> For the complete documentation index, see [llms.txt](https://docs.acrome.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.acrome.net/smd-applications/boardoza-sensors/tps63030-single-inductor-buck-boost-converter.md).

# TPS63030 Single Inductor Buck-Boost Converter

### Overview

The Boardoza TPS63030 is a high-efficiency power management module designed to regulate voltage from variable sources that fluctuate above and below the target output. Powered by the Texas Instruments TPS63030 engine, this Single Inductor Buck-Boost converter provides a seamless transition between step-down (buck) and step-up (boost) modes, ensuring a stable power rail without the dropout issues inherent to LDOs or the noise of dual-stage switchers.

Engineered for portable and battery-critical applications, the module utilizes a synchronous rectification topology to maximize energy conversion efficiency. It is particularly optimized for powering 3.3V logic from single-cell Lithium-Ion batteries (which range from 4.2V down to 2.8V) or dual-cell Alkaline configurations, extracting the full usable capacity of the energy source.

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<div align="left"><figure><img src="/files/3vkoS6DTcGWeDTwfKYv4" alt="" width="375"><figcaption></figcaption></figure></div>

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### Core Technical Specifications

The module is defined by the following operational parameters:

* Topology: High-frequency Synchronous Buck-Boost with a single inductor architecture.
* Input Voltage Range: Accepts a wide input spectrum from 1.8V to 5.5V DC, covering most standard battery chemistries (Li-Ion, Li-Po, 2xAA/AAA).
* Output Current: Capable of delivering up to 900 mA in Buck mode and approximately 500 mA in Boost mode (at 3.3V out, 2.5V in), depending on the thermal environment.
* Efficiency: Achieves peak power conversion efficiency of up to 96%, significantly extending battery runtimes in portable devices.
* Switching Frequency: Operates at a fixed 2.4 MHz, allowing for the use of small passive components and simplifying EMI filtering.
* Quiescent Current: Features a low operating quiescent current of roughly 30 µA in power-save mode, minimizing standby drain.
* Physical Footprint: Designed with a compact PCB layout optimized for thermal dissipation and minimal EMI radiation.

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### Key Engineering Features

#### Seamless Mode Transition

The defining characteristic of the TPS63030 is its ability to maintain tight voltage regulation while the input voltage crosses the output threshold. For example, as a Li-Ion battery discharges from 4.2V to 3.0V, the converter transparently shifts from Buck mode to Boost mode without output glitches or resets, a critical requirement for maintaining MCU stability during brownout conditions.

#### Dynamic Power Save Mode

To accommodate variable load profiles, the module features a Power Save Mode (PSM). At light loads, the converter automatically reduces its switching frequency to maintain high efficiency (Pulse Frequency Modulation). For noise-sensitive applications, this feature can be disabled via the PS/SYNC pin to force fixed-frequency PWM operation, reducing low-frequency ripple.

#### Robust System Protection

The board integrates comprehensive protection circuitry, including Over-Temperature Shutdown and Under-Voltage Lockout (UVLO). Unlike basic boosters, the synchronous design ensures true output disconnection during shutdown, preventing current leakage from input to output when the device is disabled.

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### Board Pinout

<table><thead><tr><th width="162.1953125" align="center">( J1 ) Pin Number</th><th align="center">Pin Name</th><th>Description</th></tr></thead><tbody><tr><td align="center">1</td><td align="center">GND</td><td>Ground</td></tr><tr><td align="center">2</td><td align="center">VIN</td><td>Voltage Input Pin (1.8V ~ 5.5V)</td></tr></tbody></table>

<table><thead><tr><th width="161.76953125" align="center">( J2 ) Pin Number</th><th width="133.78125" align="center">Pin Name</th><th>Description</th></tr></thead><tbody><tr><td align="center">1</td><td align="center">GND</td><td>Ground</td></tr><tr><td align="center">2</td><td align="center">VIN SENSE</td><td>Can be used to measure the input voltage directly on the input capacitor.</td></tr></tbody></table>

<table><thead><tr><th width="171.0703125" align="center">( J3 ) Pin Number</th><th width="122.87109375" align="center">Pin Name</th><th>Description</th></tr></thead><tbody><tr><td align="center">1</td><td align="center">HIGH</td><td>Power Supply</td></tr><tr><td align="center">2</td><td align="center">EN</td><td>Shorting jumper between the center pin EN and HIGH turns on the unit. Shorting jumper between the center pin EN and LOW turns the unit off. (Default: Pulled up to VIN in circuit)</td></tr><tr><td align="center">3</td><td align="center">LOW</td><td>Ground</td></tr></tbody></table>

<table><thead><tr><th width="164.30078125" align="center">( J4 ) Pin Number</th><th width="143.4609375" align="center">Pin Name</th><th>Description</th></tr></thead><tbody><tr><td align="center">1</td><td align="center">GND</td><td>Ground</td></tr><tr><td align="center">2</td><td align="center">VOUT SENSE</td><td>Can be used to measure the output voltage directly on the output capacitor.</td></tr></tbody></table>

<table><thead><tr><th width="165.0703125" align="center">( J5 ) Pin Number</th><th width="125.8984375" align="center">Pin Name</th><th>Description</th></tr></thead><tbody><tr><td align="center">1</td><td align="center">HIGH</td><td>Power Supply</td></tr><tr><td align="center">2</td><td align="center">PS/SYNC</td><td>The center pin of this jumpers is connected to the SYNC pin of the TPS63030 and is used to synchronize the unit with an external clock.This jumper also enables/disables the power-saving mode at light loads. To enable power-save, PS/SYNC must shorting to LOW. (Default: Pulled up to VIN in circuit)</td></tr><tr><td align="center">3</td><td align="center">LOW</td><td>Ground</td></tr></tbody></table>

<table><thead><tr><th width="166.234375" align="center">( J6 ) Pin Number</th><th width="170.7734375" align="center">Pin Name</th><th>Description</th></tr></thead><tbody><tr><td align="center">1</td><td align="center">GND</td><td>Ground</td></tr><tr><td align="center">2</td><td align="center">VOUT</td><td>Buck-boost converter output (3.3V)</td></tr></tbody></table>

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### Applications

* Wearable Electronics: Regulating 3.3V rails for Bluetooth/Wi-Fi SoCs from small Li-Po cells.
* Portable Instrumentation: Ensuring consistent sensor performance as battery voltage degrades.
* RF Transceivers: Providing low-noise power by forcing PWM mode during transmission bursts.
* Energy Harvesting: Efficiently regulating variable voltage from solar or thermal sources

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### Board Dimensions:

![TPS63030 Dimension](https://github.com/Boardoza/Boardoza_TPS63030_Buck-Boost_Converter_Breakout_Board/raw/main/assets/TPS63030%20Dimension.png)

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{% hint style="info" %}
Ready to integrate? You can purchase the **TPS63030 Buck-Boost Converter** directly from our [Online Store](https://www.robotshop.com/products/acrome-tps63030-single-inductor-buck-boost-converter?qd=2034270b758942787c5990ac20109d60). Worldwide shipping is available for engineering samples and production batches.
{% endhint %}