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WINSEMI |
WS3413 Product Description
WS3413 Active PFC Non-isolated Buck LED Driver
Features
� High Power Factor Correction, Low Total
Harmonic Distortion
� Dynamic Temperature Compensation
� 500V Power MOSFET Integrated
� No Auxiliary Winding For Supplying
� DIP8 Package, Up To 260mA Output Current
� Valley Switching, High efficiency, Low EMI
� Automatic Compensate the Inductance Variation
� Automatic Adapt to the Change of Output Voltage
� LED Short Circuit Protection
� Over Voltage Protection
� Over Temperature Protection
� Open Circuit Protection
� Few External Components
Applications
� LED Driver Supply
General Description
The WS3413 is designed for active PFC non-isolated buck
LED driver. It operates at valley switching mode with high
efficiency, low EMI and High PF. The output current
automatically adapt to the variation of the inductance and the
output voltage. The truly constant current LED is realized.
The WS3413 integrates 500V power MOSFET, using DIP8
package, producing up to 260mA output current.
It can achieve excellent constant current performance with
very few external components.
The WS3413 offers rich protection functions, including over
voltage protection, LED short circuit protection, cycle by
cycle current limiting, dynamic temperature compensation,
over temperature protection and soft start.
WS3413 consumes very low start current and operation
current, driving LED efficiently under universal AC
input(85VAC~265VAC).
WS3413 is available in DIP8 package.
Typical Application Circuit
5D
8
CS
6D
CS 7
3 VCC
FB 4
AC
2 GND
COMP 1
LE D+
LE D-
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
Copyright@Winsemi Microelectronics Co., Ltd., All right reserved.
WIN SEM I M ICROELECTRON ICS
W/T-D045-Rev.A/ 0 May.2014
WIN SEM I M ICROELECTRON ICS
0514
WS3413 Product Description
Pin Definition and Device Marking
WS3413 is available in DIP-8 package.
COMP
1
GND 2
VCC 3
FB 4
CS
8
7 CS
6D
5D
WS3413D8P: Product code
A: Product Code
X:Internal Code
B:Area Code
YM:Year, Month
Pin Function Description
Pin Name
Pin NO.
COMP
1
GND
2
VCC
3
FB 4
D5
D6
CS 7
CS 8
Description
Loop compensation, with a cap to GND.
Ground
Power supply
Feedback signal input.
Internal HV power MOSFET drain
Internal HV power MOSFET drain
Current sense input, connect to internal HV power MOSFET source
Current sense input, connect to internal HV power MOSFET source
Block Diagram
VCC
3
F B GND
42
8.5V
UVLO
Temperature
control
Inter
supply
Zero-Current
Detect
OVP
PFC
control
Logic
&
driver
COMP 1
1 .5 V
low-clamp
200mV
EA
Current
sense
OTP
OCP
1V
5,6 D
7,8 C S
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
www.winsemi.com Tel : +86-755-8250 6288 Fax : +86-755-8250 6299
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