TPP60508 Non-Synchronous Step-Down DC-DC Voltage Converter

The TPP60508 is a 60-V,5-A output,nonsynchronous,step-down,switch-mode converter with integrated high-side power MOSFET.The TPP60508 employs current-mode control supporting simple external compensation and flexible component selection.It also supports low quiescent current mode with pulse-skipping and ultra-low sleep current.With integrated phase-locked loop,it can synchronize with external clock source with wide frequency selection,optimized for efficiency,physical dimensions,and electro-magnetic interference(EMI).Protection and diagnostic features protect the device as well as the system power supply.By using opendrain powergood output,the user system is able to distinguish if the output supply is within target voltage range.The soft-start feature,which controls the output ramping,can be set independently with external resistors to soft-start or sequencing/tracking mode.Current-limit,frequency foldback and over temperature protection improves system-level robustness.

　　Features

　　High Efficiency at Light Loads with Pulse Skipping

　　80-mΩHigh-Side MOSFET

　　160-μA Operating Quiescent Current and 1-μA Shutdown Current

　　100-kHz to 2.5-MHz Adjustable Switching Frequency

　　Integrated PLL to Synchronize with External Clock

　　Adjustable UVLO Voltage and Hysteresis

　　Under-voltage and Over-voltage Power Good Output

　　Adjustable Soft-Start and Sequencing

　　0.8-V 1.5%Internal Voltage Reference

　　10-Pin DFN4X4-10 with Exposed Pad Package

　　–40°C to 125°C Operation Temperature Range

　　Applications

　　=>12-V,24-V,48-V Industrial Power Application

　　=>Telecom&Communication Equipment Power Applications