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| UM10879 Datasheet, PDF (12/43 Pages) NXP Semiconductors – SSL8516BDB1317 75 W 48 V/1.6 A CVCC LED driver | |||
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NXP Semiconductors
UM10879
SSL8516BDB1317 75 W 48 V/1.6 A CVCC LED driver
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Fig 8. ton(PFC) modulation with capacitor C15
DDD
At low load, fsw(PFC) increases and the frequency limit of the PFC controller is reached. At
the mains angle where fsw(PFC)max is reached, the valley skipping is active. A discrete step
in the mains current is present. The valley hopping and the flat line during the Vmains zero
crossings determine the THD and class C performance.
Fig 9.
Upper grid: C1 = VPFCDRIVER; C2 = lmains; C4 = Vbus
PFC signals 230 V; Vo = 16 V; Io = 1.6 A
UM10879
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 â 26 May 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
12 of 43
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