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| STR-W605XS Datasheet, PDF (1/14 Pages) Sanken electric – PWM Off-Line Switching Regulator ICs | |||
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STR-W6000S Series
PWM Off-Line Switching Regulator ICs
Features and Benefits
⪠Current mode PWM control
⪠Brown-In and Brown-Out function: auto-restart, prevents
excess input current and heat rise at low input voltage
⪠Auto Standby function: improves efficiency by Burst
mode operation in light load
â« Normal load operation: PWM mode
â« Light load operation: Burst mode
⪠No load power consumption < 30 mW
⪠Operating frequency, fOSC(AVG)(typ) = 67 kHz
⪠Random Switching function: reduces EMI noise, and
simplifies EMI filters
⪠Slope Compensation function: avoids subharmonic
oscillation
⪠Leading Edge Blanking function
Continued on the next pageâ¦
Package: TO-220F-6L
Not to scale
Description
The STR-W6051S, STR-W6052S, and STR-W6053S are
power ICs for switching power supplies, incorporating a
power MOSFET and a current mode PWM controller IC in
one package.
To achieve low power consumption, these products include
a startup circuit and a standby function in the controller. The
switching modes are automatically changed according to load
conditions: in normal operation, PWM mode, and in light load
conditions, burst mode. The rich set of protection features
helps to realize low component counts, and high performance-
to-cost power supply.
Applications:
Switching power supplies for electronic devices such as:
⢠Home appliances
⢠Digital appliances
⢠Office automation (OA) equipment
⢠Industrial apparatus
⢠Communication facilities
Typical Application Circuit
VAC
BR1
C1
C(CR) damper
snubber
CRD clamp snubber
T1 D51
L51
U1
STR-W6000S
C5 R1
P
D1
RA
PC1
R51
R54
C51
R55
S
R52 C52
R53
U51
R56
VOUT
C53
GND
1 34567
RB
D2 R2
C4
ROCP
C10
C3
RC
PC1
C2 D
C9
STR-W6000S-DS
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/
February 27, 2013
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