900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






WINSEMI SEMICONDUCTOR

WIY2263 Datasheet Preview

WIY2263 Datasheet

Current Mode PWM Controller

No Preview Available !

www.DataSheet.in
FEATURES
Burst Mode function
Low startup current (4uA)
Low operating current (1.4mA)
Built-edge blanking
Built-in synchronized slope compensation
Current mode
External Programmable PWM Switching Frequency
By-cycle current limit protection (OCP)
VDD over-voltage clamping protection
Low voltage shut down function (UVLO)
Gate Drive Output Voltage Clamp (18V)
Frequency jitter feature
Constant output power limit
Overload protection (OLP)
Work does not produce audio noise
APPLICATIONS
Offline AC/DC flyback converter for
Power Adaptor
Open-frame SMPS
Battery Charger
Set-Top Box Power Supplies
TYPICAL APPLICATION
WIY2263
Current Mode PWM Controller
GERNERAL DESCRIPTION
WIY2263 is a highly integrated current mode PWM
control IC optimized for high performance, low standby
power and cost effective offline flyback converter
applications in sub 30W range.
PWM switching frequency at normal operation is
externally programmable and trimmed to tight range. At
no load or light load condition, the IC operates in
extended ‘burst mode’ to minimize switching loss. Lower
standby power and higher conversion efficiency is thus
achieved.
VDD low startup current and low operating current
contribute to a reliable power on startup design with
WIY2263. A large value resistor could thus be used in
the startup circuit to minimize the standby power. The
internal slope compensation improves system large
signal stability and reduces the possible sub-harmonic
oscillation at high PWM duty cycle output. Leading-edge
blanking on current sense(CS) input removes the signal
glitch due to snubber circuit diode reverse recovery and
thus greatly reduces the external component count and
system cost in the design.
WIY2263 offers complete protection coverage with
automatic self-recovery feature including Cycle-by-Cycle
current limiting (OCP), over load protection (OLP), VDD
over voltage clamp and under voltage lockout (UVLO).
The Gate-drive output is clamped to maximum 18V to
protect the power MOSFET. Excellent EMI performance
is achieved with Winsemi proprietary frequency shuffling
technique together with soft switching control at the
totem pole gate drive output.
WIY2263
TL431
Rev. A Mar.2010
Copyright@WinSemi Semiconductor Co.,Ltd.,All rights reserved.
P02-1




WINSEMI SEMICONDUCTOR

WIY2263 Datasheet Preview

WIY2263 Datasheet

Current Mode PWM Controller

No Preview Available !

www.DataSheet.in
GENERAL INFORMATION
Pin Configuration
WIY2263
Marking Information
Y: Year code(0:2010,1:2011……)
ww: Week code(1-52)
TERMINAL ASSIGNMENTS
Pin Name
GND
FB
RI
SENSE
Pin No. I/O
Description
1 P Ground
2
I
Feedback input pin. The PWM duty cycle is determined by voltage level into this pin
and SENSE pin input
3
I
Internal Oscillator frequency setting pin. A resistor connected between RI and GND
sets the PWM frequency.
4 I Current sense input pin. Connected to MOSFET current sensing resistor node.
VDD
5 P Chip DC power supply pin
GATE
6 O Totem-pole gate drive output for the power MOSFET.
BLOCK DIAGRAM
2/9
Steady, all for your advance


Part Number WIY2263
Description Current Mode PWM Controller
Maker WINSEMI SEMICONDUCTOR
PDF Download

WIY2263 Datasheet PDF





Similar Datasheet

1 WIY2263 Current Mode PWM Controller
WINSEMI SEMICONDUCTOR





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy