UM10525
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1 — 19 April 2012
9 of 21
NXP Semiconductors
UM10525
120 V 20 W CFL demo board using the UBA2212
(1) I
lamp
signal.
(2) SW signal timing for preheat.
(3) CB signal timing for boost and transition.
(4) Half-bridge voltage.
Fig 6.
Time sequence for a boost lamp with a zoom function applied to the preheat state
(1) I
lamp
signal.
(2) SW signal timing for preheat.
(3) CB signal timing for boost and transition
(4) Half-bridge voltage.
Fig 7.
Time sequence for a boost lamp with a zoom function applied to the preheat to
RMS transition