TPS40195RGYR

具有电源正常指示功能的 4.5V 至 20V 输入、20A 同步降压控制器 16-VQFN -40 to 85

DESCRIPON

The TPS40195 is a flexible synchronous buck controller that operates from a nominal 4.5 V to 20 V supply. This controller implements voltage mode 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.

FEATURES

• Input Operating Voltage Range: 4.5 V to 20 V

• Output Voltage as Low as 0.591 V ±0.5%

• 180° 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 150°C

• Selectable Soft-Start

• Pre-Bias Output Safe]

APPLICATIONS

• Digital TV

• Entry-Level and Midrange Servers

• Networking Equipment

• Non-Isolated DC-DC modules