TPS40091PW

DC DC Switching Controllers Overview

The TPS40091PW is a four-channel multiphase buck DC/DC controller from Texas Instruments, designed for low-voltage, high-current distributed power applications. It operates within a 5 V to 15 V input range and supports two, three, or four-phase configurations. The device utilizes fixed-frequency peak current mode control with forced phase current balance. Key electrical parameters include a programmable switching frequency up to 1 MHz per phase, an internal 1% reference voltage of 0.7 V, and an output voltage range of 700 mV to 3.3 V. It features tri-state PWM outputs, true differential remote sensing, and a TSSOP-24 package.

DC DC Switching Controllers Feature Summary

• Supports configurable two, three, or four-phase operation for optimized transient response and efficiency.
• Employs fixed-frequency peak current mode control with forced phase current balance.
• Features tri-state PWM outputs compatible with predictive gate drivers.
• Includes true differential remote sensing and programmable load line adjustment.

DC DC Switching Controllers Applications

• Internet server power distribution
• Network equipment power supplies
• Telecommunications distributed systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-24 tube package when sourcing. Confirm that the tri-state output variant (TPS40091) is selected over the binary output version (TPS40090) if driver compatibility requires it. Ensure the application design accounts for the 5 V to 15 V operating range and validates thermal performance within the specified -40 C to +85 C temperature limits.

DC DC Switching Controllers Selection Notes

Select this component for multi-phase buck converter designs requiring high current delivery and fast transient response. It is suitable for applications needing flexible phase configuration to minimize input/output ripple. Consider the tri-state output feature if using predictive gate drivers like the UCC37222. Verify that the required output voltage falls within the 700 mV to 3.3 V range and that the input supply matches the 5 V to 15 V specification.

DC DC Switching Controllers Part Context

The TPS40091 belongs to the TPS4009x family of multiphase controllers, which are optimized for low-voltage, high-current applications. This family includes the TPS40090 and TPS40091, differing primarily in output type. The TPS40091 specifically provides tri-state outputs, distinguishing it from the binary output TPS40090. Both share similar control architectures and are intended for distributed power systems in computing and telecommunications.

DC DC Switching Controllers Replacement Considerations

The TPS40090PW is a direct alternative within the same family but features binary outputs instead of tri-state outputs. Verify if the system design can accommodate binary outputs or if the tri-state capability of the TPS40091 is strictly required for gate driver compatibility.