Overview
The NCV78763MW0R2G is a single-chip, highly efficient smart power ballast and dual LED driver designed specifically for automotive front lighting applications. This device is optimized for high current LEDs and provides a comprehensive solution to drive two LED strings up to 60 V, utilizing two internal independent buck switch channel outputs with a minimal number of external components. The NCV78763MW0R2G is suitable for various automotive lighting functions such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and static cornering. It features on-chip diagnostics, a current-mode voltage booster controller, and an active input filter, all of which contribute to high overall system efficiency and low electromagnetic interference (EMI).
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 | 3.15 | 3.6 | V |
| MOSFET Gate Driver Supply Voltage | VDRIVE | −0.3 | 12 | V | |
| Output Current per Channel | I_O Max | 1600 mA | mA | ||
| Switching Frequency | f_SW Typ | 350 kHz | kHz | ||
| Thermal Resistance (SSOP36-EP) | �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 low EMI emission.
- Minimum of 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.
- SPI interface for dynamic control of system parameters.
- On-chip diagnostic features for safety monitoring.
Applications
- Automotive front lighting: high beam, low beam, daytime running light (DRL), turn indicator, fog light, and static cornering.
- Position or park light.
- Multi-LED channel configurations by combining multiple NCV78763 devices.
Q & A
- What is the primary application of the NCV78763MW0R2G?
The NCV78763MW0R2G is primarily 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 NCV78763MW0R2G drive, and what is the maximum voltage?
The NCV78763MW0R2G can drive two LED strings up to 60 V.
- What is the maximum output current per channel for the NCV78763MW0R2G?
The maximum output current per channel is up to 1.6 A DC.
- Does the NCV78763MW0R2G have any on-chip diagnostic features?
- How can multiple LED channels be supported if more than two are required?
Multiple NCV78763 devices can be combined to support more than two LED channels, allowing for multiphase operation of the booster circuits.
- What interface is used for dynamic control of system parameters?
The SPI interface is used for dynamic control of system parameters.
- What is the typical switching frequency of the NCV78763MW0R2G?
The typical switching frequency is around 350 kHz.
- Does the NCV78763MW0R2G have integrated PWM dimming capabilities?
- What is the thermal resistance of the SSOP36-EP package?
The thermal resistance of the SSOP36-EP package is approximately 3.5 °C/W.
- Can the input current limitation be programmed?
