UM10501 SSL21083 reference board user manual
Contents
1. R5 430 R3 18 KQ LED c6 0 47 pF 250 V J5 4 to 6 o LED SAL 1000 aaa 000504 Fig 12 Schematic 12 Bill of materials Table 5 Bill of materials Component Values C1 C2 C3 C4 C5 C6 D1 D2 J6 J5 R1 R2 R3 R4 R5 R6 L1 L2 U1 capacitor 100 nF 10 400 V capacitor 2 2 uF 105 C 400 V capacitor 1 uF 10 16 V 0603 capacitor 1 nF 10 100 V 0603 capacitor 100 pF 5 630 V 1206 capacitor 0 47 uF 250 V bridge rectifier 1 A 600 V SOIC 4 diode 1 A 600 V SMA connector 2 pin male connector 6 pin female fused resistor 22 Q 2 W 10 500 V variable resistor 13 J 300 V resistor 18 kQ 0 25 W 1 0603 NTC 100 kQ 25 C resistor 4 3 Q 0 25 W 1 1206 resistor 4 7 Q 0 25 W 1 1206 inductor 1 5 mH 10 inductor 3 3 mH 10 IC 600 V SO8 Manufacturer Part number EPCOS B32560J6104K Panasonic ECA2GHG2R2 AVX 0603YC105KAT2A AVX 06031C102KAT2A Yageo CC1206JRNPOBBN101 EPCOS B32561J3474K Multicomp DBLS105G Taiwan Semiconductor ES1JL Phoenix MKDSN 2 5 2 5 08 Fischer BL 3 36Z Welwyn Components EMC2 22RkKI Multicomp MCFT000228 free Vishay NTCLE100E3104JBO free free Murata 22R155C Worth Elektronik 750312318 NXP Semiconductors SSL21083 UM10501 All information provided in this document is subject to legal disclaimers NXP B V2. 230 121 92 100 93 5 0 57 114 230 61 100 100 91 3 0 54 140 2MQ i a 470 nF T Te 100 Q aaa 000503 Fig 10 Active bypass UM10501 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 11 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 10 Known issues UM10501 10 1 Latch up on fast mains toggle It can be observed that the board latches up when the mains voltage is switched on off and then on again within a 1 6 s time period The cause of this is a crossing of the ground trace between buffer capacitor C1 and source resistors R5 R6 This causes a spike between the IC source and GND greater than 1 5 V This in turn activates SWP To overcome this problem a modification can be implemented Connect a wire bridge between R5 R6 GND and the IC GND pin to bypass the crossed traces and reduce switch on spike See Figure 11 for a pictorial view of the modification aaa 001528 Fig 11 Board modification All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 12 of 18 NXP Semiconductors UM10501 11 Schematic SSL21083 reference board user manual J5 1 to 3 o 300 V
3. SSL21083 EMC measurement L phase according to EN55015 norm 30 MHz aaa 000500 Fig 8 Q NXP Semiconductor RBW 9 kHz Marker 1 T2 15 Jun 11 15 34 MT 15 ms 49 86 dBpV Att 10 dB PREAMP OFF 9 000000000 kHz aBuv too 100 kHz 1 MHz 10 MHz N550150 Loo SGL DN Ee leo 2 av TDF CLRWR ENDSSQI5A SSL21083 EMC measurement N phase according to EN55015 norm 30 MHz aaa 000501 UM10501 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 7 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 6 Changing the output current UM10501 The SSL21083 monitors the charging current in the inductor using the sense resistors R5 and R6 It controls a MOSFET to retain a constant peak current In addition the IC supports valley switching These features enable a driver to operate in Boundary Conduction Mode BCM with valley switching where the average current in the inductor is the output current The SSL21083 turns off the MOSFET when the voltage on pin SOURCE reaches 500 mV If the value of R5 in parallel with R6 is 2 Q the peak current is limited to 250 mA _ 0 5 x R
4. SSL21083 reference board user manual 97 o mA 96 95 94 93 92 91 90 aaa 000497 170 190 210 230 250 270 Fig 4 Vi V Line regulation output current as a function of input voltage 96 94 92 90 aaa 000498 170 190 210 230 250 270 Fig 5 Vi V Line regulation efficiency as a function of input voltage 100 n 80 60 40 1 Efficiency 2 Power factor Fig 6 aaa 000499 1 1 0 8 2 0 6 0 4 30 50 70 90 110 130 Vout V DC Load regulation efficiency and power factor as a function of output voltage All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 6 of 18 NXP Semiconductors UM10501 SSL21083 reference board user manual Fig 7 amp NXP Semiconductors RBW 9 kHz Marker 1 T2 thug 230 MT 15 ms 50 97 dBpV Att 10 dB PREAMP OFF 9 000000000 kHz aBuv io 100 kHz 1 MHz 10 MHz 550160 Loo SGL 1 PKI T leo 2 av CLRWR aa I 60 ao ee O a ENSSQI5A
5. 2011 All rights reserved User manual Rev 2 16 November 2011 13 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 13 Inductor appearance and dimensions part must insert fully to A surface A in recommended 2 54 3 30 1 grid 0 53 sq 12 70 max ro mm 13 97 max 750312318 N WO A A dot locates term 1 lot code and date code term numbers for reference only 1 20 2 D Eor E wind 1 3l To iG T 4 De op Q recommended dimensions in mm p c pattern component side note 1 dimension may be exceeded with solder only aaa 000505 Electrical specifications at 25 C unless otherwise stated Fig 13 Inductor appearance and dimensions Table 6 Inductor electrical specifications Electrical specifications at 25 C unless otherwise stated Parameter Comment DC resistance at 20 C 2 to 4 2 13 Q 10 dielectric rating 500 V AC 60 s tested by applying 625 V AC for 1 s between pins 2 to core inductance 3 3 uH 10 1 kHz 100 mV AC 0 mA DC 2 to 4 Ls saturation current 330 mA saturation current causes 20 roll off from initial inductance operating temperature range 40 C to 125 C UM10501 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 14 of 18 NXP Semiconductors UM1
6. 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 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 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 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 ap
7. 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 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 pr
8. for this circuit is shown in Figure 9 Table 3 shows the results when using a 4 7 uF capacitor for C2X and C2Y Table 3 Power factor adjustment valley fill circuit Vin V AC Vo Vavr lo mA R1 Q Efficiency Power factor THD 230 85 97 22 95 1 0 78 66 230 61 100 270 89 3 0 8 58 C2x C2Y aaa 000502 Fig 9 Valley fill circuit The valley fill circuit can only be employed if the output voltage is below half the peak input voltage At 230 V AC input it operates up to 85 V DC output voltage otherwise no power is delivered to the LEDs during the valley duration All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved Rev 2 16 November 2011 10 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 9 Active bypass An increased value for the inrush current resistor protects the board from damage with phase cut dimmers but lowers the efficiency If a higher power factor is not required but leading edge dimmer resistance and high efficiency are important the active bypass option is available In this circuit the inrush current resistor is bypassed using a Silicon Controlled Rectifier SCR see Figure 10 Table 4 shows the results when active bypass is used Table 4 Active bypass Vin V AC Vo Vavr lo mA R1 Q Efficiency Power factor THD
9. 0501 14 Board layout SSL21083 reference board user manual SSL 230V 6W Buck reference board 9352 959 27598 L21083DB01 oe i 8 Position UL logo a Bottom layer SSL 230V 6W Buck reference board 9352 959 27598 SSL21083DB01 Position UL logo 4H i 4 _ H cO NO e Or cr a s F RL a 230VAC LON hi e tz Os s SSL 230V 6W Buck reference board 9352 959 27598 SS L21083DB01 I aaa 000507 aaa 000508 b Top silk oe oo R e ee e e e R e e e z ee ee eee e e 3 e e aaa 000509 aaa 000510 d Drill mask c Bottom silk Fig 14 Board layout UM10501 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 15 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 15 Board photographs aaa 000511 a Front view aaa 000512 b Back view Fig 15 Photographs of the board UM10501 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 16 of 18 NXP Semiconductors UM10501 16 Legal information SSL21083 reference board user manual 16 1 Definitions Draft The document is a draft versi
10. 5 R6 Leak RSxR6 1 When the MOSFET is turned off inductor L2 is discharged and the current flowing through the inductor decreases When the current in the inductor reaches 0 mA the voltage on the DRAIN pin starts to oscillate because of the stray capacitance ringing SSL21083 waits for a valley of this oscillation The charge time of the inductor is calculated using Equation 2 2xIpep L2x 2 ch i V z VieD l i The discharge time of the inductor is calculated using Equation 3 tog L2 x 3 When the inductor is charging discharging a current flows through it However there is also an effective current when ringing Consider the oscillation frequency when adjusting the output current It is calculated using Equation 4 I eee 4 2x nx JL2x Crer C5 The time from the start of oscillation to the first valley is calculated using Equation 5 1 bok Se ring 2 X fring 5 The output current is calculated using Equation 6 The resulting output current is ta t ch dch lien 5 gt 2 peak i it t ch dch ring Therefore by changing Ipeak we can change leb All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 8 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 7 External OverTemperature Protection OTP UM10501 The SSL21083 supports external
11. OTP by adding an external Negative Temperature Coefficient NTC resistor This feature is delivered by detecting a voltage on pin NTC Pin NTC has an integrated current source The Resistance of the NTC resistor is decreased as the temperature is raised When the NTC temperature rises and the voltage on pin NTC falls below 0 5 V the SSL21083 lowers the threshold level for detecting peak current in the inductor Decreasing the peak current in the inductor causes the power current to decrease The output current is regulated to the point where a balance between temperature and output current can be retained the so called thermal management If the temperature on NTC increases continuously and the voltage on the pin drops below 0 3 V the SSL21083 starts the NTC time out timer If the voltage on pin NTC pin does not drop below 0 2 V within the time out the SSL21083 detects an abnormal condition and stops switching If the voltage reaches 0 2 V within the time out period a PWM signal is assumed An NTC resistor can be directly connected to pin NTC It is also possible to tune the protection temperature by adding a resistor in parallel or in series with the NTC One NTC and one resistor are installed on the reference board The values of these components can be changed depending on the protection temperature requirement and component availability The NTC should be mounted in thermal contact with the LED string All information provided in this doc
12. UM10501 SSL21083 reference board user manual Rev 2 16 November 2011 User manual Document information Info Content Keywords SSL21083 buck converter reference board LED driver LED retrofit lamp low power Abstract This document describes the performance technical data and the connection of the SSL21083 reference board The SSL2108 series is an NXP Semiconductors driver IC intended to provide a low cost small form factor LED driver This board is intended to operate at 230 V AC using an output voltage of 30 V or more NXP Semiconductors U M1 0501 SSL21083 reference board user manual Revision history Rev Date Description v 2 20111116 second issue Modifications e Section 9 Active bypass on page 11 minor text changes e Section 10 Known issues on page 12 section added v 1 20110908 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 UM10501 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 2 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 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 sho
13. actor adjustment 10 9 Active bypass 0 0 c cece eee eee 11 10 Known iSSues 0 200eee eee eee eee 12 10 1 Latch up on fast mains toggle 12 11 Sceh matic ssec randmeren waren aera ees 13 12 Bill of materials 000000 cee eee 13 13 Inductor appearance and dimensions 14 14 Board layout 0c eee eee eee eee 15 15 Board photographs 00 eee eee 16 16 Legal information 00ee eee e eee 17 16 1 Definitions 200 0 00005 17 16 2 Disclaimers 00000000 ee eeee 17 16 3 Trademarks 0 02000 eee eee 17 17 Contents sos bsiceis cece een eee dees 18 Please be aware that important notices concerning this document and the product s described herein have been included in section Legal information NXP B V 2011 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 16 November 2011 Document identifier UM10501
14. ck 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 The SSL21083 is a highly integrated switching mode LED driver which enables constant current driving from the mains input It is a solution for small LED retrofit lamp application especially for low power factor design The SSL21083 is a buck converter controller suitable for non isolated non dimmable LED retrofit lamps It can drive long LED strings with typically 70 V forward voltage The SSL2108 series is intended to operate with higher output voltages as present in modern LED modules Remark Unless otherwise stated all voltages are in V AC 2 Safety warning This demo board is connected to a high AC voltage Avoid touching the reference board during operation An isolated housing is mandatory when used in uncontrolled non laboratory environments Galvanic isolation of the mains phase using a fixed or variable transformer Variac is always recommended These devices are recognized by the symbols shown in Figure 1 OlO 019aab173 019aab174 a Isolated b Not isolated Fig 1 Variac isolation symbols UM10501 All information provided in this document is subject to legal d
15. isclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 3 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 3 Connecting to the board The board is optimized for a 230 V AC 50 Hz mains supply In addition to the mains voltage optimization the board is designed to work with multiple LEDs or an LED module with a high forward voltage Mains connection of this reference board is different from other general evaluation demo boards Connect the mains to the screw connector J6 Remark The maximum rated voltage of the board is 280 V limited by the value of electrolytic capacitor C1 or 400 V DC The anode of the LED load is connected to positive positions 1 to 3 of connector J5 The cathode is connected to negative 4 to 6 of connector J5 Use an LED string with a Vf greater than 20 volt on this board Under the expected conditions the output current is 96 mA If the rated current of the LED does not meet this specification the current can be adjusted See Section 6 for instructions J5 1 to 3 J5 4 to 6 aaa 000495 1 J6 connect the L of the AC mains supply 2 J6 connect the N of the AC mains supply 3 J5 1 to 3 Positive anode positions 4 J5 4 to 6 Negative cathode positions Fig 2 Board connection diagram UM10501 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights rese
16. oduct 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 16 3 Trademarks Notice All referenced brands product names service names and trademarks are the property of their respective owners NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 17 of 18 NXP Semiconductors U M1 0501 SSL21083 reference board user manual 17 Contents 1 Introduction 000 2c eee eee eee 3 2 Safety warning 0ce ee eee eee 3 3 Connecting to the board 4 4 Specifications o 2c00 etsces oben sd ean aaa 5 5 Performance data 200eeeeeeee 5 6 Changing the output current 8 7 External OverTemperature Protection OTP 9 8 Power f
17. on 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 16 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 conditions of commercial sale of NXP Semiconductors Right to make changes NXP Semiconductors reserves the right to make
18. plications 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 UM10501 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 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
19. rved User manual Rev 2 16 November 2011 4 of 18 NXP Semiconductors UM10501 4 Specification SSL21083 reference board user manual Table 1 Specifications for the reference board Parameter AC line input voltage output voltage output current Maximum power in to LED load Povtoad efficiency power factor board dimensions operating temperature Value 170 V AC to 260 V AC 20 V DC to 130 V DC 96 mA at Vo 92 V DC 12 5 W gt 94 0 6 0 5 17 5 mm x 53 5 mm x 17 5 mm 40 mm x 83 mm 40 C to 100 C Comment the board is optimized for 230 V AC 50 Hz 4 Vo 60 V DC to 120 V DC 96 mA at 10 W 70 V 96 mA output at 3 W 70 V 96 mA output length x width x height internal length x width external NTC threshold temperature 60 C onboard NTC activates above Tthntc 60 C IEC61000 3 2 compliant yes Po gt 8 5W IEC55015 compliant yes see Figure 7 and Figure 8 5 Performance data 110 aaa 000496 lo mA 106 102 98 94 90 30 50 70 90 110 130 Vout V DC UM10501 Fig 3 Load regulation output current as a function of output voltage All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 5 of 18 NXP Semiconductors UM10501 UM10501
20. ument is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 16 November 2011 9 of 18 NXP Semiconductors UM10501 SSL21083 reference board user manual 8 Power factor adjustment The SSL21083 IC and SSL21083 reference designs are designed for standard operation with a power factor of 0 6 at 230 V AC This choice offers highest efficiency It is possible to tune the power factor to higher values using two methods Increasing the value of R1 raises the power factor above 0 7 with additional losses see Table 2 Table 2 Power factor adjustment increasing the value of resistor R1 Vin V AC Vo Vavr lo mA R1 Q Efficiency Power factor THD 230 101 5 94 10 95 2 0 59 109 2 230 102 9 127 10 94 7 0 6 94 230 98 46 22 91 6 0 52 150 230 100 6 94 22 94 4 0 6 107 230 100 8 94 270 85 2 0 71 84 A resistor value of 270 for R1 also results in operation with most available phase cut dimmers without damaging the lamp or dimmer This change is not intended to reach stable operation without flicker or a good dimming range Dimension the power rating of R1 to handle peak powers that occur using leading edge dimmers These powers range between 2 W to 4 W Alternatively make a thermal link between the onboard NTC and R1 causing the board to turn off at overtemperature of R1 The second option is to increase power factor is using a valley fill circuit The basic schematic
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