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UBA2021 Scheda tecnica(PDF) 11 Page - NXP Semiconductors

Il numero della parte UBA2021
Spiegazioni elettronici  630 V driver IC for CFL and TL lamps
PDF  16 Pages
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

UBA2021 Scheda tecnica(HTML) 11 Page - NXP Semiconductors

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UBA2021_4
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 25 July 2008
11 of 16
NXP Semiconductors
UBA2021
630 V driver IC for CFL and TL lamps
• Where:
• fB = bottom frequency.
• fff = feed-forward frequency.
• fcm = frequency due to capacitive mode detection.
• Preheat time:
• Ignition time:
• Non-overlap time:
12. Application information
t
ph
C
CP
150nF
----------------
R
RREF
30K
Ω
----------------
×
=
t
ign
15
16
------
t
ph
×
=
t
no
1.4
µs
R
RREF
30k
Ω
----------------
×
=
Fig 7.
Application diagram
mgs994
30 k
Ω
490 k
Ω
CCI
CI
RHV
G1
S1
FS
G2
VS
CP
CF
lamp
RREF
SGND
PGND
RS
Cboot
100 nF
100 nF
CS9
CS4
C4
C3
CS7
C2
DS6
DS7
DS4
DS3
DS2
DS1
13
79
14
CCP
C5
100 nF
8
CCF
100 pF
12
RRREF
Rshunt
RRHV
Vin
10
T2
T1
11
2
3
1
6
5
UBA2021
R1
L1
L2
mains
supply



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