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Texas Instruments TPS55340QRTETQ1 — DC-DC Power Modules

TPS55340QRTETQ1 Automotive Boost Converter, 5.25 A Switch

MPNTPS55340QRTETQ1
End of Life

Texas Instruments TPS55340QRTETQ1 automotive AEC-Q100 boost converter, 2.9-38V input, adjustable output, 5.25A integrated switch, 94kHz-2.55MHz switching, 16-WQFN (3x3) package, -40°C to 125°C.

$5.3Ref. price · indicative, final on quote
Texas Instruments TPS55340QRTETQ1 datasheet (PDF)
Packaging16-WFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS55340QRTETQ1 specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input2.9V
Voltage - output38V
Voltage - output (Min (Fixed))2.9V
Output current5.25A (Switch)
Frequency - switching94kHz ~ 2.55MHz
I/O channels1
Operating temperature-40°C ~ 125°C (TA)
GradeAutomotive
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Up
TopologyBoost
QualificationAEC-Q100
Case16-WFQFN Exposed Pad
Output configurationPositive, Isolation Capable
Synchronous rectifierNo

Product details

Automotive boost converter with a 5.25 A switch

The Texas Instruments TPS55340QRTETQ1 is an automotive-grade (AEC-Q100) step-up (boost) switching regulator with an adjustable output and a 5.25 A integrated switch. It accepts a wide input range from 2.9 V to 38 V and delivers a positive, isolation-capable output configurable up to 38 V.

Switching frequency and compensation

The switching frequency range of 94 kHz to 2.55 MHz is set with a single resistor. Lower frequencies reduce switching losses but require larger inductors; higher frequencies shrink the magnetics but increase FET and diode losses. The part uses current-mode control with external compensation — you'll need to select the compensation network (RC) based on the output capacitor and inductor values. The datasheet application circuits cover typical automotive boost and SEPIC topologies.

Frequently asked questions

Does TPS55340QRTETQ1 require external compensation?

Yes, the TPS55340QRTETQ1 uses current-mode control with external compensation. You need to select the compensation network components (resistor and capacitor) based on the output filter and desired loop response.

Is TPS55340QRTETQ1 pin compatible with the non-Q1 version?

The non-automotive version (TPS55340RTET) shares the same pinout and package (16-WQFN 3x3 mm). The Q1 suffix indicates AEC-Q100 automotive qualification and a wider operating temperature range.