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BPS - Non-isolated Buck APFC LED Driver

Numéro de référence BP2327A
Description Non-isolated Buck APFC LED Driver
Fabricant BPS 
Logo BPS 





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BP2327A fiche technique
BP2327A
Non-isolated Buck APFC LED Driver
Description
The BP2327A is a high precision non-isolated buck
APFC LED driver, specially designed for universal
mains with constant current control. The driver with
on-chip PFC circuit achieves high power factor, low
THD and high efficiency.
The BP2327A integrates a 650V power MOSFET,
utilizes patent pending floating ground structure, and
operates in Critical Conduction Mode. The switching
loss is reduced and the inductor is fully utilized. The
inductor current is sensed during the whole switching
cycle and limited cycle by cycle. With few external
components, it achieves high precision output
current, excellent line regulation and load regulation.
The BP2327A offers full of protection functions to
improve the system reliability, including LED load
open circuit protection, LED load short protection,
VCC under voltage protection, Current Sense
resistor open circuit protection, and over
temperature protection. All the protection functions
are auto-recovery. The system reliability is further
improved by the thermal regulation function. The
output current is reduced when the driver is in
condition of over temperature.
Features
Active PFC for High Power Factor and Low THD
Integrated with 650V Power MOSFET
System Efficiency up to 95%
±3% LED Output Current Accuracy
Excellent Line and Load Regulation
Critical Conduction Mode Operation
Ultra Low (33uA) Start Up Current
Ultra Low (300uA) Operating Current
LED Short/Open Protection
Current Sensing Resistor Open Protection
Cycle by Cycle Current Limit
VCC Under Voltage Protection
Auto Fault Recovery
Thermal Regulation Function
Available in SOP-8 Package
Applications
LED retrofit lamps, Bulb, Spot Light, GU10/E27
LED PAR30, PAR38 Lamp
LED tube, LED String
Other LED Lighting
Typical Application
AC
BP2327A
5 DRAIN
FB 4
6 DRAIN
CS 8
3 VCC
1 COMP
CS 7
GND 2
BP2327A_EN _DS_Rev.1.3
Figure 1. Typical application circuit for BP2327A
www.bpsemi.com
Bright Power Semiconductor Co. Confidential Customer Use Only
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