IPS15_REV12_APRIL07

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IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 1 / 15 – REVISION 12 - INTRODUCTION DESCRIPTION The IN-PLUG ® IPS15 is an enhanced off-line switcher version of the IPS10. It includes additional features such as soft start and over-voltage limiting. As the IPS10, the IPS15 Integrated Circuit was especially designed for low-cost, high efficiency, low- power fly-back off-line switching power supplies up to approximately 50 to 70W. It contains a shunt- regulator, a precision oscillator, a PWM with its associated comparator and loop compensation components as well as all the necessary biasing and protection circuitry (thermal shutdown, under-voltage, over-voltage and over-current). It is optimized to operate with an optocoupler to provide the feedback from the secondary but can also be used with a bias winding which could sometimes be more economical. Typical applications include domestic and international power supplies featuring AC input ranging from 90 to 264V and DC from 100 to 350V. In addition to being a low-cost IC, the IPS15 allows further cost reduction for the complete power supply thanks to: - fewer and cheaper associated components - a simpler, cheaper and more forgiving fly-back transformer. For very low power applications the IPS15 can be powered from the rectified AC through a simple resistor. For higher power applications, the IPS15 is powered through a novel patented network which replaces the usual snubber network. AAI will grant one non- exclusive royalty free licence to use this arrangement for each IPS15 purchased by Customers, either directly from the company or through approved sources. The IN-PLUG ® IPS15 can drive a large variety of power MOSFETs hence providing the maximum flexibility at the lowest possible cost. FEATURES • Lowest cost solution for low-power off-line flyback applications. • High performance yet forgiving. • Simple, less critical, lower cost transformer. • Wide range PWM for stable operation at any load and line voltage. • Suitable for constant-power applications. • Operates with optocoupler or bias winding for constant voltage applications: zeners, adjustable shunt regulator like TL431 or dedicated feedback controllers like AAI precision IPS22 & IPS25. • EMI reduction in critical applications thanks to: Adjustable operating frequency. Separate MOSFET N & P drives • Power shut-down for stand-by modes. • Cycle to cycle over-current protection • Under-voltage and over-voltage protection. • External component savings: MOV, X-cap, Y-cap (ESD/lightning permitting) APPLICATIONS • Standby power supplies for TV, VCR and IR remotely-controlled appliances. • Cordless and feature phones. • Cellular phone chargers. • Power tools fast chargers with trickle and on/off. • Laptops and personal digital assistants. • Utility meters. • Replacements for bulky plug-in transformers. PIN CONFIGURATION: DIP-8 / SOIC-8 IN-PLUG ® series: IPS15 Low Cost, High Efficiency, Low Power Enhanced Off-line Switcher PDRIVE NDRIVE ISENSE VCC RBIAS OVERV OPTO GND IPS15 1 4 5 8 Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 2 / 15 FUNCTIONAL BLOCK DIAGRAM TYPICAL APPLICATION SCHEMATIC: AC IN 110V, 5W OUTPUT, zener regulation (EMC components not shown). Figure 1 REF2 Bandgap reference _ _ + + R Q S RBIAS GND NDRIVE OVERV ISENSE OPTO VCC UNDER VOLTAGE LOCKOUT THERMAL SHUTDOWN ENB PWM COMPARATORS CURRENT LIMITING OSCILLATOR SHUNT REGULATOR FILTERS REF3 OVER VOLTAGE LOCKOUT ENB REF1 SOFT START PDRIVE VCC GND Q1 NMOSFET 1A, 600V U2 OPTO-NPN R6 100 D2 1N4148 D3 1N4148 R4 1.2 R3 470 1/2W C4 100pF 1KV 3 1 4 2 BR1 BRIDGE L1 4.2 uH OUT+ OUT- SecondaryGND PrimaryGND R2 820k 110V AC Snubber Network Patented TR1 TRANSF-1P1S LP=1.5mH, LS=1.5microH + C5 470uF 16V + C6 220uF 16V + C3 22uF 16V + C1 10uF 250V D4 Zener 9.2V D1 Schottky 5A - 60V R5 330k R1 4.3k R1A 1.5k R8 100k R7 10Meg 1/4W PDRV 1 ISENSE 2 VCC 3 RBIAS 4 NDRV 8 GND 7 OPTO 6 OVRV 5 U1 IPS15 C2 220pF Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 3 / 15 IN-PLUG ® IPS15 SERIES FUNCTIONAL DESCRIPTION The IPS15 is a PWM controller for fly-back switching power supply applications. It has been optimized to reduce the external component count. The principal features are: - Low start Current. - Shunt regulator to allow the maximum flexibility to power the chip. - Protections against overheating, under-voltage and over-voltage. - Precise oscillator with externally adjustable frequency. - On-chip filters for the loop compensation and the over-current sensing. - Soft start and over-voltage shut-down to protect the MOSFET. - Separate MOSFET P and N drivers to adjust rising and falling edge independently. The shunt regulator operates like a zener diode, keeping the chip supply voltage around 9.5 volts. At start-up the chip stays in stand-by mode until the voltage of VCC reaches about 9.5 volts. During this phase, the consumption is of the order of 120 μ A. When the 9.5 volts are reached, the driver starts providing gate pulses. The chip will go back to the stand-by mode if the supply voltage decreases down to ~8 volts. The overall chip consumption in normal operation is about 600 μ A, not counting the current required to drive the MOSFET gate. For domestic application, the chip can be supplied from the rectified line voltage through a resistor. In such case, the resistor has to be sized to drive enough current to the chip. For international applications, the IC gets the start current from a resistor connected to the rectified line voltage (~150 μ A) then, after the first gate pulse, the patented modified snubber network (*) provides the additional current to keep the chip running. The opto pin is pulled to VCC through an internal resistor, allowing a maximal duty cycle of 60 %. During start- up, the duty cycle is controlled by the internal soft start unit which smoothly increases the MOSFET current up to its maximum, corresponding to 700mV developped across the sense resistor. When the expected output voltage is reached, the optocoupler's led is driven, and the opto pin voltage decreases, reducing the duty cycle to a controlled value. The current limiting protection operates by turning-off the MOSFET when the ISENSE pin voltage exceeds ~700 mv. This ensures a cycle to cycle protection of the MOSFET and provides a mean of operating the power supply in constant-power mode. The voltage limiting protection operates by turning-off the MOSFET when the OVERV pin voltage exceeds 4V. (*) US Patent # 6,233,165 - Royalty free licence for IN-PLUG ® Customers. PIN DESCRIPTION Number Name Description 1 PDRIVE Internal P drive terminal to be connected to the gate of the outside power MOSFET. (The rising edge can be adjusted with an external resistor) 2 I SENSE MOSFET current sensing. Any voltage over 700 mv @ 25°C on this pin will stop gate pulses. 3 V CC IC positive supply. The chip behaves like a 9.5 volts zener diode. 4 R BIAS External R BIAS connection to set the operating frequency. 5 OVERV Over-voltage lock-out pin. @ 25°C a voltage over 4V on this pin will pull the MOSFET gate to GND. 6 OPTO Feedback input 7 GND Ground 8 NDRIVE Internal N drive terminal to be connected to the gate of the outside power MOSFET. (The falling edge can be adjusted with an external resistor) Downloaded from: http://www.datasheetcatalog.com/

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IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 4 / 15 AC 110V- IPS15 operations at medium load (5W) * IPS15 operations at heavy load (15W)* AC 250V - IPS15 operations at medium load (5W)* IPS15 operations at heavy load (15W)* * Together with a 1A, 600V MOSFET. OUTPUT POWER CAPABILITY Part Number Package 230V AC or 115V AC w/ Doubler 85 – 285V AC IPS15 DIP-8 / SOIC-8 Up to 70W (1) Up to 30W (1) Note (1): Governed by size and package of external MOSFET Vout Drain Isense Vout Isense Drain Vout Isense Drain Vout Isense Drain Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 5 / 15 ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATING Characteristics Value UNITS Shunt regulator max I CC (pin 3) - see fig 4- 50 mA All analog inputs (pin 2, 4, 5, 6) Min= -0.3, Max= +6.3V V Peak drive output current (pin1) Source=100, Sink=170 mA Junction to case thermal resistance R θ J-C PDIL = 42, SOIC = 45 Junction to PCB thermal resistance R θ J-A PDIL = 125, SOIC =155 °C / W Power dissipation for T A <= 70°C PDIL = 640, SOIC = 500 mW Operating junction temperature - 40 to 150 Storage temperature range - 55 to 150 Lead temperature (3 mm from case for 5 sec.) 260 °C PARAMETER TEST CONDITIONS PARAMETERS UNITS @ 25°C unless specified MIN. TYP. MAX. Supply, bias & circuit protection Shunt regulator voltage ICC = 1 to 30 mA 9.2 9.7 10.5 V Shunt regulator dynamic resistance (see Fig. 4) 1 to 30 mA 2 3 5 Ω Shunt regulator max peak repetitive current - 35 - mA Min I CC to start oscillator - - 140 μΑ Under voltage lock-out V CC – 2.2 V CC - 1.5 V CC - 1.4 V Min I CC to ensure continuous operation 1A, 600V, 5 nC MOSFET 1.1 @ 20KHz 3.2 @ 80KHz 4.9 @ 150KHz mA Current limiting sensing voltage 655 700 745 mV Temperature coefficient of current limiting - - 50 μ V/°C Overvoltage sensing voltage 3.85 4 4.15 V Soft/start duration 0 to 700mV - 20 - clock cycles Leading edge blanking 200 - 450 ns Thermal shutdown trip temperature - 150 - °C Oscillator & PWM Range of operating frequencies 30 80 150 KHz RBIAS values for above frequencies (see figure 2) 550 170 80 K Ω Oscillator stability with supply & temperature (see figure 3 for average) I CC = 5 mA Temp = 0 to 70°C -1.5 - 1.5 % Maximum duty cycle - 66 - % Minimum duty cycle - 0 - % Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 6 / 15 ELECTRICAL CHARACTERISTICS (cont’d) PARAMETER TEST CONDITIONS PARAMETERS UNITS @ 25°C unless specified MIN. TYP. MAX. Error amplifier Sensitivity in mV / % of PWM - 54 95 mV Voltage for max duty cycle OPTO pin - 4 - V Voltage for min duty cycle OPTO pin - 0.5 - V Input impedance OPTO pin - 60 - K Ω P & N Outputs to MOSFET gate P gate driver saturation 10 mA (source) - - 1 V N gate driver saturation 10 mA (sink) - - 0.6 V Gate pull-down resistor (internal) 280 400 520 K Ω PDRIVE Rise time (10% to 90%) 240 pF load - 250 - ns NDRIVE Fall time (10% to 90%) 240 pF load - 100 - ns Max recommanded total external MOSFET charge @ 20 KHz - - 100 nC “ @ 80 KHz - - 50 nC “ @ 150 KHz - - 15 nC Note: Electrical parameters, although guaranted, are not all 100% tested in production. Figure 2: Frequency vs Rbias 10 30 50 70 90 110 130 150 170 190 0 50 100 150 200 250 300 350 400 450 500 550 Rbias (k Ohm ) Frequency (kHz) Downloaded from: http://www.datasheetcatalog.com/

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IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 7 / 15 ORDERING INFORMATION Figure 4 Shunt regulator Icc current 0 10 20 30 40 50 0 2 4 6 8 10 12 14 Vcc (V) Icc (mA)- Figure 3 Frequency drift vs temperature -2.00 -1.00 0.00 1.00 2.00 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Frequency variation (%) ICC=5mA Part No. ROHS / Pb-Free Package Temperature Range IPS15C-D -G-LF 8-Pin PDIP 0 ° C to +70 ° C Commercial IPS15I-D -G-LF 8-Pin PDIP -40 ° C to +85 ° C Industrial IPS15C-SO -G-LF 8-Pin SOIC 0 ° C to +70 ° C Commercial IPS15I-SO -G-LF 8-Pin SOIC -40 ° C to +85 ° C Industrial For detailed ordering information, see page 14 Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 8 / 15 GOOD DESIGN PRACTICES IPS15 and loop stability: The IPS15 is intrinsically very fast and doesn’t participate to the loop stability. It only involves a comparator that doesn’t bring any gain and exhibits a negligible phase shift. It has been designed on purpose to allow its utilization in a large range of applications: (a) Operating at frequencies up to 200 kHz and even above, (b) Involving very different types of loop stability from "cycle skipping" where the loop is not compensated at all (figure 1), to good stability achieved through the utilization of a TL431 (figure 5) and finally superior transient response when using the IPS25 feedback controller (figure 6). The loop compensation is entirely achieved on the load side and the feedback is performed by an optocoupler which gain and dynamic response play an important role in the loop stability. Precaution in selecting the optocoupler: The optocoupler must be using a Phototransistor and NOT a Photodarlington. Most optocouplers of this type are offered in a wide range of coupling efficiency, also called transfer ratio. Even the cheapest ones have a guaranteed transfer ratio of the order of 100% meaning that 1mA of current in the IR LED creates approximately 1mA of current in the receiving phototransistor. The user should be able to design the loop to be stable even though the actual transfer ratio differs by more than a factor of 3 (example from 100% to 300% or 50% to 150%). Unfortunately optocouplers were not designed for low-current applications and this results in very bad speed and saturation characteristics for the phototransistor which could become incredibly slow and create severe loop stability problems should it be allowed to saturate hard in the application (the optocoupler could cause the IPS15 to skip cycles due to the long time required by the opto transistor to go out of saturation). In the example of figure 5, the output voltage is 10 volts as defined by R15 and R16 and 2.5V at the Pin #1 of the TL431. The cathode of the TL431 can go to a voltage as low as 2 Volts. The IR LED requires approximately 1 Volt which means that the voltage drop across R14 could be up to 6 volts resulting in a maximum current of 700uA. This value is plentiful for the utilization of a broad range of optocouplers and yet small enough to avoid hard saturation. Loop stability with the TL431: The TL431 has an enormous DC gain and will not ensure stability unless specific loop-compensation components such as a RC network are added as indicated below. The RC network should have a cut-off frequency at 100Hz to roll-off the gain at low frequencies but reach a plateau around 100Hz and have enough AC gain at twice the line frequency and achieve a good line ripple rejection. This is achieved by the loop compensation network C7, R17 of figure 5. The gain rolls off until the impedance of C7 reaches the value of R7. At much higher frequencies, the gain continue to roll-off due to the natural frequency response of the TL431. The goal is to reach a very low gain at the switching frequency. If the addition of C7 & R17 with values as shown results in gain is too low, the values of R15 & R16 should be reduced in proportion to lower the impedance at Pin #1 of TL 431. Alternately, if the gain is too high the values of R17 should be reduced and C7 re-adjusted accordingly to maintain the required cut-off frequency. Criteria to calculate the network : 1) R17 must be much higher than the input resistance of TL431 constituted by R16//R15=5K ﾆ 68Kohm OK. 2) F=100Hz=1/(2 x 3.14 x R17 x C7) gives approximately 22,000 pF for C7. Discontinuous operation: Check discontinuous mode of operation of the transformer (see application note AN-IPS02 page 2 for details) to ensure that the Flyback SMPS is indeed operating in discontinuous mode in the entire range of Input Voltages and Output Current. The response of the SMPS drastically changes in continuous mode, it gets considerably slower which requires a totally different loop compensation technique. Remember that it is very difficult to ensure loop Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 9 / 15 stability with a simple schematic when the SMPS is allowed to transition between Discontinuous and Continuous modes. MOSFET driver protection: The MOSFET driver has been sized to be capable of driving power MOSFETs featuring a total gate charge up to 100nC. The MOSFET should be turned-on relatively slowly and turned-off much faster. As shown below, these 2 parameters can be independently adjusted through the external resistors R10 (pin1) and R10A (pin8). The minimum value of these resistors should be 50 Ω in order to reduce EMI and minimize the noise injection which could result from Miller-capacitance kick-back during transient conditions. See application note AN-IPS-02 for EMI reduction techniques. APPLICATION 2 : AC IN 85-260V, 5 – 10W OUTPUT, voltage regulation with TL431. Figure 5 APPLICATION 2 : AC IN 85-260V, 0 – 5W OUTPUT, current & voltage regulation with IPS25. Figure 6 Q1 NMOSFET 1A, 600V U2 OPTO Q817C R14 4.7K D2 D3 2 x 1N4148 R4 2.2 SMT R3 1K 1/2W C4 120pF 600V R5 330k SMT 3 1 4 2 BR1 BRIDGE OUT+ OUT- SecondaryGND PrimaryGND R2A 430k SMT 90V-270V AC Snubber Network Patented TX1 EI/EE FERRITE Noise-Canceling Type LP=1.5mH LS=1.5microH + C6 470uF 16V + C3 10uF 16V + C1 4.7uF 400V D3 Schottky 1A - 60V L1 330uH + C2 4.7uF 400V R2 390k SMT R10 4.3k SMT R10A 1.5k SMT R11 100k SMT R12 10Meg 1/4W C1 220pF SMT REF 1 K 3 A 2 U3 TL431 R15 10k R16 10k OUTPUT C7 R17 Loop Compensation PDRV 1 ISENSE 2 VCC 3 RBIAS 4 NDRV 8 GND 7 OPTO 6 OVRV 5 U4 IPS15 R15 and R16 to be adjusted according to output voltage INPUT R4 controls max pick current when the ISENSE pin voltage exceeds ~700 mv R11 and R12 to be adjusted for max line overvoltage protection Q1 NMOSFET 1A, 600V U3 OPTOCOUPLER D1 D2 2 x 1N4148 R4 1.5 R3 1K 1/2W C4 120pF 600V 3 1 4 2 BR1 BRIDGE OUT+ OUT- SecondaryGND R2A 430k SMT 90V-270V AC Snubber Network Patented TX1 EI/EE FERRITE 13mm Noise-Canceling Type LP=1.5mH, LS=1.5microH + C5 100uF 16V 105°C + C3 10uF 16V + C1 4.7uF 400V D3 Schottky 1A - 60V L1 330uH + C2 4.7uF 400V R2 390k R6 23.7k 1% R7 25.5k 1% OUTPUT INPUT R8 3.3 VCC 1 VSENSE 2 VCOMP 3 OPTO 4 ISENSE 8 N/C 7 ICOMP 6 GND 5 U2 IPS25 R9 30k C9 0.068uF C8 0.068uF R1 10k + C6 470uF 16V 105°C C10 220pF R5 330k PrimaryGND R10 4.3k R10A 1.5k R11 100k R12 10Meg 1/4W PDRV 1 ISENSE 2 VCC 3 RBIAS 4 NDRV 8 GND 7 OPTO 6 OVRV 5 U1 IPS15 C1 220pF Downloaded from: http://www.datasheetcatalog.com/

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IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 10 / 15 OUTPUT CORD SERIAL RESISTANCE COMPENSATION WITH THE IPS25 FEEDBACK CONTROLLER Figure 7 The voltage drop due to the output serial resistance of the cord can be compensated by adding a voltage positive feedback to the IPS25 input pin VSENSE, proportional to Vdrop. This can be achieved either by splitting R8 (output current sensing resistor) in two or by inserting 2 serial resistors R13 and R14 in parallel to R8 and connect the positive feedback to the intermediate node. R13 and R14 should be calculated, based on the following conditions: - (R13 + R14) ≥ 20 x R8 (but should remain low impedance in regards to R7), - Vint ~ Vdrop, where Vint is the intermediate voltage measured on the common node of R13 and R14, and Vdrop is the voltage drop across the cord serial resistor. SMPS with output cord Q1 NMOSFET 1A, 600V U3 OPTOCOUPLER D1 D2 2 x 1N4148 R4 1.5 R3 1K 1/2W C4 120pF 600V 3 1 4 2 BR1 BRIDGE To cord (+) To cord (-) SecondaryGND R2A 430k SMT 90V-270V AC Snubber Network Patented TX1 EI/EE FERRITE 13mm Noise-Canceling Type LP=1.5mH, LS=1.5microH + C5 100uF 16V 105°C + C3 10uF 16V + C1 4.7uF 400V D3 Schottky 1A - 60V L1 330uH + C2 4.7uF 400V R2 390k R6 23.7k 1% R7 25.5k 1% OUTPUT INPUT R8 3.3 VCC 1 VSENSE 2 VCOMP 3 OPTO 4 ISENSE 8 N/C 7 ICOMP 6 GND 5 U2 IPS25 R9 30k C9 0.068uF R1 10k + C6 470uF 16V 105°C C10 220pF R5 330k PrimaryGND R10 4.3k R10A 1.5k R11 100k R12 10Meg 1/4W PDRV 1 ISENSE 2 VCC 3 RBIAS 4 NDRV 8 GND 7 OPTO 6 OVRV 5 U1 IPS15 C1 220pF R13 R14 C8 0.068uF Positive feed-back for cord serial resistance compensation Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 11 / 15 ADDITIONAL RECOMMENDATIONS : For best results in low power off-line SMPSs with the IPS15 , the following MOSFET features are recommended: - Low gate charge (max 50 nC). - 400 V breakdown voltage for domestic use (USA / Japan). - 600V breakdown voltage for European use (800V when transformer leakage inductance is very small). - 1, 2 or 3A depending on the maximum output power. Examples of suitable MOSFETS: - IXYS PolarHT ™ and Polar HV ™ MOSFET series: IXTY1R4N60P, IXTY2N60P, IXTY3N60P - Fairchild MOSFET series: FQPF1N60, FQPF 2N60, FQPF 3N60. - Infineon COOLMOS TM series: SPD01N60S5, SPD02N60S5, SPD03N60S5. - Motorola MOSFET series: MTP1N60, MTP2N60, MTP3N60. - SGS-Thomson MOSFET series: STD1NB60, STD2NB60, STD3NB60. - Etc… Notes: - Due to the rapid evolution of MOSFET technologies, please check for current models when designing a new SMPS. - PolarHT ™ and Polar HV ™ are trademarks of IXYS corporation - COOLMOS TM is a trademark of Infineon. TRANSFORMER CHARACTERISTICS : (a) Transformer design: E-core with suitable gap to prevent saturation or distributed-gap toroid. Primary inductance of 1.5 mH is very typical. Turn ratio = 9 for 220V input or universal 85V – 265V. Turn ratio = 7 for 100-120V AC input (Japan and USA) (b) Transformer phasing: Check the phase as indicated in figure 1 , 5 and 6 . Also refer to application notes AN-IPS-01 and AN-IPS-02. SNUBBER NETWORK : With reference to figure 1, R2 provide the start-up current for the chip. C3 is being charged through R2. Once the chip supply voltage is high enough, the gate drive starts and the chip is then powered by the modified snubber network patented by our company. The snubber values may have to be optimized for different specific operating conditions: - R3 could be reduced to 100 ohms and sometimes eliminated. - C4 could be increased to 200pF and sometimes more. Depending on the characteristics of the transformer, essentially leakage inductance and distributed capacitance, the snubber network shown in figure 1, may not be efficient enough to reduce the voltage spikes when operating at 20W or above. Please refer to applications notes AN-IPS-01 and AN-IPS-02 design tips or EMI reduction techniques, or feel free to contact our technical support for assistance. Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 12 / 15 POWER SHUT-DOWN SOLUTIONS for STAND-BY REQUIREMENTS : For low-power stand-by requirements, the primary circuitry can be shut-down by pulling the IPS15 VCC pin “LOW” through a 100 Ω resistor. This can be easily done using a: • Simple switch • PNP transistor • NPN transistor SHUT-DOWN SOLUTIONS Figure 6 Solution 1: simple switch, close = off 100 Ω resistor mandatory Solution 2: PNP transistor, low = off (low = less than 4V) 100 Ω resistor optional Solution 3: NPN transistor, high = off 100 Ω resistor optional close = off 100 Ω 100 Ω low = off high = off 100 Ω When the "LOW" state is released, the VCC is naturally re-established, re-activating the IPS15. Q1 NMOSFET 1A, 600V U2 OPTO-NPN R6 100 D2 1N4148 D3 1N4148 R4 1.2 R3 470 1/2W C4 100pF 1KV 3 1 4 2 BR1 BRIDGE L1 4.2 uH OUT+ OUT- SecondaryGND PrimaryGND R2 820k 110V AC Snubber Network Patented TR1 TRANSF-1P1S LP=1.5mH, LS=1.5microH + C5 470uF 16V + C6 220uF 16V + C3 22uF 16V + C1 10uF 250V D4 Zener 9.2V D1 Schottky 5A - 60V R5 330k R1 4.3k R1A 1.5k R8 100k R7 10Meg 1/4W PDRV 1 ISENSE 2 VCC 3 RBIAS 4 NDRV 8 GND 7 OPTO 6 OVRV 5 U1 IPS15 C2 220pF SHUT-DOWN SOLUTIONS 1,2 or 3 Downloaded from: http://www.datasheetcatalog.com/

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IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 14 / 15 ORDERING INFORMATION Part-Number Example of Marking (Note : For production with a new date code, since January 2006, the package type does not appear anymore on package marking) This ordering information is for commercial and industrial standard IN-PLUG ® controllers ONLY. For custom controllers or for automotive and military temperature ranges, call AAI’s sales representative. IN-PLUG ® Controller Series Flyback Feedback PFC Push-Pull LED Driver Controller Type Flyback: 10 series Feedback: 20 series PFC: 100 series Push-Pull: 200 series LED Driver: 400 series “H” with hiccup overload protection ROHS + Pb-Free Tape and Reel TR : Tape & Reel TU : Tube Note1 : Default or not specified is « tube ». Note2 : Does not appear on package marking. Temperature Range C : Commercial (0, +70°C) I : Industrial (-40°C. +85°C) Note : Default or not specified is <commercial> Package Type D : DIP8 SO : SOIC8 (For production with a new date code, after January 2006, the package type will not appear anymore on package marking) IPS XXXH C – YY – G-LF - TR Non-Green Package Green ROHS + Pb-Free Package AAI G-LF IPS15HC YYWW AAI IPS15HC YYWW Downloaded from: http://www.datasheetcatalog.com/

IN-PLUG ® IPS15 Datasheet – Rev.12 - Low cost, High Efficiency, Low Power off-line Switcher © Copyright 2003-2007 - ASIC Advantage, Inc. – All rights reserved - Revision 12 – April 02, 2007 15 / 15 The following is a brief overview of certain terms and conditions of sale of product. For a full and complete copy of all the General Terms and Conditions of Sale, visit our webpage http://www.asicadvantage.com/terms.htm. LIMITED WARRANTY The product is warranted that it will conform to the applicable specifications and be free of defects for one year. Buyer is responsible for selection of, use of and results obtained from use of the product. Buyer indemnifies and holds ASIC Advantage, Inc. harmless for claims arising out of the application of ASIC Advantage, Inc.’s products to Buyer’s designs. Applications described herein or in any catalogs, advertisements or other documents are for illustrative purposes only. CRITICAL APPLICATIONS Products are not authorized for use in critical applications including aerospace and life support applications. Use of products in these applications is fully at the risk of the Buyer. Critical applications include any system or device whose failure to perform can result in significant injury to the user. LETHAL VOLTAGES Lethal voltages could be present in the applications. Please comply with all applicable safety regulations. INTELLECTUAL PROPERTY RIGHTS AND PROPRIETARY DATA ASIC Advantage, Inc. retains all intellectual property rights in the products. Sale of products does not confer on Buyer any license to the intellectual property. ASIC Advantage, Inc. reserves the right to make changes without notice to the products at any time. Buyer agrees not to use or disclose ASIC Advantage Inc.’s proprietary information without written consent. TRADEMARKS AND PATENTS - IN-PLUG ® is a registered trademark of ASIC Advantage, Inc. - AAI’s modified snubber network is patented under the US Patent # 6,233,165. IN-PLUG ® Customers are granted a royalty-free licence for its utilization, provision the parts are purchased factory direct or from an authorized agent. PROTECTION FOR CUSTOM IN-PLUG ® SOLUTIONS When AAI accepts to design and manufacture IN-PLUG ® products to Buyer’s designs or specifications, buyer has certain obligations to provide defense in a suit or proceeding claiming infringement of a patent, copyright or trademark or for misappropriation of use of any trade secrets or for unfair competition. COMPLIANCE WITH LAWS Buyer agrees that at all times it will comply with all applicable federal, state, municipal, and local laws, orders and regulations. Buyer agrees to comply with all applicable restrictions on exports and re-exports including obtaining any required U.S. Government license, authorization, or approval. Buyer shall pay any duties, levies, taxes, brokerage fees, or customs fees imposed on the products. TITLE AND DELIVERY All shipments of goods shall be delivered ExWorks, Sunnyvale, CA, U.S.A. Title in the goods shall not pass to Buyer until ASIC Advantage, Inc. has received in full all amounts owed by Buyer. LATEST DATASHEET UPDATES For the latest datasheet updates, visit our web page: http://www.in-plug.com/datasheets.htm. WORLDWIDE REPRESENTATIVES To access AAI’s list of worldwide representatives , visit our web page http://www.in-plug.com/representatives.htm COPYRIGHTS Copyrights and all other proprietary rights in the Content rests with ASIC Advantage Inc. (AAI) or its licensors. All rights in the Content not expressly granted herein are reserved. Except as otherwise provided, the Content published on this document may be reproduced or distributed in unmodified form for personal non-commercial use only. Any other use of the Content, including without limitation distribution, reproduction, modification, display or transmission without the prior written consent of AAI is strictly prohibited. All copyright and other proprietary notices shall be retained on all reproductions. ASIC Advantage INC . 1290-B Reamwood Ave, Sunnyvale California 94089, USA Tel: (1) 408-541-8686 Fax: (1) 408-541-8675 Websites: http://www.in-plug.com - http://www.asicadvantage.com Downloaded from: http://www.datasheetcatalog.com/

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This datasheet has been downloaded from: www.DatasheetCatalog.com Datasheets for electronic components. Downloaded from: http://www.datasheetcatalog.com/