LM5170QPHPTQ1

The LM5170QPHPTQ1 is a cutting-edge high-voltage synchronous buck controller specifically engineered for automotive applications. With its impressive input voltage range of 4.5V to 65V, this controller is a perfect fit for various automotive systems such as eCall systems, telematics, infotainment, and advanced driver assistance systems. Its advanced 1.5MHz constant on-time control architecture ensures rapid transient response and exceptional efficiency during conversion processes. Built-in gate drivers for external N-channel MOSFETs further enhance efficiency and minimize power losses, making it an ideal choice for automotive battery systems

Key Features

• AEC-Q100 qualified for automotive applications:
  • Device temperature grade 1: –40°C to +125°C ambient operating range
  • Device HBM ESD classification level 2
  • Device CDM ESD classification level C4B
• Functional Safety-Capable
  • Documentation available to aid functional safety system design
• 100-V HV-port and 65-V LV-port max ratings
• 1% Accurate bidirectional current regulation
• 1% Accurate channel current monitoring
• 5-A Peak half-bridge gate drivers
• Programmable or adaptive dead-time control
• Programmable oscillator frequency with optional synchronization to external clock
• Independent channel enable control inputs
• Analog and digital channel current control inputs
• Programmable cycle-by-cycle peak current limit
• HV and LV port overvoltage protection
• Diode emulation prevents negative current
• Programmable soft-start timer
• MOSFET failure detect at start-up and circuit breaker control
• Multiphase operation phase adding or dropping