UM10525
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1 — 19 April 2012
17 of 21
NXP Semiconductors
UM10525
120 V 20 W CFL demo board using the UBA2212
7. PCB
layout
Figure 14
shows the layout of the PCB.
8. Alternative CFL examples
Some other lamps were measured in the lab, including 8 W, 12 W, 15 W, 20 W. Two boost
lamps using UBA2212BT are listed
Table 4
with their LC tank, start up-to-burn scope
picture and related electrical parameters.
16
L2
PC40-EE16; 1.5 mH; 1 A; N = 180:6:6;
diameter 0.23 mm
1
18
U1
UBA2212CT; SO14
1
19
Burner
burner; T3 Spiral 20 W
1
Table 3.
Bill of materials
…continued
Number Reference
Typical value
Quantity
Fig 14. PCB layout
Table 4.
Electrical parameters 12 W boost lamp (UBA2212BT N1B)
Boost ratio = 1.54.; C
BUF
= 22
F, 250 V; L2 = 1.7 mH, 2
; C5 (res) = 6 nF, 1 kV;
C6 and C7 = 100 nF, 100 V; C8 (DC) = 10 nF, 400 V; R
CSI
= 2.2
, 1 W
State
V
IN
(V)
P
in
(W)
PF
V
lamp
(V)
I
Iamp
(mA)
I
hb
(mA)
P
lamp
(W)
f
osc
(kHz)
t
ph
(s)
Normal
120
11.3
0.59
75
127
248
9.5
48.3
0.8
Boost
-
16.1
-
67
196
338
13.1
40.34
-
