Texas Instruments UCC28742EVM-001 User Manual Download Page 1

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Using the UCC28742EVM-001 10-W Converter

User's Guide

Literature Number: SLUUBU4B

March 2018 – Revised June 2018

Summary of Contents for UCC28742EVM-001

Page 1: ...Using the UCC28742EVM 001 10 W Converter User s Guide Literature Number SLUUBU4B March 2018 Revised June 2018 ...

Page 2: ...s interface electronics are energized indicating operation of accessible high voltages may be present for the purpose of protecting inadvertent access 4 All interface circuits power supplies evaluation modules instruments meters scopes and other related apparatus used in a development environment exceeding 50Vrms 75VDC must be electrically located within a protected Emergency Power Off EPO protect...

Page 3: ... 001 10 W Converter 1 Description The UCC28742EVM 001 is a 10 W evaluation module for evaluating an off line power converter applications The EVM meets CoC tier 2 and DoE Level 6 efficiency and standby power requirements It is intended for evaluation purposes and is not intended to be an end product The UCC28742EVM 001 converters 85 VRMS to 265 VRMS input voltage down to 5 VDC with a 2 1 A current...

Page 4: ...Input voltage RMS 85 115 230 265 V fLINE Line frequency 47 50 60 63 Hz PSTBY No load input power VIN 115 V 230 V RMS IOUT 0 A 75 mW OUTPUT CHARACTERISTICS VOUT Output voltage VIN nom IOUT nom 4 75 5 25 V VOUT Output ripple voltage VIN nom IOUT max 50 mVpp IOUT Output current VIN min to max 2 2 05 A Over Current Shut Down VIN min to max 2 1 A Load step 0 A to 0 5 A 4 1 6 V SYSTEMS CHARACTERISTICS η...

Page 5: ...Schematic 5 SLUUBU4B March 2018 Revised June 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated Using the UCC28742EVM 001 10 W Converter 3 Schematic Figure 2 UCC28742EVM 001 Schematic ...

Page 6: ...he proper safety of handling and testing power electronics please do not test this evaluation module Voltage Source Isolated AC source or variable AC transformer capable of 265 VAC cable of handling 10 W Voltmeter Digital voltage meter Power Analyzer Capable of measuring 1 mW to 10 W of input power and capable of handling 265 V RMS input voltage Some power analyzers may require a precision shunt r...

Page 7: ...VOUT Output supply TP4 VOUT Output return 6 Performance Data and Typical Characteristic Curves 6 1 Efficiency Table 3 Efficiency Test Data VIN RMS VOUT IOUT PIN EFFICIENCY 115 V 5 018 V 0 000 A 0 055 W N A 115 V 5 017 V 0 201 A 1 268 W 79 5 115 V 5 015 V 0 501 A 3 072 W 81 8 115 V 5 014 V 1 002 A 6 124 W 82 0 115 V 5 013 V 1 500 A 9 183 W 81 9 115 V 5 011 V 2 004 A 12 244 W 82 0 230 V 5 019 V 0 00...

Page 8: ...N 85V RMS RLOAD 2 5 ohm Performance Data and Typical Characteristic Curves www ti com 8 SLUUBU4B March 2018 Revised June 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated Using the UCC28742EVM 001 10 W Converter 6 2 Startup CH1 Aux D4 Anode CH2 VOUT CH3 VRCS R16 CH4 VIN C1 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 ...

Page 9: ...nd Typical Characteristic Curves 9 SLUUBU4B March 2018 Revised June 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated Using the UCC28742EVM 001 10 W Converter Figure 11 Figure 12 6 3 Load Transients CH1 Aux D4 Anode CH2 VOUT CH3 VRCS R16 CH4 IOUT Load 0 100A to 2 A 50 Hz 50 Duty Cycle Figure 13 Figure 14 Figure 15 Figure 16 ...

Page 10: ...acteristic Curves www ti com 10 SLUUBU4B March 2018 Revised June 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated Using the UCC28742EVM 001 10 W Converter 6 4 Output Ripple Voltage at Full Load Figure 17 IOUT 2A Figure 18 IOUT 2 A 6 5 Q1 Drain Voltage Evaluation Figure 19 IOUT 2A ...

Page 11: ...ack Copyright 2018 Texas Instruments Incorporated Using the UCC28742EVM 001 10 W Converter 6 6 Conducted EMI Figure 20 VIN 115 VRMS Load 2 5 Ω Figure 21 VIN 230 VRMS Load 2 5 Ω NOTE Please note this was evaluated on an unqualified EMI station It is recommended that all final designs be verified by agency qualified EMI test house ...

Page 12: ...c Table 4 Transformer Specifications PARAMETER PINS LEADS TEST CONDITIONS VALUE D C resistance 1 2 At 20ºC 0 56 Ω 10 D C resistance 3 4 At 20ºC 0 157 Ω 10 D C resistance FL1 FL2 At 20ºC 0 012 Ω 20 D C resistance 3 5 At 20ºC 0 142 Ω 10 D C resistance 2 6 At 20ºC 0 845 Ω 10 Inductance 1 6 10 kHz 100 mV Ls 750 µH 10 Saturation current 1 6 20 rolloff from initial 800 mA Leakage inductance 1 6 tie FL1 ...

Page 13: ...ulated Ns2 4 turns 25 AWG Triple Insulated Wound Bifilar Single Layer FL1 FL2 Clockwise 3 Counter Clockwise Np 2 26 Turns 34 AWG 20 Turns on one layer and 6 on the next 6 Clockwise Pin Pin Start Winding Finish Winding Winding Direction Transformer Outer Core www ti com Transformer Details 13 SLUUBU4B March 2018 Revised June 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorp...

Page 14: ...B March 2018 Revised June 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated Using the UCC28742EVM 001 10 W Converter 8 EVM Assembly and Layout Figure 24 EVM Assembly Top View Figure 25 EVM Assembly Layout Bottom View ...

Page 15: ...al block 5 08 mm 2x1 TH 1715721 Phoenix Contact 2 JAUX JPGND Jumper wire 500mil spacing green pkg of 200 923345 05 C 3M 1 JPGND2 Jumper wire 400 mil spacing yellow pkg of 200 923345 04 C 3M 1 L1 Inductor wirewound ferrite 470 µH 0 5 A 1 3 ohm TH RLB0914 471KL Bourns 2 L2 L3 Ferrite bead 300 Ω at 100 MHz 3 A 1206 742792121 Wurth Elektronik 1 Q1 MOSFET N channel 600 V 5 A IPAK STU7NM60N STMicroelect...

Page 16: ...TH 5011 Keystone 1 U1 High Efficiency Low Cost Flyback Controller with Secondary Side Regulation DBV0006A SOT 23 6 UCC28742DBVR Texas Instruments 1 U2 Optocoupler 5 kV 50 600 CTR TH LTV 817 Lite On 1 U3 Precision programmable reference DBZ0003A TL431AIDBZ Texas Instruments 0 C4 Capacitor ceramic 100 pF 50 V 5 C0G NP0 0805 08055A101JAT2A AVX 0 C9 Capacitor ceramic 27 pF 50 V 5 C0G NP0 0603 06035A27...

Page 17: ...y set forth above 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 warr...

Page 18: ...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 détachables Conformément à la réglementation d Industrie Canada le présent émetteur radio peut fo...

Page 19: ...ed 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 ...

Page 20: ...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 TWELVE 12 MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED 8 2 Specif...

Page 21: ... TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD PARTY IS GRANTED HEREIN including but not limited to any patent right copyright mask work right or other intellectual property right relating to any combination machine or process in which TI product...

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