• Product Introduction

TPS40195

The 4.5V to 20V synchronous and power synchronous step-down controllers have a good advantage

illustrate   The TPS40195 is a flexible synchronous step-down controller that operates from a nominal 4.5 V to a 20 V supply. The controller implements adjustable voltage mode control with switching frequency from 100 kHz to 600 kHz. Flexible features are found on this device, including selectable soft-start times, programmable short-circuit limits, programmable undervoltage lockout (UVLO), and synchronization capabilities. An adaptive anti-cross conduction scheme is used to prevent shooting through current in the power FET. Overcurrent detection is a user-programmable threshold by detecting the voltage of the opposite low-side MOSFET when it is dropping. The threshold is set by a single external connection to the ground resistor from ILIM.   characteristic   Input operating voltage range: 4.5 V to 20 V The output voltage is 0.591 volts ± 0.5%, which is low Phase synchronization of 180° bidirectional Out Internal 5-V regulator Overcurrent detection for high and low MOSFETs Switching frequencies from 100 kHz to 600 kHz Good enablement and power Programmable UVLO and hysteresis Thermal shutdown at 150°C Optional soft start Pre-biased output safety apply digital television Entry-level and mid-range servers Network equipment Non-isolated DC - DC modules