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STRX6756 Datasheet Preview

STRX6756 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-X6756
Sep. 2013
General description
The STR- X6756 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.
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
Package
Package name: TO-3PF-7L
Specification
MOSFET
650V(MIN), 0.73Ω(MAX)
Application
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-X6700
D
1
VCC
4
2
S
ROCP
Cont.
37
GND
OCP
/BD
6
FB
5
SS
/OLP
RX
CX
P
S1
ErrAmp
+B
D
S2
RSeIg
RegE:rrSAamnpkSeAnNKliEnNe aSrE reSegruieslator IC, etc.
SISANKEN Linear Regulator IC
GND
Standby
ON/OFF
LowB
Standby
Out
GND
Sanken Electric Co., Ltd.
1/11




Sanken

STRX6756 Datasheet Preview

STRX6756 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-X6756
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
12
1−2
IDpeak(1)
IDMAX(2)
13.2
13.2
A Single pulse
A Ta=-20 to +125°C
Avalanche Energy
Control Power Supply Voltage
1−2 EAS(3)
4−3 VCC
Single pulse
378 mJ VDD= 30V, L=50mH
ILpeak=3.8A
35 V
SS/OLP pin Voltage
5−3 VSSOLP
0.5~6.0
V
FB pin Inflowing Current
6−3 IFB
10 mA
FB pin Voltage
6−3 VFB
0.5~9.0
V Within IFB control
OCP/BD pin Voltage
7−3 VOCPBD
1.5~5.0
V
MOS FET Power Dissipation
Control Power Dissipation
(MIC)
Operating Inner Flame
Temperature
Operating Ambient Temperature
1−2 PD1(4)
4−3 PD2(5)
TF
TOP
41
2.8
0.8
20~+125
20~+125
W By infinite radiator
W No radiator
W Defined by VCC×ICC
°C
Refer to recommended
operating temperature
°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 STRX6756
Description Power IC for Quasi-Resonant Type Switching Power Supply
Maker Sanken
Total Page 11 Pages
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