STR-A6100
Series
PRC, Auto Burst Standby, Current-Mode Control
Newuct
Newuct
rod
rod
P
P
Low Power Off-line SMPS Primary Switcher
Features
●
PRC
〔Pulse
Ratio Control〕 (8µs fixed off-time, variable on-time)
:
The switching frequency varies within an optimum range of 63kHz to 120kHz, according to load
variations, to create a quasi-jittering, low-EMI noise operation.
●
Auto burst standby:
(No Load Consumption < 100 mW at AC 264V)
Enables very low power consumption at no load.
Typical results of a 5W universal input power supply are 35mW at AC110V and 43mW at AC220V.
●
Auto bias function
This function stabilizes operation during Auto Burst Standby mode, by preventing a Hiccup mode.
The Auto Bias function forces the IC to turn on before the V
CC
voltage reaches V
CC (OFF)
, thereby
stabilizing the entire power supply operation.
●
Integrated startup circuit
600V BCD process allows direct connection of the STARTUP pin to the rectified high voltage
rail. This reduces component count and improves overall efficiency.
●
Current mode control
●
Leading edge blanking
Not required the external Low-pass filter circuit which prevent the malfunction due to the leading
edge spike current.
●
Avalanche energy guaranteed MOSFET with high V
DSS
The built-in power MOSFET simplifies the surge absorption circuit since the MOSFET guarantees
the avalanche energy.
No V
DSS
de-rating is required.
●
Various protecting functions
• Over current protection ------------ pulse by pulse
• Over voltage protection ------------ with latch
• Overload protection ---------------- Auto restart
• Thermal shutdown ------------------ with latch
Package (DIP-8)
Outline (TOP VIEW)
Startup
5
4
3
V
FB
/OLP
GND
V
CC
S/OCP
Drain
Drain
7
8
2
1
Applications
Battery Charger ----------------------
Standby Power Supply ---------------
S.M.P.S. --------------------------------
Controller Power Supply ------------
Cell Phone, Digital Still Camera, Camcorder, Shaver, Emergency light, Guidance light, and etc.
Various TV applications, PC, LBP, Audio system and etc.
Ink jet printer, DVD Player/ Recorder, VCR, Set Top Box and etc.
Air conditioner, Refrigerator, Washer, Dish Washer and etc.
Product Lineup
Part Number
V
DSS
500V
R
DS(ON)
3.95Ω
2.62Ω
1.90Ω
650V
800V
3.95Ω
6.00Ω
19.20Ω
V
IN(AC)
100V/120V
100V/120V
230V/85V∼264V
230V/85V∼264V
230V/85V∼264V
230V/85V∼264V
Pout
12W
16W
24W/20W
16W/12W
13W/10W
8W/5W
STR-A6131
STR-A6132
STR-A6153E
STR-A6151
STR-A6159
STR-A6169
STR-A6100
Series
■
Design example (STR-A6159)
F1
L1
C1
D1
+
C2
400V
22µF
1000pF
630V
C91
100kΩ
R91
SFPB-76
D11
PC1
PC123
R11
220Ω
R12
1.5kΩ
50V
0.1µF
C13
27kΩ
R14
(5W Universal input-single output power supply)
L2
＋5V/1A
AC85∼264V
D91
EG01C
C11
10V
470µF
+
+
C12
10V
220µF
IC2
TL431
8
D
7
D
5
Start up
EG01Z
D2
+
C4
35V
22µF
T1
EI-16
27kΩ
R15
GND
IC1
STR-A6159
OCP V
CC
GND FB
1
2
3
4
4700pF
50V
C3
+
R3
2.2Ω
RD5.1 D3
C5
PC1
PC123
50V
2.2µF
2200pF
250V
C99
■
Electrical Characteristics of the above power supply design
Efficiency
η
vs Output Current I
O
100
90
80
0.7
0.6
AC85V
AC110V
AC220V
AC264V
Input Power Pin vs Output Power P
O
Input Power Pin (W)
1.0
Efficiency
η
(%)
70
60
50
40
30
20
10
0
0.0
0.2
0.4
0.6
0.8
AC85V
AC110V
AC220V
AC264V
0.5
0.4
0.3
0.2
0.1
0.0
0.0
0.1
0.2
0.3
0.4
Output Current I
O
(A)
Output Power P
O
(W)
CAUTION / WARNING
Sanken reserves the right to make changes without further notice to any products herein in the interest of improvements in the performance, reliability, or
manufacturability of its products. Before placing order, Sanken advises its customers to obtain the latest version of the relevant information to verify that
the information being relied upon is current.
●
Application and operation examples described in this document are supplementary and conditions and variation in additional parts are not considered.
When using the products herein, the applicability and suitability of such products for the intended purpose or object shall be reviewed at the users
responsibility.
●
Application and operation examples described in this document are quoted for the sole purpose of reference for the use of the products herein and Sanken
can assume no responsibility for any infringement of industrial property rights, intellectual property rights or any other rights of Sanken, or any third party
which may result from its use.
●
Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of semiconductor products at a
certain rate is inevitable. Users of Sanken products are requested to take, at their own risk, preventative measures including safety design of the
equipment or systems against any possible injury, death, fires or damages to society die to device failure or malfunction.
●
This publication shall not be reproduced in whole or in part without prior written approval form Sanken.
●
Tokyo Office
1-11-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, JAPAN
PHONE: +81-3-3986-6164
Overseas Sales Offices
Asia
Sanken Electric Singapore Pte. Ltd.
PHONE: +65-291-4755
150 Beach Road, #14-03 The Gateway West, Singapore 0718
Sanken Electric Hong Kong Co., Ltd.
PHONE: +852-2735-5262
1018 Ocean Centre, Canton Road, Kowloon, Hong Kong
Sanken Electric Korea Co., Ltd.
PHONE: +82-2-714-3700
SK Life Bldg. 6F, 168 Kongduk-dong, Mapo-ku, Seoul, 121-705, Korea
North America Allegro MicroSystems,Inc.
PHONE: (508)-853-5000
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615, U.S.A.
Allegro MicroSystems, Europe Limited.
PHONE: 01932-253355
Europe
Balfour House, Churchfield Road, Walton-on-Thames, Surrey KT12 2TD, U.K.
FAX: +81-3-3986-8637
FAX: +65-297-1744
FAX: +852-2735-5494
FAX: +82-2-3272-2145
FAX: (508)-853-7861
FAX: 01932-246622
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