TPS54383

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Convertidor reductor de 300 kHz y entrada de 4.5 V a 28 V, salidas dobles de 3 A, con compensación i

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document-pdfAcrobat TPS5438x Dual 3-A Non-Synchronous Converters With Integrated High-Side MOSFET datasheet (Rev. C) (Inglés) PDF | HTML

TPS54383

ACTIVO

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Detalles del producto

Rating

Catalog

Topology

Buck

Iout (max) (A)

3

Vin (max) (V)

28

Vin (min) (V)

4.5

Vout (max) (V)

25.2

Vout (min) (V)

0.8

Features

Enable, Phase interleaving

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0018

Duty cycle (max) (%)

90

Rating

Catalog

Topology

Buck

Iout (max) (A)

3

Vin (max) (V)

28

Vin (min) (V)

4.5

Vout (max) (V)

25.2

Vout (min) (V)

0.8

Features

Enable, Phase interleaving

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0018

Duty cycle (max) (%)

90

HTSSOP (PWP)

14

32 mm² (5 mm × 6.4 mm)

4.5-V to 28-V Input Range
Output Voltage Range 0.8 V to 90% of Input
Voltage
Output Current Up to 3 A
Two Fixed Switching Frequency Versions:
- TPS54383: 300 kHz
- TPS54386: 600 kHz
Three Selectable Levels of Overcurrent Protection
(Output 2)
0.8-V 1.5% Voltage Reference
2.1-ms Internal Soft-Start
Dual PWM Outputs 180° Out-of-Phase
Ratiometric or Sequential Startup Modes Selectable
by a Single Pin
85-mΩ Internal High-Side MOSFETs
Current Mode Control
Internal Compensation
Pulse-by-Pulse Overcurrent Protection
Thermal Shutdown Protection at +148\xC2°C
14-Pin PowerPAD™ HTSSOP package

4.5-V to 28-V Input Range
Output Voltage Range 0.8 V to 90% of Input
Voltage
Output Current Up to 3 A
Two Fixed Switching Frequency Versions:
- TPS54383: 300 kHz
- TPS54386: 600 kHz
Three Selectable Levels of Overcurrent Protection
(Output 2)
0.8-V 1.5% Voltage Reference
2.1-ms Internal Soft-Start
Dual PWM Outputs 180° Out-of-Phase
Ratiometric or Sequential Startup Modes Selectable
by a Single Pin
85-mΩ Internal High-Side MOSFETs
Current Mode Control
Internal Compensation
Pulse-by-Pulse Overcurrent Protection
Thermal Shutdown Protection at +148\xC2°C
14-Pin PowerPAD™ HTSSOP package

The TPS54383 and TPS54386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With an internally-determined operating frequency, soft-start time, and control loop compensation, these converters provide many features with a minimum of external components. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs.

The outputs may be enabled independently, or may be configured to allow either ratio-metric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources.

The TPS54383 and TPS54386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With an internally-determined operating frequency, soft-start time, and control loop compensation, these converters provide many features with a minimum of external components. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs.

The outputs may be enabled independently, or may be configured to allow either ratio-metric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources.

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Descargar la versión más reciente en inglés	Fecha
*	Hoja de datos	TPS5438x Dual 3-A Non-Synchronous Converters With Integrated High-Side MOSFET datasheet (Rev. C)	PDF \| HTML		15/12/2014

Diseño y desarrollo

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Placa de evaluación

TPS54383EVM — Módulo de evaluación TPS54383 de 2 A, con entrada de 12 V, salida doble de 5 V y 3.3 V

The TPS54383EVM evaluation module (EVM) is a dual non-synchronous buck converter providing fixed 5.0 V and 3.3 V output at up to 2 A each from a 12 V input bus.

The EVM is designed to start up from a single supply, so no additional bias voltage is required for start-up. The module uses the TPS54383 (...)

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