Using the UCC24630EVM-636 User's Guide Literature Number: SLUUB81A February 2015 - Revised March 2015 User's Guide SLUUB81A - February 2015 - Revised March 2015 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter 1 Introduction The UCC24630EVM-636 evaluation module is a 65-W off-line flyback converter providing 19.5 V at 3.33-A maximum load current, operating from a universal AC input. The module is controlled by the LM5023 ACto-DC Quasi-Resonant Current Mode PWM Controller on the primary side. Secondary-side synchronous rectification is controlled by the UCC24630 controller. The UCC24630 uses a V/s balancing control method since the device is not directly connected to the MOSFET drain. The gate output duty cycle is dependent upon the system line and load conditions, as well as the minimum on time and off times. This innovative approach results in efficiency, reliability and system cost improvements over a conventional flyback. 2 Description This evaluation module uses the UCC24630 synchronous rectifier controller in a 65-W flyback converter that exceeds US and European agency standards for efficiency during active load and no-load power consumption for low-voltage AC-to-DC external power supplies. The input accepts a voltage range of 85 VAC to 265 VAC. The output voltage provides a regulated output voltage of 19.5 VDC at a load current of up to 3.33 A. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure Critical Conduction Mode (CrCM) operation. The LM5023 features a hiccup mode for over current protection with an auto restart to reduce the stress on the power components during an overload. A skipcycle mode helps reduce power consumption at light loads for energy conservation applications. The LM5023 also uses the transformer auxiliary winding for output overvoltage (OVP) protection. If an OVP fault is detected the LM5023 latches off the power supply. The UCC24630 uses a V/s balancing control method since the device is not directly connected to the MOSFET drain. The has a programmable false triggering filter, a frequency detector to automatically switch to standby mode and pin fault protections. This User's Guide provides the schematic, component list, assembly drawing, art work and test set up necessary to evaluate the UCC24630 in a typical offline flyback converter application. 2 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Description www.ti.com 2.1 Applications The UCC24630 is suited for use in isolated off-line systems requiring high efficiency, low standby power and advanced protection features including: * USB Compliant Adapters and Chargers for Consumer Electronics (smart phones, tablets, cameras) * Standby Supply for TV and Desktop * Battery Chargers * Power Supply for DVD Players, Set-Top Box, Gaming, Printers 2.2 Features The UCC24630EVM-636 features include: * Isolated 19.5-V, 65-W output. * Universal offline input voltage range. * Meets requirements for average load efficiency and no load power consumption of US DOE Standard for External Power Supplies. * Meets requirements for average and 10% load efficiency and no-load power consumption of EC Code of Conduct on Energy Efficiency of External Power Supplies (Version 5) Tier 2. * Line Brown out protection, using external circuitry * EN55022 Class B EMI Compliance. CAUTION High voltage levels are present on the evaluation module whenever it is energized. Proper precautions must be taken when working with the EVM. The large bulk capacitors, C2 and C3, and the output capacitors, C7, C8 and C9, must be completely discharged before the EVM can be handled. Serious injury can occur if proper safety precautions are not followed. SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 3 Electrical Performance Specifications 3 www.ti.com Electrical Performance Specifications Table 1. UCC24630EVM-636 Performance Specifications PARAMETER TEST CONDITIONS MIN NOM MAX UNITS Input Characteristics VIN Input voltage fLINE Frequency VIN(uvlo) Brownout voltage VIN(ov) Brownout recovery voltage IIN Input current 90 115/230 265 V 47 50/60 64 Hz IOUT = INOM VIN = VMIN, IOUT = max 80 V 90 V 1.65 A Output Characteristics VOUT Output voltage VIN = VMIN to VMAX, IOUT = 0 to INOM IOUT(nom) Nominal output current VIN = VMIN to VMAX IOUT(min) Minimum output current VIN = VMIN to VMAX VOUT Output voltage ripple VIN = VMIN to VMAX, IOUT = 0 to INOM POUT Output power VIN = VMIN to VMAX 18.5 19.5 20.5 3.33 V A 0 A 500 mV 65 System Characteristics avg Average efficiency VIN = VNOM, IOUT = 25%, 50%, 75%, 100% of IOUT(nom) 89% 90% 10% 10% load efficiency VIN = VNOM, IOUT = 10% of IOUT(nom) 79% 82% PNL No load power VIN = VNOM, IOUT = 0 60 75 mW Environmental Conducted EMI Meets CISPR22B/EN55022B MECHANICAL W L H 4 Width DIMENSIONS Length Component height Using the UCC24630EVM-636 65-W, AC-to-DC Adapter 3.5 in 5 in 1.25 in SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Schematic www.ti.com 4 Schematic 4 3 2 ~ 3 2 2 ~ 2 3 1 2 4 3 3 3 1 2 Figure 1. UCC24630EVM-636 Schematic SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 5 Circuit Description 5 www.ti.com Circuit Description The input EMI filter is made up of X capacitor C1, common mode inductor L1 and differential inductor L2, and Y capacitor C19. Excessive surge voltage protection is provided by varistor V1 and input current protection is provided by fuse F1. Diode bridge D1, input capacitors C2, C3, transformer T1, MOSFET Q3, LM5023 controller and current sense resistors R11, R11 form the input power stage of the converter. R3, C4 and D2 make up the primary-side clamp for MOSFET Q3. The clamp prevents the drain voltage from exceeding its maximum rating. R5 and depletion mode MOSFET Q2 supply start up bias current to U1 and charge up bias capacitors C13, C14 and C15. After reaching the VCC(on) threshold the LM5023VSD open-drain output (which is pulled up to VCC during start up) goes low. This applies a negative gate to source voltage to Q2 turning it off. This disables the high-voltage startup circuit. Voltage supervisor device U5 is used to accurately set the turn-on voltage of the power supply. The output of U5 is high until the voltage on its input exceeds 3 V. This pulls the SS pin on LM5023 low (through Q4 and Q5) and disables startup of the power supply until the input voltage is about 90 VAC . The LM5023 is thereby enabled and the OUT drive signal starts switching Q3. Energy is stored and then transferred from the transformer primary to the secondary windings. A bias winding (pins 1 and 2 of T1) delivers energy U1 and maintains the voltage on the VCC pin above its undervoltage lockout (UVLO) value. Further details on the operation can be found in the LM5023. UCC24630 controller U2 drives the synchronous rectification (SR) MOSFET Q1. The control method to determine SR on time is based on the V/s balance principle of primary and secondary conduction V/s product. This evaluation module (EVM) operates in either Discontinuous Conduction Mode (DCM) or Transition Mode (TM) and the secondary current always returns to zero in each cycle. The inductor charge voltage time product is equal to the discharge voltage time product. The device uses internal ramp emulators to predict the correct SR on time based on voltage and time information on the VPC and VSC pins. R19 is used to set the blanking time of the VPC rising edge and determines the minimum primary on-time required to enable the DRV output on each cycle. This prevents triggering of the SR turn on due to ringing of the MOSFET drain after the SR turn off edge. R17 and R18 program a voltage controlled current source for the internal ramp charging current. This is used to determine the conduction time for Q1. R15 and R16 determine the primary-side V/s during Q3 on time. This is used to program a voltage controlled current source for the internal ramp charging current. Further details on the operation of the can be UCC24630 found in the data sheet. 6 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Test Equipment www.ti.com 6 Test Equipment AC Input Source: The input source shall be an isolated variable AC source capable of supplying between 90 VAC and 265 VAC at no less than 200 W and connected as shown in Figure 2 and Figure 3. For accurate efficiency calculations, a power meter should be inserted between the AC source and the EVM. Output Load: A programmable electronic load capable of sinking 0 A to 10 A shall be used. Power Meter: A power analyzer shall be capable of measuring low input current, typically less than 50 mA and a long averaging mode if low power standby mode input power measurements are to be taken. An example of such an analyzer is the Yokogawa WT210 Single Phase Power Analyzer. Multimeters: Two digital multimeters are used to measure the regulated output voltage (DMM V1) and load current (DMM A1). Oscilloscope: A digital or analog oscilloscope with 500-MHz scope probes is recommended. Fan: Forced air cooling is not required. Recommended Wire Gauge: A minimum of AWG #18 wire is recommended on the input. The wire connections between the AC source and the EVM, and the wire connections between the EVM and the load should be less than two feet long. WARNING High voltages that may cause injury exist on this evaluation module (EVM). Please ensure safety procedures are followed when working on this EVM. Never leave a powered EVM unattended. SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 7 Test Equipment 6.1 www.ti.com Recommended Test Set Up for Operation Without a Load Figure 2 shows the equipment set up when testing at no load. The power analyzer should be set for long averaging mode in order to include several cycles of operation and an appropriate current scale factor must be used. - V2 + V+ A+ L POWER ANALYSER J2 A- J1 V- AC V1 Figure 2. Recommended Test Set Up Without a Load 6.2 Recommended Test Set Up for Operation With a Load Oscilloscop e - V2 + - A1 + V+ A+ POWER ANALYSER A- J2 J1 - + LOAD V- V1 AC Figure 3. Recommended Test Set Up With a Load 8 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Test Equipment www.ti.com 6.3 List of Test Points Table 2. Test Point Functional Description TEST POINT 6.4 NAME DESCRIPTION TP1 LINE TP2 NEUTRAL High voltage line AC input TP3 VBULK TP4 MAG Auxiliary secondary voltage of main transformer TP5 DRV Synchronous rectifier gate drive voltage TP6 VSW Drain voltage of main FET High voltage neutral AC input Rectified input bulk voltage TP7 VOUT Main output voltage TP8,TP16 SGND Secondary ground TP9 VCC Bias voltage to primary-side controller TP10,TP11,TP15 GND Primary-side ground TP12 COMP TP13 DRV Compensation voltage to primary-side controller Gate drive to main FET Operation without a load 1. Use the test set up shown in Figure 2. (a) Set the power analyzer for long averaging time or integration mode (to include several cycles of operation) and the appropriate setup for measuring no-load power. (b) Allow the unit run at the line voltage where the no-load power is measured for ~5 minutes. 2. Monitor the input power and the output voltage while varying the input voltage. 3. Make sure the EVM is off and the bulk capacitors and output capacitors are completely discharged before handling the EVM. 6.5 Operation with a load 1. 2. 3. 4. 5. 6. Set up the EVM as shown in Figure 3. Vary the electronic load setting from 0-A to 3.34-A constant current. Set the AC source voltage between 90 VAC and 265 VAC. Monitor the output voltage on DMM V1. Monitor the output current on DMM A1. Monitor the input power. SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 9 Test Equipment 6.6 www.ti.com Efficiency Measurement Procedure NOTE: The test setup measures the output voltage at the EVM pins and so therefore does not account for cable losses. 1. Use the test set up shown in Figure 3. (a) Set the power analyzer to normal mode. (b) Set the AC source to a constant voltage between 90 VAC and 265 VAC. (c) Vary the load so that the output current varies from 0 A up to 3.34 A, as measured on DMM A1. (d) Observe that the output voltage on DMM V1 remains within 5% of the 19.5-V constant voltage regulation value. (e) Repeat the test at several line voltages. 6.7 Output Voltage Ripple An external 10-F aluminum capacitor in parallel with a 1-F ceramic noise decoupling capacitor network should be connected to the output to measure the output ripple and noise. The loop area between the scope probe tip and ground lead should be minimized for accurate ripple and noise measurements. 6.8 Equipment Shutdown 1. Discharge the output and bulk capacitors. 2. Turn off the AC source. 10 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Performance Data and Typical Characteristic Curves www.ti.com Performance Data and Typical Characteristic Curves 7.1 Efficiency Efficency (%) 7 100 98 96 94 92 90 88 86 84 82 80 78 76 74 72 70 115 VAC 230 VAC 6 12 18 24 30 36 42 Output Power (V) 48 54 60 66 D001 Figure 4. Efficiency Curves SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 11 Performance Data and Typical Characteristic Curves www.ti.com Table 3. Efficiency Data, VIN = 115 V VIN (VAC) PIN (W) VOUT (VDC) IOUT (A) POUT (W) 115 0.050 19.402 0.000 0.000 EFF (%) 0.00 5.643 19.399 0.250 4.850 85.94 11.120 19.394 0.506 9.813 88.25 16.290 19.390 0.746 14.465 88.80 21.510 19.388 1.001 19.407 90.22 26.720 19.383 1.256 24.345 91.11 31.670 19.380 1.498 29.031 91.67 36.900 19.376 1.753 33.966 92.05 42.170 19.373 2.008 38.901 92.25 47.100 19.370 2.249 43.563 92.49 52.400 19.367 2.504 48.495 92.55 57.690 19.363 2.758 53.403 92.57 62.640 19.360 3.000 58.080 92.72 67.960 19.357 3.253 62.968 92.65 70.160 19.355 3.357 64.975 92.61 EFF (%) Table 4. Efficiency Data, VIN = 230 V 12 VIN (VAC) PIN (W) VOUT (VDC) IOUT (A) POUT (W) 230 0.060 19.366 0.000 0.000 0.00 6.008 19.379 0.249 4.825 80.31 12.110 19.381 0.508 9.846 81.30 17.260 19.385 0.751 14.558 84.35 22.440 19.390 1.007 19.526 87.01 27.220 19.376 1.245 24.123 88.62 32.410 19.371 1.503 29.115 89.83 37.540 19.369 1.754 33.973 90.50 42.430 19.366 1.996 38.655 91.10 47.660 19.362 2.249 43.545 91.37 52.830 19.360 2.506 48.516 91.83 57.740 19.357 2.748 53.193 92.13 62.960 19.354 3.002 58.101 92.28 68.180 19.351 3.258 63.046 92.47 70.010 19.349 3.349 64.800 92.56 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Performance Data and Typical Characteristic Curves www.ti.com Table 5. Average Efficiency VIN (VAC) F (Hz) PIN (W) POUT (W) EFF (%) AVG EFF (%) 115 60 16.290 14.46 88.77 91.49 36.900 33.97 92.05 52.400 48.49 92.54 70.160 64.97 92.60 17.260 14.56 84.35 37.540 33.97 90.50 52.830 48.52 91.83 70.010 64.80 92.56 230 50 89.81 NOTE: The DOE specified lower limit is 88% for average efficiency and the EC CofC Tier 2 specified lower limit is 89%. Table 6. 10% Efficiency VIN (VAC) F (Hz) PIN (W) POUT (W) EFF (%) 120 60 8.011 6.66 83.14 230 50 8.048 6.62 82.24 NOTE: The EC CofC Tier 2 specified lower limit for 10% efficiency is 79%. Table 7. No-Load Power VIN (VAC) PIN(mW) VOUT (V) 115 51 19.380 230 59 19.375 NOTE: The EC CofC Tier 2 specified upper limit for maximum power in no load mode is 150 mW and the DOE specified limit is 210 mW. SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 13 Performance Data and Typical Characteristic Curves 7.2 www.ti.com Output Ripple Figure 5. Output Ripple and Noise (90 V/50 Hz, load = 65 W) Figure 6. Output Ripple and Noise (230 V/60 Hz, load = 65 W) 14 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Performance Data and Typical Characteristic Curves www.ti.com 7.3 Turn-On Waveform Figure 7. Turn-On Waveform (C4 = VIN, C3 = VOUT, 230 VAC, 65-W load) Figure 8. Turn-On Waveform (C4 = VIN, C3 = VOUT, 115 VAC, 65-W load) SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 15 Performance Data and Typical Characteristic Curves 7.4 www.ti.com Primary and Secondary Voltage Waveforms Figure 9. C1 = VSW, C2 = VDRV 115 V 65 W Figure 10. C1 = VSW, C2 = VDRV 230 V, 65 W 16 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Performance Data and Typical Characteristic Curves www.ti.com Figure 11. C1 = VSW, C2 = VDRV 115 V, 30 W Figure 12. C1 = VSW, C2 = VDRV 230 V, 30 W SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 17 Performance Data and Typical Characteristic Curves www.ti.com Figure 13. C1 = VSW, C2 = VDRV 115 V, 15 W Figure 14. C1 = VSW, C2 = VDRV 230 V, 15 W 18 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Performance Data and Typical Characteristic Curves www.ti.com 7.5 Synchronous Rectifier Drive and Primary Current Figure 15. C1 = V(R12), C2 = VDRV 115 V, 65 W Figure 16. C1 = V(R12), C2 = VDRV 230 V, 65 W SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 19 Performance Data and Typical Characteristic Curves 7.6 www.ti.com Secondary SR VDS Voltage and DRV Voltage Figure 17. C1 = V (T1 pin 8, pin 9 to SGND), C2 = VDRV 115 V, 65 W Figure 18. C1 = VPRI (drain), C2 = VDRV, 230 V, 6 W 20 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Performance Data and Typical Characteristic Curves www.ti.com Figure 19. C1 = VPRI (drain), C2 = VDRV, 230 V, 8 W Figure 20. C1 = VPRI (drain), C2 = VDRV, 230 V, 12 W SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 21 Performance Data and Typical Characteristic Curves www.ti.com Figure 21. C1 = VPRI (drain), C2 = VDRV, 230 V, 65 W 22 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Performance Data and Typical Characteristic Curves www.ti.com 7.7 Conducted Emissions Figure 22. 115 VAC, 65 W with RTN Tied to Earth Figure 23. 230 VAC, 65 W with RTN Tied to Earth SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 23 EVM Assembly Drawing and PCB layout 8 www.ti.com EVM Assembly Drawing and PCB layout The following figures (Figure 24 through Figure 25) show the design of the UCC28630EVM-572 printed circuit board. Figure 24. UCC24630EVM-636 Top Layer Assembly Drawing Figure 25. UCC24630EVM-636 Bottom Layer Assembly Drawing 24 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated EVM Assembly Drawing and PCB layout www.ti.com SGND Vout C9 T1 pins 8,9 C8 T1 pins 10,11 Figure 26. Layout SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 25 List of Materials www.ti.com 9 List of Materials 9.1 Flyback Transformer 9.1.1 * * * * * * * 9.1.2 Material List RM10/I core set - 3c95 413 nH aluminum CPV-RM10-1S-12PD coil former Furukawa TEX-E triple insulated wire or equivalent ECW 1-oz adhesive copper foil (66 m thick) Mylar tape Winding Table Table 8. Winding Table WINDING START PIN FINISH PIN DIRECTION TURNS W1 1 2 CW 2 0.2-mm ECW W2 4 5 CW 11 2 x 0.4-mm ECW W3 2 3 CW 2 0.2-mm ECW 1 1 turn of 1 Oz copper foil CW 4 4 strands of 0.5-mm TEX-E triple insulated wire 1 1 turn of 1-oz copper foil CW 11 2 x 0.4-mm ECW W4 W5 3 10, 11 8, 9 W6 W7 9.1.3 3 5 6 WIRE SIZE/TYPE Schematic 6 W2 5 10,11 W7 4 1 2 2 3 3 W5 W1 W3 W4, W6 8,9 1 Figure 27. Winding Schematic 26 Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated List of Materials www.ti.com 9.1.4 * * * * * * * * 9.1.5 * * * * * Winding and Assembly Instructions W1, bias winding, try to space evenly over bobbin, return at 90 to pin. Cover with one layer of tape. W2, first half pf primary winding, evenly over bobbin, return at 90 to pin. Cover with one layer of tape. W3, winding to develop voltage for W4 and W6 shields. Cover with a layer of tape. W4, copper foil shield (~9mm wide to fit). Start and end on primary side, ends should overlap slightly, with tape between them to prevent shorting. The midpoint of the shield should be connected to pin 3. W5, secondary winding, 4 strands of 0.5-mm TEX-E. Cover with a layer of tape. W6, same as W4. The midpoint of the shield should be connected to pin 3. W7, 2nd half of primary winding, evenly over bobbin, return at 90 to pin 5. Cover with two layers of tape. Copper foil shield around the assembled core connected to pin 2, cover with tape. Test Specifications Leakage inductance. Short secondary flying leads together. Measure inductance from pins 4-6. Inductance check: per table 5%. Polarity check: per Dot notation above. DCR: per table 5% Turns ratio check : - (W2+W7)/W5 = 5.5 - W5/W1 = 2 Table 9. Winding Inductance Measurements WINDING INDUCTANCE (kHz) W1 + W5 200 H 100 W3 100 W2 100 Primary-secondary leakage inductance 100 SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Using the UCC24630EVM-636 65-W, AC-to-DC Adapter Copyright (c) 2015, Texas Instruments Incorporated 27 List of Materials 9.2 www.ti.com Detailed List of Materials Table 10. List of Materials for UCC24630EVM-636 QTY 28 DESIGNA TOR DESCRIPTION MANUFACTURER PART NUMBER 1 C1 Capacitor, film, 0.33 F, 630 V, 20%, TH EPCOS Inc B32922C3334M 2 C2, C3 Capacitor, aluminum, 100 F, 400 V, 20%, TH Rubycon 400KXW100MEFC16X30 1 C4 Capacitor, ceramic, 470 pF, 630 V, 5%, C0G/NP0, 1206 TDK C3216C0G2J471J 1 C5 Capacitor, ceramic, 47 pF, 50 V, 5%, C0G/NP0, 0603 AVX 06035A470JAT2A 3 C6, C17, C18 Capacitor, ceramic, 0.01 F, 25 V, 5%, C0G/NP0, 0603 TDK C1608C0G1E103J 1 C7 Capacitor, ceramic, 10 F, 25 V, 20%, X7R, 1812 TDK C4532X7R1E106M 2 C8, C9 Capacitor, aluminum, 680 F, 25 V, 20%, 0.023 , TH Nippon Chemi-Con EKZE250ELL681MJ20S 1 C10 Capacitor, ceramic, 0.047 F, 25 V, 5%, X7R, 0603 AVX 06033C473JAT2A 1 C11 Capacitor, ceramic, 1000 pF, 50 V, 5%, C0G/NP0, 0402 MuRata GRM1555C1H102JA01D 1 C12 Capacitor, ceramic, 100 pF, 50 V, 5%, C0G/NP0, 0402 MuRata GRM1535C1H101JDD5D 1 C13 Capacitor, ceramic, 0.1 F, 50 V, 5%, X7R, 0805 AVX 08055C104JAT2A 1 C14 Capacitor, ceramic, 4.7 F, 25 V, 10%, X7R, 1206 TDK C3216X7R1E475K 1 C15 Capacitor, aluminum, 22 F, 25 V, 20%, TH Nichicon URZ1E220MDD1TD 1 C16 Capacitor, ceramic, 36 pF, 100 V, 5%, C0G/NP0, 0603 MuRata GRM1885C2A360JA01D 1 C19 Capacitor, ceramic, 2200 pF, 250 V, 20%, E, Radial D MuRata 8 mm x 5 mm DE2E3KY222MA2BM01 1 D1 Diode, switching-bridge, 800 V, 4 A, TH Vishay GBU4K-E3/45 1 D2 Diode, ultrafast, 600V, 1A, SMB Diodes Inc. MURS160-13-F 1 D3 Diode, Zener, 15 V, 500 mW, SOD-123 Diodes Inc. MMSZ5245B-7-F 1 D5 Diode, ultrafast, 100 V, 0.25 A, SOD-323 NXP BAS316,115 1 D6 Diode, ultrafast, 100 V, 0.15 A, SOD-123 Diodes Inc. 1N4148W-7-F 1 F1 Fuse, 3.15 A, 250 V, TH Littelfuse 39213150000 1 HS1 Heat sink, TO-220 vertical Aavid 7173DG 1 J1 AC receptacle, 2.5 A, R/A, TH Qualtek 770W-X2/10 1 J2 Terminal block, 2 x 1, 5.08 mm, TH FCI 20020110-H021A01LF 1 J3 Term block plug 2 pos 5.08 MM FCI 20020006-H021B01LF 1 L1 Coupled inductor, 4.5 mH, A, 0.05 , TH GCI G144083LF 1 L2 Inductor, toroid, 47.7 H, 7 A, 0.04 , TH GCI G144082LF 1 Q1 MOSFET, N-channel, 100V, 16 A, SON 5x6mm Texas Instruments CSD19531Q5A 1 Q2 MOSFET, N-channel, 600 V, 0.12 A, SOT-223 Infineon BSP135 L6433 1 Q3 MOSFET, N-channel, 650 V, 15 A, TO-220 FullPAK Infineon SPA15N65C3 2 Q4, Q5 MOSFET, N-channel, 60 V, 0.17 A, SOT-23 Diodes Inc. 2N7002-7-F Using the UCC24630EVM-636 65-W, AC-to-DC Adapter SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Revision History www.ti.com Table 10. List of Materials for UCC24630EVM-636 (continued) QTY DESIGNA TOR DESCRIPTION MANUFACTURER PART NUMBER 2 R1, R2 Resistor, 1.00 M, 1%, 0.25 W, 1206 Vishay-Dale CRCW12061M00FKEA 1 R3 Resistor, 100 k, 1%, 0.25 W, 1206 Vishay-Dale CRCW1206100KFKEA 1 R4 Resistor, 10.0 k, 0.5%, 0.1 W, 0603 Yageo America RT0603DRE0710KL 1 R5 Resistor, 10.0 k, 1%, 1 W, 2512 Vishay-Dale CRCW251210K0FKEG 1 R6 Resistor, 2.00 M, 1%, 0.25 W, 1206 Vishay-Dale CRCW12062M00FKEA 1 R7 Resistor, 100 , 1%, 0.125 W, 0805 Vishay-Dale CRCW0805100RFKEA 1 R8 Resistor, 4.7 , 5%, 0.25 W, 1206 Vishay-Dale CRCW12064R70JNEA 1 R9 Resistor, 47.0 , 1%, 0.25 W, 1206 Yageo America RC1206FR-0747RL 1 R10 Resistor, 2.2 k, 5%, 0.1 W, 0603 Vishay-Dale CRCW06032K20JNEA 1 R11 Resistor, 20.0 k, 1%, 0.1 W, 0603 Vishay-Dale CRCW060320K0FKEA 1 R12 Resistor, 0.15 , 1%, 0.5 W, 1210 Rohm MCR25JZHFLR150 1 R13 Resistor, 20.0 k, 1%, 0.125 W, 0805 Vishay-Dale CRCW080520K0FKEA 1 R14 Resistor, 5.1 k, 5%, 0.1 W, 0603 Vishay-Dale CRCW06035K10JNEA 1 R15 Resistor, 576 k, 1%, 0.125 W, 0805 Vishay-Dale CRCW0805576KFKEA 2 R16, R20 Resistor, 10.0 k, 1%, 0.1 W, 0603 Vishay-Dale CRCW060310K0FKEA 1 R17 Resistor, 590 k, 1%, 0.1 W, 0603 Vishay-Dale CRCW0603590KFKEA 1 R18 Resistor, 47 k, 5%, 0.1 W, 0603 Vishay-Dale CRCW060347K0JNEA 1 R19 Resistor, 18 k, 5%, 0.1 W, 0603 Vishay-Dale CRCW060318K0JNEA 2 R21, R26 Resistor, 0 , 5%, 0.1 W, 0603 Vishay-Dale CRCW06030000Z0EA 1 R22 Resistor, 10.2 k, 1%, 0.1 W, 0603 Vishay-Dale CRCW060310K2FKEA 1 R23 Resistor, 36.0 k, 1%, 0.1 W, 0603 Yageo America RC0603FR-0736KL 1 R24 Resistor, 1.50 , 1%, 0.1 W, 0603 Vishay-Dale CRCW06031R50FKEA 2 R25, R27 Resistor, 10 M, 5%, 0.25 W, 1206 Vishay-Dale CRCW120610M0JNEA 1 R28 Resistor, 5.1 M, 5%, 0.25 W, 1206 Vishay-Dale CRCW12065M10JNEA 0 R29 Resistor, 2.00 M, 1%, 0.1 W, 0603 Vishay CRCW06032M00FKEA 1 R30 Resistor, 115 k, 1%, 0.1 W, 0603 Vishay-Dale CRCW0603115KFKEA 1 R31 Resistor, 806 k, 1%, 0.1 W, 0603 Vishay-Dale CRCW0603806KFKEA 1 R32 Resistor, 1.15 M, 1%, 0.1 W, 0603 Vishay-Dale CRCW06031M15FKEA 1 T1 Transformer, 200 H, TH Wurth 750315092 1 U1 AC-DC Quasi-Resonant Current Mode PWM Controller Texas Instruments LM5023MMX-2/NOPB 1 U2 Syncronous Rectifier Controller Texas Instruments UCC24630DBV 1 U3 Low Input Current, Hight CTR Photocoupler CEL PS2811-1-M-A 1 U4 Low-Voltage (1.24 V) Adjustable Precision Shunt Regulator Texas Instruments LMV431BIMF 1 U5 Undervoltage Sensing Circuit Texas Instruments LM8364BALMF30 1 V1 Varistor, 430 V, 4.5KA, TH EPCOS Inc B72214S0271K101 Revision History Changes from Original (March, 2015) to A Revision ...................................................................................................... Page * Deleted PNL reference. .................................................................................................................... 4 NOTE: Page numbers for previous revisions may differ from page numbers in the current version. SLUUB81A - February 2015 - Revised March 2015 Submit Documentation Feedback Copyright (c) 2015, Texas Instruments Incorporated Revision History 29 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES 1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an "EVM" or "EVMs") to the User ("User") in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions. 1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For clarification, any software or software tools provided with the EVM ("Software") shall not be subject to the terms and conditions set forth herein but rather shall be subject to the applicable terms and conditions that accompany such Software 1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned, or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production system. 2 Limited Warranty and Related Remedies/Disclaimers: 2.1 These terms and conditions do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License Agreement. 2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM to User. Notwithstanding the foregoing, TI shall not be liable for any defects that are caused by neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have been altered or modified in any way by an entity other than TI. Moreover, TI shall not be liable for any defects that result from User's design, specifications or instructions for such EVMs. Testing and other quality control techniques are used to the extent TI deems necessary or as mandated by government requirements. TI does not test all parameters of each EVM. 2.3 If any EVM fails to conform to the warranty set forth above, TI's sole liability shall be at its option to repair or replace such EVM, or credit User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day warranty period. 3 Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter. 3.1.2 For EVMs annotated as FCC - FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant: CAUTION This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Interference Statement for Class A EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: * * * * Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. 3.2 Canada 3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 Concerning EVMs Including Radio Transmitters: This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Concernant les EVMs avec appareils radio: Le present appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisee aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioelectrique subi, meme si le brouillage est susceptible d'en compromettre le fonctionnement. Concerning EVMs Including Detachable Antennas: Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Concernant les EVMs avec antennes detachables Conformement a la reglementation d'Industrie Canada, le present emetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inferieur) approuve pour l'emetteur par Industrie Canada. Dans le but de reduire les risques de brouillage radioelectrique a l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnee equivalente (p.i.r.e.) ne depasse pas l'intensite necessaire a l'etablissement d'une communication satisfaisante. Le present emetteur radio a ete approuve par Industrie Canada pour fonctionner avec les types d'antenne enumeres dans le manuel d'usage et ayant un gain admissible maximal et l'impedance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est superieur au gain maximal indique, sont strictement interdits pour l'exploitation de l'emetteur 3.3 Japan 3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 3.3.2 Notice for Users of EVMs Considered "Radio Frequency Products" in Japan: EVMs entering Japan may not be certified by TI as conforming to Technical Regulations of Radio Law of Japan. If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required by Radio Law of Japan to follow the instructions below with respect to EVMs: 1. 2. 3. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry's Rule for Enforcement of Radio Law of Japan, Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to EVMs, or Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan. SPACER SPACER SPACER SPACER SPACER 1. 2. 3. 61118328173 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER 4 EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information related to, for example, temperatures and voltages. 4.3 Safety-Related Warnings and Restrictions: 4.3.1 User shall operate the EVM within TI's recommended specifications and environmental considerations stated in the user guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or property damage. If there are questions concerning performance ratings and specifications, User should contact a TI field representative prior to connecting interface electronics including input power and intended loads. Any loads applied outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit components may have elevated case temperatures. These components include but are not limited to linear regulators, switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the information in the associated documentation. When working with the EVM, please be aware that the EVM may become very warm. 4.3.2 EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems, and subsystems. User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees, affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or designees. 4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal, state, or local laws and regulations related to User's handling and use of the EVM and, if applicable, User assumes all responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local requirements. 5. Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as accurate, complete, reliable, current, or error-free. SPACER SPACER SPACER SPACER SPACER SPACER SPACER 6. Disclaimers: 6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY WRITTEN DESIGN MATERIALS PROVIDED WITH THE EVM (AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS. 6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS AND CONDITIONS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR IMPROVEMENT MADE, CONCEIVED OR ACQUIRED PRIOR TO OR AFTER DELIVERY OF THE EVM. 7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES, EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS AND CONDITIONS. THIS OBLIGATION SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED. 8. Limitations on Damages and Liability: 8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE, INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE TERMS ANDCONDITIONS OR THE USE OF THE EVMS PROVIDED HEREUNDER, REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF REMOVAL OR REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, RETESTING, OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, LOSS OF USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED. 8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY WARRANTY OR OTHER OBLIGATION ARISING OUT OF OR IN CONNECTION WITH THESE TERMS AND CONDITIONS, OR ANY USE OF ANY TI EVM PROVIDED HEREUNDER, EXCEED THE TOTAL AMOUNT PAID TO TI FOR THE PARTICULAR UNITS SOLD UNDER THESE TERMS AND CONDITIONS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED. THE EXISTENCE OF MORE THAN ONE CLAIM AGAINST THE PARTICULAR UNITS SOLD TO USER UNDER THESE TERMS AND CONDITIONS SHALL NOT ENLARGE OR EXTEND THIS LIMIT. 9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s) will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s), excluding any postage or packaging costs. 10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas, without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas. 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