The TPS6213x family are synchronous step-down converters that take 3 to 17 V in and deliver up to 3 A at 0.9 to 6 V, switching at a typical 2.5 MHz so the inductor can be small. That range covers a Li-ion pack and a 12 V rail. It is the synchronous, higher-frequency alternative to the TPS54331. Figures are from the Texas Instruments TPS6213x datasheet SLVSAG7F.
Key specifications
| Input | 3–17 V |
|---|---|
| Output current | 3 A |
| Output | 0.9–6 V adjustable |
| Switching | 2.5 MHz typical |
| IQ | 17 µA typical |
| Shutdown | under 2 µA |
| Package | VQFN-16, 3 × 3 mm |
What the datasheet promises
| Item | Datasheet value |
|---|---|
| Input voltage | 3 to 17 V |
| Output current | Up to 3 A |
| Output voltage | Adjustable from 0.9 V to 6 V; pin-selectable nominal or +5 percent |
| Topology | Synchronous, DCS-Control |
| Switching frequency | 2.5 MHz typical, selectable operating frequency |
| Quiescent current | 17 µA typical in power-save mode |
| Shutdown current | Under 2 µA |
| Features | Programmable soft start and tracking, power-good output, 100 percent duty cycle mode |
| Protection | Short-circuit and overtemperature protection |
| Package | VQFN-16 (RGT), 3 mm × 3 mm |
The QFN package has no leads on the sides, so it is not a part to hand-solder; most robots use it on a ready-made module or a reflowed board. The datasheet gives the inductor and capacitor choices for each output voltage.
Using it on a robot
- Make 5 V or 3.3 V from a 12 V supply or a multi-cell Li-ion pack within the 17 V limit, with less heat than a linear regulator such as the LM7805.
- Use the power-good output to hold a microcontroller in reset until the rail is up.
- Check output ripple on a scope before powering sensitive analog parts.
Sources and further reading
- Texas Instruments TPS6213x datasheet (SLVSAG7F) — input and output range, current, frequency, quiescent current and package above.
Last reviewed: November 2026. Limits are from the Texas Instruments datasheet; breakout boards and modules vary. No price is quoted because it has not been checked.
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