TPS40077

Product Folder Order Now Technical Documents Tools & Software Support & Community TPS40077 SLUS714E – JANUARY 2007 – REVISED JUNE 2019 TPS40077 4.5-V to 28-V Input, Voltage Mode, Synchronous Buck Controller With Voltage Feed Forward 1 Features 1 Operation Over 4.5-V to 28-V Input Range Programmable, Fixed-Frequency, up to 1-MHz, Voltage-Mode Controller Predictive Gate-Drive Anti-Cross-Conduction Circuitry <1% Internal 700-mV Reference Internal Gate-Drive Outputs for High-Side and Synchronous N-Channel MOSFETs 16-Pin PowerPAD™ Package Thermal Shutdown Protection Pre-Bias Compatible Power-Stage Shutdown Capability Programmable High-Side Sense Short-Circuit Protection 2 Applications Power Modules Networking/Telecom PCI Express Industrial Servers 3 Description The TPS40077 is a mid-voltage, wide-input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user-programmable functions, including soft start, undervoltage lockout (UVLO), operating frequency, voltage feed-forward, and high-side, FET-sensed, short-circuit protection. The TPS40077 drives external N-channel MOSFETs using second-generation, predictive-gate drive to minimize conduction in the body diode of the low-side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low-side FET to turn on until the voltage commanded by the closed-loop soft start is greater than the pre-bias voltage. Voltage feed-forward provides...