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TPS40190

ACTIVO

Controlador reductor síncrono de 4.5 V a 15 V y 20 A

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TPS548B28 ACTIVO Convertidor reductor síncrono de 20 A con entrada de 2.7 V a 16 V, con detección remota y límite de Upgraded light-load efficiency, low IQ and extended positive operating temperature.

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 15 Vin (min) (V) 4.5 Vout (max) (V) 12.75 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Pre-Bias Start-Up, Synchronous Rectification Duty cycle (max) (%) 85 Iq (typ) (A) 0.0025 Number of phases 1 Operating temperature range (°C) -40 to 85
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 15 Vin (min) (V) 4.5 Vout (max) (V) 12.75 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Pre-Bias Start-Up, Synchronous Rectification Duty cycle (max) (%) 85 Iq (typ) (A) 0.0025 Number of phases 1 Operating temperature range (°C) -40 to 85
VSON (DRC) 10 9 mm² (3 mm × 3 mm)
  • Input Operating Voltage Range: 4.5 V to 15 V
  • Reference 0.591 V ±1%
  • Voltage Mode Control
  • Internal 5-V Regulator For Internal Housekeeping, Driver Power and Light External Loads
  • Selectable Short-Circuit Protection Thresholds
  • Pre-Bias Ouput Safe
  • Fixed Switching Frequency of 300 kHz
  • Internal Soft Start
  • Small 3 mm × 3 mm, 10-Pin SON Package
  • Bootstrapped Drivers for N-Channel MOSFET
  • Adaptive Anti-Cross Conduction
  • Internal Bootstrap Diode
  • 1.2-A Drivers for Decreased Switching Loss
  • Input Operating Voltage Range: 4.5 V to 15 V
  • Reference 0.591 V ±1%
  • Voltage Mode Control
  • Internal 5-V Regulator For Internal Housekeeping, Driver Power and Light External Loads
  • Selectable Short-Circuit Protection Thresholds
  • Pre-Bias Ouput Safe
  • Fixed Switching Frequency of 300 kHz
  • Internal Soft Start
  • Small 3 mm × 3 mm, 10-Pin SON Package
  • Bootstrapped Drivers for N-Channel MOSFET
  • Adaptive Anti-Cross Conduction
  • Internal Bootstrap Diode
  • 1.2-A Drivers for Decreased Switching Loss

The TPS40190 is a cost-optimized synchronous buck controller that operates from 4.5 V to 15 V nominally, and implements a fixed frequency voltage mode power supply. The controller uses an adaptive anti-cross conduction scheme to prevent both the high-side and the rectifier MOSFET to be turned on at the same time, preventing shoot through current in the two MOSFETs.

The controller also provides a short circuit protection threshold that is user selectable between one of three values. The protection level is set with a single external resistor connected from COMP to GND. During start-up, the impedance connected to COMP is sensed, and the information is decoded to select one of the three thresholds. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This provides limited power dissipation in the event of a sustained fault.

The TPS40190 provides strong drivers to minimize switching losses in the power stage, reducing heat build up in the MOSFETs and allowing larger MOSFETs to be used without undue switching time penalty.

The TPS40190 is a cost-optimized synchronous buck controller that operates from 4.5 V to 15 V nominally, and implements a fixed frequency voltage mode power supply. The controller uses an adaptive anti-cross conduction scheme to prevent both the high-side and the rectifier MOSFET to be turned on at the same time, preventing shoot through current in the two MOSFETs.

The controller also provides a short circuit protection threshold that is user selectable between one of three values. The protection level is set with a single external resistor connected from COMP to GND. During start-up, the impedance connected to COMP is sensed, and the information is decoded to select one of the three thresholds. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This provides limited power dissipation in the event of a sustained fault.

The TPS40190 provides strong drivers to minimize switching losses in the power stage, reducing heat build up in the MOSFETs and allowing larger MOSFETs to be used without undue switching time penalty.

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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 TPS40190 4.5-V to 15-V Input, Voltage-Mode, Synchronous Buck Controller datasheet (Rev. D) PDF | HTML 6/06/2019
Guía del usuario TPS40190 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 10/01/2022
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Nota sobre la aplicación Enabling Multiple TPS4019x Devices 29/03/2012
Más documentación TPS40190DRC Test Report 15/02/2008

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Modelo de simulación

TPS40190 TINA-TI Average Reference Design (Rev. C)

SLVC180B (112 KB) - Diseño de referencia TINA-TI
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Modelo de simulación

TPS40190 TINA-TI Average Spice Model (Rev. A)

SLVM015 (3 KB) - Modelo TINA-TI Spice
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Modelo de simulación

TPS40190 TINA-TI Transient Reference Design (Rev. B)

SLVM014 (150 KB) - Diseño de referencia TINA-TI
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Modelo de simulación

TPS40190 TINA-TI Transient Spice Model (Rev. B)

SLVM016 (18 KB) - Modelo TINA-TI Spice
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Modelo de simulación

TPS40190 Unencrypted PSpice Average Model Package (Rev. A)

SLUM371A.ZIP (17 KB) - Modelo PSpice
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Modelo de simulación

TPS40190 Unencrypted PSpice Transient Model Package (Rev. D)

SLVC179D.ZIP (40 KB) - Modelo PSpice
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Herramienta de cálculo

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Pedidos y calidad

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