RS2332
High-Voltage Start-Up Primary Side LED
Controller with Active PFC
DESCRIPTION
FEATURES
The RS2332 integrates 600V ultra high voltage startup
circuit reduces the total power consumption to provide
a high efficiency solution for lighting applications and it
is a single-power stage, isolated, primary-side-control
offline LED lighting controller that achieves high power
factor in a single SOP-8 package. The proprietary
real-current control method can control the LED
current accurately from the primary side information. It
can significantly simplify the LED lighting system
design by eliminating the secondary side feedback
components and the opto-coupler.
Very less components
Build-in 600V start-up circuit
Real current control without secondary feedback
Accurate constant current output
Active power factor correction (>0.9)
Quasi resonance mode for high efficiency
Under voltage lockout (UVLO)
Programmable input AC voltage compensation
Leading edge blanking on CS/ZCD pin
Available in an SOP-8 package
Protection features
- Building in hysteresis OTP
- VCC over voltage protection
- Clamped Gate output voltage to maximal 18V
- Cycle by cycle current limiting on CS
- Secondary peak current protection on CS pin
- Output short to GND protection
- Output programmable over voltage protection
The RS2332 integrates active power factor correction
and works in quasi resonance mode in order to reduce
the MOSFET switching losses. The multi-protection
features of RS2332 greatly enhance the system
reliability and safety. The RS2332 features over
voltage
protection,
short
circuit
protection,
cycle-by-cycle current limit, VCC UVLO and
auto-restart over-temperature protection. The driver
output voltage is clamped at maximal 18V to protect
the external power MOSFET.
APPLICATIONS
Low Power AC/DC offline SMPS for:
- Solid state lighting
- Industrial and commercial lighting
BLOCK DIAGRAM
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan