UM10904 SSL5257DB1351 3.3 V standby/auxiliary power supply to
Contents
1. 9 September 2015 9 of 17 NXP Semiconductors UM10904 SSL5257DB1351 3 3 V standby auxiliary power supply 7 3 tow versus lout 50 kHz 40 30 20 1 230V 2 120V aaa 019445 42 load MA Fig 8 fsw as a function of lout 7 4 Current through inductor L 50 0 masiv i 0 0 mA offset aaa 019459 Fig 9 Waveform of current in inductor during burst mode UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 10 of 17 NXP Semiconductors U M1 0904 UM10904 SSL5257DB1351 3 3 V standby auxiliary power supply 50 0 nad ay 0 0 mA ottset ji Wouk Fig 10 Waveform of current in inductor during DCM mode 50 0 mAsdiv KELTY EREA a oo Fig 11 Waveform of current in inductor during BCM mode All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 11 of 17 NXP Semiconductors UM1 0904 8 Schematic SSL5257DB1351 3 3 V standby auxiliary power supply D1 remove pin 2 3 RGND 4 RGND 5 VDD3V3 RGND R1 VRECT Bt S41JL 1 2 kQ xt 90121 0765 1 VRECT SSL5257 DE2. m UM10904 PER SSL5257DB1351 3 3 V standby auxiliary power supply to power a microcontroller for smart lighting interfaces Rev 1 9 September 2015 User manual Document information Info Content Keywords SSL5257DB1351 SSL5257TE Solid State Lighting SSL applications standby auxiliary power supply smart lighting interfaces Abstract This user manual describes the SSL5257DB1351 demo board of a standby auxiliary power supply The power supply generates a 3 3 V supply for a microcontroller used in SSL or smart lighting applications The application features the SSL5257TE NXP Semiconductors UM10904 Revision history SSL5257DB1351 3 3 V standby auxiliary power supply Rev Date Description v 1 20150909 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 UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 2 of 17 NXP Semiconductors U M1 0904 SSL5257DB1351 3 3 V standby auxiliary power supply 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
3. their respective owners GreenChip is a trademark of NXP Semiconductors N V NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 16 of 17 NXP Semiconductors UM10904 14 Contents SSL5257DB1351 3 3 V standby auxiliary power supply 13 1 13 2 13 3 14 Introduction 0 0 ccc eee 3 FPOATUNES sie eaa dude ata dud Reem A RAEE E 3 Safety warning 0 200 c cece eee eee 4 Specifications 00 ce eee eee eee 4 Board photographs 0005 5 Board connections 20 20005 5 Functional description 000005 6 Performance and measurements 9 Vout VErSUS lout siteerasi he e ok eee 9 Pin VEISUS Olt ceeew tee tee eee ee ee oi 9 few VEFSUS lout i teami eee 10 Current through inductorL 10 Schematl sic ic eee ee ieee nee ee Sew ee ee 12 Bill Of Materials BOM 13 Layout and assembly 00s000es 14 Abbreviations 200 2000e eee eee 15 Referents See u a 15 Legal information 00 eeeeeeee 16 Definitions n nnana naaa 16 Disclaimers a we See ae sae are a a E 16 Trademarks 0 0 ccc eee 16 CONTENTS seiret aapa KERDE NEEE EEE 17 Please be aware that important notices concerning this document and the product s described herein have been included in section Legal information NXP Semiconductors N V 2015 All rights reserved For mo
4. 4 mm 90121 0765 Molex UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 13 of 17 NXP Semiconductors U M1 0904 SSL5257DB1351 3 3 V standby auxiliary power supply 10 Layout and assembly aaa 019466 aaa 019467 a Top b Bottom Fig 13 SSL5257DB1351 demo board PCB assembly i aaa 019468 Fig 14 SSL5257DB1351 PCB layout UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 14 of 17 NXP Semiconductors UM10904 11 Abbreviations SSL5257DB1351 3 3 V standby auxiliary power supply Table 3 Abbreviations Acronym Description BCM Boundary Conduction Mode DCM Discontinuous Conduction Mode PCB Printed Circuit Board PWM Pulse Width Modulation SSL Solid State Lighting VLC Visual Light Communication 12 References 1 SSL5257TE data sheet Mains dimmable buck boost LED driver IC 10 Ohm 700 V UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 S
5. MOVP ES1JL C1 2 2 pF 400 V D2 ZN B2x384 C3V6 I VDD3V3 Fig 12 SSL5257DB1351 demo board schematic diagram aaa 019444 UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 12 of 17 NXP Semiconductors UM10904 SSL5257DB1351 3 3 V standby auxiliary power supply 9 Bill Of Materials BOM Table 2 SSL5257DB1351 demo board BOM Reference Description and values Part number Manufacturer C1 capacitor 2 2 uF 20 400 V ALU THT ECA2GHG2R2 Panasonic C2 capacitor 330 uF 20 6 3 V ALU THT MCUMR6V3337M8X5 Multicomp C3 capacitor 2 7 nF 10 50 V X7R 0603 l C4 capacitor 100 nF 10 50 V X7R 0603 D1 D3 diode 420 V 1 A S1JL Taiwan Semiconductor D2 diode Zener 3 6 V 250 mA BZX384 C3V6 NXP Semiconductors L1 inductor 1 mH 170 mA 22R105C Murata R1 resistor 1 2 KQ 5 1 W PR01 THT PR01000101201JR500 Vishay R2 resistor 10 Q 1 250 mW 1206 R3 resistor 5 1 Q 1 250 mW 1206 R4 resistor 150 Q 1 100 mW 0805 R5 resistor 560 kQ 5 63 mW 0603 R6 resistor 120 kQ 5 63 mW 0603 R7 resistor 150 kQ 5 63 mW 0603 U1 LED driver dimmer SSL5257TE SSL5257TE NXP Semiconductors x1 header R A 1 x 5 way 2 5
6. amount actually paid by customer 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 Safety of high voltage evaluation products 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 that is qualified according to local requirements and labor laws to work with non insulated mains voltages and high voltage circuits The product does not comply with IEC 60950 based national or regional safety standards NXP Semiconductors does not accept any liability for damages incurred due to inappropriate use of this product or related to non insulated high voltages Any use of this product is at customer s own risk and liability The customer shall fully indemnify and hold harmless NXP Semiconductors from any liability damages and claims resulting from the use of the product Translations A non English translated version of a document is for reference only The English version shall prevail in case of any discrepancy between the translated and English versions 13 3 Trademarks Notice All referenced brands product names service names and trademarks are the property of
7. damages that customer might incur 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 Cus
8. 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 circuits This product shall never be operated unattended The SSL5257DB1351 is a demo board of a 3 3 V standby auxiliary power supply which is used to power microcontrollers in smart lighting systems The SSL5257DB1351 demo board provides a simple and effective solution for a 3 3 V standby auxiliary power supply It is implemented on a small PCB with a minimum component count and features the SSL5257TE Target applications are smart lighting applications downlight applications featuring Visual Light Communication VLC and fixture applications using microcontrollers having both analog and Pulse Width Modulation PWM dimming capabilities The SSL5257TE is a dimmable SSL controller It is used in this application to generate a constant voltage output The SSL5257DB1351 demo board provides both good line regulation and load regulation The single PCB dimensions are 27 mm x 20 mm with CEM 3 or FR4 material and copper thickness of 80 um 1 1 Features e 3 3 V standby auxiliary supply for primary side housekeeping e Integrated HV MOSFET and start up current source e HSO8 with exposed die pad e Good line regulation and load regulation e Low power losses e Low componen
9. e All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 7 of 17 NXP Semiconductors U M1 0904 SSL5257DB1351 3 3 V standby auxiliary power supply Burst mode DCM mode BCM mode Vout V 3 Pin mW 50 fsw KHz 45 25 10 20 30 40 50 lout MA aaa 019440 Fig 5 Output voltage input power and switching frequency as function of output current UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 8 of 17 NXP Semiconductors UM10904 SSL5257DB1351 3 3 V standby auxiliary power supply 7 Performance and measurements 7 1 Vout Versus lout aaa 019448 Vout Vv 1 SS SSS ee 2 4 0 8 1 230V 2 120V Fig6 Vou asa function of lout 30 0 lout MA 7 2 Pin versus lout aaa 019456 500 Pin mW 400 300 200 100 1 230V 2 120V Fig 7 Pin as a function of lout 30 0 lout MA UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1
10. eptember 2015 15 of 17 NXP Semiconductors UM10904 13 Legal information SSL5257DB1351 3 3 V standby auxiliary power supply 13 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 13 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
11. es Evaluation products 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
12. gins when Visng gt 25 mV i e energize level and demagnetization valley is detected at the DEMOVP pin or when the 40 us timer is completed All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 6 of 17 NXP Semiconductors U M1 0904 SSL5257DB1351 3 3 V standby auxiliary power supply RGND dim curve DRAIN SSL5257TE OCP 0 9V Fig 4 Internal block schematic with application components energize 25 mV demagnetization q 20 mV VALLEY DETECT DEMOVP aaa 019439 UM10904 The current through L during the secondary stroke i e during the tog period when the MOSFET is switched off and the freewheel diode is conducting and resistor R determine the voltage on the DEMOVP pin The current through L during the primary stroke i e during the ton period and the MOSFET is switched on and resistor Rsyns determine the voltage on the ISNS pin Visns Depending on the output current lout drawn from the Vout supply the SSL5257TE operates in burst mode DCM mode or BCM mode see Figure 5 The minimum on time level on the COMP pin is accurate since it is derived from the band gapped Vcc supply and 1 resistors R1 and R2 in the application Output regulation is best when by the 40 us timer determines the controller frequency in burst mode and DCM mod
13. l rights reserved User manual Rev 1 9 September 2015 4 of 17 NXP Semiconductors U M1 0904 SSL5257DB1351 3 3 V standby auxiliary power supply 4 Board photographs Thal in Tay oe io re Ro R7 i aaa 0194471 aaa 019442 a Top Fig 2 SSL5257DB1351 photographs b Bottom 5 Board connections 3 3V RGND VRECT aaa 019443 Fig 3 SSL5257DB1351 board connections UM10904 All information provided in this document is subject to legal disclaimers Rev 1 9 September 2015 NXP Semiconductors N V 2015 All rights reserved 5 of 17 User manual NXP Semiconductors UM10904 SSL5257DB1351 3 3 V standby auxiliary power supply 6 Functional description UM10904 When the voltage on the DIM pin is connected to ground the V I converter connected to the DIM circuit discharges the capacitor on the COMP pin with 500 nA The 40 us timer is also activated The voltage on the COMP pin Vcomp operates at the minimum of its regulation on time ton which is corresponding with 2 V on the COMP pin The voltage can be calculated with Equation 1 R2 RI R2 Vou Vec Ri Vcome py 300 nA RI Example s Voc 13 6V e Vcomp 2 V e R1 560 kQ e R2 270 KQ The result Vout 3 3 V During tof the average V I current is regulated to lret The secondary stroke begins once Vion gt Vcomp OF Visns gt 0 9 V see Figure 4 The primary stroke be
14. re information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 9 September 2015 Document identifier UM10904
15. t count 15 components including the SSL5257TE e Single sided PCB dimensions 27 mm x 20 mm UM10904 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 9 September 2015 3 of 17 NXP Semiconductors UM10904 2 Safety warning SSL5257DB1351 3 3 V standby auxiliary power supply The SSL5257DB1351 demo board input is connected to output of the filtered rectified mains Avoid touching the board while it is connected to the mains voltage and when it is in operation An isolated housing is obligatory when used in uncontrolled non laboratory environments Galvanic isolation from the mains phase using a fixed or variable transformer is always recommended Figure 1 shows the symbols on how to recognize these devices a Isolated 019aab173 Fig 1 Isolation symbols b Not isolated 019aab174 3 Specifications UM10904 Table 1 SSL5257DB1351 specifications Symbol Parameter Value E IC used SSL5257TE VRECT rectified mains voltage 170 V DC or 325 V nominal Vout output voltage 3 V to 3 6 V 3 3 V nominal lout output current 10 mA typical lt 50 mA AVout Alout load regulation lt 10 for lt 50 mA LxW 27 mm x 20 mm CEM 3 FR4 0 8 mm Cu 35 um All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 Al
16. tomers 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 UM10904 All information provided in this document is subject to legal disclaimers 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 authoriti
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