UM10797 - NXP Semiconductors
Contents
1. L 0 100 200 300 f MHz Fig 12 EMI performance Radiation Emission SE 8 Protections 8 1 Bus OverVoltage Protection OVP Additional protections are embedded to provide input overvoltage protection R2 R3 R4 R5 ZD1 Q2 for the boost stage see Figure 13 The input overvoltage protection switches off the IC when the bus voltage on C1 is too high If the bus voltage exceeds the OVP set point 282 V it pulls down the VCC voltage The limit can be tuned by adjusting the ratio between R2 R3 and R4 The limit must be tuned below the maximum voltage rating of the IC The protection automatically restarts when the input voltage is reduced ITI aaa 012559 Fig 13 Bus overvoltage protection UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 11 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 8 2 Boost OverCurrent Protection OCP If the boost peak current exceeds Vi R8 Vin is the threshold voltage of Q3 and D7 see Figure 14 the overcurrent protection in the boost stage R8 Q3 D7 pulls down the VCC voltage This circuit is not active under typical conditions However the circuit is required because the IC cannot detect boost stage peak currents in this topo2. UM10797 a SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter Rev 1 28 May 2014 User manual Document information Info Content Keywords SSL5015DB1201 non dimmable LED driver boost buck dual stage converter TLED Low Total Harmonic Distortion LTHD Low Ripple LR Abstract This document describes the operation of a 120 V 18 W non dimmable LED driver featuring the SSL5015 using a boost buck dual stage topology The SSL5015DB1201 demo board has a form factor that is compatible with the base of a T8 LED lamp fitting used in Solid State Lighting SSL applications NXP Semiconductors UM10797 Revision history SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter Rev Date Description v 1 20140528 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 UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 2 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 1 Introduction WARNING Lethal voltage and fire ignition hazard The non insulated high voltages that are present when operating this product constitute a r
3. term numbers for reference only y Dimensions in mm a A 2 54 3 81 min 8 89 max Fig 18 Boost inductor layout and dimensions lot code and date code 1 32 e ro dot locates term 1 1 o 3 75 i i roe poo recommended p c pattern component side aaa 012568 Table 3 L2 boost inductor specifications Parameter Value Test conditions Electrical specifications DC resistance 2 6 maximum 1 327 Q at 20 C inductance 2 6 0 9 mH 5 50 kHz 100 mV AC 1 s General specifications operating temperature range 40 C to 125 C incl temperature increase All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 16 of 19 NXP Semiconductors UM10797 UM10797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 12 2 L3 buck inductor part must insert fully to surface A in recommended grid 0 51 sq 8x term numbers for reference only eee Dimensions in mm A 2 54 3 81 min 8 89 max lt Fig 19 Buck inductor layout and dimensions lot code and date code 1 32 N ey dot locates term 1 750342303 o 3 75 i
4. a na naunau 8 7 5 Ripple and THD 0000 08s 9 7 6 ElectroMagnetic Interference EMI 9 8 ProtectionS 2 0 c cece eee eee 11 8 1 Bus OverVoltage Protection OVP 11 8 2 Boost OverCurrent Protection OCP 12 8 3 Output OverVoltage Protection OVP 12 9 Schematic 2 220080000c0e2e cence 13 10 Bill Of Materials BOM 14 11 Board layout 00 c cece eee eee 15 12 Inductor specification 00 0000s 16 12 1 L2 boost inductor 05 16 12 2 L3 buck inductor 2 2 0055 17 13 Legal information 00 0eseeeee 18 13 1 Definitions 0000000 eee eee 18 13 2 DisclaimerS 0000200 cece eee eee 18 13 3 Trademarks 0000000 cece eee 18 14 Contents s 0 cee cewie pia pi eee aed pina 19 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 2014 All rights reserved For more information please visit http Awww nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 28 May 2014 Document identifier UM10797
5. m od oe oe recommended p c pattern component side aaa 012569 Table 4 L3 buck inductor specifications Parameter Value Test conditions Electrical specifications DC resistance 1 6 maximum 1 221 Q at 20 C inductance 1 6 1 0 mH 5 50 kHz 100 mV AC 1s General specifications operating temperature range 40 C to 125 C incl temperature increase All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 17 of 19 NXP Semiconductors UM10797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 13 Legal information 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 f
6. 1 1206 R3 resistor 432 kQ 1 1206 R4 resistor 30 1 KQ 1 0603 R5 resistor 20 kQ 1 0603 z R6 R13 resistor 1 8 Q 1 0805 R7 resistor 47 Q 5 0603 a R8 resistor 1 Q 1 1206 R10 R15 resistor 510 Q 5 1206 R11 resistor 100 kQ 5 0805 R12 resistor 30 Q 1 W 5 2512 R14 resistor 20 kQ 5 1206 a z U1 IC SSL5015TE HS08 SSL5015TE NXP Semiconductors ZD1 Zener diode SOD323 BZX384 B6V8 NXP Semiconductors ZD2 Zener diode SOD323 BZX384 C75 NXP Semiconductors UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 14 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 11 Board layout aaa 012566 a Top view aaa 012567 b Bottom view Fig 17 120 V 18 W TLED LTHD low ripple dual stage converter with SSL5015DB1201 demo board layout UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 15 of 19 NXP Semiconductors UM10797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 12 Inductor specification UM10797 12 1 L2 boost inductor part must insert fully to surface A in recommended grid 0 51 sq 8x
7. its lowest value This feature reduces switching losses It also greatly benefits the EMI performance of the LED driver The switching point follows immediately after the buck stage Both inductors in this circuit are sensitive to other magnets So to optimize the EMI performance an outer shielding has been added on both inductors This shielding ensures better EMI performance over frequency ranges are gt 300 kHz UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 9 of 19 NXP Semiconductors U M1 0797 UM10797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter aaa 012556 120 80 Oe e 40 ii Hits iii Nba iim A af NW al ih Ibi nian T I EEE E O aCA 1 SN AU HA I AU 103 102 101 10 102 f MHz Fig 10 EMI performance Conduction Emission CE L phase aaa 012557 Fig 11 EMI performance Conduction Emission CE N phase All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 10 of 19 NXP Semiconductors U M1 0797 SL5015DB1201 120 V 18 W low THD low ripple dual stage converter aaa 012558 60 noise level dBuV m 40 20
8. 6 5 mm 5 Team aaa 012506 Fig 2 SSL5015DB1201 board dimensions UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 4 0f 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 4 Board photographs aaa 012510 b Bottom view Fig 3 _SSL5015 18 W demo board 5 Board connections The board is optimized for a 120 V 60 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 Remark The maximum rated voltage of the board is 132 V AC The anode of the LED load is connected to the LED connector The cathode is connected to the LED connector Use an LED string forward voltage of up to 60 V on this demo board Under the expected operating conditions the output current is 260 mA aaa 012511 Fig 4 _SSL5015DB1201 board connections UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 5 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 6 Functional description UM10797 6 1 In this application the SSL5015 is used in a double stage boost b
9. OZL LOZLAASLOSTISS Z620 LNN SIOJONPUODIWIS dXN NXP Semiconductors UM10797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 10 Bill Of Materials BOM Table 2 SSL5015DB1201 bill of materials Reference Description and values Part number Manufacturer BD1 bridge rectifier MB6S z CX1 X capacitor 10 nF pitch 10 mm C1 capacitor 10 uF 400 V pitch 5 mm NCC 10 x 20 mm C2 capacitor 68 uF 100 V pitch 5 mm Rubycon 10x 16mm C3 capacitor 68 pF 630 V 1206 GRM31A7U3A680JW31D Murata C4 capacitor 1 uF 50 V 0805 C5 capacitor 0 1 uF 25 V 0603 C6 capacitor 22 nF 250 V pitch 7 5 mm z C7 capacitor 100 nF 250 V pitch 7 5 mm C8 capacitor 4 7 nF 630 V 1206 GRM31BR72J472KWO1L Murata D1 D3 D4 diode ES1J SMA D6 diode SOD128 PMEG3020BEP NXP Semiconductors D7 diode SOD323 1N4148 F1 fuse 250 V AC 1 A pitch 5 mm L1 inductor 2 2 mH lsat 0 35 A 8 x 10 mm 744 772 022 2 W rth Elektronik L2 inductor 900 uH 5 EFD15 L3 inductor 1 mH 5 EFD15 L4 inductor 4 7 mH lsat 0 25 A 8 x 10 mm 744 772 472 W rth Elektronik L5 inductor 240 uH 7Ts T8 x 4 2 x 3 8 mm MOV1 varistor 241KD07 Q2 Q3 transistor SOT23_123 BC847 NXP Semiconductors Q4 thryristor TO92 BT169D NXP Semiconductors R2 resistor 475 KQ
10. ages 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 their respective owners GreenChip is a trademark of NXP Semiconductors N V NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 18 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 14 Contents 1 Introduction 1 2 00 e eee eee 3 2 Safety warning 00 e cece cere eee 3 3 Specifications 00 c eee eee eee 4 4 Board photographs 0 0005 5 5 Board connections 00e0ee ee eeee 5 6 Functional description 00000 6 6 1 PF and THD performance 6 7 Performance 0c cece eee eee eee 7 7 1 EMClenCy 2 sich ae arius ep na Ee DS 7 7 2 Power factor ers cote eee ek eee eee ees 7 7 3 Line regulation 0 0 e ee eee 8 7 4 Load regulation
11. d non laboratory environments Galvanic isolation from the mains phase using a fixed or variable transformer is always recommended Figure 1 shows the symbols that identify the isolated and non isolated devices 019aab173 019aab174 a Isolated b Not isolated Fig 1 Variable transformer variac isolation symbols UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 3 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 3 Specifications Table 1 contains the SSL5015DB1201 demo board specifications Table 1 SSL5015DB1201 specifications Symbol Parameter Value V mains AC mains supply voltage 120 V VLED output voltage 60 V ILED output current 260 mA Al_ep AVLED output voltage rejection 3 mA 15 V n efficiency gt 87 PF Power Factor 0 96 THD Total Harmonic Distortion lt 30 Toper operating temperature 40 C to 100 C fsw switching frequency 70 kHz lo ripple ripple output current 7 16 mA 1 The ripple current can be reduced by using a larger bus capacitor or output capacitor For example with a 100 uF capacitor at output the ripple current can be reduced around 5 at rated voltage input Figure 2 shows the dimensions of the SSL5015DB1201 demo board 1
12. ductors 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 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 UM10797 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 defau
13. isk 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 This document describes the operation of a 120 V 18 W non dimmable LED driver featuring the SSL5015 The SSL5015DB1201 demo board has a form factor that is T8 LED lamp compatible The boost buck dual stage converter topology provides a simple and efficient solution that achieves low input THD and low output ripple with a small output buffer capacitor The total input power VA of the board is 18 6 W at 120 V 155 mA The demo board is designed to drive an LED load delivering an output power of 15 6 W at 60 V 260 mA The power factor PF is 0 96 which gives an actual input power of 0 96 x 18 6 W 17 86 W The resulting efficiency is gt 87 The demo board complies with EMI and safety regulations Figure 2 shows the SSL5015DB1201 demo board dimensions The design and the components used ensure that the board fits into a T8 lamp base 2 Safety warning The SSL5015DB1201 demo board input is connected to the 120 V 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 uncontrolle
14. logy GND1 DRAIN DVDT aaa 012561 Fig 14 Boost overcurrent protection 8 3 Output OverVoltage Protection OVP The voltage rating of the output capacitor can be limited to 100 V However extra components ZD2 Q4 R11 R12 are then required to protect the output capacitor against possible high voltages see Figure 15 The circuit provides a low impedance path if the output voltage exceeds the breakdown voltage of Zener diode ZD2 The IC detects this low impedance as a short at the output and activates the output short protection latched protection LED Q4 C2 BT169D 68 uF 100 V R12 300 LED aaa 012562 Fig 15 Output overvoltage protection UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 12 of 19 jenuew J39sp vlog Aew gz L 3H SJ UIE OSIP ea 0 JOSINs S JUBWNDOP S14 UI PEPIAOI UONEWOJUI y 6L JO EL Z6ZOLWN pamasa SUSU Ily Y LOZ AN S4O ONPUODIWES AXN 9 Schematic LED 510Q 5100 D6 PMEG3020BEP ZA Fig 16 120 V 18 W TLED LTHD_LR dual stage converter with SSL5015DB1201 demo board schematic 1mH aaa 012563 49 19AU0D abe s jenp ajddii MO AHL MOI M 8L A
15. lt 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 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 t
16. o 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 for dam
17. oad regulation aaa 012536 0 265 0 264 0 263 0 262 0 261 Vo V Fig 8 Output current as a function of output voltage UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 8 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 7 5 Ripple and THD 30 00 aaa 012537 Ripple THD 25 00 2 20 00 15 00 10 00 5 00 90 100 108 120 132 Vi v 1 Output ripple 2 Input THD Fig 9 Output ripple and input THD as a function of input voltage Remark To increase the bus voltage reduce the L2 boost inductance L3 buck inductance ratio The reduction ensures better output ripple performance in 100 V AC applications 7 6 ElectroMagnetic Interference EMI EMI was measured according to the EN55015 standard The SSL5015DB1201 demo board complies with the requirements of the standard see Figure 10 to Figure 12 The SSL5015 series operates as a boundary conduction mode converter A special feature called valley detection is an integrated part of the SSL5015 series circuitry Dedicated built in circuitry connected to the DRAIN pin senses when the voltage on the drain of the switch has reached
18. or 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 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 Semicon
19. uck topology instead of in the designated buck topology for two reasons e With a boost stage at the input side the input capacitance of the system can be kept to a minimum allowing a high power factor e With a buck stage at output side the output ripple can be low because the bus voltage supplied by the preceding boost stage is stable When using the boost buck application only one switching FET is required to draw current through the boost and buck stages The switching current in both stages flows through the same switching FET The IC senses the current through the sense resistor R6 R13 and switches off when it reaches the peak value Most of the current in the sense resistor flows mainly through the output LEDs The boost current follows a different return path through resistor R8 It only slightly effects the peak current through the sense resistors So the output current can be calculated in the same way as with an SSL5015 buck converter PF and THD performance The SSL5015DB1201 demo board is designed for high power factor operation PF gt 0 95 at 120 V AC and low THD performance THD lt 30 at 120 V AC The return current of the boost stage shapes the input current waveform So PF and THD depend on the ratio between the boost inductor L2 and the buck inductor L3 A ratio of L2 L3 that is smaller generally provides a higher PF and a lower THD However it also causes a higher bus voltage which challenges the IC
20. voltage rating So keep the inductor value accuracy of both within 5 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 6 of 19 NXP Semiconductors UM10797 7 Performance SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 7 1 Efficiency n Fig 5 88 00 87 50 87 00 86 50 86 00 85 50 85 00 84 50 aaa 012533 90 100 108 120 132 Vi V AC Efficiency as a function of mains input voltage AC 7 2 Power factor PF Fig 6 0 970 0 965 0 960 0 955 0 950 0 945 0 940 aaa 012535 90 100 108 120 132 Vi V AC Power factor as a function of mains input voltage AC UM10797 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2014 All rights reserved User manual Rev 1 28 May 2014 7 of 19 NXP Semiconductors U M1 0797 SSL5015DB1201 120 V 18 W low THD low ripple dual stage converter 7 3 Line regulation 0 264 aaa 012534 A 0 262 0 260 0 258 0 256 0 254 90 100 108 120 132 Vi V AC Fig 7 Output current as a function of mains input voltage AC 7 4 L
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