Texas Instruments TPS5300DAP

Overview

TPS5300DAP from Texas Instruments is a hysteretic synchronous-buck controller with integrated dual linear regulator drivers, designed for mobile CPU power delivery. It supports 3 V–28 V input, delivers core voltage via 5-bit VID (0.925 V–2 V in 25/50-mV steps), provides active droop compensation, and integrates 2-A gate drivers in a 32-pin TSSOP PowerPAD package for Intel SpeedStep™ and AMD PowerNow!™ systems.

For engineers reviewing the TPS5300DAP datasheet, TPS5300DAP pinout, TPS5300DAP application, or TPS5300DAP equivalent, key selection considerations include its hysteretic transient response, three-output tracking startup, dynamic VID transition capability, and integrated OCP/UVP/OVP protection with thermal shutdown.

Technical Context

The TPS5300DAP implements a ripple-based hysteretic control architecture with adaptive dead-time circuitry to prevent shoot-through while enabling high-frequency operation up to ~1 MHz. Its core output uses a high-gain current-sense amplifier (25 V/V gain) with Kelvin IS+/IS− inputs for accurate load-current sensing and droop positioning.

Two on-chip linear regulator controllers drive external NPN transistors for I/O (1.5 V) and CLK (2.5 V) rails, each with ±1.7% and ±1.55% initial accuracy respectively. All three outputs share synchronized slow-start and power-good (VGATE) assertion within ±7% of reference.

Key Specifications

Pinout & Package

TPS5300DAP is housed in a thermally enhanced 32-pin TSSOP PowerPAD™ package (8.1 mm × 11 mm) with exposed thermal pad soldered to PCB ground plane for ≤0.72 °C/W junction-to-case resistance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail CPU power controller applications.

Compared with TPS5300DAP, TPS51020DAP offers reduced integration but greater flexibility in auxiliary rail design, while RT8803AZQW provides PWM-based accuracy at the cost of VID compatibility and transient speed - making TPS5300DAP optimal for legacy SpeedStep/PowerNow platforms requiring integrated triple-rail control.

Availability

TPS5300DAP is available at Aetrix Electronics and suitable for Intel SpeedStep™ notebooks, AMD PowerNow!™ ultraportables, DSP processor boards, FPGA-based industrial controllers, and multi-rail point-of-load systems requiring stable component supply and long-term lifecycle support.

Supply support for TPS5300DAP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with broad industrial, automotive, and computing product portfolios.

The TPS5300DAP belongs to TI's mobile CPU power controller family, engineered specifically to meet the dynamic voltage scaling, fast transient, and multi-rail sequencing demands of Intel and AMD mobile processors.

FAQ

What is the core voltage range supported by the TPS5300DAP?

The TPS5300DAP supports a core output voltage range of 0.925 V to 2.0 V, programmable in 25-mV steps from 0.925 V to 1.275 V and 50-mV steps from 1.300 V to 2.000 V via its 5-bit VID interface. This range aligns precisely with Intel SpeedStep™ and AMD PowerNow!™ mobile CPU specifications, and the TPS5300DAP maintains ±1% reference accuracy over temperature and line conditions.

How does the TPS5300DAP implement dynamic VID transitions?

The TPS5300DAP uses the DT_SET pin to control dynamic VID slew rate: a capacitor connected from DT_SET to ANAGND sets the transition time, enabling voltage changes in under 100 µs while limiting dv/dt to prevent input surge currents. This function is fully integrated and requires no external logic - the TPS5300DAP handles VID decoding, ramp generation, and gate driver timing autonomously.

Does the TPS5300DAP support independent regulation of I/O and clock voltages?

Yes, the TPS5300DAP integrates two linear regulator controllers that drive external NPN transistors for dedicated I/O (1.5 V) and CLK (2.5 V) rails. Each has closed-loop feedback via VSENSE_IO and VSENSE_CLK, ±1.7% and ±1.55% initial accuracy respectively, and shares synchronized slow-start and VGATE assertion with the core output - all managed within the single TPS5300DAP IC.

What thermal management features does the TPS5300DAP include?

The TPS5300DAP incorporates thermal shutdown at 155°C with 25°C hysteresis, and its 32-pin TSSOP PowerPAD™ package achieves 0.72 °C/W junction-to-case thermal resistance when the exposed pad is soldered to a PCB ground plane. The datasheet specifies derating curves for both mounted and unmounted configurations, and recommends thermal vias and copper planes per TI technical brief SLMA002.

Can the TPS5300DAP be used without the PowerPAD thermal pad connection?

Yes, the TPS5300DAP remains functional without soldering the PowerPAD thermal pad, but its power dissipation capability drops significantly: from 6.25 W (with pad soldered, TC = 25°C) to 1.2 W (without pad, TA = 25°C). For sustained operation above 1 W, TI mandates PowerPAD connection per SLVS334A - the TPS5300DAP's thermal design is intrinsically dependent on this feature for mobile CPU applications.