Overview
The NCV78763MW4R2G is a single-chip, highly efficient smart power ballast and dual LED driver designed for automotive front lighting applications. It is particularly suited for high current LEDs and provides a complete solution to drive two LED strings up to 60 V, using two internal independent buck switch channel outputs with a minimum of external components. The device integrates a current-mode voltage booster controller, an active input filter, and various diagnostic features, making it ideal for applications 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 | 1600 mA | mA | ||
| Switching Frequency | f_SW | 890 kHz | 1000 kHz | 1110 kHz | kHz |
| Thermal Resistance (SSOP36-EP) | θ_JCbot | 3.5 | °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.
- Active input filter with 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.
- SPI interface for dynamic control of system parameters.
- On-chip diagnostic features for safety monitoring.
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 NCV78763MW4R2G primarily designed for?
The NCV78763MW4R2G is designed for automotive front lighting applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and static cornering.
- How many LED strings can the NCV78763MW4R2G 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 input filter does the NCV78763MW4R2G integrate?
The device integrates an active input filter with low current ripple from the battery.
- Does the NCV78763MW4R2G support PWM dimming?
Yes, it supports integrated PWM dimming with a wide frequency range.
- How can the system parameters be controlled dynamically?
The system parameters can be controlled dynamically through an SPI interface.
- What is the thermal resistance of the SSOP36-EP package?
The thermal resistance of the SSOP36-EP package is 3.5 °C/W.
- Can multiple NCV78763 devices be combined for more than two LED channels?
Yes, multiple devices can be combined to support more than two LED channels, operating in multiphase mode to optimize the filtering effect.
- What is the typical system oscillator frequency?
The typical system oscillator frequency is 8 MHz.
- Does the NCV78763MW4R2G have on-chip diagnostic features?
Yes, it includes on-chip diagnostic features for safety monitoring in automotive front lighting applications.
