The TPS543x is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 15µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS543x feedback loop is internally compensated. The TPS5431 is intended to operate from power rails up to 23V. The TPS5430 regulates a wide variety of power sources including 24V bus.
The TPS543x device is available in a thermally enhanced, easy to use 8-pin SOIC PowerPAD integrated circuit package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS543x 3A, Wide Input Range, Step-Down Converter datasheet (Rev. L) | PDF | HTML | Apr 21, 2026 |
| Technical article | How to design a high-voltage DCM inverting charge pump converter | PDF | HTML | Aug 13, 2025 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | Jun 25, 2018 | ||
| Technical article | Laying out an inverting buck-boost converter for success | PDF | HTML | Sep 28, 2016 | |
| Application note | Simplifying Stability Checks (Rev. B) | Nov 5, 2013 | ||
| User guide | Voltage-Controlled Amplifier Evaluation Kit | Aug 25, 2008 | ||
| More literature | TPS5430DDA Test Report | Feb 19, 2008 | ||
| Analog design Journal | Using a buck converter in an inverting buck-boost topology | Oct 12, 2007 | ||
| Application note | Using the TPS5430 As An Inverting Buck Boost Converter (Rev. A) | Aug 15, 2007 | ||
| Application note | Using TPS5410/20/30/31/50 w/Aluminum/Ceramic Output Capacitors (Rev. C) | Mar 21, 2007 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
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