULVO
xHO
xLO
Disabled
X
X
L
X
X
L
L
VDD ULVO
X
X
X
X
L
L
L
VHB ULVO
X
L or H
H
L
H
L
L or H
Switching
HH
H
H
L
L
HH
H
L
L
LH
H
H
H
L
H
H
L
HH
HH
L
LL
H
H
H
L
L
Note 1:
UVLO = H when VDD > UVLO threshold
2:
UVLO = L when VDD < UVLO threshold
3:
xHO and xLO remain low if both xHI and xLI are low when the VDD rises above the UVLO threshold or
when the EN pin is asserted high. Normal switching operation begins when one of the inputs changes
state from L to H.
4:
Anti-shoot-through circuit prevents a high on both outputs simultaneously.



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