Calculation tool
Data sheet
TPS54240
- 3.5-V to 42-V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads With a
Pulse Skipping Eco-Mode™ - 138-µA Operating Quiescent Current
- 1.3-µA Shutdown Current
- 100-kHz to 2.5-MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start and Sequencing
- UV and OV Power Good Output
- Adjustable UVLO Voltage and Hysteresis
- 0.8-V Internal Voltage Reference
- 10-Pin HVSSOP and 10-Pin 3-mm x 3-mm
VSON Packages with PowerPAD™ - Supported by WEBENCH® Software Tool
The TPS54240 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple, pulse skip mode reduces the no load, regulated output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.
Undervoltage lockout is internally set at 2.5 V, but it can be increased using the enable pin. The output voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An open-drain power good signal indicates the output is within 94% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and optimization of external component size. Frequency foldback and thermal shutdown protects the part during an overload condition.
The TPS54240 is available in 10-pin, thermally-enhanced HVSSOP and 10-pin 3-mm × 3-mm PowerPAD package.
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Technical documentation
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View all 10 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS54240 3.5-V to 42-V Step-Down DC - DC Converter With Eco-Mode™ datasheet (Rev. B) | PDF | HTML | 24 Nov 2014 |
| Certificate | TPS54240EVM-VSON EU Declaration of Conformity (DoC) | 11 Dec 2023 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| EVM User's guide | TPS54240EVM-VSON Regulator Evaluation Module | 26 Feb 2018 | ||
| Application note | Understanding Eco-mode(TM) Operation | 05 Dec 2016 | ||
| Application note | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 05 Mar 2015 | ||
| Application note | Methods to Improve Low Dropout Operation with the TPS54240 and TPS54260 (Rev. A) | 06 Nov 2013 | ||
| Application note | Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) | 16 Sep 2013 | ||
| Application note | Level Shifting Control for an Inverting Buck-boost | 10 Oct 2012 | ||
| EVM User's guide | TPS54240EVM-605 2.5-A, SWIFT™ Regulator Evaluation Module | 09 Mar 2010 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS54240EVM-605 — 2.5A SWIFT™ Converter Evaluation Module
The TPS54240 dc/dc converter is designed to provide up to a 2.5-A output from an input voltage source of 3.5V to 40V. Rated input voltage and output current range for the evaluation module are given in Table 1 of the User Guide. This evaluation module is designed to demonstrate the small, (...)
User guide: PDF
Evaluation board
TPS54240EVM-VSON — Step-down converter evaluation module
TPS54240EVM-VSON is a step-down converter evaluation module (EVM). The TPS54240 is a buck converter with Eco-mode control which can provide high efficiency at light loads. It has a wide switching-frequency range allows efficiency and external component size to be optimized.
User guide: PDF
Simulation model
TPS54240 TINA-TI Transient Reference Design
SLVM271.TSC (160 KB) - TINA-TI Reference Design
Calculation tool
SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download
The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.
This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)
Supported products & hardware
Products
AC/DC & DC/DC converters (integrated FET)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |
Ordering & quality
Information included:
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- MTBF/FIT estimates
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Information included:
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Support & training
TI E2E™ forums with technical support from TI engineers
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