TPS54540B

AKTIV

Abwärtswandler, 4,5 bis 42 V Eingangsspannung, 5 A, mit Eco-Mode™

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Datenblatt

document-pdfAcrobat TPS54540B 4.5-V to 42-V Input, 5-A step-down dc/dc converter with Eco-mode™ datasheet (Englisch) PDF | HTML

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TPS54540B

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Buck

Iout (max) (A)

5

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

41.1

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Wettable flanks package

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000146

Duty cycle (max) (%)

98

Sector

Robotics

Rating

Catalog

Topology

Buck

Iout (max) (A)

5

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

41.1

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Wettable flanks package

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000146

Duty cycle (max) (%)

98

Sector

Robotics

HSOIC (DDA)

8

29.4 mm² (4.9 mm × 6 mm)

High efficiency at light loads with pulse skipping Eco-mode™
92-mΩ high-side MOSFET
146-µA operating quiescent current and
2-µA shutdown current
100-kHz to 2.5-MHz Fixed switching frequency
Synchronizes to external clock
Low dropout at light loads with integrated BOOT recharge FET
Adjustable UVLO and hysteresis
0.8 V 1% Internal voltage reference
8-Pin HSOIC with PowerPAD™ package
–40°C to 150°C T_J operating range
Create a custom design using the TPS54540B with the WEBENCH® Power Designer

High efficiency at light loads with pulse skipping Eco-mode™
92-mΩ high-side MOSFET
146-µA operating quiescent current and
2-µA shutdown current
100-kHz to 2.5-MHz Fixed switching frequency
Synchronizes to external clock
Low dropout at light loads with integrated BOOT recharge FET
Adjustable UVLO and hysteresis
0.8 V 1% Internal voltage reference
8-Pin HSOIC with PowerPAD™ package
–40°C to 150°C T_J operating range
Create a custom design using the TPS54540B with the WEBENCH® Power Designer

The TPS54540B is a 42-V, 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 no-load-supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the EN (enable) pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin. Output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54540B is available in an 8-pin thermally enhanced HSOIC PowerPAD package.

The TPS54540B is a 42-V, 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 no-load-supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the EN (enable) pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin. Output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54540B is available in an 8-pin thermally enhanced HSOIC PowerPAD package.

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Herunterladen Video mit Transkript ansehen Video

Top-Dokumentation	Typ	Titel	Format-Optionen	Neueste englische Version herunterladen	Datum
*	Datenblatt	TPS54540B 4.5-V to 42-V Input, 5-A step-down dc/dc converter with Eco-mode™ datasheet	PDF \| HTML		24.01.2019
	Anwendungshinweis	NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B			05.04.2019

Design und Entwicklung

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