UM10412
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© NXP B.V. 2010. All rights reserved.
User manual
Rev. 1 — 2 November 2010
10 of 26
NXP Semiconductors
UM10412
UBA2021 evaluation board
5. Connectors
5.1 Power supply connectors
The board can be supplied by either a high voltage DC or a mains AC input. For most
applications the high voltage DC input should be used. In the final product, a PFC of
choice may be used to replace the high voltage DC supply.
For some applications (such as CFL applications) the rectified mains is sufficient. In these
cases a mains input of 230 V AC may be used.
5.2 Dimming
input
The UBA2021 does not have dimming functionality so this input is not used. If dimming is
required, please use the UBA2014.
5.3 Lamp
connectors
There are four lamp connectors on the board. The connectors are listed in
and
, together with the names of the test points that are connected
to them.
Table 1.
DC high voltage input connector X1
Connector
Signal
Comment
X1-1
+
+ 400 V DC in
X1-2
GND
Ground
Table 2.
AC input connector X3
Connector
Signal
Comment
X3-1
~
Mains 230 V AC
X3-2
~
Mains 230 V AC
Table 3.
Lamp 1 (X56)
TP
Comment
X55
connection for filament 1
X59
connection for filament 1
X62
connection for filament 2
X65
connection for filament 2
Table 4.
Lamp 2 (X42)
TP
Comment
X38
connection for filament 1
X41
connection for filament 1
X46
connection for filament 2
X49
connection for filament 2
