TPS54331-Q1

Name: TPS54331-Q1
Brand: TI
SKU: TPS54331-Q1
Price: 1.309 USD

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3,5 V bis 28 V, 570kHz-Festfrequenz, 3A, Abwärtswandler mit Eco-Mode™ für die Automobilindustrie

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Datenblatt

document-pdfAcrobat TPS54331-Q1 3-A 28-V Input, Step Down, SWIFT™ DC/DC Converter With Eco-mode™ datasheet (Englisch)

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3 V auf 17 V, hocheffizienter Abwärtswandler mit niedrigem Ruhestrom im QFN-Gehäuse mit 1,5 Next generation device

TPS54331-Q1

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Datenblatt

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Produktdetails

Rating

Automotive

Operating temperature range (°C)

-40 to 150

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

3.5

Vin (max) (V)

28

Switching frequency (min) (kHz)

570

Switching frequency (max) (kHz)

570

Features

Enable, Light Load Efficiency, UVLO adjustable

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

25

Iq (typ) (µA)

110

Duty cycle (max) (%)

90

Rating

Automotive

Operating temperature range (°C)

-40 to 150

Topology

Buck

Type

Converter

Iout (max) (A)

3

Vin (min) (V)

3.5

Vin (max) (V)

28

Switching frequency (min) (kHz)

570

Switching frequency (max) (kHz)

570

Features

Enable, Light Load Efficiency, UVLO adjustable

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

25

Iq (typ) (µA)

110

Duty cycle (max) (%)

90

SOIC (D)

8

29.4 mm² 4.9 x 6

Qualified for Automotive Applications
3.5V to 28V Input Voltage Range
Adjustable Output Voltage Down to 0.8V
Integrated 80 mΩ High Side MOSFET Supports up to 3A Continuous Output Current
High Efficiency at Light Loads with Pulse Skipping Eco-mode™ Control
Fixed 570kHz Switching Frequency
Typical 1µA Shutdown Quiescent Current
Adjustable Slow Start Limits Inrush Currents
Programmable UVLO Threshold
Overvoltage Transient Protection
Cycle-by-Cycle Current Limit, Frequency Fold Back and Thermal Shutdown Protection
Available in Easy-to-Use SOIC8 Package
Supported by SwitcherPro™ Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
strong>For SWIFT™ Documentation, See the TI Website at www.ti.com/swift
APPLICATIONS
- Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays,
  Peripherals, and Battery Chargers
- Industrial and Car Audio Power Supplies
- 5-V, 12-V and 24-V Distributed Power Systems

SWIFT, Eco-mode, SwitcherPro, PowerPAD are trademarks of Texas Instruments.

Qualified for Automotive Applications
3.5V to 28V Input Voltage Range
Adjustable Output Voltage Down to 0.8V
Integrated 80 mΩ High Side MOSFET Supports up to 3A Continuous Output Current
High Efficiency at Light Loads with Pulse Skipping Eco-mode™ Control
Fixed 570kHz Switching Frequency
Typical 1µA Shutdown Quiescent Current
Adjustable Slow Start Limits Inrush Currents
Programmable UVLO Threshold
Overvoltage Transient Protection
Cycle-by-Cycle Current Limit, Frequency Fold Back and Thermal Shutdown Protection
Available in Easy-to-Use SOIC8 Package
Supported by SwitcherPro™ Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
strong>For SWIFT™ Documentation, See the TI Website at www.ti.com/swift
APPLICATIONS
- Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays,
  Peripherals, and Battery Chargers
- Industrial and Car Audio Power Supplies
- 5-V, 12-V and 24-V Distributed Power Systems

SWIFT, Eco-mode, SwitcherPro, PowerPAD are trademarks of Texas Instruments.

The TPS54331 is a 28-V, 3-A non-synchronous buck converter that integrates a low R_DS(on) high side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1 µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle by cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

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Alle anzeigen 2

	Typ	Titel		Datum
*	Data sheet	TPS54331-Q1 3-A 28-V Input, Step Down, SWIFT™ DC/DC Converter With Eco-mode™ datasheet		08 Nov 2010
	User guide	TPS54331 Step-Down Converter Evaluation Module User's Guide (Rev. A)	PDF \| HTML	08 Okt 2021

Design und Entwicklung

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Evaluierungsplatine

TPS54331EVM-232 — TPS54331 28-V-Eingang, 3,3-V-Ausgang, 3 A, Evaluierungsmodul

The TPS54331EVM-232 is a fully assembled and tested circuit for evaluating the TPS54331 synchronous step-down SWIFT™ converter. The EVM converts a 3.5-V to 28-V input voltage to a regulated 3.3-V output voltage that delivers up to 3-A output. The switching frequency is internally set at a (...)

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