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STR-A6100 Series
PRC, Auto Burst Standby, Current-Mode Control
Newuct Newuct d Pro d Pro
Low Power Off-line SMPS Primary Switcher
Features
PRC Pulse Ratio Control : (8s 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 VCC voltage reaches VCC (OFF), thereby stabilizing the entire power supply operation. Integrated startup circuit 600 V 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 VDSS The built-in power MOSFET simplifies the surge absorption circuit since the MOSFET guarantees the avalanche energy. No VDSS 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
VFB/OLP GND VCC 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 VDSS 500V RDS(ON) 3.95 2.62 1.90 650V 800V 3.95 6.00 19.20 VIN(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 22F 1000pF 630V C91 100k R91 SFPB-76 D11 PC1 PC123 R11 220 R12 1.5k 50V 0.1F C13 27k R14
(5W Universal input-single output power supply)
L2 5V/1A
AC85
264V
D91 EG01C
C11 10V 470F
+
+
C12 10V 220F
IC2 TL431 8 D 7 D 5 Start up EG01Z D2 + C4 35V 22F T1 EI-16
27k R15
IC1 STR-A6159
OCP VCC GND FB 1 2 3 4 4700pF 50V C3 +
R3 2.2
RD5.1 D3 C5
PC1 PC123
50V 2.2F
2200pF 250V C99
Electrical Characteristics of the above power supply design
Efficiency
100 90 80
vs Output Current IO
0.7 0.6
Input Power Pin vs Output Power PO
Input Power Pin (W)
70 60 50 40 30 20 10 0 0.0 0.2 0.4 0.6 0.8 1.0 AC85V AC110V AC220V AC264V
0.5 0.4 0.3 0.2 0.1 0.0 0.0
AC85V AC110V AC220V AC264V
Efficiency
(%)
0.1
0.2
0.3
0.4
Output Current IO (A)
Output Power PO (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. Europe Allegro MicroSystems, Europe Limited. PHONE: 01932-253355 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 H2-I23EA0-0401010TA

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