This reference design offers power for automotive advanced driver assistance systems (ADAS), infotainment, and cluster applications. Operation is over the full automotive range including battery voltage surges to 60V. Two outputs are provided, 3.3V and 5V each handling loads to 20A. The design exhibits a peak conversion efficiency of 95.5% with 24V_IN and 93.9% at 48V_IN for the 5V output. Results demonstrate 5% output voltage undershoot and overshoot for a 15A step and dump. The test report includes operational data spanning over the full input range and includes bode plots to verify stability with ample margins, thermal images, and precompliance conducted emissions scans versus CISPR25 Class 5 limits.

• High current for advanced driver assistance systems (ADAS), infotainment, and cluster applications
• Peak conversion efficiency of 95.5% with 24V_IN and 93.9% at 48V_IN for the 5V output
• LM5143-Q1 provides two-output control and gate drive in a single IC
• Output voltage undershoot and overshoot 5% for 15A step and dump
• Conducted emissions scans (precompliance) versus CISPR25 Class 5 limits provided for 48V input and near full loading on both outputs