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TPS40190

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4,5 V bis 15 V, 20 A, Synchron-Abwärtsregler

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TPS548B28 AKTIV Synchroner Abwärtswandler, 2,7 bis 16 V Eingangsspannung, 20 A, mit Fernerfassung und Hiccup-Strombe Upgraded light-load efficiency, low IQ and extended positive operating temperature.

TPS40190

AKTIV
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Produktdetails

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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TPS40190 4.5-V to 15-V Input, Voltage-Mode, Synchronous Buck Controller datasheet (Rev. D) PDF | HTML 06.06.2019
Benutzerhandbuch TPS40190 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 10.01.2022
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018
Anwendungshinweis Enabling Multiple TPS4019x Devices 29.03.2012
Weitere Dokumente TPS40190DRC Test Report 15.02.2008

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Simulationsmodell

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

SLVC180B (112 KB) - TINA-TI-Referenzdesign
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Simulationsmodell

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

SLVM015 (3 KB) - TINA-TI Spice-Modell
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Simulationsmodell

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

SLVM014 (150 KB) - TINA-TI-Referenzdesign
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Simulationsmodell

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

SLVM016 (18 KB) - TINA-TI Spice-Modell
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Simulationsmodell

TPS40190 Unencrypted PSpice Average Model Package (Rev. A)

SLUM371A.ZIP (17 KB) - PSpice-Modell
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Simulationsmodell

TPS40190 Unencrypted PSpice Transient Model Package (Rev. D)

SLVC179D.ZIP (40 KB) - PSpice-Modell
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