TPS40090RHDT

DC DC Switching Controllers Overview

The TPS40090RHDT is a four-channel multiphase buck DC/DC controller manufactured by Texas Instruments. It operates within a switching frequency range of 100 kHz to 1.2 MHz and supports a maximum duty cycle of 87.5%. The device accepts a supply voltage between 4.5 V and 15 V, delivering PWM signals for up to four output stages. It accommodates output voltages from 700 mV to 3.3 V and is designed to support load currents up to 120 A. The component functions within an ambient temperature range of -40°C to +85°C and is housed in a 28-VQFN (5x5) package.

DC DC Switching Controllers Feature Summary

• Supports four-phase synchronous buck topology with independent channel control
• Integrates clock synchronization capability for multi-device phase alignment
• Includes comprehensive protection features such as current limiting and soft start
• Provides power good status indication and enable control functionality

DC DC Switching Controllers Applications

• High-current CPU core voltage regulation
• Graphics processing unit (GPU) power delivery systems
• Multi-phase point-of-load (POL) converter designs
• Telecommunications base station power management

DC DC Switching Controllers Procurement Notes

Verify the specific suffix RHDT corresponds to the 28-VQFN package and tape-and-reel shipping configuration. Confirm that the ordering part number matches the exact pinout and thermal pad requirements for your PCB layout. Ensure compatibility with the intended switching frequency settings and external component selections specified in the official datasheet before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this controller when designing high-density power supplies requiring four-phase interleaving for reduced input and output ripple. Consider its wide operating frequency range for optimizing magnetic component size versus efficiency trade-offs. Evaluate the 4.5 V to 15 V supply range against your system's available rail. Verify that the 28-VQFN package dimensions fit within your mechanical constraints and thermal dissipation strategy.

DC DC Switching Controllers Part Context

This component belongs to the TPS40090 series of multiphase controllers, designed for demanding applications requiring high current density. It complements other Texas Instruments power management solutions by providing precise phase control and synchronization. The RHDT variant specifically denotes the QFN package form factor suitable for surface-mount assembly in compact electronic devices.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Consult the manufacturer's official cross-reference guides or engineering change notices for verified alternatives. Ensure any replacement maintains identical pinout, electrical specifications, and thermal performance characteristics.