TPS54140
1,5-A-Abwärtswandler mit Eco-Mode, 3,5 bis 42 V
Eine neuere Version dieses Produkts ist verfügbar
TPS54140
- 3.5- to 42-V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a
Pulse Skipping Eco-mode™ - 116-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
- MSOP10 Package With PowerPAD
- Supported by WEBENCH® Software Tool
(www.TI.com/WEBENCH)
The TPS54140 device is a 42-V, 1.5-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 116 µA. Using the enable pin, the shutdown supply current is reduced to 1.3 µA.
Undervoltage lockout is internally set at 2.5 V, but 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 the nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the device during an overload condition.
The TPS54140 device is available in a 10-pin thermally enhanced MSOP PowerPAD package.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | TPS54140 1.5-A, 42-V Step-Down DC-DC Converter With Eco-mode™ datasheet (Rev. C) | PDF | HTML | 14 Nov 2014 |
Application note | Understanding Eco-mode(TM) Operation | 05 Dez 2016 | ||
Application note | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 05 Mär 2015 | ||
Application note | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 17 Apr 2013 | ||
Application note | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 26 Okt 2012 | ||
Application note | Level Shifting Control for an Inverting Buck-boost | 10 Okt 2012 | ||
User guide | TPS54140EVM-429 1.5 A, SWIFT Regulator Evaluation Module | 19 Mär 2008 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
TPS54140EVM-429 — TPS54140 42 V-Eingang, 3,3 V-Ausgang, 1,5 A – Evaluierungsmodul
TPS54140 TINA-TI Average Reference Design
TPS54140 TINA-TI Steady State Reference Design
SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator
The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
Unterstützte Produkte und Hardware
Produkte
AC/DC- und DC/DC-Wandler (integrierter FET)
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 (...)
Unterstützte Produkte und Hardware
Produkte
AC/DC- und DC/DC-Wandler (integrierter FET)
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
HVSSOP (DGQ) | 10 | Ultra Librarian |
Bestellen & Qualität
- RoHS
- REACH
- Bausteinkennzeichnung
- Blei-Finish/Ball-Material
- MSL-Rating / Spitzenrückfluss
- MTBF-/FIT-Schätzungen
- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
Support und Schulungen
TI E2E™-Foren mit technischem Support von TI-Ingenieuren
Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.
Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support.