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WS3110 PDF Datasheet - Winsemi

Part Number WS3110
Description High Performance erformance LED Driver
Manufacturers Winsemi 
Logo Winsemi Logo 
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WS3110 datasheet, circuit
WS3110
WS3110 High Performance LED Driver
Features
■ Fast start-up time
■ Low operation current (0.6mA)
■ PSR control with Single stage PFC topology
■ CC±5%
■ Programmable output current and output voltage
■ Internal Line and Load compensation
■ Internal soft-start
■ Built in Leading edge blanking (LEB)
■ Cycle-by-cycle Over-Current Protection
■ VCC over-voltage protection (VCC-OVP)
■ VCC under voltage lockout (UVLO
■ Over temperature protection (OTP)
■ Transformer saturation protection
■ Inter power-mos saturation protection
■ Output LED open/short protection
■ CS pin open/short protection
Applications
■ LED lighting
■ Down light
■ Tube lamp
■ PAR lamp
■ Bulb
General Description
WS3110 is a power factor correctionprimary-side-control
LED lighting driver with advanced features to provide high
efficiency control for lighting application.
WS3110 applies source driver technologyits internal fast
start-up circuit greatly shorten the start-up time while
keeping extremely low standby power consumption.
With internal line-compensation, the WS3110 provides
accurate constant current (CC ± 5%) regulation at
universal AC input.
WS3110 offers complete protection coverage with
automatic self-recovery feature including cycle by cycle
over current protection (OCP), VCC over-voltage
protection (VCC-OVP) and under voltage lockout (UVLO),
output LED short/open protection, CS pin short/open
protection, and over-temperature protection (OTP). The
gate-driven output ST is clamped to maximum 15V to
protect the external MOSFET. Excellent EMI performance
is achieved by using soft-driver technology.
WS3110 is offered in SOP-8 packages.
Typical Application Circuit
cs ST
gnd Source
comp vcc
mult ZCD
W/T-S023-Rev.A/2 Mar.2013
Copyright@Winsemi Microelectronics Co., Ltd., All right r eserved.
0313

1 page
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WS3110 pdf, schematic
Pin Definition and Device Marking
WS3110 is offered in SOP-8 packagesas shown below
WS3110S8P:
A: Product Code
X: Internal Code
BArea Code
YMYear Month
WS3110
Pin Function Description
Pin Name
Pin No.
DIP8/SOP8
CS 1
GND
2
COMP
3
MULT
4
ZCD
5
Pin Type
I
P
I/O
I
I
VCC
ST
Source
6
7
8
P
P
O
Function Description
Current sense input pin
Ground. pin of the IC
Output of the error amplifier, connect a capacitor to ground for loop
compensation
Input of the multiplier, connect this pin to line voltage via a resistor
divider to detect the sinusoidal line voltage
Zero current detection and out voltage feedback pin, connect this
pin through a resistor divider from the auxiliary winding to ground, It
use for out voltage feedback
Supply voltage of the IC
Start-up pin ,connect to the gate of power-mos
Source driver output, connect to the source of power-mos
Block Diagram
c s 15
comp 3
S& H
Current
control
REF
GM
L ine
com pensat i on
PWM
L oad
com pensat i on
Clamp
@ 2V
LED
s hort
mult 4
Mult
Start up
UVLO
8 oSuoturce
L ogic
&
driver
T rans former
saturation
protect
Second-on
detect
LED
OVP
Inter
s uppl y
85 Z C D
2 76
gnd S T vcc
Steady, keep you advance
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2 Page
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WS3110 equivalent
Vds _OVP
Inter power mos saturation
Vds =(Vsource-Vcs)
protection
Vd_OVP
Transformer
protection
saturation
Temperature Section
OTP
Over temperature protection
WS3110
2.1 V
3.3 V
150
Steady, keep you advance
5/8

5 Page





Information Total 8 Pages
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