TPS40195PW Datasheet

DC/DC Switching Controllers


The TPS40195PW is a flexible synchronous buck controller that operates from a nominal 4.5 V to 20 V supply. This controller implements voltage mode APPLICATIONS control with the switching frequency adjustable from 100 kHz to 600 kHz. Flexible features found on this device include selectable soft-start time, programmable short circuit limit, programmable undervoltage lockout (UVLO) and synchronization capability. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Over-current detection is done by sensing the voltage drop across the low-side MOSFET when it is on, and comparing it with a user programmable threshold. TPS40195PW Features • Input Operating Voltage Range: 4.5 V to 20 V• Output Voltage as Low as 0.591 V 10.5%• 1800 Bi-Directional Out-of-Phase Synchronization• Internal 5-V Regulator• High and Low MOSFET Sense Overcurrent• 100 kHz to 600 kHz Switching Frequency• Enable and Power Good• Programmable UVLO and Hysteresis• Thermal Shutdown at 1500C• Selectable Soft-Start• Pre-Bias Output Safe TPS40195PW Applications • Digital TV• Entry-Level and Midrange Servers• Networking Equipment• Non-Isolated DC-DC modules


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