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ZXLD1370EST16TC датащи(PDF) 23 Page - Diodes Incorporated

номер детали ZXLD1370EST16TC
подробное описание детали  60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER WITH AEC-Q100
PDF  36 Pages
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производитель  DIODES [Diodes Incorporated]
домашняя страница  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZXLD1370EST16TC датащи(HTML) 23 Page - Diodes Incorporated

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ZXLD1370
ZXLD1370
Document number: DS32165 Rev. 4 - 2
23 of 36
www.diodes.com
March 2011
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Applications Information (Continued)
INPUT CAPACITOR
The input capacitor can be calculated knowing the input voltage ripple
ΔV
IN-PP as follows:
Buck
PP
IN
V
x
SW
f
LED
I
x
)
D
1
(
x
D
IN
C
−
Δ
−
=
Use D = 0.5 as worst case
Boost
PP
IN
V
x
SW
f
x
8
PP
L
I
IN
C
−
Δ
−
Δ
=
Buck-boost
PP
IN
V
x
SW
f
LED
I
x
D
IN
C
−
Δ
=
Use D = DMAX as worst case
The minimum RMS current for the output capacitor is calculated as follows:
Buck
)
D
1
(
Dx
x
LED
I
RMS
CIN
I
−
=
−
use D=0.5 as worst case
Boost
12
PP
L
I
RMS
CIN
I
−
=
−
Buck-boost
)
D
1
(
D
x
LED
I
RMS
CIN
I
−
=
−
Use D=DMAX as worst case



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