TPS51222RTVT

Overview

The TPS51222RTVT is a fixed-frequency notebook system power controller manufactured by Texas Instruments. It integrates two synchronous buck converters and two low-dropout linear regulators within a single package. The switching frequency ranges from 200 kHz to 1 MHz, with a maximum duty cycle of 99%. Output voltages are adjustable from 1 V to 12 V for the buck channels, while the LDOs provide fixed outputs. The device supports up to 20 A output current and operates at an input voltage between 4.5 V and 32 V. It functions within a temperature range of -40°C to +85°C and is housed in a 32-WQFN (5x5) surface-mount package.

Feature Summary

• Integrates dual synchronous buck controllers and dual LDO regulators for comprehensive power management
• Features programmable switching frequencies ranging from 200 kHz to 1 MHz
• Supports high output currents up to 20 A with wide input voltage capability

Applications

• Notebook system power control
• Multi-rail power distribution boards
• Embedded computing systems requiring mixed regulation topologies

Procurement Notes

Verify the specific suffix RTVT corresponds to the WQFN-32 package and reel/cut-tape packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements during storage and handling. Ensure the ordering part number matches the exact pinout and thermal pad specifications required for the target PCB layout design.

Selection Notes

Select this component when a compact solution combining both switching and linear regulation is required for notebook or embedded applications. Consider the 32-pin WQFN footprint for space-constrained designs. Evaluate the 200 kHz to 1 MHz frequency range against electromagnetic interference constraints and external inductor size requirements for the specific power budget.

Part Context

This device belongs to the TPS51222 series of integrated power management ICs designed for portable electronics. It consolidates multiple power stages into a single chip to reduce board area and simplify bill of materials. The integration of buck and LDO outputs allows for efficient generation of various voltage rails needed by processors and peripheral components.

FAQ

What is the maximum duty cycle supported by the buck controllers?

The maximum duty cycle is 99%.

Does the TPS51222RTVT include integrated switches?

No, it is a controller that requires external synchronous MOSFETs for operation.