60V, 300W Hybrid Step-Down Module Bus Converter Features: Input Voltage Range: 30V to 60V (65V Abs. Max.) Wide Output Voltage: 4.5V to 18V (VOUT < VIN/2) 97.3% Peak Efficiency (12VOUT at 15A, 48VIN) ±1.5% Maximum Total DC Output Error Up to 300W Output Power Scalable: Parallel LTM4660s for Higher Power Fixed Frequency Current Mode Control Phase-Lockable External Synchronization from 200kHz to 1MHz Low Start-Up Inrush Current with Flying Capacitor Voltage-Balancing Prior to DC/DC Switching Action Output Voltage Tracking with Soft-Start Short-Circuit Protection with Adjustable Retry-Timer Overcurrent and Overtemperature Protection Onboard Diode Temperature Monitor Optional External Reference Input Power Good and FAULT Indicators 16mm × 16mm × 10.34mm BGA Package