BW6562A Datasheet, PDF (6/15 Pages) Bruckewell Technology LTD – High PFC LED Driver

BW6562A High PFC LED Driver
Functional Block Diagram
Application Information
Operation Overview
The BW6562A is an excellent transition-mode power
factor correction controller for AC-DC switching mode
power supply applications. It meets the IEC61000-3-2
requirement and is intended for the use in those
applications that demand low power harmonics distortion.
It integrates more functions to reduce the external
components counts and the size. Its major features are
described as below.
PF
(7)
(8)
(9)
To consider current harmonics effect, I_RMS is given by
Power Factor Correction and THD
The BW6562A features a one linear multiplier with THD
optimizer for near unity power factor. To explain PFC and
THD relation. First, average power is defined by
V_RMS I_RMS cos(θ)
(1)
(10)
where I_SN is RMS value of n-th input harmonics current.
So, effective value of input distortion current is defined
by
© 2012 Bruckewell Technology Corp., Ltd.
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