2011/10
DIP-8
STR-A6000 Series
Power IC for PWM Type Switching Power Supply
with Low Noise and Low Standby Power
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General Descriptions
The STR-A6000 series products are power ICs for switching power supplies,
incorporating a power MOSFET and a current-mode type 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.
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Features
Current-Mode Type PWM Control
Built-in Random Switching Function
The function reduces the EMI noise and enables a simplified (low-cost) EMI filter,
by the slight- random-change of PMW frequency f
OSC
.
Auto-Standby Function: The burst-oscillation enables the low standby power. Input Power P
IN
< 25mW at no load
Built-in Startup Circuit, enabling low power consumption
Brown-In / Brown-Out Function
The function enables the oscillation start/stop by externally rated input voltage and makes protections at low input
voltage.
Overcurrent Protection (OCP) with Built-in Input Compensation Circuit:
The protection has less AC input voltage dependency.
Overload Protection (OLP) with Built-in Delay Timer
High Speed Latch Release Function
The function releases the latch immediately at AC supply OFF, after the latch protection operation.
Bias-Assist Function, reducing Operating V
CC
voltage drop
The function improves the startup operation and makes a low V
CC
capacitor applicable.
Leading Edge Blanking Function
Slope Compensation Function
Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET
Protections
Overcurrent Protection (OCP)--------------------------------- Pulse-by-Pulse
Overload Protection (OLP) ------------------------------------ Auto-Restart
Overvoltage Protection (OVP) -------------------------------- Latch Shutdown
Thermal Shutdown Protection (TSD) ------------------------ Latch Shutdown
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Applications
Battery Chargers; Mobile Phones, Digital Cameras, Camcorders, Electric Shavers, Emergency/Inducement Lights etc.
Standby Power Supplies; LCD-TVs, PDP-TVs, Desk-Top PCs, LBPs, Audio Equipment, etc.
Small SMPSs; Ink Jet Printers, BD/DVD Players, CD Players, Set-Top-Boxes, etc.
Auxiliary Power Supplies for Controllers; Air Conditioners, Refrigerators, Washing Machines, Dish Washers, etc
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Product Lineup
Product No Operation
Frequency
(kHz)
MOSFET
V
DSS
MIN
(V)
R
DS(ON)
MAX
(Ω)
P
OUT
(Note 1)
230VAC/Universal
STR-A6051M 67 650
3.95 16W / 12W
STR-A6052M 2.8 20W / 16W
STR-A6053M 1.9 24W / 20W
STR-A6059H
100
6.0 10W / 8W
STR-A6061H
700
3.95 13W/11W
STR-A6061HD
3.95 13W/11W
STR-A6062H 2.8 15W / 13W
STR-A6069H 6.0 10W / 8W
STR-A6079M 67 800 19.2 8W / 5W
Note 1: The maximum output power is derived from thermal specifications. The actual output power may be
available around 120 –140% of the above values, respectively, but may be limited by ON duty setting on
transformer design or lower output voltage.
SANKEN ELECTRIC CO.,LTD.
Warning
The contents in this document are subject to changes, for improvement and other purposes, without notice.
Make sure that this is the latest version of the document before use.
The operation and circuit examples in this document are provided for reference purposes only. Sanken assumes no liability for violation of industrial property, intellectual property, or other rights of
Sanken or third parties, that stem from these examples.
The user must take responsibility for considering and determining which objects the products in this document are used with.
Although Sanken will continue to improve the quality and reliability of its products,
semiconductor products, by their nature, have certain fault and failure rates. The user must take responsibility for designing and checking to secure the device and system so that a part failure may not lead
to human injury, fire, damages, or other losses.
The contents in this document must not be transcribed or copied without Sanken’s written consent.
2011/10
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Typical Application Circuit
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Typical Electrical Characteristics
STR-A6079M Efficiency & Input Power at Standby
S
SS
ST
TT
TR
RR
R-
--
-A
AA
A6
66
60
00
00
00
00
00
0
D
DD
D/
//
/S
SS
ST
TT
TD
DD
D/
//
/S
SS
ST
TT
TV
VV
Vc
cc
cc
cc
c
8
88
8 7
77
75
55
5
B
BB
BR
RR
RS
SS
S/
//
/O
OO
OC
CC
CP
PP
P
1
11
1 2
22
2 3
33
3 4
44
4
G
GG
GN
NN
ND
DD
D O
OO
OL
LL
LP
PP
P
F
FF
FB
BB
B/
//
/
V
VV
V
O
OO
OU
UU
UT
TT
T
G
GG
GN
NN
ND
DD
D
V
VV
VA
AA
AC
CC
C
100VAC 220VAC
Output Power P
OUT
(W)
Efficiency
η(%)
20
30
40
50
60
70
80
90
0 2 4 6
Without Brown-IN/Brown-OUT Detection Resistor
0
50
100
150
200
250
0 50 100 150
Standby Power (P
OUT
: 5W Power Supply)
Output Power P
OUT
(mW)
At No Load
19.6mW 100VAC
20.0mW 220VAC
100VAC 220VAC
Efficiency η－
－－
－ Output Power P
OUT
Input Power
P
IN
(mW)
