NCV78763 Power Ballast and Dual LED Driver for Automotive Front nd Lighting 2 Generation The NCV78763 is a single chip and high efficient smart Power ballast and Dual LED DRIVER designed for automotive front lighting www.onsemi.com applications like high beam, low beam, daytime running light (DRL), turn indicator, fog light, static cornering and so on. The NCV78763 is a best fit for high current LEDs and provides a complete solution to drive two strings up to 60 V, by means of two internal independent buck switch channel outputs, with a minimum of SSOP36 EP external components. For each individual LED channel, the output CASE 940AB 132 current and voltage can be customized according to the application requirements. An onchip diagnostic feature for automotive front QFN32 7x7 CASE 485J lighting is provided, easing the safety monitoring from the microcontroller. The device integrates a currentmode voltage booster 1 32 controller, realizing a unique input current filter with a limited BOM. QFN32 When more than two LED channels are required on one module, then CASE 488AM two, three or more NCV78763 devices can be combined, with the possibility for the booster circuits to operate in multiphasemode. This 132 helps to further optimize the filtering effect of the booster circuit and QFNW32 7x7 allows a cost effective dimensioning for mid to high power LED systems. 1 32 CASE 484AG Due to the SPI programmability, one single hardware setup can support QFNW32 5x5 CASE 484AB multiple system configurations for a flexible platform solution approach. Features MARKING DIAGRAMS Single Chip BoostBuck Solution Two LED Strings up to 60 V High Current Capability up to 1.6 A DC per Output High Overall System Efficiency NV78763x FAWLYYWWG Minimum of External Components Active Input Filter with Low Current Ripple from Battery Integrated Switched Mode Buck Current Regulator SSOP36 Integrated Boost Currentmode Controller Programmable Input Current Limitation 1 1 Average Current Regulation Through the LEDs N78763x N78763x High Operating Frequencies to Reduce Inductor Sizes AWLYYWWG FAWLYYWWG Integrated PWM Dimming with Wide Frequency Range Low EMC Emission for LED switching and dimming QFN32 QFNW32 SPI Interface for Dynamic Control of System Parameters These are PbFree Devices F = Fab Location A = Assembly Location WL = Wafer Lot Typical Applications YY = Year Front Lighting High Beam and Low Beam WW = Work Week Day time Running Light (DRL) G = PbFree Package Position or Park light Turn Indicator ORDERING INFORMATION Fog Light and Static Cornering See detailed ordering, marking and shipping information on page 45 of this data sheet. Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: October, 2018 Rev. 7 NCV78763/DNCV78763 VBB VDRIVE VBOOST VBOOSTBCK VBOOSTM3V VREG10V VBOOST AUXSUP VREGM3V IBCKxSENSE+ VDD VREG3V I sense IBCKxSENSE Buck regulator X 2 VINBCKx POWER STAGE Booster controller Level shifter VGATE Driver VFB Vsf Boost predrive Over BOOST PREDRV current LBCKSWx VREF detection IBSTSENSE+ V VDD REF I sense IBSTSENSE Comp OTA f BST gain VLEDx Fixed Toff COMP time BSTSYNC 5V input Channel selector LEDCTRLx V BOOST 5V input V BB 8 MUX SPI bus ADC V LED1 5V in / OD out V LED2 VDD VDD VDD VDD VDD POR3V OSC 8MHz BGAP TEMPdet BIAS Figure 1. Internal Block Diagram www.onsemi.com 2 level DIGITAL CONTROL Enable level