Switching Power Supply Controller RS2201, produced advanced integ

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Switching Power Supply Controller RS2201, produced advanced integ

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RS2201
Switching Power Supply Controller
RS2201, produced advanced integrated circuit process, switch power supply controller, which could offer over-load saturation protection, achieve green economize energy environmental protection standard. RS2201 could achieve AC/DC conversion widely applied economical switching power supply equipment. instance, ChargerDVD, Induction cooker, STB, Printer,
Features
Over-load saturation protection could protect over-load, switch transformer saturation output short circuit relative failures. economical that triode used switch device, which could start circuit with amplification function reduce times power consumption start-up resistance. Built-in Synchronized Slope Compensation circuit, thermal protection circuit, slope current drive circuit. Zero-load output power consumption could less than 0.3W, less than 0.2W while 220V input. THX201 Pb-Free DIP-8 SOP-8 Package.
Applications
Switching AC/DC Adaptor Battery Charger Open Frame Switching Power Supply Standby Power Supplies Set-Top Power Supplies 384X Replacement
Configurations
Name
Description connecting ground switching frequency 2.5V reference voltage output Feedback Current sense. Power Transistor Emitter drive output start-up current input. Power Transistor Base drive output start-up current control. Power Supply.
DS-RS2201-01
Nov, 2007
www.Orister.com
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Typical Application Circuit
Operation description
Initially, after power output pull-up current source turn off. inputs start-up current from power transistor VCC. controls base current power transistor limits collector current (start-up accept current RS2201) power transistor safeguard power transistor. When voltage rises 7.8V, start-up phase completes goes normal operation. normal operation, voltage must keep 4.75~9.8V, outputs 2.5V reference voltage. pull-up current source turns Oscillator outputs OSC1 decide maximum duty cycle OSC2 trigger power supply entering open cycle cover spike value power transistor start-up current. less than 1.8V(about 1.2-1.8V), less wider oscillation cycle is.This characteristics reduces standby consumption switching power supply. external feedback intends greater than 9.8V, internal feedback circuit regular 9.8V.Making this characteristics stable output voltage using external feedback circuit, regulating precise. open cycle, provides base current power transistor, pulls down emitter power transistor adopts slop current drive open current function, when IS=0V,OB open current about 40mA, open current increasing with linear increasing. When increases 0.6V, open current about 120mA. This characteristics makes output current effectively reduces power consumption RS2201). detects designated current, enters closed cycle. closed cycle, pulls down, power transistor turn immediately clamps 1.5V (after power transistor turn off, base reverse bias, breakdown voltage power transistor improved). open closed cycle, power transistor detected exceed upper limit current, upper limit current trigger will firstly forces pull down, duty cycle reduced, protect power transistor transformer. next closed cycle start-up time, when less than 1.8V, upper current trigger resets. addition, RS2201 built thermal protection, when internal temperature above 140, will widen cycle oscillator, that temperature RS2201 will exceed 150. Slop compensation built stabilization open/closed cycle during maximum duty cycle continual current mode RS2201. reduces 4.4V, oscillator turn off, OSC1 OSC2 level, power supply keeps closed cycle. when continually reduces about RS2201 enters start-up phase again.
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Nov, 2007
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Fig.1 OPEN/CLOSED CYCLE WAVES NORMAL OPERATION
Electrical parameter definition
Start-up accept current: node current when 0.1mA pull-down current start-up phase. Start-up static current: connects filter capacitor adjustable current source, connects 680PFother pins floating. minimum current that could oscillate VCC. Start-up voltage: max. value oscillation above. Restart voltage: min. value oscillation above. Voltage Oscillator turn off: value, which stops oscillator falling time oscillation above. Static current: normal operation, connects grand through 1.8K resistor. power supply current. pull-up/ pull-down current oscillator: normal operation, FB=2.5V,CT=1.25V, pull-up /pull-down current
Fig.2 RS2201 SIGNAL WAVES DS-RS2201-01 Nov, 2007 www.Orister.com
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pull-up current: normal operation, when FB=2.5V,IS=0V, pull current protecting upper limit current: normal operation, FB=2.5V,IS=0.8Vpull down current Internal feedback power supply voltage: normal operation, value RS2201 power supply without external standby feedback circuit. upper limit current: FB=2.5Vexternal adjustable power supply there minimal voltage pull-down current Slope current drive: open current function, when IS=0V,OB open current about 40mA, open current increasing with linear increasing. When increases 0.6V, open current about 120mA. Frequency: function external capacitor, about C*24000 seconds.
Electrical Characteristics
Symbol Parameter Start-up accept current Start-up static current Start-up voltage Oscillator voltage Restart voltage Inner oscillator voltage Operating Current reference voltage Oscillator Frequency Oscillator pull-up current Oscillator pull-down current Maximum Duty Cycle Feedback Voltage pull-up current prevent upper limit current upper limit current Clamp Voltage open current open current closed current closed current output current Conditions Min. 4.25 VCC=8V CT*24000 CT=1.25V CT=1.25V CT=680PF IS=0.5V,CT=0.6V FB=2.5V,IS=0V FB=2.5V,IS=0.8V IS-GND =0.75 OE=0.001~1.2A IS=0.5V IS=0.0V OB-IS=1V OB-IS=0.25V OE-IS=0.6V Typ. 4.50 10.0 0.60 -210 -4.5 -1.2 Max. 4.75 10.4 Unit
Fosc
0.54 -145
0.62 -230
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Nov, 2007
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RS2201 12W12V/1ADemo Board Circuit Diagram
List
Part Location C9,C10 D1;D2 LED1 Description RES;SMD;1206;+/-5% RES;SMD;1206;+/-5% RES;SMD;0805;+/-5% RES;SMD;1206;+/-5% RES;SMD;0805;+/-5% RES;SMD;0805;+/-5% RES;SMD;0805;+/-5% RES;SMD;0805;+/-3% RES;SMD;0805;+/-3% RES;MOF;+/-5%,1W C/E;10*15;105;+/-20%;KMG C/C;DIP;+/-10%;Pintch=200mil C/E;5*11;105;+/-20% C/C;DIP;+/-10%;Pintch=200mil C/C;SMD;+/-10%;0805 C/C;SMD;+/-10%;0805 C/C;SMD;+/-10%;0805 C/Y1;+/-20%;Pintch=400mil; BRIGE; SMD;1A DIODE; 3A;100V; DO-201AD DIODE; 1A;1000V;Fast Recovery;SMA-214 DIODE;1A;100V;DO-35 FUSE,T2AL/250V;4.5*14.5L;Glass 7*10; FILTER;UU9.8 1.5A;TRANSISTOR;Vcev700V HFE=20;+/-10%;TO225A TRANSFORMER; GREEN;3 DIP8 SOT23-3 Value 2.2M 100K 3.3K 10uF/400V 222/1KV 47uF/25V 102/100V 681/25V 104/25V 103/25V 470uF/16V 104/275Vac 222M/400V 1A/600V SR3100 FR107 1N4148 FUSE 10uH 20mH MJE13003 EI-22 GREEN RS2201 PC817 TL431 UNIT
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Nov, 2007
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Transformer Design
Transformer Specification 1)Bobbin&PinEI22(10PIN) 2)CorePC40(TDK) L(1-3) 1.3mH+/-5% (1KHZ0.3V25)
Winding Table Part Winding TAPE TAPE TAPE NVCC TAPE Start 9,10 Closed Wire Gauge(mm) 0.27*1 W=8mm 0.51*1 W=8mm 0.27*1 W=8mm 0.18*1 W=8mm Note
9,10
Nvcc
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Features Power supply design
Switching power supply design back current control, discontinuous( little continuous voltage) current operating mode. Start-up current power supply designed 0.5-3mAthe amplification multiple power transistor should calculate times. choose start-up resistor, base current power transistor must 0.05-0.3mA when power supply starts power consumption start-up resistor should reduced times reduce standby power consumption. C5=680pFthe maximum operating frequency about 60KHz. Switching transformer providing operation current RS2201 with operating power supply consults winding commutating output 4.8-9V(6V recommend). maximum value primary peak current switching transformer 0.8A. When demagnetization voltage 140V 220Vac, maximum output power considering power supply efficiency other factors. wide voltage demagnetization voltage 110Vac, little continuous current mode adapted when voltage below 95Vac, maximum output power 18W. choice power transistor: maximum peak value current 0.8A, value power transistor should reach 10@5Vce@0.8A considering open current corresponding detecting resistor 0.75. power transistor should work saturation zone case detecting resistor 0.6V/the maximum value peak current. Even RS2201 thermal protection, high output power needed, would reduce output power output voltage widening thermolysis area considered. when output power high, power transistor thermolysis issue must considered.
RS2201 12W12V/1ADEMO CHARACTERISTIC TEST REPORT
Table Input characteristic full load Input voltage Irms(A) Pin(W) 90V/63Hz 0.163 14.9 115V/60Hz 0.122 14.5 230V/50Hz 0.056 14.5 264V/47Hz 0.053 14.7 Table Standby power load(4mA current) Input voltage Vo(V) 90V/63Hz 12.205 115V/60Hz 12.205 230V/50Hz 12.204 264V/47Hz 12.204 Table Line Regulation Load Regulation Input voltage 90Vac/60HZ 115Vac/60HZ 132Vac/60HZ 180Vac/50HZ 230Vac/50HZ 264Vac/50HZ Line Regulation Load Regulation load 12.205 12.205 12.204 12.205 12.204 12.204 Half load 12.203 12.203 12.203 12.203 12.203 12.202 0.008% 0.033% Full load 12.202 12.202 12.202 12.201 12.201 12.201 Pass Pass Specification Test result Vo(V) 12.202 12.202 12.201 12.201 Io(A) 81.9 84.2 84.2 83.0 Specification >75% Test result Pass
Pin(W) 0.19 0.20 0.25 0.27
Specification <0.3W
Test result Pass
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Nov, 2007
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Table Line Regulation Load Regulation Input voltage 90Vac/60HZ 115Vac/60HZ 230Vac/50HZ 264Vac/50HZ load 10.3mV 12.5mV 17.6mV 19.4mV Full load 23.4mV 24.2mV 26.8mV 29.0mV <60mV Specification Test result Pass Pass Pass Pass Note
Note: Ripple noise measured cord end(1.2M/18AWG)with 0.1uF/100V ceramic connected parallel with 10uf/50V electrolytic cap. Bandwidth limited 200MHz. Table Test Item Input characteristic Input current Standby power Efficiency Output characteristic Line regulation Load regulation Ripple Noise Over shoot Under shoot Dynamic test Time sequence Turn delay time Hold time Rise time Fall time Protection Over voltage protection Over current protection Short circuit protection Brownout/Brownout recovery Pass 1.2~1.7A Pass Pass >10mS 300mS(max) 12.4mS 14.6 11.7 60mV 600mV 600mV 0.008% 0.033% 29mV(max) 350mV 300mV (264Vac,with (4mA current)) 0.3A Max. <0.3W >75% 0.163A 0.27W 81.9%(min) Specification Test result
DS-RS2201-01
Nov, 2007
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PACKAGE DEMENSIONS
DIP-8L
Dimensions
Symbol Millimeters Min. 0.381 3.175 Typ. Max. 5.334 3.429 Min. 0.015 0.125 Inches Typ. Max. 0.210 0.135
9.017 6.223 2.921 8.509
3.302 1.524 0.457 9.271 7.620 6.350 2.540 3.302 9.017
10.160 6.477 3.810 9.525
0.355 0.245 0.115 0.335
0.130 0.060 0.018 0.365 0.300 0.250 0.100 0.130 0.355
0.400 0.255 0.150 0.375
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SOP-8L
Dimensions
Symbol Millimeters Min. 1.346 0.101 0.406 0.203 4.648 3.810 1.016 5.791 0.406 4.978 3.987 1.524 6.197 1.270 0.183 0.150 0.040 0.228 0.016 Typ. Max. 1.752 0.254 Min. 0.053 0.004 0.016 0.008 0.196 0.157 0.060 0.244 0.050 Inches Typ. Max. 0.069 0.010
1.270 0.381X45
0.050 0.015X45
Ordering Information
PART NUMBER RS2201S RS2201P PIN-PACKAGE SOP-8L DIP-8L
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Soldering Methods Orister's Products
Storage environment: Temperature=10oC~35oC Humidity=65%±15% Reflow soldering surface-mount devices Figure Temperature profile
Ramp-up Tsmax Temperature Critical Zone
Tsmin Preheat
Ramp-down
25oC Peak Time
Profile Feature Average ramp-up rate Preheat Temperature (Tsmin) Temperature (Tsmax) Time (min max) (ts) Tsmax Ramp-up Rate Time maintained above: Temperature (TL) Time (tL) Peak Temperature (TP) Time within actual Peak Temperature (tP) Ramp-down Rate Time 25oC Peak Temperature Flow (wave) soldering (solder dipping) Products devices. Pb-Free devices.
Sn-Pb Eutectic Assembly <3oC/sec 100oC 150oC 60~120 <3oC/sec 183oC 60~150 240oC +0/-5oC 10~30 <6oC/sec minutes
Pb-Free Assembly <3oC/sec 150oC 200oC 60~180 <3oC/sec 217oC 60~150 260oC +0/-5oC 20~40 <6oC/sec minutes
Peak temperature +0/-5
Dipping time 5sec ±1sec 5sec ±1sec
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Important Notice:
rights reserved. Reproduction whole part prohibited without prior written approval Orister Corporation. Orister Corporation reserves right make changes products without notice. Orister Corporation products warranted suitable Life-Support Applications, systems. Orister Corporation assumes liability consequence customer product design, infringement patents, application assistance.
DS-RS2201-01
Nov, 2007
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Switching Power Supply Controller RS2201, produced advanced integ

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