RS2332 [PTC]
High-Voltage Start-Up Primary Side LED Controller with Active PFC;
| 型号： | RS2332 |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | High-Voltage Start-Up Primary Side LED Controller with Active PFC 功率因数校正 |
| 文件： | 总4页 (文件大小：264K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
RS2332
APPLICATION CIRCUIT
ORDER INFORMATION
Device
Device Code
Y is package & Pin Assignments designator:
S: SOP-8
RS2332 Y Z
Z is Lead Free designator:
P: Commercial Standard, Lead (Pb) Free and Phosphorous (P) Free Package
G: Green (Halogen Free with Commercial Standard)
V1.2
2
December 2014
RS2332
PIN CONFIGURATION
PIN DESCRIPTION
Pin Name
Description
Pin No.
Loop Compensation pin. Connect a compensation network to stabilize the LED driver and
achieve an accurate LED driver current.
Reference GND of IC
COMP
GND
1
2
Current sense pin. The MOSFET current is sensed via a resistor. If the voltage in this pin
is higher than the current limit threshold 1.0V after some blanking time in the turn-on
interval, the gate signal will be turned off.
CS
3
Gate drive output pin. The totem pole output stage is able to drive high power MOSFET
with a peak current of 0.5A source capability and 0.8A sink capability. The high level
voltage of this pin is clamped to 19V to avoid excessive gate drive voltage.
Power supply.
GATE
VCC
4
5
Zero current detection pin. A negative going edge triggers the turn on signal of the
external MOSFET. Connect this pin through a resistor divider from the auxiliary winding to
GND. Over-voltage conditions is detected through ZCD. If ZCD voltage is higher than the
over-voltage-protection (OVP) threshold after a blanking time 1μs, the over-voltage
condition is detected.
ZCD
6
NC
HV
No connect
High voltage startup switch instead of resistor
7
8
V1.2
3
December 2014
RS2332
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian Dist., New Taipei City 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.2
12
December 2014
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