EVBUM2141 - NCP5181 36 W Ballast Evaluation Board User`s
Contents
1. 0 Vac This jumper is used to build a n the table below voltage doubler just after the bridge diode in case 5 If you get the correct output and input voltage you E EE ee can then connect a 36 W fluorescent tube on the 2 Connect the test setup as shown in Figure 7 output see Figure 8 e AC Source Table 2 TEST RESULTS ImputMains a VN iA load Arms European Removed 230 V 278 mA 303 V 370 mA Input Connection ie hy SI O z 2 BALL a z d Output Connection Figure 8 Ballast Connection www BD PT tom ON NCP5181BAL36WEVB Table 3 BILL OF MATERIAL FOR THE NCP5181 EVALUATION BOARD Designator CIC Mirin O Ml a X S K G N C1 C2 OIO C5 C6 C7 C8 C9 C10 11 C12 C13 C14 C15 C16 C17 C 1 O D3 D5 D6 D SEO R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 Q1 Q2 Q3 Q4 B1 J1 c N x o Qty 2 N I S 7 I 3 1 2 2 N aas on Value Tolerance Part Number Analog Timer Texas Instruments naa _ Semiconductor 1 A 400 V ON Semiconductor 8 A 500 V TO220 International IRF840LC Rectifier 100 mA 45 V TO 92 ON Semiconductor BC547BG Description NCP5181 CMOS IC Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Electrolytic Capacitor Zener Diode High speed Diode Recti2. 4ug g 97048481 via ONS GND ONE CH OH A SLO A00r 49dozz sa pl S Hdg 3d81 ZLo qZvSogd pi 1svi1va L8LSdON ONG rO zn re OT Atiq UND Hut L MUA ebpug O1 NI IH ANO IH NI OO 9710 848l LO Figure 5 Evaluation Board Schematic DIUOSPUEJ alas IDA A 00b Jadun sn An y FA zr LO tluoseueqg Wauae An A 00t 9040 an Z LO L L Ld tom ON IL CO e www BD TT NCP5181BAL36WEVB 1540 Mil l g G WW ON Seniconduct Toul puse C d 204 op 01 Hea an i d i Kate m 198 Gi i A RE TU e 1891198 p4eog owag 81GdIN Figure 6 PCB Printout Top and Bottom View www B D Pt tom ON NCP5181BAL36WEVB TEST PROCEDURE a 3 VI U e 8 i zim 3 RLoad ir Bei A A q 2 200 Q 8 Ze Dego b ard 2 J2 Jumper Figure 7 Test Setup Connection Table 1 REQUIRED EQUIPMENT AC Power Source can be able to deliver 230 Vims or 110 Vims Two Volt meters Two Ampere meters 1 Resistive Load 200 0 50 W One NCP5181 Evaluation Board Test Procedure Voltmeter and Ampmeter on the Load 1 First of all check if you need jumper 2 J2 on the Load on the Output board close the diode bridge This jumper must be 3 Apply 230 Vac for European mains or 110 Vac for removed for use with European mains 230 Vac US mains on the input connector input voltage and must be in place when using 4 Check ILoag and VLoaq With the appropriate value US mains 11
3. NCP5181BAL36WEVB NCP5181 36 W Ballast Evaluation Board User s Manual Description This document describes how the NCP5181 driver can be implemented in a ballast application The scope of this evaluation board user s manual is to highlight the NCP5181 driver and not to explain or detail how to build an electronic ballast The NCP5181 is a high voltage power MOSFET driver providing two outputs for direct drive of two N channel power MOSFETs arranged in a half bridge or any other high side low side topology configuration It uses the bootstrap technique to ensure a proper drive of the high side power switch The driver works with two independent inputs to accommodate with any topology including half bridge asymmetrical half bridge active clamp and full bridge Evaluation Board Specification Input Range 85 145 Vac OR 184 265 Vac Ballast Output Power 36 W type PL L 36 W e Pre heating Current 295 mA e Pre heating Time 1 second Nominal Current 414 mA Beer Or __8 NCP5181 ne ON Semiconductor http onsemi com EVAL BOARD USER S MANUAL Detailed Operation The lamp ballast is powered via a half bridge configuration The two power MOSFETs are driven with the NCP3181 driver The driver is supplied by the Vcc rail and the high side driver is supplied by the bootstrap diode when the low side power MOSFET Q2 is switched ON the BRIDGE pin is pulled down to the ground thus the capacitor
4. connected between the BRIDGE pin and VBOOT pin is refuelled via the diode D3 and the resistor R5 connected to Vcc When Q2 is switched OFF the bootstrap capacitor C6 supplies the high side driver with a voltage equal to Vcc level minus D3 forward voltage diode Given the NCP5181 architecture it is up to the designer to generate the right input signal polarity This includes a dead time to avoid a short circuit between the high and low side power MOSFET The 555 timer generates only one signal for the driver the second one in opposite phase is built by inserting an NPN transistor Q4 for inverting the signal Afterwards the dead time is built with R2 D2 and C13 typically 260 ns see Figure 2 3 ON Semi conductor Figure 1 NCP5181 Evaluation Board WARNING BEFORE PLUGGING IN THE EVALUATION BOARD MAKE SURE THE JUMPER IS IN THE CORRECT POSITION IF J2 IS USED THEN Vin MUST BE LOWER THAN 145 Vac w D TIC com O da une October 2012 Rev EVBUM2141 D NCP5181BAL36WEVB 5 V div DRV_HI 10 V div IN LO 10 V div A Time ore ie 4 us div Figure 3 Input Output Timing Diagram Tube Voltage 100 V div Tube Power 50 W div TubeAverage power 32 W Ct Man fy TC Eue SONE Size Ct w 3 Of bit ST 10 Oye Figure 4 Tube Signals nt o Cns mi com a NCP5181BAL36WEVB ON AUUE jUOGG 89 AUUE Juce I ONE ONG ONG A A N JEGON L YOL Se Mit 64 106 DESEN L
5. fically disclaims any and all liability including without limitation special consequential or incidental damages Typical parameters which may be provided in SCILLC data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including Typicals must be validated for each customer application by customer s technical experts SCILLC does not convey any license under its patent rights nor the rights of others SCILLC products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application Buyer shall indemnify and hold SCILLC and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part SCILLC is an Equal Opportunity Affirmative Action Employer This literature is subject to all applicable copyright law
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