STR3A200 Datasheet, PDF (1/25 Pages) Sanken electric – Off-Line PWM Controllers with Integrated Power MOSFET

Off-Line PWM Controllers with Integrated Power MOSFET
STR3A200 Series
Data Sheet
Description
The STR3A200 series are power ICs for switching
power supplies, incorporating a MOSFET and a current
mode PWM controller IC.
The low standby power is accomplished by the
automatic switching between the PWM operation in
normal operation and the burst-oscillation under light
load conditions. The product achieves high
cost-performance power supply systems with few
external components.
Features
● Low Thermal Resistance Package
● Current Mode Type PWM Control
● Soft Start Function
● Auto Standby Function
No Load Power Consumption < 15mW
● Operation Mode
Normal Operation: PWM Mode
Standby : Burst Oscillation Mode
● Random Switching Function
● Slope Compensation Function
● Leading Edge Blanking Function
● Bias Assist Function
● Protections
− Two Types of Overcurrent Protection (OCP) :
Pulse-by-Pulse, built-in compensation circuit to
minimize OCP point variation on AC input voltage
− Overload Protection (OLP) : Aauto-restart
− Overvoltage Protection (OVP) : Latched shutdown or
auto-restart
− Thermal Shutdown (TSD) : Latched shutdown or
auto-restart with hysteresis
Typical Application Circuit
VAC
BR1
C1
C4
T1
D51
C5
R1
P
D1
C51
S
8
7
6
5
D/ST D/ST DN/SCT D/ST
U1
STR3A200
S/OCP VCC GND FB/OLP
1234
D2 R2
C2
D
L51
R54
PC1 ^R51
R55
R52
C52 R53
U2
R56
VOUT
C53
GND
ROCP
C3
PC1
CY
TC_STR3A200_1_R1
Package
DIP8
Not to Scale
Lineup
● Electrical Characteristics
f_OSC(AVG) = 67 kHz
V_DSS(min.) = 650 V
Products
STR3A25×
STR3A25×D
OVP, TSD Operation
Latched shutdown
Auto restart
● MOSFET オン抵抗、出力電力 P_OUT*
Products
STR3A251
STR3A251D
P_OUT
P_OUT
R_DS(ON)
(Adapter)
(Open frame)
(max.)
AC230V
AC85
~265V
AC230V
AC85
~265V
4.0 Ω 29.5 W 19.5 W 37 W 23 W
STR3A253
1.9 Ω 37 W 27.5 W 53 W 35 W
STR3A253D
STR3A255
1.1 Ω 45 W 35 W 65 W 44 W
STR3A255D
* The output power is actual continues power that is measured at
50 °C ambient. The peak output power can be 120 to 140 % of
the value stated here. Core size, ON Duty, and thermal design
affect the output power. It may be less than the value stated here.
Application
● AC/DC adapter
● White goods
● Other SMPS
STR3A200 - DSJ Rev.2.0
SANKEN ELECTRIC CO.,LTD.
1
May.18, 2015
http://www.sanken-ele.co.jp
© SANKEN ELECTRIC CO.,LTD. 2013