Home Energiemanagement DC/DC-Schaltregler DC/DC-Wandler

TPS54040

AKTIV

Abwärtswandler, 3,5 V bis 42 V Eingangsspannung, 0,5 A, mit Eco-Mode

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Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.
LMR54406 AKTIV Synchroner SIMPLE SWITCHER®-Abwärts-Stromwandler mit 4 V bis 36 V, 0,6 A, 80 µA Ruhestrom Smaller footprint, lower quiescent current, FPWM and PFM options.

Produktdetails

Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light-load efficiency, Power good, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000116 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light-load efficiency, Power good, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000116 Duty cycle (max) (%) 98
HVSSOP (DGQ) 10 14.7 mm² (3 mm × 4.9 mm)
  • 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™
  • 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/Sequencing
  • UV and OV Power Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 Package With PowerPAD™
  • Supported by SwitcherPro Software Tool
    (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
  • 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™
  • 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/Sequencing
  • UV and OV Power Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 Package With PowerPAD™
  • Supported by SwitcherPro Software Tool
    (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)

The TPS54040 device is a 42-V, 0.5-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, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.

Under voltage 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/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.

The TPS54040 device is a 42-V, 0.5-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, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.

Under voltage 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/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TPS54040 0.5-A, 42-V Step Down DC/DC Converter with Eco-Mode™ datasheet (Rev. B) PDF | HTML 15.01.2016
Anwendungshinweis Understanding Eco-mode(TM) Operation 05.12.2016
Anwendungshinweis Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications 05.03.2015
Anwendungshinweis Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A 17.04.2013
Anwendungshinweis Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) 26.10.2012
Anwendungshinweis Level Shifting Control for an Inverting Buck-boost 10.10.2012
Whitepaper Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) 28.03.2012

Design und Entwicklung

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Evaluierungsplatine

TPS54040EVM-456 — TPS54040 42 V-Eingang, 5 V-Ausgang, 0,5 A – Evaluierungsmodul

The TPS54040EVM-456 evaluation module is designed to demonstrate the small printed-circuit-board areas that can be achieved when designing with the TPS54040 regulator. The TPS54040 dc/dc converter is designed to provide up to a 0.5-A output from an input voltage source of 3.5 V to 42 V. Rated (...)
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TPS54040 PSpice Average Model

SLVM913.ZIP (85 KB) - PSpice-Modell
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TPS54040 PSpice Transient Model

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TPS54040 TINA-TI Transient Reference Design

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TPS54040 TINA-TI Transient Spice Model

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TPS54040 Unencrypted PSpice Average Model

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TPS54040 Unencrypted PSpice Transient Model

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