SSC1S311A Просмотр технического описания (PDF) - Sanken Electric co.,ltd.
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SSC1S311A Datasheet PDF : 28 Pages
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Quasi-Resonant Off-Line Switching Control ICs
SSC1S311A
Data Sheet
Description
SSC1S311A is the controller IC of a quasi-resonant
mode for a switching power supplies. The IC
incorporates a startup circuit and a standby function to
reduce a power consumption and standby power. In
normal operation, the quasi-resonant mode operation
achieves high efficiency and low noise. In addition, in
medium to low load conditions, the operation mode is
automatically changes the quasi-resonant mode to the
bottom-skip mode to improve efficiency. The IC is
provided in the SOIC8 package. The power supply that
is a low component counts and a high performance-to-
cost can be achieved by the rich set of protection
features.
Features
● Multi-Mode Control
(High efficiency operation in all range of loads)
● Automatic Standby Function
(Standby power is inproved by burst oscillation mode)
● Input Power at No Load:
<30mW at 100VAC
<50mW at 230VAC
● Bottom-Skip Function
(Switching loss in medium to low loads is reduced)
● Step-on Burst Oscillation Function
(Transformer audible noises are reduced)
● Bias Assist Function
● Soft-Start Function
● Adjustable Startup Voltage
● Maximum On-time Limitation Function
● VCC Operational Range Expanded
● Leading Edge Blanking (LEB) Function
(External Filter Components are reduced)
● Protection Functions
Overcurrent Protection (OCP): Pulse-by-pulse
Overvoltage Protection (OVP): Auto-restart
Overload Protection (OLP): Auto-restart
Thermal Shutdown (TSD): Auto-restart
Typical Application
D1
VAC
C1
CV
Q1
D3 R5
R4
R3
R12
C9
87
6
5
GND VCC OCP DRV
U1
SSC1S311A
ROCP
FB/OLP BD
ST
1
2
4
R1
C3 PC1
C4
C5
T1
D4
P
RST
D2
C2
R2
D
DZBD
RBD1
C6
S
CBD
RBD2
L1
R9
PC1 R6
R10
R7
C7 R8
U2
R11
VOUT
C8
GND
Packages
SOIC8
Not to scale
Specifications
● VCC Maximum rating: 35 V
● Operation Start Voltage,VCC(ON): 15.1 V (typ.)
● PWM Operation Frequency, fOSC: 21.0 kHz (typ.)
● Maximum On-time, tON(MAX): 40.0 µs (typ.)
Applications
● Digital Appliance
● Office Automation (OA) Equipment
● White Goods
● Industrial Apparatus
● Communication Facilities
SSC1S311A-DSE Rev.1.3
SANKEN ELECTRIC CO., LTD.
1
Dec. 22, 2017
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2012
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