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STRW6765N Datasheet Preview

STRW6765N Datasheet

Power IC for Quasi-Resonant Type Switching Power Supply

No Preview Available !

Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency and Low Noise in Full Load Range
STR-W6765N
General description
The STR-W6765N is power IC for quasi-resonant type
switching power supply, incorporating a power MOSFET
and a controller IC. The product achieves high efficiency
and low noise power supply systems by the quasi-resonant
operation and the bottom-skip quasi-resonant operation.
Package
Package name: TO-220F-6L (FM207)
Sep. 2013
Features
Multi operation mode
The operation mode switching according to load
conditions achieves the optimal high efficiency and low
noise power supply systems across the full load range.
Current mode control
Built-in PWM oscillator
The PWM operates with the minimum frequency of
around 22kHz, until the quasi-resonant signal becomes
valid, reduces the stress on components at startup and
load-shorted.
Built-in soft start function
Step-drive function, reducing switching noise
Input compensation at overcurrent
The function reduces the distortion of overcurrent
operation point to AC input voltage change by adding
three components.
Avalanche energy guaranteed by two chips structure
(Simplification of surge absorbing circuit)
Protection functions
Overcurrent protection (OCP); Pulse-by-pulse
Overload protection (OLP); latched shutdown
Overvoltage protection (OVP); latched shutdown
Specification
MOSFET
800V(MIN), 1.8Ω(MAX)
Applications
Switching power supplies for
LCD-TVs, PDP-TVs, CRT-TVs and Digital consumer
equipment
Home appliances
OA equipments
Industry machines
Communication devices
Typical application circuit
STR-W6700
D
1
VCC
4
3
S/GND
ROCP
Cont
7
OCP
/BD
6
FB
5
SS
/OLP
RX
CX
P S1
+B
ErrAmp
D
S2
RSeIg
RESIrerASgAm:NpSKaSEAnNNk KeLEninNel airSnREee agSurelrariteeosrgIuC lator IC etc.
GND
Standby
ON/OFF
LowB
Standby
Out
GND
Sanken Electric Co., Ltd.
1/11




Sanken

STRW6765N Datasheet Preview

STRW6765N Datasheet

Power IC for Quasi-Resonant Type Switching Power Supply

No Preview Available !

Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency and Low Noise in Full Load Range
STR-W6765N
Sep. 2013
Absolute maximum ratings
The polarity value for current specifies a sink as "+," and a source as "−," referencing the IC.
Unless otherwise specified, TA = 25 °C
Item
Pin
Symbol
Ratings
Unit
Remark
Drain Current
Maximum Switching Current
13 IDpeak(1) 11.2
1−3 IDMAX(2) 11.2
A Single pulse
A Ta=-20 to +125°C
Avalanche Energy
Control Power Supply Voltage
SS/OLP pin Voltage
Single pulse
1−3 EAS(3) 300 mJ VDD= 99V,L=20mH
ILpeak=5.3A
4−3 VCC
35 V
5−3
VSSOLP
0.56.0
V
FB pin Inflowing Current
FB pin Voltage
6−3 IFB
10 mA
6−3
VFB
0.59.0
V
Within IFB control
OCP/BD pin Voltage
7−3
VOCPBD
1.55.0
V
MOS FET Power Dissipation
28.7 W By infinite radiator
1−3
PD1(4)
1.3 W
No radiator
Control Power Dissipation (MIC)
4−3 PD2
0.8 W Defined by VCC×ICC
Operating Inner Flame Temperature
TF
20+115 °C
Refer to recommended
operating temperature
Operating Ambient Temperature
TOP 20+115 °C
Storage Temperature
Tstg 40+125 °C
Channel Temperature
Tch
+150
°C
(1) Refer to MOS FET A.S.O. curve
(2) Regarding the maximum switching current
The maximum switching current is drain current IC determined by inner drive voltage and MOS FET Vth.
(3) Refer to MOS FET Tch-EAS curve
(4) Refer to MOS FET Ta-PD1 curve
Sanken Electric Co., Ltd.
2/11


Part Number STRW6765N
Description Power IC for Quasi-Resonant Type Switching Power Supply
Maker Sanken
PDF Download

STRW6765N Datasheet PDF






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