UM10387 UBA2024AT SO14 18 W demo board Rev. 3 — 25 January 2011 User manual Document information Info Content Keywords UBA2024AT, half-bridge CFL driver, non-dimmable Abstract This document describes the correct use of the UBA2024AT half-bridge CFL driver demo boards for both 120 V and 230 V mains voltages and some circuit examples for up to 18 W UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board Revision history Rev Date Description v.3 20110125 third issue v.2 20100406 second issue v.1 20091001 first issue Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] UM10387 User manual All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 2 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 1. Introduction WARNING Lethal voltage and fire ignition hazard The non-insulated high voltages that are present when operating this product, constitute a risk of electric shock, personal injury, death and/or ignition of fire. This product is intended for evaluation purposes only. It shall be operated in a designated test area by personnel qualified according to local requirements and labor laws to work with non-insulated mains voltages and high-voltage circuits. This product shall never be operated unattended. Remark: Galvanic isolation of the mains phase using a variable transformer is always recommended. These devices can be recognized by the symbols shown in Figure 1. 019aaa691 019aaa690 a. Isolated Fig 1. b. Not isolated Variac isolation symbols 1.1 General description The UBA2024AT circuit is a half-bridge driver IC which has been set up to drive a standard PLC-18W, G24q-2 socket based lamp or similar lamp types with a nominal lamp power of 16.5 W. The total power drawn from the mains is about 18 W at a nominal mains voltage of 230 V (RMS); 50 Hz or 120 V (RMS); 60 Hz. The board can easily be configured to drive different Compact Fluorescent Lamps (CFL) of different power ratings as some design examples will show by changing the inductor tap and applying a different lamp capacitor. The UBA2024AT demo board is not recommended for driving lower voltage linear lighting lamps like the T5 or the T8. The UBA2021 is the optimal option for these type of lamps. The IC is able to drive lamps up to 22 W provided the maximum junction temperature of the IC is not exceeded. There are no THD requirements for mains powers lower than 25 W so that a preconditioning function is obsolete. The circuit is set up to perform a quasi preheat so the lamp will turn on approximately 0.7 s after the mains voltage has been applied to the board. For detailed design steps on the 18 W lamp solution or how to set-up lamps with other power ratings please consult the application note AN10713 “18 W CFL lamp design using UBA2024 application development tool and application examples”. Depending on the ordered board the mains voltage operating range is either set for 90 V to 130 V (RMS) or 200 V to 250 V (RMS). Both voltage range strappings have been incorporated in one layout of the board. This makes easier to set-up the same board with a different voltage range. UM10387 User manual All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 3 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board Since the IC was intended as a cost-effective solution to drive CFLs with an integrated ballast (CFLi), the IC is not equipped with a thermal protection or open lamp detection. As the demo board has been set up around a detachable lamp, a protection circuit has been added to it to set the IC to a safe mode of operation when no lamp is attached to the circuit. This circuit is not needed in a typical CFL application. Remark: If the UBA2024AT is used in a non-integrated ballast or a 'matchbox' type of ballast, the protection circuit is a requirement. UM10387 User manual All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 4 of 15 xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x 1.5 mH D1 K1 FS LLA WE-bobbin EF20 D2 CBUF1(1) 3 CHB1 100 nF 6 200 V 5 4 1 1 1 J1 J2 J3 RFUS(1) 2 3 6 4 11 7 CFS 10 nF OUT 8 1 14 UBA2024AT 1 2 3 MKDS 1,5/2 110 V (AC) K1-pin 2 pin 1 230 V (AC) K1-pin 2 pin 3 Rev. 3 — 25 January 2011 D3 CBUF2(1) CHB2 100 nF 200 V 2 9 10 PGND W1 GND 5 CDV 220 pF 500 V 12 13 VDD RC Rosc 200 kΩ SW R8 SGND1 RC 0Ω SGND2 CSW 220 nF SGND3 CVDD 10 nF Cosc 100 pF SGND4 GND SGND5 SGND6 SGND7 1N4007 1N4007(1) K3 1 VDD 2 MKDS 1,5/2 K2 R3 220 kΩ CLA 2.2 nF 1000 V 4 5 T1-2 BC847BPN 1 2 3 R6 R7 1 MΩ 1 MΩ 2 3 RC MKDS 1,5/2 D5 BAV70W (1)NOTE! design combines 110V (AC) and 230V (AC) 230 V (AC): RFUS = 10 Ω/1 W CBUF1 = 10 μF/400 V CBUF2 = wire bridge D1 to D4 are all mounted 1N4007 K1 mounted on position 2, 3 J1, J2, J3 are 0 Ω resistor jumpers J1 = 2.1 mH, default set for 18 W J2 = 2.7 mH J3 = 3.1 mH DO NOT short more than one jumper at the same time. 2 C11 3.3 μF R4 33 kΩ R5 180 kΩ 1 T1-1 BC847BPN C12 1 220 pF GND OPTIONAL "LAMP DETECTION CIRCUIT" 019aab074 Fig 2. Schematic diagram UM10387 5 of 15 © NXP B.V. 2011. All rights reserved. 120 V (AC): RFUS = 6.8 Ω/1 W CBUF1, CBUF2 = 22 μF/200 V D2 and D3 NOT mounted K1 mounted on position 1, 2 6 lamp inductor selection UBA2024AT SO14 18 W demo board All information provided in this document is subject to legal disclaimers. D4 nm nm 2 2 VDD NXP Semiconductors HV 2. Schematic diagram UM10387 User manual U1 LLA 1N4007 1N4007(1) UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 3. Specification 019aab075 Fig 3. UBA2024AT 230 V (AC) mains demo board 019aab079 Fig 4. UBA2024AT 120 V (AC) mains demo board The UBA2024AT demo board is set up to drive an 18 W burner with a G24q-2 type of socket. The specifications for this setup are: 230 V (AC): • • • • • • Input voltage range: 230 V (AC); 15 %; 50 Hz Input power: 18 W at 230 V (AC) Input current: 145 mA at 230 V (AC) Power factor: 0.54 Running frequency 44 kHz; start frequency 110 kHz 700 ms quasi-preheat 120 V (AC): • • • • • • Input voltage range: 120 V (AC); 15 %; 60 Hz Input power: 18 W at 120 V (AC) Input current: 255 mA at 120 V (AC) Power factor: 0.59 Running frequency 44 kHz; start frequency 110 kHz 700 ms quasi-preheat Protective functions: • No load and lamp removal protection by means of external protection circuit Burners: • Osram Dulux D/E 18 W; 4-pin; G24q-2 • Philips PL-C 18 W; 4-pin; G24q-2 UM10387 User manual All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 6 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board • General Electric F18DBX ECO 4P; G24q-2 Other burners that are electrically possible and safe to use: • • • • Osram Dulux T/E 18 W; 4-pin; Gx24q-2 Philips PL-T 18 W; 4-pin; Gx24q-2 General Electric F18TBX ECO 4P; GX24q-2 All T2 or T3 16.5 W burners with 80 V lamp voltage and 210 mA lamp current 3.1 Board connections The connection to the lamp is very straight forward as the Figure 5 and Figure 6 show. The board has been designed to accommodate layouts for 120 V (AC) or 230 V (AC) line voltages. An ordered board is preset for a certain line voltage. The labeling on the board for the mains voltage connector has been designed in such a way that the correct line voltage label becomes visible when the two way screw terminal block for the mains voltage is soldered to the proper position. When a board for a specific line voltage is ordered, the customer is free to set it up for a different line voltage. Ensure that the position of the two way screw terminal block is changed accordingly, so the correct mains voltage label is visible. C10 1 T2 D1 W1 GND CFL 1 C1 C2 + D4 D3 K2 K3 1 6 K1 R1 4 L1 D2 + 3 C4 C3 230 V (AC) 1 230 V AC Fig 5. UM10387 User manual 019aab076 Connecting the 230 V (AC) mains demo board All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 7 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board C10 1 T2 D1 K2 CFL 1 C1 C2 + D4 D3 W1 GND K3 1 6 K1 R1 4 L1 D2 + 3 C4 C3 110 V AC 1 110-120 V (AC) Fig 6. 019aab077 Connecting the 120 V (AC) mains demo board 3.2 Lamp inductor selection The inductor supplied with this board has been made to accommodate three inductors in one. This makes setting up the board for different lamp powers easier, since it is much easier to change the lamp capacitor than the lamp inductor. It also speeds up the design time (see Section 5 and the application note AN10713 “18 W CFL lamp design using UBA2024 application development tool and application examples”. Figure 5 shows how to select a different lamp inductor. The inductor can be set for 2.1 mH (default setting on delivery for the 18 W lamp), 2.7 mH, and 3.1 mH, The saturation current for the 2.1 mH inductor setting is 1.1 A at 125 C ambient. Remark: Only short one jumper, otherwise the inductor windings become shorted. 3.1 mH 2.7 mH 2.1 mH default setting 3322-029-91211 Fig 7. UM10387 User manual signal bottom side 019aab396 Selecting the lamp inductor by resistor programming on the bottom side of the board All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 8 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 3.3 Bill of materials 18 W lamp Table 1. 18 W lamp (16.5 W; 145 mA burner; requiring warm ignition; fO = 45 kHz) Reference Description Remarks 115 V; 60 Hz 230 V; 50 Hz RFUS fusible inrush current limiter resistor special type, fusible, high peak power 6.8 10 D1, D2 voltage doubler diodes - 1N4007 - D1, D4 bridge rectifier diodes - - 1N4007 high temperature electrolytic type 22 F; 200 V - high temperature electrolytic type - 10 F; 400 V CBUF1, CBUF2 buffer capacitors CBUF1 buffer capacitor LFILT filter inductor axial type 1.5 mH; 300 mA 1.5 mH; 300 mA CHB1, CHB1 half-bridge capacitors - 100 nF; 400 V 100 nF; 400 V CLA lamp capacitor high voltage polypropylene film type capable of withstanding peak voltages 2.2 nF; 800 V 2.2 nF; 800 V LLA lamp inductor E20 core for lamp powers up to 23 W; Würth electronic type: 760370084 (see Section 6); J1 = closed; J2 = open; J3 = open 2.1 mH 2.1 mH CDV dV/dt limiting capacitor - 220 pF; 500 V 220 pF; 500 V CFS floating supply buffer capacitor SMD: X7R type; leaded; PET type; high temperature 10 nF; 50 V 10 nF; 50 V CVDD low voltage supply buffer SMD: X7R type; leaded; PET type; high capacitor temperature 10 nF; 50 V 10 nF; 50 V COSC oscillator capacitor SMD: NP0 type; leaded: C0G type, preferably high accuracy value type 100 pF; 50 V; 2 % 100 pF; 50 V; 2 % ROSC oscillator resistor preferably E96 series high accuracy value 200 k; 1/8 W; type 1% 200 k; 1/8 W; 1% CSW sweep time capacitor SMD: X7R type; leaded; PET type; high temperature 220 nF; 50 V 220 nF; 50 V U1 CFL half-bridge driver IC NXP ordering code: 9352 895 91518 UBA2024AT UBA2024AT Table 2. Components values for the optional lamp detection circuit Reference Description Remarks Value R3 resistor preferably E24 series high accuracy value type 220 k; 0.125 W; 1% R4 resistor preferably E24 high accuracy value type 33 k; 0.125 W; 1% R5 resistor - 180 k; 0.125 W R6, R7 resistor - 1 M; 0.125 W C11 ignition time-out capacitor MLCC X7R type with a voltage rating 10 V 3.3 F; 10 V C12 capacitor ceramic or MLCC NP0 or leaded C0G type 220 pF; 16 V D5 double diode common cathode - Q1-1, Q2-2 PNP/NPN transistor in one package or use hfe > 100 at 10 A separate transistors. UM10387 User manual BC847BNP Q1-1 hfe > 100 at 10 A BC847B Q2-2 hfe > 100 at 10 A BC857B All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 9 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 4. Thermal considerations for the SO14 package As can be seen on Figure 3 and Figure 4 the board outline for the UBA2024AT in the SO14 package drawn on the demo board is T shaped. The reason for this shape is that an actual board with a similar shape is intended to be mounted vertically into a CFL lamp base. In this way distance is created between lamp filaments and the IC. In most situations, the PCB is mounted horizontally into a lamp base, but since the UBA2024AT is a SMD component this would mean the IC is very close to the lamp filaments. The lamp filaments would directly radiate heat onto the IC. This would limit the IC drive capabilities. It is recommended to either mount some form of heat shield in between the lamp filaments and the PCB or to mount the PCB in vertically into the lamp socket. This increases the distance between IC and Lamp filaments. Another solution is to mount the SMD components: CFS, CVDD, COSC, ROSC, CSW and the UBA2024AT onto a separate PCB and mount this PCB perpendicular onto a horizontal PCB under the lamp that contains all the leaded components. In this way the horizontal PCB serves as a shield between the lamp filaments and the heat sensitive components on the vertical PCB. 019aab162 Fig 8. UM10387 User manual Proposed board placement in a lamp for the UBA2024AT to reduce radiated heat to the IC All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 10 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 5. Examples of different lamp powers 5.1 8 W lamp Table 3. 8 W lamp (7 W; 150 mA burner; suited for cold ignition; fO = 46 kHz) Reference Description Remarks 115 V; 60 Hz 230 V; 50 Hz RFUS fusible inrush current limiter resistor special type, fusible, high peak power 10 D1, D2 voltage doubler diodes 1N4007 - D1, D4 bridge rectifier diodes - 1N4007 CBUF1,CBUF2 buffer capacitors high temperature electrolytic type 10 F; 200 V - CBUF1 buffer capacitor high temperature electrolytic type LFILT filter inductor axial type 2.7 mH; 200 mA 2.7 mH; 200 mA CHB1, CHB1 half -bridge capacitors 47 nF; 400 V 47 nF; 400 V CLA lamp capacitor high voltage polypropylene film type capable of withstanding peak voltages 1.5 nF; 800 V 1.5 nF; 800 V LLA lamp inductor E20 core for lamp powers up to 23 W; 3.1 mH Würth electronic type: 760370084 (see Section 6); J1 = open; J2 = open; J3 = short CDV dV/dt limiting capacitor CFS floating supply buffer capacitor 39 3.3 F; 400 V 3.1 mH 220 pF; 500 V 220 pF; 500 V SMD: X7R type; leaded; PET type; high temperature 10 nF; 50 V 10 nF; 50 V CVDD low voltage supply buffer SMD: X7R type; leaded; PET type; capacitor high temperature 10 nF; 50 V 10 nF; 50 V COSC oscillator capacitor SMD: NP0 type; leaded: C0G type, preferably high accuracy value type 180 pF; 50 V; 2 % 180 pF; 50 V; 2 % ROSC oscillator resistor preferably E24 series high accuracy value type 110 k; 1/8 W; 1 % 110 k; 1/8 W; 1 % CSW sweep time capacitor SMD: X7R type; leaded; PET type; high temperature 68 nF; 50 V 68 nF; 50 V 5.2 11 W lamp Table 4. 11 W lamp (9.5 W; 150 mA burner; suited for cold ignition; fO = 42.5 kHz) Reference Description Remarks 115 V; 60 Hz 230 V; 50 Hz RFUS fusible inrush current limiter resistor special type, fusible, high peak power 8.2 33 D1, D2 voltage doubler diodes 1N4007 - D1, D4 bridge rectifier diodes - 1N4007 CBUF1,CBUF2 buffer capacitors high temperature electrolytic type 15 F; 200 V - CBUF1 buffer capacitor high temperature electrolytic type - 4.7 F; 400 V LFILT filter inductor axial type 2.7 mH; 200 mA 2.7 mH; 200 mA CHB1, CHB1 half-bridge capacitors 47 nF; 400 V 47 nF; 400 V CLA lamp capacitor high voltage polypropylene film type 1.5 nF; 800 V capable of withstanding peak voltages 1.5 nF; 800 V UM10387 User manual All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 11 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board Table 4. 11 W lamp (9.5 W; 150 mA burner; suited for cold ignition; fO = 42.5 kHz) …continued Reference Description Remarks LLA lamp inductor E20 core for lamp powers up to 23 W; 3.1 mH Würth electronic type: 760370084 (see Section 6); J1 = open; J2 = open; J3 = short 115 V; 60 Hz CDV dV/dt limiting capacitor CFS floating supply buffer capacitor 230 V; 50 Hz 3.1 mH 220 pF; 500 V 220 pF; 500 V SMD: X7R type; leaded:; PET type; high temperature 10 nF; 50 V 10 nF; 50 V CVDD low voltage supply buffer SMD: X7R type; leaded:; PET type; capacitor high temperature 10 nF; 50 V 10 nF; 50 V COSC oscillator capacitor SMD: NP0 type; leaded: C0G type, preferably high accuracy value type 180 pF; 50 V; 2 % 180 pF; 50 V; 2 % ROSC oscillator resistor preferably E24 series high accuracy value type 120 k; 1/8 W; 1 % 120 k; 1/8 W; 1 % CSW sweep time capacitor SMD: X7R type; leaded:; PET type; high temperature 68 nF; 50 V 68 nF; 50 V 5.3 13 W lamp Table 5. 13 W lamp (12 W; 150 mA burner; suited for warm ignition; fO = 44 kHz) Reference Description Remarks 115 V; 60 Hz 230 V; 50 Hz RFUS fusible inrush current limiter resistor special type, fusible, high peak power 6.8 10 D1, D2 voltage doubler diodes 1N4007 - D1, D4 bridge rectifier diodes - 1N4007 CBUF1,CBUF2 buffer capacitors high temperature electrolytic type 10 F; 200 V - CBUF1 buffer capacitor high temperature electrolytic type - 6.8 F; 400 V LFILT filter inductor axial type 2.2 mH; 200 mA 2.2 mH; 200 mA CHB1, CHB1 half-bridge capacitors 100 nF; 400 V 100 nF; 400 V CLA lamp capacitor high voltage polypropylene film type 1.5 nF; 800 V capable of withstanding peak voltages 1.5 nF; 800 V LLA lamp inductor E20 core for lamp powers up to 23 W; 3.1 mH Würth electronic type: 760370084 (see Section 6); J1 = open; J2 = open; J3 = short 3.1 mH CDV dV/dt limiting capacitor CFS floating supply buffer capacitor 220 pF; 500 V 220 pF; 500 V SMD: X7R type; leaded; PET type; high temperature 10 nF; 50 V 10 nF; 50 V CVDD low voltage supply buffer SMD: X7R type; leaded; PET type; capacitor high temperature 10 nF; 50 V 10 nF; 50 V COSC oscillator capacitor SMD: NP0 type; leaded: C0G type, preferably high accuracy value type 100 pF; 50 V; 5 % 100 pF; 50 V; 5 % ROSC oscillator resistor preferably E24 series high accuracy value type 200 k; 1/8 W; 1 % 200 k; 1/8 W; 1 % CSW sweep time capacitor SMD: X7R type; leaded; PET type; high temperature 220 nF; 50 V UM10387 User manual All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 220 nF; 50 V © NXP B.V. 2011. All rights reserved. 12 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 6. Inductor specification 4 3 5 2 6 1 14 22 21 dimensions in mm 760370084 WE-MIDCOM 3, 3.81 SQ. 0.64 10 5.08 3 Ø 1.57 6 5 recommended P.C. pattern, component side 4 019aab080 Fig 9. Inductor specification Remark: The following electrical specifications are at 25 C unless otherwise specified. 6.1 D.C. RESISTANCE (at 20 C) • 3 to 6: 4.75 20 % • 6 to 5: 0.630 20 % • 5 to 4: 0.465 20 % 6.2 INDUCTANCE • 2.20 mH 10 %, 10 kHz, 100 m V (AC), 0 mA DC, 3 to 6, Ls • 2.70 mH 15 %, 10 kHz, 100 m V (AC), 0 mA DC, 3 to 5, Ls • 3.10 mH 15 %, 10 kHz, 100 m V (AC), 0 mA DC, 3 to 4, Ls 6.3 OPERATING TEMPERATURE RANGE • 40 C to +125 C including temp rise UM10387 User manual All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 13 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 7. Legal information 7.1 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. 7.2 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 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 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. UM10387 User manual 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. 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. 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 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. 7.3 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. All information provided in this document is subject to legal disclaimers. Rev. 3 — 25 January 2011 © NXP B.V. 2011. All rights reserved. 14 of 15 UM10387 NXP Semiconductors UBA2024AT SO14 18 W demo board 8. Contents 1 1.1 2 3 3.1 3.2 3.3 4 5 5.1 5.2 5.3 6 6.1 6.2 6.3 7 7.1 7.2 7.3 8 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 General description . . . . . . . . . . . . . . . . . . . . . 3 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . 5 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Board connections . . . . . . . . . . . . . . . . . . . . . . 7 Lamp inductor selection . . . . . . . . . . . . . . . . . . 8 Bill of materials 18 W lamp . . . . . . . . . . . . . . . . 9 Thermal considerations for the SO14 package. . 10 Examples of different lamp powers . . . . . . . . 11 8 W lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 11 W lamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 13 W lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Inductor specification . . . . . . . . . . . . . . . . . . . 13 D.C. RESISTANCE (at 20 ×C) . . . . . . . . . . . . 13 INDUCTANCE . . . . . . . . . . . . . . . . . . . . . . . . 13 OPERATING TEMPERATURE RANGE . . . . . 13 Legal information. . . . . . . . . . . . . . . . . . . . . . . 14 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 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: [email protected] Date of release: 25 January 2011 Document identifier: UM10387