STR2W152D Datasheet, PDF (1/9 Pages) Sanken electric – Current Mode Control PWM Regulator ICs For Switching Power Supplies

STR2W152D and STR2W153D
Current Mode Control PWM Regulator ICs
For Switching Power Supplies
Features and Benefits
• Current mode PWM control
• Built-in Random Switching function: reduces EMI noise,
simplifies EMI filters, and cuts cost by external part
reduction
• Built-in Slope Compensation function: avoids
subharmonic oscillation
• Built-in Leading Edge Blanking (LEB) function
• Auto Standby function:
▫ Input power, P_IN < 25 mW at no load
▫ Normal load operation: PWM switching
▫ Light load operation: Standby mode (Burst oscillation)
• Soft Start function: reduces stress on internal power
MOSFET and output rectifier diode
Continued on the next page…
Package: TO-220F-6L
Description
The STR2W152D and STR2W153D are power ICs for
switching power supplies, incorporating a power MOSFET
and a current mode PWM controller IC in one package.
Including a startup circuit and a standby function in the
controller, the products achieve low power consumption, low
standby power, and high cost-effectiveness in power supply
systems, while reducing external components.
The products are provided in fully molded TO-220 package
types. Pin 2 is deleted for greater isolation.
Applications
Switching power supplies for electronic devices such as:
• Home appliances
• Digital appliances
• Office automation (OA) equipment
• Industrial apparatus
• Communication facilities
Not to scale
D1
VAC
C1
Typical Application
CRD Clamp Snubber Circuit
D4
T1
C5
R3
P
D3
S
C6
U1
D2 R2
STR
2W100D
C2
D
L2
R9
PC1 ^R4
R8
R5
C7 R6
U2
R7
VOUT
C8
GND
C, RC
Damper
Snubber
Circuit
1 34567
C4
ROCP
C3 ^PC1
C9
STR2W100D-DS
SANKEN ELECTRIC CO., LTD.
May 14, 2012