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TPS55288-Q1

I²C-programmable four-switch buck-boost converter

Regulates below, at or above input with I²C output/limit control for automotive programmable supplies. The 16A inductor/switch capability is not load current under every voltage ratio, and USB PD still needs protocol control.

AutomotiveActiveExample package: VQFN-HR (RPM) · 26 pinVerified 2026-11-06

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5-second verdict

AutomotiveAEC-Q100 Grade 1

Temperature−40°C to +125°C (TA)

Functional safetyFunctional Safety-Capable

LifecycleActive

In one sentence: Qualification is grounded in this TI product's documentation; no grade is inferred from temperature. An ordering table may show junction or variant-specific limits, which must be distinguished from ambient conditions. TI explicitly lists Functional Safety-Capable. This is a device-documentation category, not system ASIL certification; assess the exact function, assumptions and safety manual.

Key specifications

Power-stage integrationBoost-leg MOSFETs integrated; buck-leg MOSFETs external

Input range2.7–36 V

Output range (feature section)0.8–22 V; register/conditions apply

Output programming step20 mV

Output-current-limit settingUp to 6.35 A; not output-power guarantee

Frequency200 kHz–2.2 MHz

InterfaceI²C

Orderable variants (OPNs)

The GPN is for selection; the full OPN is for ordering. These examples were observed on the verification date, not live stock. Variants may differ in package, temperature, gain/threshold and, for PMICs, NVM/sequencing. Distinguish TA from TJ in the exact datasheet.

OPN	Package	Temperature	Note
TPS55288QRPMRQ1	VQFN-HR (RPM) · 26 pin	-40 to +150°C (TI OPN listing; verify TA/TJ)	Verify exact OPN, temperature definition and revision; not a stock claim.
TPS55288QWRPMRQ1	VQFN-HR (RPM) · 26 pin	-40 to +150°C (TI OPN listing; verify TA/TJ)	Verify exact OPN, temperature definition and revision; not a stock claim.

TPS55288QRPMRQ1-40 to +150°C (TI OPN listing; verify TA/TJ)

VQFN-HR (RPM) · 26 pinVerify exact OPN, temperature definition and revision; not a stock claim.

TPS55288QWRPMRQ1-40 to +150°C (TI OPN listing; verify TA/TJ)

VQFN-HR (RPM) · 26 pinVerify exact OPN, temperature definition and revision; not a stock claim.

Official ordering page: https://www.ti.com/product/TPS55288-Q1

Typical applications

Automotive USB PD power stageProgrammable buck-boost rails

FAQ

Does 16A mean 16A load current?

No. Inductor and load currents differ during boost and depend on efficiency, VIN, peak current and temperature.

Does I²C include USB PD negotiation?

No. I²C programs power settings; USB PD negotiation requires a suitable protocol controller and system policy.

How should I verify the TPS55288-Q1 orderable?

The page lists 2 OPN examples from official material checked on 2026-11-06. Match package, function options and temperature definitions; obtain live price/stock from TI or authorized distributors.

Sources and verification

Related selection and design checks

All selection guides →What does TI Q1 mean →AEC-Q100 grades →Model Y TI BOM →

NuAxi is an independent semiconductor market-intelligence platform and is not affiliated with Texas Instruments. Information is for selection reference only and is not a design, certification or procurement guarantee; verify against TI's official datasheet, ordering page and terms.