onsemi NCV78763 Power Ballast and Dual LED Driver
onsemi NCV78763 Power Ballast and Dual LED Driver is a single-chip, highly efficient ballast and driver. It's designed for automotive front lighting applications like a high beam, low beam, daytime running light (DRL), turn indicator, fog light, static cornering, and so on. The NCV78763 is the best fit for high-current LEDs. It drives two strings up to 60V by two internal independent buck switch channel outputs, with minimum external components.
The output current and voltage can be customized according to the application requirements for each individual LED channel. A provided on−chip diagnostic feature for automotive front lighting eases the safety monitoring from the microcontroller. The device integrates a current−mode voltage booster controller, realizing a unique input current filter with a limited BOM.
More onsemi NCV78763 devices can be combined when more than two LED channels are required on one module, with the possibility for the booster circuits to operate in multiphase mode. This feature helps to further optimize the filtering effect of the booster circuit. It also allows cost-effective dimensioning for mid to high-power LED systems. Due to the SPI programmability, one single hardware setup can support multiple system configurations for a flexible platform solution approach.
Features
- Single-chip boost-buck solution
- Two LED strings up to 60V
- High current capability up to 1.6A DC per output
- High overall system efficiency
- Minimum of external components
- Active input filter with low current ripple from battery
- Integrated switched-mode buck current regulator
- Integrated boost current-mode controller
- Programmable input current limitation
- Average current regulation through the LEDs
Applications
- Front lighting high beam and low beam
- Automotive
- Daytime Running Light (DRL)
- Position or park light
- Turn indicator
- Fog light and static cornering
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