UM10694 - NXP Semiconductors
Contents
1. L1 D1 3 3mH V8P 10 M3 86A LED gt O x6 R A TVS 400V RM6 x5 ara gl cg Al en 1000 uF SS 1000pF H S 16V 16V C FLL MKDS m D6 3 2 5 08 BZX384 C18 c MainsN DRAIN i O Conn F R A 6P GND LED 05 c9 DVDT SPU02N60C3 2 2 nF cil 3 Dr AW 680 nF R10 SOURCE DRIVER SS ZEN 33 ka SSL2109A R9 75kQ pot Lt R8 Y D4 R11 1N4148W 7 F 33 kQ D2 R2 oi BAS21 100 BC857BW 14 R13 300 ka oe Ce a 4 7 uF R12 50V gt 470 ka I R25 22 ka Fig 10 SSL2109ADB1107 schematic SIQVINPUOIILPS dXN Aup 37 pS dd YBIY OLND M L A OEZ LOTTSAVGOTZ1SS V6ESOTININ NXP Semiconductors UM10694 SSL2109ADB1107 230 V 7 W GU10 high PF isolated LED driver 8 PCB component assembly and layout UM10694 8 1 PCB component assembly C JPF 0 7 SSL2109ADB1106 Cx JPF gt 0 9 SSL2109ADB1107 Y Y S e SS UU TUU S SS z vd Cem ee 230V 7W EXTENDED GU10 FLYBACK a Top assembly b Bottom assembly Fig 11 PCB component assembly All information provided in this document is subject to legal disclaimers User manual Rev 1 9 April 2013 NXP B V 2013 All rights reserved 15 of 21 NXP Semiconductors U M 10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated2. NXP Semiconductors U M 10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver 2 Safety The board is connected to mains voltage Avoid touching the demo board while it is connected to the mains voltage An isolated housing is obligatory when used in uncontrolled non laboratory environments Galvanic isolation of the mains phase using a variable transformer is always recommended 00 Ge a Isolated b Notisolated Fig 2 Variable transformer isolation symbols UM10694 All information provided in this document is subject to legal disclaimers User manual Rev 1 9 April 2013 NXP B V 2013 All rights reserved 5 of 21 NXP Semiconductors UM10694 3 Specifications SSL2109ADB1107 230 V 7 W GU10 high PF isolated LED driver UM10694 Table 1 Specifications of the SSL2109ADB 1107 Symbol Parameter Value V mains AC mains supply voltage 230 V 10 P in input power 6 9 W at nominal V mains 230 V P out output power 5 9 W Vuen output voltage LED voltage 8 V to 14 V with nominal Vuen 10 8 V lLeo output current LED current 550 mA l ripple output ripple current 215 mA p p Alen AVmains line regulation 0 6 mA V 42 5 len at 10 V mains Variation Alen AVieo load regulation 4 mA V 1 len at 10 Vuen variation n efficiency 85 PF power factor 0 92 THD total harmonic distortion 19 fsw switching frequency 70 kHz 50 00 DRILL CHART
3. The divider network consisting of R5 R6 R7 R9 R10 D4 C10 and C11 modulates the base of Q7 according to the rectified mains Consequently a modulating current set by R11 flows through R8 and the sense current through R1 R24 and R26 is also modulated Depending on the divider resistor values the HF current through the primary has a current with a rectified mains modulation resulting in a high PF The PF can be increased decreased by decreasing increasing R5 and R6 anda compromise can be reached between PF and line regulation 4 3 RCDclamp Leakage inductance of the transformer is in series with primary inductance and the drain of MOSFET Q5 This leakage inductance together with the parasitic capacitance across the drain source of Q5 causes HF ringing when Q5 switches off If the leakage is not minimized the voltage at the drain reaches high voltages levels which can damage Q5 if voltage levels exceed the maximum allowable level An RCD clamp R17 C8 and D3 prevents the voltage on the drain of Q5 exceeding the maximum drain voltage when Q5 switches off 4 4 Supply voltage The supply voltage of the SSL2109A is achieved using an auxiliary winding As further advantages the auxiliary winding provides via a resistor R25 on its underwinding both a simple solution for improved load regulation using R12 and open circuit protection OCP via the NTC pin using R13 4 4 1 Open circuit protection If no LED string is connected to the conve
4. 0 125 W 5 0805 CRCWO80510KOFKEA Vishay UM10694 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 17 of 21 NXP Semiconductors UM10694 SSL2109ADB1107 230 V 7 W GU10 high PF isolated LED driver Reference Description and values Part number Manufacturer R22 resistor 220 kQ 0 25 W 5 1206 RC1206 R 07220KL Yageo R23 resistor 33 Q 0 1 W 5 0603 RC0603 R 0733RL Yageo R24 resistor 3 9 Q 0 25 W 1 1206 RC1206FR 073R9L Yageo R25 resistor 2 2 kQ 0 1 W 5 0603 CRCW06032K20FKEA Vishay R26 resistor 3 3 Q 0 25 W 1 1206 RC1206FR 073R 3L Yageo T1 flyback transformer RM6 750313738 Rev01 Wurth U1 IC SSL2109A S08 SSL2109A NXP Semiconductors X5 Mains connector terminal block MKDSN2 5 5 08 Phoenix Contact X6 LED connector terminal block BL3 36Z Fischer Elektronik X6 LED connector terminal block alternative SSW 106 02 G S RA Samtec Solder pin for LED E Solder pin for LED UM10694 All information provided in this document is subject to legal disclaimers ONXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 18 of 21 NXP Semiconductors UM10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver 10 Transformer specification A RM6 transformer with reinforced isolation is used with flying leads CUSTOMER TERMINAL RoHS LEAD Pb FREE Sn
5. 3 Table 3 Input output parameters SSL2109ADB 1107 V mains V 230 PF Pin W 0 92 6 9 len MA Pout DN n 550 5 9 0 85 UM10694 All information provided in this documentis subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 9 of 21 NXP Semiconductors UM10694 UM10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver Fig 4 MEIPF 0 7 SSL2109ADB1106 C JPF gt 0 9 SSL2109ADB1107 SSL2109A 230V 7W EXTENDED GU10 FLYBACK R1 0 Board connection for SSL2109ADB 1107 with 3 string LED load All information provided in this document is subject to legal disclaimers ONXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 10 of 21 NXP Semiconductors U M 10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver 6 Performance data SSL2109ADB 1107 6 1 Efficiency 0 9 0 8 0 7 0 6 0 5 205 215 225 235 245 255 Vmains V Fig 5 Efficiency as a function of mains voltage 6 2 Power factor PF 0 9 0 8 0 7 0 6 0 5 205 215 225 235 245 255 Vmains V Fig 6 Power factor as a function of mains voltage UM10694 All information provided in this document is subject to legal disclaimers ONXP B V 2013 All rights reserved User manua
6. ersten 11 a Une 11 o igr ditannisianarancnini a 11 Line regulston 12 Load regulation sssssssisssssrssissrsrisersrresrsrenses 12 ElectroMagnetic Interference EMI 13 Schematic diagram ssssssssssunnnnnunnunnnnnnnnnnannnnnnnna 14 PCB component assembly and layout 15 PCB component assembly cscs 15 PEB layo Ut nna araa RN 16 Bill Of Material BOM SSL2109ADB 1107 17 Transformer specification mosmosmmmmaas 19 Legal information ssssseee eee 20 vele IC 20 DisclalMeS asiiitaintaio nilo 20 Trade makina eran 20 Content sss 21 Please be aware that important notices concerning this document and the product s described herein have been included in the section Legal information NXP B V 2013 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 9 April 2013 Document identifier UM10694
7. to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 8 of 21 NXP Semiconductors UM10694 5 Demo board connections SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver The SSL2109ADB1107 demo board is supplied with a 230 V 50 Hz mains supply where the board connection is shown in Fig 4 Table 2 Input and output connections Connector L X5 X6 Function AC MainsL AC MainsN LED anode LED cathode AC mains input LED load output Remark line wire solder connection on small board neutral wire solder connection on small board positive LED wire solder connection on small board negative LED wire solder connection on small board AC mains in terminal block LED connector 6 way female for NXP LED load Remarks Make all connections with the input mains supply switched off Use a protective shield over application and never touch the board when measuring or testing Connections and testing e Connect 3 LED string load to the SSL2109ADB1107 together with power meters at both inputs and outputs e Connect V mains 230 V AC 50 Hz using an isolating transformer initially set to 0 V to the input connection points of the flyback converter Alternatively use an AC power supply with limited output current capability for example 200 mA e Increase V mains to 230 V AC and measure the different parameters as shown in Table
8. 1j 300 V 0 25 A SOD323F BAS21 NXP Semiconductors D3 fast diode ES1 600 V 1 A DO 214AC SMA ES1 Fairchild D4 high speed diode 100 V 0 4 W SOD123 1N4148W 7 F Diodes Inc D6 Zener diode 18 V 200 mA SOD323F BZX384 C18 NXP D11 TVS diode 400V DO 41 BZW04 342 Multicomp FL1 solder hole for flying lead of transformer T1 A A FL2 solder hole for flying lead of transformer T1 B S L1 inductor 3 3 mH 100 mA 10 Q radial 22R335C Murata L solder pin for MainsL N solder pin for MainsN Q5 transistor N channel MOSFET 650 V 3 Q SPU02N60C3 Infineon Q7 transistor BC857BW PNP SOT323 BC857BW NXP Semiconductors R resistor 10 Q 1 W 5 Axial MFP1 10R J Welwyn R1 resistor 4 7 Q 0 25 W 1 1206 RC1206FR 074R7L Yageo R2 resistor 10 Q 0 1 W 5 0603 ERJ 3GEYJ 100V Panasonic R5 resistor 680 kQ 0 25 W 5 1206 RC1206 R 07680KL Yageo R6 resistor 680 kQ 0 25 W 5 1206 RC1206 R 07680KL Yageo R7 resistor 560 kQ 0 1 W 1 0603 CRCWO603560KFKEA Vishay R8 resistor 4 7 KQ 0 1 W 1 0603 CRCW06034K70FKEA Vishay R9 resistor 75 KQ 0 1 W 1 0603 CRCW060375KOFKEA Vishay R10 resistor 33 kQ 0 1 W 1 0603 CRCW060333KOFKEA Vishay R11 resistor 33 kQ 0 1 W 1 0603 CRCWO60333KO0FKEA Vishay R12 resistor 470 kQ 0 1 W 1 0603 CRCW0603470KFKEA Vishay R13 resistor 300 KQ 0 1 W 1 0603 CRCW0603300KFKEA Vishay R17 resistor 220 kQ 0 25 W 5 1206 RC1206 R 07220KL Yageo R19 resistor 10 kQ
9. 96 Ag4 Yes Yes 012 x 030 REF 2 0 x 76 TERM NO s FOR REF 020 5 SURFACE A IN RECOMMENDE Fig 13 Inductor speci 520 MAX IS oe H 695 MAX 17 65 ONLY 50 PART MUST INSERT FULLY TO D GRID Clip terminals may be longer than bobbin terminals NOTCH LOCATES TERM 1 SIDE IN UPPER FLANGE 655 MAX 16 64 Flying leads exit the top side of the coil on the terminal 1 side 1 3 ref FL1 is labeled 400 2 10 16 9 055 2 1 40 P C PATTERN COMPONENT SIDE fication El RECOMMENDED Table 5 Electrical specification All values are specified at25 T unless otherwise specified All values without tolerance are typical values Reinforced insulation for a primary circuit at a working voltage of 250 V RMS Parameter DCR 5 3 DCR FL1 FL2 dc resistance 2 6 primary inductance 5 3 leakage inductance 5 3 primary saturation current turns ratio 5 3 FL1 FL2 turns ratio 5 3 2 6 Value 1 5 Q 10 130 mQ 10 685 mQ 10 1 5 mH 10 maximum 7 5 uH 440mA 5 1 1 1 5 1 1 Comment 100 mV 10 kHz short circuit 2 to 6 and FL1 to FL2 UM10694 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 19 of 21 NXP Semiconductors UM10694 SSL2109ADB 1107 230
10. DIAM QTY NOTE o 0000000 27 00 A NON PLATED MILLING 0 00MM THICKNESS 1 00 0 von Ka X so o o a x h E NON PLATED Fig 3 SSL2109ADB1107 demo board dimensions a OO sinini alni NN oO a a All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 6 of 21 NXP Semiconductors U M 10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver 4 Functional description UM10694 4 1 Input filtering A differential mode r filter is implemented to reduce differential mode noise originating from the High frequency HF switching currents voltages in the primary of the converter from returning to the mains This noise must be kept to a minimum by e Small primary current loop C2 to pin 5 of T1 pin 3 of T1 to drain of external MOSFET Q5 ground return from sense resistors R1 R24 R26 to C2 ground e Snubber components D3 R17 C8 closely parallel to pins 5 and 3 of T1 e Track length from pin 3 of T1 to drain of external MOSFET to be small in order to reduce capacitance to surroundings For this 7 W application C2 must be chosen sufficiently large to act as a buffer for the HF current flowing in the primary but also small enough to maintain a high PF where a value of 100 nF for C2 is a good compromise 4 2 PF adjustment
11. LED driver 8 2 PCB layout b Solder side Fig 12 PCB layout UM10694 All information provided in this document is subject to legal disclaimers ONXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 16 of 21 NXP Semiconductors UM10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver 9 Bill Of Material BOM SSL2109ADB1107 Table 4 Reference Description and values Part number Manufacturer BD1 bridge rectifier 600 V 0 8 A B6S G Comchip Technology C1 capacitor 100 nF 450 V 10 metal film radial CL21 450V 0 1u F K Guang Da C2 capacitor 100 nF 450 V 10 metal film radial CL21 450V 0 1u F K Guang Da C3 capacitor 1000 uF 16 V 20 electrolytic radial ECA1CM102 Panasonic C4 capacitor 100 nF 25 V 10 X7R ceramic 0603 GRM188R71E104KA01D Murata c5 capacitor 100 nF 25 V 10 X7R ceramic 0603 GRM188R71E104KA01D Murata c6 capacitor 4 7 uF 50 V 10 1206 UMK316AB7475KL T Taiyo Yuden C8 capacitor 10 nF 250 V 20 polyester radial ECQE2103 F Panasonic Co capacitor 2 2 nF 4 kV 20 radial DE1E3KX222MA5B Murata C10 capacitor 330 pF 50 V 20 X7R ceramic 0603 CC0603KRX7R9BB331 Yageo C11 capacitor 680 nF 25 V 10 0805 C0805C 684K3NACTU Kemet C13 capacitor 1000 uF 16 V 20 electrolytic radial ECA1CM102 Panasonic D1 Schottky diode 100 V 8 A TO 277A V8P 10 M3 86A Vishay D2 switching diode BAS2
12. UM10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver demo board Rev 1 9 April 2013 User manual Document information Info Content Keywords SSL2109ADB1107 flyback converter high power factor GU10 Abstract This document describes the operation of a 230 VII W non dimmable LED driver demo board featuring SSL2109A and using an isolated flyback topology The SSL2109ADB1107 demo board is designed for GU10 form factors used in Solid State Lighting SSL applications NXP Semiconductors U M 10694 SSL2109ADB1107 230 V 7 W GU10 high PF isolated LED driver Revision history Rev Date Description v 1 20130409 first issue UM10694 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 2 of 21 NXP Semiconductors U M 10694 SSL2109ADB1107 230 V 7 W GU10 high PF isolated LED driver 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 circuits This product shall never be operated unattended 1 Introduction Thi
13. V 7 W GU10 high PF isolated LED driver 11 Legal information 11 1 Definitions Draft The documentis 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 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 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 c
14. bility 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 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 f
15. ferred to as Application Itis customer s sole responsibility to check whether the NXP Semiconductors product is suitable and fit for the Application planned Customer has to do all necessary testing for the Application in order to avoid a default of the Application and UM10694 All information provided in this document is subject to legal disclaimers the product NXP Semiconductors 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 national authorities 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 ina
16. l Rev 1 9 April 2013 11 of 21 NXP Semiconductors UM10694 UM10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver 6 3 Line regulation Fig 7 700 en mA 620 540 460 380 300 205 215 225 235 245 255 Vmains V Line regulation 6 4 Load regulation Fig 8 H he LL TI mA TT 380 300 11 8 Vuen V Load regulation All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 12 of 21 NXP Semiconductors UM10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver 6 5 ElectroMagnetic Interference EMI Fig 9 NXP Semiconductors REW 3 kHz 18 Feb 13 14 04 MT 1 ma Att 10 dB e A H UI eE TRI ESN ap d HA d IA Woll mall Jun H Bu TH pili HU oo C E S ELE za oe EMI performance 59 41 dBkV UM10694 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 13 of 21 v690TWN 7 Schematic diagram jenueuw sN 10z ludy 6 T aen SIBUUIE DSIP 2a o pafqns S JUSWINDOP SILA U p pnod UOREWOJUT TV pamasa SYBU IV ETOZ A9 dXNO TZ JO pI
17. onditions 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 medical military aircraft space or life support equipment nor in applications where failure or malfunction of a NXP Semiconductors product can reasonably be expected to result in personal injury death or severe property or environmental damage NXP Semiconductors accepts no liability for inclusion and or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and or use is atthe 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 NXP Semiconductors does not accept any liability related to any default damage costs or problem which is based on a weakness or default in the customer application use or the application use of customer s third party customer s hereinafter both re
18. or 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 11 3 Trademarks Notice All referenced brands product names service names and trademarks are property of their respective owners NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 20 of 21 NXP Semiconductors UM10694 SSL2109ADB1107 230 V 7 W GU10 high PF isolated LED driver 12 Contents L 1 1 2 3 4 4 1 4 2 4 3 4 4 4 4 1 4 4 2 6 1 6 2 6 3 6 4 6 5 8 1 8 2 10 11 11 1 11 2 11 3 12 Introduction ssssssussunsnsnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnannnnnnnna 3 Features of the application eee 3 ETC 5 Specifications ceseeeseet eet eete eens 6 Functional description cscssseeees sees eens 7 Input FILE TING iiinis 7 PEadustiMN Escocia aca 7 RCD MPa 7 Supply Vol QO crucis ticas 7 Open circuit protection omnnnncinnnnnnnonnenrnnos 7 SMO Circulante ea 8 Demo board CONNECTIONS mmcomncosncosccnancn arca acrnacas 9 Performance data SSL2109ADB1107
19. rter output the voltage can quickly exceed the maximum rating of the output capacitors C3 and C13 The underwinding of the auxiliary is connected to resistor R25 to prevent this The voltage across R25 decreases as the output voltage increases Consequently the voltage at the NTC pin decreases once the current through R13 exceeds the internal current of the NTC pin When the NTC voltage drops below 0 35 V then the SSL2109A switches off All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 7 of 21 NXP Semiconductors U M 10694 UM10694 4 4 2 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver An external 18 V Zener diode is included at the VCC pin to prevent that the voltage exceeds 20 V atthe VCC pin for this no LED string situation Short circuit When the LED terminals are shorted the SSL2109A defaults to its maximum demagnetization time of 36 us This prevents that the inductor current ramps up to an excessively large value while the input power is limited and the SSL2109A enters OPS protection latched mode Remark Do not try to short circuit the LED output while the circuit is powered or without discharging C3 The short circuit protection is intended for zero hour short circuit protection so a short circuit during first assembly before power is applied All information provided in this document is subject
20. s user manual describes the operation of the SSL2109ADB1107 demo board featuring the SSL LED driver SSL2109A in a 230 V 7 W isolated flyback converter application The SSL2109ADB1107 demo board is designed for driving a 3 LED string load The PCB dimensions are compatible with GU10 form factors used in SSL applications The demo board provides a simple and effective solution having a power factor greater than 0 9 and efficiency up to 85 for SSL applications 1 1 Features of the application e GU10 form factor compatibility e Open LED and short circuit LED string protection e OverCurrent protection OCP and OverTemperature protection OTP e Power factor PF greater than 0 9 and THD lt 20 e Efficiency up to 85 e Compliant with IEC 61000 3 2 harmonics standard The assembled top and bottom board views are shown in Fig 1 with the board dimensions in Fig 3 The board dimensions allow enough headroom with GU10 lamps UM10694 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 3 of 21 NXP Semiconductors U M 10694 SSL2109ADB 1107 230 V 7 W GU10 high PF isolated LED driver a Top view b Bottom view Fig 1 SSL2109ADB1107 230 V 7 W GU10 demo board UM10694 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 1 9 April 2013 4 of 21
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