EVBUM2114 - NCV7680 Evaluation Board User`s Manual - Digi-Key
Contents
1. Er D1 D24 Superflux Amber LED_SUPERFLUX oa Mill BLOO 0002 LED Lumileds C1 C2 2 Input 410 1210 KEMET C1210C105K3RACTU Output X7R Capacitor C3 1 Debounce 10nF 410 0805 AVX 08055C103KAT Yes Yes Capacitor 50V X7R C4 1 Loop 0 22uF 10 0805 Murata GCM21BR71H224KA37L Yes Yes Stabization 50V X7R Capacitor R1 R2 2 Logic I O 10k 1 0805 Yageo America RCO805FR 0710KL Yes Yes Resistor R3 1 Stop Current 3 09k 1 0805 Yageo America RCO805FR 073K09L Yes Yes Program Resistor R4 1 Tail Current 2 21k 1 0805 Yageo America RCO805FR 072K21L Yes Yes Program Resistor R7 1 VP Program 8 87k 1 0805 Yageo America RCO805FR 078K87L Yes Yes Resistor R5 R6 R8 VP Support 1 0805 Yageo America RCO805FR 071KL Resistor Jumper SIP10 Molex Waldom 22 28 4103 Posts SIP Electronics Corp 10 100mill spacing http onsemi com 9 NCV7680PWR22GEVB Table 4 BILL OF MATERIALS NCV7680PWR22GEVB Evaluation Board Manufacturer Substitution Designator Description Value Tolerance Part Number Allowed Pb Free J1 J15 Jumper Molex Waldom 22 28 4023 Posts Electronics Corp 100 mil spacing TP1 TP10 re Saar po TURRET Vector Electronics K24C M al Maal Posts Ballast FET NKK_3PDT_M2032 NKK of America M2032SS1W03 RO enable switch SPDT SW2 SW3 STOP Tail C amp K_7101 7101SYCQE control switch SPDT ON Semiconductor and ON are registered trademarks of Semiconductor Components Industries LLC SCILLC SCILLC reserves the r2. EVB Jumper 10 Using jumper 10 allows the use of one power supply for After removing jumper 10 connect 2 power supplies as both the Tail and STOP functions Removing J10 allows the shown in Figure 7 use of separate supplies for the Tail Input and the STOP Input E ja p al a Matta MOTERA on or E mi ast has Fi had 1 ae A HUY OSU ln 17 bora a HE kel q bat What O A130 13 24 Lett External Ballast FET Connected Right External Ballast FET Disconnected Figure 7 http onsemi com 6 NCV7680PWR22GEVB Jumpers 11 and 12 Jumpers 11 and 12 allow the user to program the LED output currents Remove the jumper to disconnect the PC board resistor and connect a different value Resistor values and resultant output programmed currents can be calculated using these design equations R OUTX 100 x STOP_BIAS Voltage Rstop Rstop BIAS Voltage 1 08 V typ ON Semiconductor xcv7esoc om Jumpers a Se i 11312 Figure 8 Programming Resistors http onsemi com 7 eq 1 Rza 4 X Rsrop X DC 0 1 eq 2 NCV7680PWR22GEVB Jumper 13 Jumper 13 disconnects the common top anode connection on the board edge Figure 10 highlights an alternative of the LED s connection Note two channels are shown in Figure 10 When used with jumpers 1 8 allows the user to drive disconnecting jumpers 1 2 and 13 This can be expanded external LED s Figure 9 highlights using the connect
3. INO rLno apou UONI UUOD 10enb y 1500g g sedwin an9 apou Buiwwesboid Tiy Ly Z 2dwnf Mle OldL apou Buiwwesboid dOLSH 11 sedwne e vu dOLS pue re 10 iddns auo o uonoauuoo ses smojy 0 Jadunf OVIC 40 no pue ul dn nd sayoyms 6 Jadwune 089ZA9N L O XLNO Pue dA USemjeq SG UMO ray Nd 0 19uuO sn9 ay ajgeuz g 1 siedunp x a olf Z quo aNd dvd3n yeoe SY 69 5 gt 8dl 810 6 8LNO Tv 8 O ur Z1NO or ZLNO dOLSH z lL FA 3 91NO LL 9LNO Ovid 9 n GINO zt SLNO dOLS gc ovid e ONS da y dl vLNO vl vLNoO SAU jse eg eno gt LNO dN 2 YOL ZLNO gt cLNO LLANO ky LLNO YOL dd cy ER ag 3 E 2 pe 9d al J C O C O cda er af or sr vr er cr Ir or Ldd MS O e Ou Qs Qs Qs Ou Os Qs Qs rm O dl IS 418 8 GdL X X X X X X X X Lu sir QO aJi H q31 SL aJi SL aJi we aai A aJi Ae aJi cz aJi AY vcd tead 81d Std cta 6d 9d ed 18dS MS o e e e e e e o e o e e e o e O ee p O mdu dOLS gt x x NS a aS AS S ans val ay AA d31 SL ay a ay E d31 PM dal SL ay AID q e 0 eza oza 210 vid Hd 8d cd cd ee oe oe oe ee ee ee ee o eoor YE O an oir X X X X X X X X SS A SN A CI A A AA OA a ile a gt cd e ca cA dan a da ih e00PvHIN 1SdS MS e e e e e e e o e O ae C cn SS6C0 LN gt Su E Sza 7 cMS ynduy eL a A YO epoiq dL Edi kdl 6dL O O e C r L dA dA dl 1 com fonsem Figure 2 NCV7680PWR22GEVB Schematic h
4. NCV7680PWR22GEVB NCV7680 Evaluation Board Users Manual Description The NCV7680 is an octal LED driver designed for automotive LED rear combination lamps External programmability of the NCV7680 allows the user to set the tail current and stop currents using a single resistor for each function An optional external FET is used to help distribute power for high power systems The Evaluation Board includes both an NCV7680 octal driver and NTD2955 FET A switch on the board allows the user to evaluate functionality with and without the FET The DIAG pin is brought out for reporting of open circuit conditions The LED s mounted on the demo board are jumpered giving flexibility for evaluating customer defined loads Part Features e Constant Current Outputs for LED String Drive e Open LED String Diagnostic with Open Collector Output e Soft Start Eliminates EMI Concerns e Low Dropout Operation for Pre Regulator Applications e External Modulation Capable DIAG ON Semiconductor http onsemi com EVAL BOARD USER S MANUAL On chip 1 kHz Tail PWM Dimming Single Resistor for Stop Current Set Point Single Resistor for Tail Dimming Set Point Overvoltage amp Overtemperature Set Back Power Limitation AEC Q100 Qualified 16 Lead SOW Exposed Pad Lead free Packaging Board Features e Tail Input Switch Outputs are in the PWM Mode e STOP Input Switch Outputs are 100 On e DIAG Output Open Circuits are
5. Reported e LED Isolation On board LEDs can be Removed with Jumpers for Alternative LED Evaluation e STOP Programming Current Programming Resistor can be Adjusted Externally by Jumper Removal e Tail Programming Duty Cycle Programming Resistor can be Adjusted Externally by Jumper Removal Figure 1 NCV7680PWR22GEVB Photo O Semiconductor Components Industries LLC 2012 May 2012 Rev 4 Publication Order Number EVBUM2114 D 40 PUS 6002 60 19qw 9 q eps upaM 34eq 0 Y3QY3H 9 lt 90q gt Yy jif nY 1aqwuny JUSWN90g ZI g nal nouid mau peoqouiap 089 ADN NCV7680PWR22GEVB onl SiO Oe NA or BR ew rm dN 1y6u 9 umoq ya no e preoq pears yd dA dA 0 S10 S1S91 g4 YM 134 Umoq 81N0 LLNO dA 0 g4 Yum Salas ul JO sISOY 134 ON dN vip 10 1nO uld dA Yum sanas ul G sedunf O 910 eLno Bulsa SQOEADN pue Bunsa punolb jo sso7 p Jadunf S
6. aim 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 laws and is not for resale in any manner PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT N American Technical Support 800 282 9855 Toll Free ON Semiconductor Website www onsemi com Literature Distribution Center for ON Semiconductor USA Canada P O Box 5163 Denver Colorado 80217 USA Europe Middle East and Africa Technical Support Order Literature http www onsemi com orderlit Phone 303 675 2175 or 800 344 3860 Toll Free USA Canada Phone 421 33 790 2910 ee q Fax 303 675 2176 or 800 344 3867 Toll Free USA Canada Japan Customer Focus Center For additional information please contact your local Email orderlit onsemi com Phone 81 3 5817 1050 Sales Representative EVBUM2114 D
7. cuit Testing http onsemi com 4 NCV7680PWR22GEVB Jumper 9 Jumper 9 disconnects the PC board pullup resistor and Figure 6 shows the test setup for using DIAG with a allows the user to interface with his own component and separate supply power supply to the DIAG pin Disconnect Jumper 9 Connect the external resistor to a separate supply The DIAG pin is limited to 45 V per the maximum ratings table Table 2 MAXIMUM RATINGS Voltages are with respect to device substrate VP Ballast Drive STOP DIAG DC 0 3 to 45 Peak Transient 45 Output Pin Voltage OUTX 0 3 to 45 Input Voltage RTAIL RSTOP FB 0 3 t05 Junction Temperature Ty 40 to 150 Peak Reflow Soldering Temperature Pb Free 260 peak 60 to 150 seconds at 217 C Note NO TAG Stresses exceeding Maximum Ratings may damage the device Maximum Ratings are stress ratings only Functional operation above the Recommended Operating Conditions is not implied Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability 1 DIAG is tested under the conditions shown below from the NCV7680 datasheet Table 3 ELECTRICAL CHARACTERISTICS 6 V lt VP lt 16 V V STOP VP RSTOP 3 09 kQ RTAIL 2 21 kQ 40 C lt Ty lt 150 C unless otherwise noted DNI E TI ET TT ETE DIAG OUTPUT CO ELIT ANETO ACT EZ IZ ETTETOTT EE AI dO IT Figure 6 DIAG Connection http onsemi com 5 NCV7680PWR22G
8. ight to make changes without further notice to any products herein SCILLC makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does SCILLC assume any liability arising out of the application or use of any product or circuit and specifically 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 cl
9. ions for all 8 channels A w W Aa E A rai Bu Bu Ae Eu Ee Be Ae AN Re BSN E BN Da Ta BS Lett External Ballast FET Connected Right External Ballast FET Disconnected Figure 9 External LED s AR Sarain eth SMicongucioi Left off NE LOF Right On Siena Left External Ballast FET Connected Right External Ballast FET Disconnected Figure 10 External LED s alt connection two channels shown http onsemi com 8 NCV7680PWR22GEVB Isolation of VP using jumper 13 will also allow the use of a boost converter to add additional headroom for more LEDs in a string See Figure 11 for setup DEA AS AOA ee En Boost Converter Left Off Wboost GND Right On What 13 24 Left External Ballast FET Connected Right External Ballast FET Disconnected Figure 11 Voltage Boost Jumper 14 Jumper 15 Jumper 14 is the ground connection for the NCV7680 Jumper 15 is a series connection for VP This can be used This can be used to measure ground current of the IC or test to measure the quiescent current of the NCV7680 Remove for loss of ground conditions jumper 15 and put an ammeter between the pins of the jumper Table 4 BILL OF MATERIALS NCV7680PWR22GEVB Evaluation Board Manufacturer Substitution Designator Description Value Tolerance Part Number Allowed Pb Free NCV7680 751R_02_B ON Semiconductor NCV7680PDWG SOW 16 epad D25 MRA4003 SMA_DIODE heme Semiconductor 5
10. ttp NCV7680PWR22GEVB Powering up the Board Equipment Needed 1 power supply 3 4 Amp 1 There are 15 jumpers on the board Start with all 15 jumpers connected Jumper locations are shown in Figure 3 A list of jumper functionality is shown in the board schematic Figure 2 Typical connections to the evaluation board are shown in Figure 4 i E i a ie ee be iF haere a ME al a thi y x pim 1 i F j Me Hl TO Bl U Ai E EE 13 ha LAS f Figure 3 Jumper Locations Lett Ort ail Right On 2 Position switch 1 SW1 for either external ballast connection left or no external ballast connection right 3 Connect the power supply 4 Toggle switch 2 SW2 for display of the PWM mode tail 5 Toggle switch 3 SW3 for display of 100 duty cycle STOP y h N Es Pa n fe Fo cor P i Pats a papal i AAA Wee SS TIA LV BOL ot Left External Ballast FET Connected Right External Ballast FET Disconnected Figure 4 Power Connections http onsemi com 3 NCV7680PWR22GEVB Jumpers 1 8 Jumpers 1 8 highlight the open circuit functionality of diagnostic pin DIAG Monitor DIAG while creating an open circuit by removing any on these jumpers 1 8 DIAG functionality will conform to the variables shown in Table 1 Table 1 DIAG Functionality OUTX rs Tail Input 1 DIAG State HighZ PAM EE e m a n i me Lote eee Ti mau La Ll LY Ooo Ls j d re E i Figure 5 Open Cir
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