Overview
The NCV78763MW4AR2G is a single-chip, highly efficient smart power ballast and dual LED driver designed for automotive front lighting applications. It is part of the NCV78763 series from onsemi, tailored for high current LEDs and offers a comprehensive solution for driving two LED strings up to 60 V. The device features two internal independent buck switch channel outputs, requiring a minimum of external components. It is suitable for various automotive lighting functions such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and static cornering.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Battery Supply voltage | VBB | −0.3 | 60 | V | |
| LED supply voltage | VBOOST | −0.3 | 68 | V | |
| Logic Supply voltage | VDD | −0.3 | 3.6 | V | |
| MOSFET Gate driver supply voltage | VDRIVE | −0.3 | 12 | V | |
| Output Current per Channel | IOUT | 1.6 A | A | ||
| Switching Frequency | f_SW | 187 | 210 | 234 | kHz |
| Package Type | VFQFN-32-EP (5x5) | ||||
| Thermal Resistance (Package to Exposed Pad) | �Jcbot | 3.4 | °C/W |
Key Features
- Single-chip boost-buck solution for automotive front lighting applications.
- Drives two LED strings up to 60 V with high current capability up to 1.6 A DC per output.
- High overall system efficiency and minimum external components required.
- Integrated current-mode voltage booster controller with active input filter and low current ripple from the battery.
- Integrated switched-mode buck current regulator and boost current-mode controller.
- Programmable input current limitation and average current regulation through the LEDs.
- High operating frequencies to reduce inductor sizes.
- Integrated PWM dimming with a wide frequency range and low EMC emission for LED switching and dimming.
- SPI interface for dynamic control of system parameters.
- On-chip diagnostic feature for automotive front lighting, easing safety monitoring from the microcontroller.
Applications
- High beam and low beam headlights.
- Daytime Running Light (DRL).
- Position or park light.
- Turn indicator.
- Fog light and static cornering.
Q & A
- What is the NCV78763MW4AR2G designed for?
The NCV78763MW4AR2G is designed for automotive front lighting applications such as high beam, low beam, DRL, turn indicator, fog light, and static cornering.
- How many LED strings can the NCV78763MW4AR2G drive?
The device can drive two LED strings up to 60 V.
- What is the maximum output current per channel?
The maximum output current per channel is up to 1.6 A DC.
- What type of package does the NCV78763MW4AR2G come in?
The device comes in a VFQFN-32-EP (5x5) package.
- What is the thermal resistance of the package to the exposed pad?
The thermal resistance is approximately 3.4°C/W.
- Does the NCV78763MW4AR2G support SPI communication?
Yes, it supports SPI communication for dynamic control of system parameters.
- What is the switching frequency range of the device?
The switching frequency range is from 187 kHz to 234 kHz.
- Does the device have built-in diagnostic features?
Yes, it has on-chip diagnostic features for automotive front lighting, easing safety monitoring from the microcontroller.
- Can multiple NCV78763 devices be combined for more LED channels?
Yes, multiple devices can be combined to drive more than two LED channels, operating in multiphase mode to optimize filtering and cost-effectiveness.
- What is the logic supply voltage range for the NCV78763MW4AR2G?
The logic supply voltage range is from −0.3 V to 3.6 V.
