Document
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 ▫ Normal load operation: PWM mode ▫ 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 page…
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 performanceto-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 D1
P
RA
C51 S
PC1 R52
R51 R55
C52
R54
R53
U51 R56
1 34567
RB D2 R2
VOUT C53
GND
D/ST S/ OCP V CC GND FB / OLP BR
C4 ROCP
C10 C3
PC1
RC
C2 D C9
STR-W6000S-DS
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/
February 27, 2013
STR-W6000S Series
PWM Off-Line Switching Regulator ICs
Features and Benefits (continued) ▪ Audible Noise Suppression function during Standby mode
▪ Protection features
▫ Overcurrent protection (OCP): pulse-by-pulse,
with input compensation function
▫ Overvoltage protection (OVP): auto-restart ▫ Overload protection (OLP): auto-restart, with timer ▫ Thermal shutdown protection (TSD): auto-restart
Selection Guide
Part Number
Power MOSFET
VDSS(min) (V)
RDS(ON)(max) (Ω)
Output Power*, POUT (W)
230 VAC
85 to 265 VAC
STR-W6051S
650
3.95
45
30
STR-W6052S
650
2.8
60
40
STR-W6053S
650
1.9
90
60
*The listed output power is based on the thermal ratings, and the peak output power can be 120% to
140% of the value stated here. At low output voltage and short duty cycle, the output power may be less
than the value stated here.
STR-A6000S-DS
SANKEN ELECTRIC CO., LTD.
2
February 27, 2013
STR-W6000S Series
PWM Off-Line Switching Regulator ICs
The polarity value for current specifies a sink as "+," and a source as “−,” referencing the IC.
Absolute Maximum Ratings Unless otherwise specified, TA = 25°C
Characteristic
Symbol
Conditions
Pins
Rating
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