UBA2015A datasheet(10/42 Pages) PHILIPS

Part #	UBA2015A

Description	600 V fluorescent lamp driver with PFC, linear dimming and boost function

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Manufacturer	PHILIPS [NXP Semiconductors]

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UBA2016A_15_15A

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Product data sheet

Rev. 3 — 16 November 2011

10 of 42

NXP Semiconductors

UBA2016A/15/15A

600 V fluorescent lamp driver

7.4 Fluorescent lamp control

The IC incorporates all the regulation and control needed for the fluorescent lamp(s), such

as filament preheat, ignition frequency sweep, lamp voltage limitation, lamp current

control, start-up boost, dimming, end-of-life detection, overcurrent protection and hard

switching limiting.

In the UBA2016A/15/15A, 7 different operating states can be distinguished. In each state

the IC acts in a specific way, as described in the next paragraphs. Figure 9 shows the

possible transitions between the states with their conditions.

Fig 8.

Oscillator, driver and half-bridge voltages

tno

time

0

VCF

time

VGHHB

VSHHB

VSHHB + VVDD

VVDD

VBUS

time

0

VGLHB

time

0

VSHHB

001aam537

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