UM10523 TEA1721 universal mains white goods flyback SMPS
Contents
1. R1 D1 J1 1 Bt if J2 1 R3 c3 o Es Wo BE 1 C6 C8 GND1 ZX03 3 f DRAIN ji D5 J2 2 GND2 R K 7 TEA172 ole C7 C9 1721 R7 f GND3 SOURCE Nos D6 Yo 4 4 4 CJ2 3 vec ji Ki I C4 C5 R2 C2 R5 J1 2 a tt al aaa 002241 Fig 6 TEA1721 white goods SMPS circuit diagram UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 9 of 14 UM10523 Universal mains white goods flyback SMPS demo board NXP Semiconductors 7 PCB components Table 2 Demo board components Reference Description and value Part number Manufacturer C1 electrolytic capacitor 2E pitch 4 7 uF 400 V C2 capacitor 10 pF 400 V 0805 C3 capacitor 220 pF 500 V 0805 C4 capacitor 1 uF 50 V 0805 C5 electrolytic capacitor 1E pitch 10 uF 35 V C6 electrolytic capacitor 1E pitch 470 uF 10 V C7 electrolytic capacitor 1E pitch 470 uF 16 V C8 capacitor 100 nF 25 V 0805 c9 capacitor 100 nF 25 V 0805 D1 diode S1M SMA Fairchild D2 not mounted diode BZG03 C200 SMA BZG03 C200 D3 diode SiM SMA Fairchild D4 diode BAS316 SOD323 NXP Semiconductors D5 diode BYG20J SMA BYG20J D6 diode PMEG4050EP SOD128 D7 diode BZX384 C3V6 SOD323 BZX384 C3V6 NXP Semiconductors D82. deviate by up to 8 under the no load condition The variation can be reduced by changing the Zener voltage of the D7 and or D8 Zener diodes Reducing the D7 and D8 Zener diode voltage can have marginal consequences for the no load power consumption UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 4 of 14 NXP Semiconductors UM10523 Universal mains white goods flyback SMPS demo board NXF WG SMPS aaa 002237 a Front view 2 aa _ ad a ca p IT b Back view Fig 2 Photographs of the board UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 5 of 14 NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board 4 Demo board connections Remark Mount the board in a shielded or isolated box for demonstration purposes N lt uJ live neutral OV 33V 12V aaa 002336 Fig 3 TEA1721XT Demo board connections UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 6 of 14 NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board 5 Operation and performance Basic ope
3. mains white goods flyback SMPS demo board 3 Specification Table 1 Demo board specification Parameter Value Comment AC line input voltage 85 V AC to 265 V AC supplied to J1 Live and J2 Neutral terminals Output voltage 12 V DC and 3 3 V DC with supplied from connectors respect to neutral J2 1 0 V GNDI2 J2 2 3 3 V J2 3 12 V Maximum output current 12 V 400 mA 3 3 V 400 mA requires a concurrent minimum load on the 12 V output of approximately 50 mA Maximum output power 5W Output voltage accuracy 12 V 5 to 5 adjustable using resistor R3 Output voltage regulation 12V 1 in load range 5 to 100 8 and stability Maximum output ripple 100 mV peak to peak under full load on the 12 V DC output current No load power 20 mW consumption Efficiency 80 Operating temperature 40 C to 85 C EMC filtering not applicable It is assumed that EMI filtering is performed using an external Mains filter in the white goods appliance If compliance with regulations is required for the standalone SMPS the appropriate filtering stage s must be separately implemented Board dimensions 34 3 mm x 34 3 mm x 21 mm LxBxH 1 J2 1 is atthe same potential as J1 2 2 The output voltage can be adjusted with resistor R3 The turns ratio of the secondary windings on transformer T1 defines the ratio between the two output voltages 3 Output voltage regulation can
4. This product is provided on an as is and with all faults basis for evaluation purposes only NXP Semiconductors its affiliates and their suppliers expressly disclaim all warranties whether express implied or statutory including but not limited to the implied warranties of non infringement merchantability and fitness for a particular purpose The entire risk as to the quality or arising out of the use or performance of this product remains with customer In no event shall NXP Semiconductors its affiliates or their suppliers be liable to customer for any special indirect consequential punitive or incidental damages including without limitation damages for loss of business business interruption loss of use loss of data or information and the like arising out the use of or inability to use the product whether or not based on tort including negligence strict liability breach of contract breach of warranty or any other theory even if advised of the possibility of such damages Notwithstanding any damages that customer might incur for any reason whatsoever including without limitation all damages referenced above and all direct or general damages the entire liability of NXP Semiconductors its affiliates and their suppliers and customer s exclusive remedy for all of the foregoing shall be limited to actual damages incurred by customer based on reasonable reliance up to the greater of the amount actually paid by custome
5. UM10523 TEA1721 universal mains white goods flyback SMPS demo board Rev 1 27 January 2012 User manual Document information Info Content Keywords TEA1721XT flyback non isolated dual output white goods SMPS very low no load power primary side feedback Abstract This user manual describes the TEA1721 based 12 V and 3 3 V AC DC SMPS demo board which provides 5 W into a load NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board Revision history Rev Date Description v 1 20120127 first issue Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 2 of 14 NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board 1 Introduction WARNING Lethal voltage and fire ignition hazard The non insulated high voltages that are present when operating this product constitute a risk of electric shock personal injury death and or ignition of fire This product is intended for evaluation purposes only It shall be operated in a designated test area by personnel qualified according to local requirements and labor laws to work with non insulated mains voltages and high voltage ci
6. d in this document is subject to legal disclaimers Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products and NXP Semiconductors accepts no liability for any assistance with applications or customer product design It is customer s sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer s applications and products planned as well as for the planned application and use of customer s third party customer s Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products NXP Semiconductors does not accept any liability related to any default damage costs or problem which is based on any weakness or default in the customer s applications or products or the application or use by customer s third party customer s Customer is responsible for doing all necessary testing for the customer s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer s third party customer s NXP does not accept any liability in this respect Export control This document as well as the item s described herein may be subject to export control regulations Export might require a prior authorization from competent authorities Evaluation products
7. diode BZX384 C13 SOD323 BZX384 C13 NXP Semiconductors IC1 TEA1721 SO7 NXP Semiconductors J1 1 J1 2 2 pole terminal block 2E pitch 1729128 Phoenix J2 1 J2 2 3 pole terminal block 2E pitch 1729131 Phoenix J2 3 T1 Wirth Elektronik 750311993 EE16l1 Wurth Elektronik R1 carbon resistor 22 Q 4E pitch R2 resistor 4 7 KQ 1 0805 lt R3 resistor 100 kQ 0 5 W 1206 z R4 resistor 470 Q 0805 R5 resistor 1 8 Q 0 25 W 1206 R6 resistor 18 kQ 1 12 R7 resistor 10 Q 0805 1 Custom made transformer Primary winding inductance 2 4 mH turns ratio primary secondary auxiliary 6 5 1 1 The secondary winding must have a tap for the 3 3 V output voltage 2 To tune the output voltage change this value UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved Rev 1 27 January 2012 10 of 14 User manual NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board 8 Implementation guidelines UM10523 The maximum current allowed in for the TEA1721 internal switching MOSFET is 700 mA When adapting this circuit take care to ensure that this current value is not exceeded under any circumstances Resistor R1 limits the inrush current The resistor must be a carbon resistor because metal film resistors can act as a fuse in this position If no current limiting is required the resistor can be
8. ment and the product s described herein have been included in section Legal information NXP B V 2012 All rights reserved For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 27 January 2012 Document identifier UM10523
9. miconductors UM10523 Universal mains white goods flyback SMPS demo board 11 Legal information 11 1 Definitions Draft The document is a draft version only The content is still under internal review and subject to formal approval which may result in modifications or additions NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information 11 2 Disclaimers Limited warranty and liability Information in this document is believed to be accurate and reliable However NXP Semiconductors does not give any representations or warranties expressed or implied as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information NXP Semiconductors takes no responsibility for the content in this document if provided by an information source outside of NXP Semiconductors In no event shall NXP Semiconductors be liable for any indirect incidental punitive special or consequential damages including without limitation lost profits lost savings business interruption costs related to the removal or replacement of any products or rework charges whether or not such damages are based on tort including negligence warranty breach of contract or any other legal theory Notwithstanding any damages that customer might inc
10. r for the product or five dollars US 5 00 The foregoing limitations exclusions and disclaimers shall apply to the maximum extent permitted by applicable law even if any remedy fails of its essential purpose 11 3 Trademarks Notice All referenced brands product names service names and trademarks are the property of their respective owners NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 13 of 14 NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board 12 Contents 1 Introduction os occa ies ese eeeie asec eset ate erecta as 3 1 1 Features and benefits 3 2 Safety Warning 00e cece ee eee 3 3 Specification 0 0 cece eee eee eee 4 4 Demo board connections 6 5 Operation and performance 7 5 1 EfICIGNGY idod piain e a 7 5 2 Output voltage stabiliy 8 6 Demo board schematic 9 7 PCB components 00eeeeeeeeeee 10 8 Implementation guidelines 11 9 Board layout 1 0 2 0 cece eee eee eee 12 10 Referentes cerio kreii eaaa ae ad 12 11 Legal information 00e cece eens 13 11 1 Definitions 0 0 0 0 0 cc eee eee eee 13 11 2 Disclaimers esre d ea ba eee eee Ewes 13 11 3 Trademarks 0 0 0 0 13 12 GONnTENIS 5 5 oo de epics eh eee cicin eines See 14 Please be aware that important notices concerning this docu
11. ration of the IC is described in the NXP Semiconductors TEA1721XT data sheets 5 1 Efficiency 100 aaa 002239 n 1 2 80 60 40 20 0 0 1000 2000 3000 4000 5000 Pout mW 1 115 V AC input 2 230 V AC input Fig 4 Typical efficiency of the TEA1721 universal mains white goods flyback controller as a function of load UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 7 of 14 NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board 5 2 Output voltage stability 14 aaa 002240 Vout Vv 13 12 1 2 11 10 0 1000 2000 3000 4000 5000 Pout mW 1 115 V AC input 2 230 V AC input Fig 5 Typical output voltage stability of the TEA1721 universal mains white goods flyback controllers a function of load UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 8 of 14 NXP Semiconductors UM10523 6 Demo board schematic Universal mains white goods flyback SMPS demo board
12. rcuits This product shall never be operated unattended This user manual describes the TEA1721 based 12 V and 3 3 V AC DC SMPS demo board which provides 5 W into a load The switch mode converter operates in flyback mode at a maximum frequency of around 50 kHz Over current and short circuit protection are built in Under no load conditions the power consumption of the flyback converter is around 20 mW This application is typically suited for White Goods appliances and industrial applications 1 1 Features and benefits e Compatible with Universal Mains 85 V AC to 265 V AC e Dual output voltage 12 V DC and 3 3 V DC e Primary side voltage regulation removes the need for an optocoupler e Total maximum power is 5 W e No load power consumption of 20 mW 2 Safety Warning The demo board is powered by AC mains voltage Avoid touching the board when power is applied An isolated housing is obligatory when used in uncontrolled non laboratory environments Always provide galvanic isolation of the mains phase using a variable transformer The following symbols identify isolated and non isolated devices 019aab173 019aab174 a Isolated b Non isolated Fig 1 Isolated and non isolated symbols UM10523 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 3 of 14 NXP Semiconductors U M1 0523 Universal
13. replaced with a short circuit Zener diodes D7 and D8 form a small pre load and act as overvoltage spike suppressors If no over voltage suppression is necessary the Zener diodes can be replaced with small resistors Capacitors C7 and C8 are mounted for additional HF noise suppression If it is not needed these components can be omitted All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 27 January 2012 11 of 14 NXP Semiconductors U M1 0523 Universal mains white goods flyback SMPS demo board 9 Board layout aaa 002249 a Top silk screen plus top component placement and drill pattern aaa 002250 b Bottom copper and bottom silk screen plus component placement Fig 7 PCB layout The bottom silk screen is normally not used in PCB production Merged with the bottom copper it is shown here as a component placement reference only See Table 3 for a list of components Table 3 Drill tool table Drill tool code C Drill diameter 1 mm D 0 9 mm E 1 3 mm 10 References 1 TEA1721XT Ultra low standby SMPS controller with integrated power switch 2 AN11060 TEA172X 5 W to 11 W power supply USB charger UM10523 All information provided in this document is subject to legal disclaimers Rev 1 27 January 2012 NXP B V 2012 All rights reserved 12 of 14 User manual NXP Se
14. ur for any reason whatsoever NXP Semiconductors aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors Right to make changes NXP Semiconductors reserves the right to make changes to information published in this document including without limitation specifications and product descriptions at any time and without notice This document supersedes and replaces all information supplied prior to the publication hereof Suitability for use NXP Semiconductors products are not designed authorized or warranted to be suitable for use in life support life critical or safety critical systems or equipment nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury death or severe property or environmental damage NXP Semiconductors and its suppliers accept no liability for inclusion and or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and or use is at the customer s own risk Applications Applications that are described herein for any of these products are for illustrative purposes only NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification UM10523 All information provide
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