AN - EVAL IC E3AR228 0 VJZ 2 0 W 5 V SMPS Eva lua ti on Board wi th IC E3AR2280VJZ Application Note About this document Scope and purpose This document is an engineering report that describes universal input 20 W 5 V off-line flyback converter using Infineon CoolSET™ F3R80 family, ICE3AR2280VJZ. The converter is operated in Discontinuous Conduction Mode, 100 kHz fixed frequency, very low standby power and various mode of protections for a high reliable system. This evaluation board is designed to evaluate the performance of ICE3AR2280VJZ in ease of use. Intended audience This document is intended for users of the ICE3AR2280VJZ who wish to design low cost and high reliable systems of off-line SMPS for enclosed adapter or open frame auxiliary power supply of white goods, PC, server, DVD, TV, Set-top box, etc. Table of Contents About this document ................................................................................................................... 1 Table of Contents ........................................................................................................................ 1 1 Abstract ..................................................................................................................... 3 2 Evaluation board ........................................................................................................ 3 3 Specifications of evaluation board ................................................................................ 4 4 Features of ICE3AR2280VJZ .......................................................................................... 4 5 5.1 5.2 5.3 5.4 5.5 5.6 Circuit description....................................................................................................... 5 Introduction ............................................................................................................................................... 5 Line input ................................................................................................................................................... 5 Line input over voltage protection .......................................................................................................... 5 Start up ....................................................................................................................................................... 5 Operation mode ........................................................................................................................................ 5 Soft start ..................................................................................................................................................... 5 1 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Abstract 5.7 5.8 5.9 RCD clamper circuit................................................................................................................................... 5 Peak current control of primary current................................................................................................. 6 Output stage .............................................................................................................................................. 6 6 Circuit diagram ........................................................................................................... 7 7 7.1 7.2 PCB layout ................................................................................................................. 8 Top side ...................................................................................................................................................... 8 Bottom side................................................................................................................................................ 8 8 Bill of material (BOM) .................................................................................................. 9 9 Transformer construction .......................................................................................... 11 10 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 Test results .............................................................................................................. 12 Efficiency, regulation and output ripple ...............................................................................................12 Standby power ........................................................................................................................................13 Line regulation.........................................................................................................................................14 Load regulation .......................................................................................................................................14 Maximum power......................................................................................................................................15 ESD immunity (EN61000-4-2) .................................................................................................................15 Surge immunity (EN61000-4-5)..............................................................................................................15 Conducted emissions (EN55022 class B) ..............................................................................................16 Thermal measurement ...........................................................................................................................18 11 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 11.10 11.11 11.12 Waveforms and scope plots ........................................................................................ 19 Startup at low/high AC line input voltage with maximum load .........................................................19 Soft start ...................................................................................................................................................19 Frequency jittering ..................................................................................................................................20 Drain and current sense voltage at maximum load ............................................................................20 Load transient response (Dynamic load from 10% to 100%) .............................................................21 Output ripple voltage at maximum load ..............................................................................................21 Output ripple voltage during burst mode at 1 W load ........................................................................22 Active Burst mode operation .................................................................................................................22 VCC over voltage protection (Odd skip auto restart mode) .................................................................23 Over load protection (Auto restart mode) ............................................................................................23 VCC under voltage/Short optocoupler protection (Normal auto restart mode) ................................24 AC Line input OVP mode .........................................................................................................................24 12 References ............................................................................................................... 25 Revision History........................................................................................................................ 25 Application Note 2 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Abstract 1 Abstract This document is an engineering report of a universal input 20 W 5 V off-line flyback converter power supply utilizing F3R80 CoolSET™ ICE3AR2280VJZ. The application evaluation board is operated in Discontinuous Conduction Mode (DCM) and is running at 100 kHz switching frequency. It has a single output voltage with secondary side control regulation. It is especially suitable for small power supply such as DVD player, set-top box, game console, charger and auxiliary power of white goods, server, PC and high power system, etc. The ICE3AR2280VJZ is the latest version of the CoolSET™. Besides having the basic features of the F3R CoolSET™ such as Active Burst Mode, propagation delay compensation, soft gate drive, auto restart protection for major fault (VCC over voltage, VCC under voltage, adjustable input OVP, over temperature, over-load, open loop and short opto-coupler), it also has the BiCMOS technology design, selectable entry and exit burst mode level, adjustable AC line input over voltage protection feature, built-in soft start time, built-in and extendable blanking time and frequency jitter feature, etc. The particular features are the Best-in-Class low standby power and the good EMI performance. 2 Evaluation board This document contains the list of features, the power supply specification, schematic, bill of material and the transformer construction documentation. Typical operating characteristics such as performance curve and scope waveforms are showed at the rear of the report. Figure 1 EVAL ICE3AR2280VJZ Application Note 3 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Specifications of evaluation board 3 Table 1 Specifications of evaluation board Specifications of EVAL ICE3AR2280VJZ Input voltage 85 VAC~265 VAC Input frequency 50~60 Hz Output voltage 5V Output current 4A Output power 20 W Steady state output ripple voltage (±1% of norminal output voltage) Vripple_P_P< 50 mV Dynamic load response undershoot and overshoot (±3% of norminal output voltage) Vripple_P_P< 200 mV Active mode four point average efficiency (25%,50%,75% and 100%load) (EU CoC Version 5, Tier 1) Active mode at 10% load efficiency (EU CoC Version 5, Tier 1) >82% at 115 VAC and 230 VAC >74% No-load power consumption (EU CoC Version 5, Tier 2) < 75 mW Maximum input power(Peak Power) for universal input range (<±5% of average maximum input power) <±3% of average maximum input power Form factor case size (L x W x H) 90 mm x 60 mm x 35 mm (3.54" x 2.36" x 1.37") 4 Table 2 Features of ICE3AR2280VJZ Features of ICE3AR2280VJZ 800 V avalanche rugged CoolSET™ with startup cell Active Burst Mode for lowest standby power Selectable entry and exit burst mode level 100kHz internally fixed switching frequency with jittering feature Auto restart protection for over load, open Loop, VCC under voltage and over voltage and over temperature Over temperature protection with 50 °C hysteresis Built-in 10 ms soft start Built-in 20 ms and extendable blanking time for short duration peak power Propagation delay compensation for both maximum load and burst mode Adjustable input OVP Overall tolerance of current limiting < ±5% BiCMOS technology for low power consumption and wide VCC voltage range Soft gate drive with 50 Ω turn-on resistor Application Note 4 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Circuit description 5 Circuit description 5.1 Introduction The EVAL ICE3AR2280VJZ evaluation board is a low cost off-line flyback switch mode power supply (SMPS) using the ICE3AR2280VJZ integrated power IC from the CoolSET™-F3R80 family. The circuit shown in Figure 2 details a 5 V, 20 W power supply that operates from an AC line input voltage range of 85 VAC to 265 VAC and line input OVP detect/reset voltage is 300/282 VAC, suitable for applications in enclosed adapter or open frame auxiliary power supply for different system such as white goods, PC, server, DVD, LED TV, Set-top box, etc. 5.2 Line input The AC line input side comprises the input fuse F1 as over-current protection. The choke L1, X-capacitors C1, C2 and Y-capacitor C16 act as EMI suppressors. Optional spark gap device SG1, SG2 and varistor VAR can absorb high voltage stress during lightning surge test. After the bridge rectifier BR1 and the input bulk capacitor C3, a voltage of 90 to 424 VDC is present which depends on input line voltage. 5.3 Line input over voltage protection The AC line input OVP mode is detected by sensing the voltage level at BV pin through the resistors divider from the bulk capacitor. Once the voltage level at BV pin hits above 1.98V, the controller stops switching and enters into input OVP mode. When the BV voltage drops to 1.91V and the Vcc hits 17V, the input OVP mode is released. 5.4 Start up Since there is a built-in startup cell in the ICE3AR2280VJZ, no external start up resistor is required. The startup cell is connecting the drain pin of the IC. Once the voltage is built up at the Drain pin of the ICE3AR2280VJZ, the startup cell will charge up the VCC capacitor C11 and C7. When the VCC voltage exceeds the UVLO at 17 V, the IC starts up. Then the VCC voltage is bootstrapped by the auxiliary winding to sustain the operation. 5.5 Operation mode During operation, the VCC pin is supplied via a separate transformer winding with associated rectification D5 and buffering C11 and C7.In order not to exceed the maximum voltage at VCC pin due to poor coupling of transformer winding, an external zener diode ZD1 and resistor R8 can be added. 5.6 Soft start The soft start is a built-in function and is set at 10ms. 5.7 RCD clamper circuit While turns off the CoolMOS™, the clamper circuit R21, C14 ,R16 and D1 absorbs the current caused by transformer leakage inductance once the voltage exceeds clamp capacitor voltage. Finally drain to source voltage of CoolMOS™ is lower than maximum break down voltage (V(BR)DSS = 800 V) of CoolMOS™. Application Note 5 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Circuit description 5.8 Peak current control of primary current The CoolMOS™ drain source current is sensed via external shunt resistors R1 and R2 which determine the tolerance of the current limit control. Since ICE3AR2280VJZ is a current mode controller, it would have a cycle-by-cycle primary current and feedback voltage control which can make sure the maximum power of the converter is controlled in every switching cycle. Besides, the patented propagation delay compensation is implemented to ensure the maximum input power can be controlled in an even tighter manner. The evaluation board shows approximately +/-2.43% of average maximum input power (refer to Figure 11). 5.9 Output stage On the secondary side the power is coupled out by a schottky diode D3. The capacitor C8, C9, C21 provides energy buffering following with the LC filter L2 and C18 to reduce the output voltage ripple considerably. Storage capacitors C8, C9, C21 are selected to have a very small internal resistance (ESR) to minimize the output voltage ripple. Application Note 6 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Circuit diagram 6 Circuit diagram Figure 2 Schematic of EVAL ICE3AR2280VJZ Application Note 7 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ PCB layout Note: In order to get the optimized performance of the CoolSET™, the grounding of the PCB layout must be connected very carefully. From the circuit diagram above, it indicates that the grounding for the CoolSET™ can be split into several groups; signal ground, VCC ground, Current sense resistor ground and EMI return ground. All the split grounds should be connected to the bulk capacitor ground separately. Signal ground includes all small signal grounds connecting to the CoolSET™ GND pin such as filter capacitor ground C7, C6, C5 and opto-coupler ground. VCC ground includes the VCC capacitor ground C11 and the auxiliary winding ground, pin 2 of the power transformer. Current Sense resistor ground includes current sense resistor R1 and R2. EMI return ground includes Y capacitor C16. 7 PCB layout 7.1 Top side Figure 3 Top side component legend 7.2 Bottom side Figure 4 Bottom side copper and component legend Application Note 8 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Bill of material (BOM) 8 Bill of material (BOM) Table 3 Bill of materials No. Designator Component Description Footprint Part Number Manufacturer 1 JP1,JP2 5V Test point Connector 691101710002 Wurth Electronics 2 2 BR1 600V/2A KBPM 3N257-M4 Vishay 1 3 C1 MKT/220nF/3 05V L*W*H: 12.5*7*18P15mm B32922C3224M Epcos 1 4 C2 MKT /100nF/305V L*W*H: 12.5*5*18P15mm B32921C3104M Epcos 1 5 C3 82uF/450V Φ*H :18*30P7.5mm 450TXW82MEF R18x30 Rubycon 1 6 C5 220nF/25V 0603 1 7 C6 1nF/25V 0603 1 8 C7 100nF/50V 0603 1 9 C11 22uF/35V Φ*H :5*11P2.5mm 35PX22MEFC5x 11 Rubycon 1 10 C14 MKT /2.2nF/630V L*W*H: 12.5*7.3*6.5P5mm B32529C8222J 000 Epcos 1 11 C16 Y1/2.2nF/400 V L*W*H: 9*5*10P10mm 1 12 C19 1nF/1KV 1206 1 13 C8 ,C9,C21 1000uF/16V Φ*H :10*20P5mm 14 C10 1000uF/16V Φ*H :8*11.5P3.5mm 1 15 C17,C18,C2 0 100nF/16V 1206 3 16 C12 470pF 0805 1 17 C13 100nF /16V 0805 1 18 R3 3M/ 1/4W DIP-P10mm 1 19 R4,R5 3.1M 1206 2 20 R6 43.2K 1206 1 21 R1 1.5R 1206 1 22 R2 2R 1206 1 23 R21 4.7R 1206 1 24 R7 2R 0805 1 Application Note 16ZL1000MEFC 10x20 9 Rubycon Quantity 3 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Bill of material (BOM) 25 R8 4.99R 0805 1 26 R16 92K/1W DIP-P10mm 1 27 R18 20.1R 1206 1 28 R9 20K 0805 1 29 R10 0R 0805 1 30 R12 20K 0805 1 31 R15 40.2K 0805 1 32 R14 1.1K 0805 1 33 R13 221R 0805 1 34 F1 2A/250V Φ*H：8.5*7.5P5mm 1 35 VAR1 VR /S07K460 L*W*H: 9*5.7*11.5P5mm B72207S461K1 01 Epcos 1 36 L1 CM_Choke2* 18mH/1a L*W*H: 21.46*17*22.6 750342630 Wurth Electronics 1 37 IC1 ICE3AR2280V JZ DIP-8 ICE3AR2280VJ Z Infineon 1 38 ZD1 20V Zener Diode SOD-123 39 IC2 SFH617-3 DIP-4 SFH617-3 1 40 IC3 AZ431 SOT-23 AZ431 1 41 TR1 410uH(54:4:1 1) TR_EF20/10/6_H _10Pin 750342625 42 D1 UF4007 DO-41 UF4007 43 D5 1N485B 0.2A/200V DO-35 44 D3 SG30SC4M TO-220FB SG30SC4M Shindengen 1 45 L2 Sleeve Choke DIP-P5 742700221 Wurth Electronics 1 46 J1,J3 Jumper DIP-P10mm 2 47 J2 Jumper DIP-P15mm 1 48 J4 0R 1206 1 49 HS1 50 NTC Application Note 1 Wurth Electronics 1 1 1 1 Jumper DIP-P5mm 1 10 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Transformer construction 9 Transformer construction Core and material: EE20/10/6(EF20), TP4A (TDG) Bobbin: 070-4989 (10-Pins, TH-H, Horizontal version) Primary Inductance, LP=410 µH (±5%), measured between pin 4 and pin 5 Manufacturer and part number: Wurth Electronics Midcom (750342625) The bottom side of the core above the secondary side pins should be taped with 3 layers isolation tapes. Figure 5 Start Stop No. of turns Wire size Layer 4 6, 7 1 3 9, 10 2 26 4 11 1 X TIW Ø0.25mm 4 X TIW Ø0.4mm 1 X TIW Ø0.2mm ½ Primary Secondary Auxiliary 3 5 28 1 X TIW Ø0.25mm ½ Primary Transformer structure Application Note 11 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Test results 10 Test results 10.1 Efficiency, regulation and output ripple Table 4 Vin (VAC) 85 115 230 265 Figure 6 Efficiency, regulation and output ripple Pin (W) Vout (VDC) Iout (A) Vout_ripple_pk_pk (mV) Pout (W) η (%) 0.0230 5.01 0.00 24.30 2.5100 5.01 0.40 6.0360 5.01 1.00 10.90 2.00 79.78 10.20 5.01 12.1800 5.00 82.92 2.00 17.30 10.01 82.21 18.4200 24.9800 5.00 3.00 30.00 15.01 81.51 5.00 4.00 34.00 20.02 80.15 0.0260 5.01 0.00 25.00 2.5200 5.01 0.40 13.40 2.00 79.46 6.0300 5.01 1.00 12.80 5.01 83.00 12.0300 5.00 2.00 14.70 10.01 83.23 18.1200 5.00 3.00 28.00 15.01 82.86 24.4500 5.00 4.00 32.00 20.02 81.87 0.0470 5.01 0.00 26.20 2.6800 5.01 0.40 12.20 2.00 74.72 6.1670 5.01 1.00 13.40 5.01 81.24 12.0260 5.00 2.00 16.30 10.01 83.26 17.9200 5.00 3.00 22.80 15.01 83.78 24.0120 5.00 4.00 30.40 20.02 83.36 0.0560 5.01 0.00 26.20 2.7600 5.01 0.40 11.50 2.00 72.55 6.2440 5.01 1.00 13.50 5.01 80.24 12.1130 5.00 2.00 16.01 10.01 82.66 17.9940 5.00 3.00 20.03 15.01 83.44 24.0220 5.00 4.00 30.00 20.02 83.33 Average η (%) OLP Pin (W) OLP Iout (A) 32.57 5.12 33.10 5.34 34.00 5.62 34.19 5.67 81.70 82.74 82.91 82.42 Efficiency vs AC line input voltage Application Note 12 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Test results Figure 7 Efficiency vs output power @ 115 VAC and 230 VAC line 10.2 Standby power Figure 8 Standby power @ no load vs AC line input voltage (measured by Yokogawa WT210 power meter - integration mode) Application Note 13 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Test results 10.3 Line regulation Figure 9 Line regulation Vout @ full load vs AC line input voltage 10.4 Load regulation Figure 10 Load regulation Vout vs output power Application Note 14 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Test results 10.5 Maximum power Figure 11 Maximum input power (before over-load protection) vs AC line input voltage 10.6 ESD immunity (EN61000-4-2) Pass [level 3 (±6 kV) for contact discharge]. Pass [special level (±12 kV) for contact discharge by adding SG1 and SG2 (RLS302-301M)]. 10.7 Surge immunity (EN61000-4-5) Pass [Installation class 3, 2 kV (line to earth) and 1 kV (line to line)]. Pass [Installation class 4, 4 kV (line to earth) and 2 kV (line to line) by adding SG1 and SG2 (RLS302-301M)]. Application Note 15 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Test results 10.8 Conducted emissions (EN55022 class B) The conducted EMI was measured by Schaffner (SMR25503) and followed the test standard of EN55022 (CISPR 22) class B. The evaluation board was set up at maximum load (20 W) with input voltage of 115 VAC and 230 VAC. Figure 12 Conducted emissions(Line) at 115 VAC and maximum Load Figure 13 Conducted emissions(Neutral) at 115 VAC and maximum Load Application Note 16 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Test results Figure 14 Conducted emissions(line) at 230 VAC and maximum Load Figure 15 Conducted emissions(Neutral) at 230 VAC and maximum Load Pass conducted EMI EN55022 (CISPR 22) class B with > 6 dB margin for QP. Application Note 17 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ 10.9 Thermal measurement The thermal test of open frame evaluation board was done using an infrared thermography camera (TVS500EX) at ambient temperature 25 ⁰C. The measurements were taken after two hours running at full load. Table 5 Hottest temperature of evaluation board No. Item Temperature @ Temperature @ 85 VAC and FL(°C) 115 VAC and FL(°C) Temperature @ 230 VAC and FL(°C) 1 IC1 (ICE3AR2280VJZ) 83.5 68.5 62.3 62.9 2 BR1 47.5 41.7 35.0 33.8 3 R16 58.8 56.9 54.2 53.8 4 TR1 59.1 59.1 59.4 60 5 D3 62.8 63.0 64.1 64.6 6 Ambient temperature 25 25 25 Temperature @ 265 VAC and FL(°C) 25 85 VAC, 20 W load, 25 ⁰C ambient 115 VAC, 20 W load, 25 ⁰C ambient 230 VAC, 20 W load, 25 ⁰C ambient 265 VAC, 20 W load, 25 ⁰C ambient Figure 16 Infrared thermal image of EVAL ICE3AR2280VJZ Application Note 18 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Waveforms and scope plots 11 Waveforms and scope plots All waveforms and scope plots were recorded with a LeCroy 6050 oscilloscope 11.1 Startup at low/high AC line input voltage with maximum load 397 ms 397 ms Entry/exit burst selection Entry/exit burst selection Channel 1; C1(Yellow) : Drain voltage (VDrain) Channel 1; C1(Yellow) : Drain voltage (VDrain) Channel 2; C2( Red): Supply voltage (VCC) Channel 2; C2( Red): Supply voltage (VCC) Channel 3; C3(Blue) : Feedback voltage (VFBB) Channel 3; C3(Blue) : Feedback voltage (VFBB) Channel 4; C4(Green) :BV voltage (VBV) Channel 4; C4(Green) :BV voltage (VBV) Startup time @ 85 VAC & max. load = 397 ms Startup time @ 265 VAC & max. load = 397 ms Figure 17 Startup 11.2 Soft start 10 ms Channel 1; C1 : Current sense voltage (VCS) Channel 2; C2 : Supply voltage (VCC) Channel 3; C3 : Feedback voltage (VFBB) Channel 4; C4 : Zero crossing voltage (VBV) Soft Star time @ 85 VAC & max. load = 10 ms Figure 18 Soft start Application Note 19 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Waveforms and scope plots 11.3 Frequency jittering 3.7 ms Channel 1; C1(Yellow) : Drain voltage (VDrain) Channel F1 : Frequency track of C1 Frequency jittering from 96 kHz ~ 104 kHz, Jitter period is set at 3.7 ms internally Figure 19 Frequency jittering@ 85 VAC and max. load 11.4 Drain and current sense voltage at maximum load Channel 1; C1 : Drain-source voltage (VDS) Channel 1; C1 : Drain-source voltage (VDS) Channel 2; C2 : Current sense voltage (VCS) Channel 2; C2 : Current sense voltage (VCS) VDrain_peak @ 85 VAC = 294 V VDrain_peak @ 265 VAC = 602 V Figure 20 Drain and current sense voltage at max. load Application Note 20 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Waveforms and scope plots 11.5 Load transient response (Dynamic load from 10% to 100%) Channel 1; C1 : Output ripple voltage (Vout) Channel 1; C1 : Output ripple voltage (Vout) Channel 2; C2 : Output current (Iout) Channel 2; C2 : Output current (Iout) Vripple_pk_pk @ 85 VAC =190 mV (Load change from10% to 100%,100 Hz,0.4 A/μS slew rate) Vripple_pk_pk @ 26 5VAC =190 mV (Load change from10% to 100%,100 Hz,0.4 A/μS slew rate) Probe terminal end with decoupling capacitor of 0.1 μF(ceramic) and 1 μF(Electrolytic), 20 MHz filter Probe terminal end with decoupling capacitor of 0.1 μF(ceramic) and 1 μF(Electrolytic), 20 MHz filter Figure 21 Load transient response 11.6 Output ripple voltage at maximum load Channel 1; C1 : Output ripple voltage (Vout) Channel 1; C1 : Output ripple voltage (Vout) Channel 2; C2 : Output current (Iout) Channel 2; C2 : Output current (Iout) Vripple_pk_pk @ 85 VAC =35 mV Vripple_pk_pk @ 265 VAC = 30 mV Probe terminal end with decoupling capacitor of 0.1 μF(ceramic) and 1 μF(Electrolytic), 20 MHz filter Probe terminal end with decoupling capacitor of 0.1 μF(ceramic) and 1 μF(Electrolytic), 20 MHz filter Figure 22 AC output ripple at max. load Application Note 21 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Waveforms and scope plots 11.7 Output ripple voltage during burst mode at 1 W load Channel 1; C1 : Output ripple voltage (Vout) Channel 1; C1 : Output ripple voltage (Vout) Channel 2; C2 : Output current (Iout) Channel 2; C2 : Output current (Iout) Vripple_pk_pk @ 85 VAC =39 mV Vripple_pk_pk @ 265 VAC = 39 mV Probe terminal end with decoupling capacitor of 0.1 μF(ceramic) and 1 μF(Electrolytic), 20 MHz filter Probe terminal end with decoupling capacitor of 0.1 μF(ceramic) and 1 μF(Electrolytic), 20 MHz filter Figure 23 AC output ripple at 1 W load 11.8 Active Burst mode operation Channel 1; C1 : Current sense voltage (VCS) Channel 1; C1 : Current sense voltage (VCS) Channel 2; C2 : Supply voltage (VCC) Channel 2; C2 : Supply voltage (VCC) Channel 3; C3 : Feedback voltage (VFBB) Channel 3; C3 : Feedback voltage (VFBB) Channel 4; C4 :BV voltage (VBV) Condition to enter burst: VFB<1.42 V and last for 20 ms (load change form full load to 1 W load) Figure 24 Active burst mode at 85 VAC Application Note Channel 4; C4 :BV voltage (VBV) Condition to leave burst: VFB>4.5 V (load change form 1 W load to full load) 22 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ Waveforms and scope plots 11.9 VCC over voltage protection (Odd skip auto restart mode) VCC OVP2 VCC OVP1 Channel 1; C1 : Drain voltage (VDrain) Channel 2; C2 : Supply voltage (VCC) Channel 3; C3 : Feedback voltage (VFBB) Channel 4; C4 : BV voltage (VBV) Condition: VCC>25.5 V VCC>20.5 V and VFB>4.5 V and during soft start (Short the diode of optocoupler(Pin 1 and 2 of IC2) during system operating at no load) Figure 25 VCC overvoltage protection at 85 VAC 11.10 Over load protection (Auto restart mode) built-in 20ms blanking extended blanking Channel 1; C1(Yellow) : Drain voltage (VDrain) Channel 2; C2( Red): Supply voltage (VCC) Channel 3; C3(Blue) : Feedback voltage (VFBB) Channel 4; C4(Green) :BV voltage (VBV) Condition: VFB>4.5 V and last for 20 ms andVBV>4.5 V and last for 30 µs (output load change from 4 Ato 6 A) Figure 26 Over load protection with built-in+extended blanking time at 85 VAC Application Note 23 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ 11.11 VCC under voltage/Short optocoupler protection (Normal auto restart mode) Exit autorestart Enter autorestart Channel 1; C1(Yellow) : Drain voltage (VDrain) Channel 2; C2( Red): Supply voltage (VCC) Channel 3; C3(Blue) : Feedback voltage (VFBB) Channel 4; C4(Green) :BV voltage (VBV) Condition: VCC<10.5 V (short the transistor of optocoupler(Pin 3 and 4 of IC2) during system operating @ full load and release) Figure 27 VCC under voltage/short optocoupler protection at 85 VAC 11.12 AC Line input OVP mode Enter input OVP Exit input OVP Enter input OVP Exit input OVP Channel 1; C1(Yellow) : Bulk voltage(Vbulk) Channel 1; C1(Yellow) : Bulk voltage(Vbulk) Channel 2; C2(Red) : Supply voltage (VCC) Channel 2; C2(Red) : Supply voltage (VCC) Channel 3; C3(Blue : Current sense voltage (VCS) Channel 3; C3(Blue : Current sense voltage (VCS) Channel 4; C4 (Green): BV voltage (VBV) Channel 4; C4 (Green): BV voltage (VBV) Max. load condition: VBV>1.98 V and last for 400 µs (OVP detect) VBV<1.91 V and last for 5 µs (OVP reset) (gradually increase AC line voltage until OVP detect and decrease AC line until OVP reset) No load condition: VBV>1.98 V and last for 400 µs (OVP detect) VBV<1.91 V and last for 5 µs (OVP reset) (gradually increase AC line voltage until OVP detect and decrease AC line until OVP reset) Figure 28 Input OVP Application Note 24 Revision 1.2, 2015-05-12 20 W 5 V SMPS Evaluation Board with ICE3AR2280VJZ References 12 References [1] Infineon Technologies, Datasheet “CoolSET™-F3R80 ICE3AR2280VJZ Off-Line SMPS Current Mode Controller with integrated 800V CoolMOS™and Startup cell( input OVP and Frequency Jitter) in DIP-7” [2] Infineon Technologies, AN-PS0044-CoolSET F3R80 DIP-7 brownout/input OVP and frequency jitter version design guide-V1.5 Revision History Major changes since the last revision Page or Reference 5 Application Note Description of change Add section 5.3 under circuit description 25 Revision 1.2, 2015-05-12 Trademarks of Infineon Technologies AG AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, CoolMOS™, CoolSET™, CORECONTROL™, CROSSAVE™, DAVE™, DI-POL™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPIM™, EconoPACK™, EiceDRIVER™, eupec™, FCOS™, HITFET™, HybridPACK™, I²RF™, ISOFACE™, IsoPACK™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OptiMOS™, ORIGA™, POWERCODE™, PRIMARION™, PrimePACK™, PrimeSTACK™, PRO-SIL™, PROFET™, RASIC™, ReverSave™, SatRIC™, SIEGET™, SINDRION™, SIPMOS™, SmartLEWIS™, SOLID FLASH™, TEMPFET™, thinQ!™, TRENCHSTOP™, TriCore™. Other Trademarks Advance Design System™ (ADS) of Agilent Technologies, AMBA™, ARM™, MULTI-ICE™, KEIL™, PRIMECELL™, REALVIEW™, THUMB™, µVision™ of ARM Limited, UK. AUTOSAR™ is licensed by AUTOSAR development partnership. Bluetooth™ of Bluetooth SIG Inc. CAT-iq™ of DECT Forum. COLOSSUS™, FirstGPS™ of Trimble Navigation Ltd. EMV™ of EMVCo, LLC (Visa Holdings Inc.). EPCOS™ of Epcos AG. FLEXGO™ of Microsoft Corporation. FlexRay™ is licensed by FlexRay Consortium. HYPERTERMINAL™ of Hilgraeve Incorporated. IEC™ of Commission Electrotechnique Internationale. IrDA™ of Infrared Data Association Corporation. ISO™ of INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. MATLAB™ of MathWorks, Inc. MAXIM™ of Ma xim Integrated Products, Inc. MICROTEC™, NUCLEUS™ of Mentor Graphics Corporation. MIPI™ of MIPI Alliance, Inc. MIPS™ of MIPS Technologies, I nc., USA. muRata™ of MURATA MANUFACTURING CO., MICROWAVE OFFICE™ (MWO) of Applied Wave Research Inc., OmniVision™ of OmniVision Technologies, Inc. Openwave™ Openwave Systems Inc. RED HAT™ Red Hat, Inc. RFMD™ RF Micro Devices, Inc. SIRIUS™ of Sirius Satellite Radio Inc. SOLARIS™ of Sun Microsystems, Inc. SPANSION™ of Spansion LLC Ltd. Symbian™ of Symbian Software Limited. TAIYO YUDEN™ of Taiyo Yuden Co. TEAKLITE™ of CEVA, Inc. TEKTRONIX™ of Tektronix Inc. TOKO™ of TOKO KABUSHIKI KAISHA TA. UNIX™ of X/Open Company Limited. VERILOG™, PALLADIUM™ of Cade nce Design Systems, Inc. VLYNQ™ of Texas Instruments Incorporated. VXWORKS™, WIND RIVER™ of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited. Last Trademarks Update 2011-11-11 www.infineon.com Edition 2015-05-12 Published by Infineon Technologies AG 81726 Munich, Germany © 2015 Infineon Technologies AG. All Rights Reserved. Do you have a question about any aspect of this document? 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