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TPS40041

ACTIVO

Controlador reductor síncrono de entrada de 2.25 a 5.5 V, 600 kHz, con recuento de pines bajo

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TPS40041

ACTIVO
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Detalles del producto

Rating Catalog Iout (max) (A) 6 Vin (max) (V) 5.5 Vin (min) (V) 2.25 Vout (max) (V) 4.95 Vout (min) (V) 0.6 Control mode Voltage mode Features Prebias startup Duty cycle (max) (%) 95 Iq (typ) (A) 0.002 Number of phases 1 Operating temperature range (°C) -40 to 85
Rating Catalog Iout (max) (A) 6 Vin (max) (V) 5.5 Vin (min) (V) 2.25 Vout (max) (V) 4.95 Vout (min) (V) 0.6 Control mode Voltage mode Features Prebias startup Duty cycle (max) (%) 95 Iq (typ) (A) 0.002 Number of phases 1 Operating temperature range (°C) -40 to 85
VSON (DRB) 8 9 mm² (3 mm × 3 mm)
  • 2.25-V to 5.5-V Input
  • Output Voltage from 0.6 V to 90% of VIN
  • High-Side Drive for N-Channel FET
  • Supports Pre-Biased Outputs
  • Adaptive Anti-Cross Conduction Gate Drive
  • 1%, 0.6-V Reference
  • Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
  • Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
  • Hiccup Restart from Faults
  • Voltage Mode Control
  • Active Low Enable
  • Thermal Shutdown Protection at 145°C
  • 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
  • APPLICATIONS
    • Point of Load
    • Telecommunications
    • DC to DC Modules
    • Set Top Boxes

PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.
  • 2.25-V to 5.5-V Input
  • Output Voltage from 0.6 V to 90% of VIN
  • High-Side Drive for N-Channel FET
  • Supports Pre-Biased Outputs
  • Adaptive Anti-Cross Conduction Gate Drive
  • 1%, 0.6-V Reference
  • Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
  • Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
  • Hiccup Restart from Faults
  • Voltage Mode Control
  • Active Low Enable
  • Thermal Shutdown Protection at 145°C
  • 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
  • APPLICATIONS
    • Point of Load
    • Telecommunications
    • DC to DC Modules
    • Set Top Boxes

PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.

The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.

One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.6-ms calibration time, the output voltage is allowed to rise for a 4-ms soft start. During operation, the selected SCP threshold voltage is compared to the upper MOSFET’s voltage drop during its ON time to determine whether there is an overload condition.

The packaging of the TPS40040/1 is unique in that the PowerPAD™ is used as an electrical ground connection as well as a thermal connection.

The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.

One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.6-ms calibration time, the output voltage is allowed to rise for a 4-ms soft start. During operation, the selected SCP threshold voltage is compared to the upper MOSFET’s voltage drop during its ON time to determine whether there is an overload condition.

The packaging of the TPS40040/1 is unique in that the PowerPAD™ is used as an electrical ground connection as well as a thermal connection.
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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 Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller datasheet (Rev. D) 12/12/2007
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Guía de selección DC/DC Buck Controller Solutions Selection Guide 6/02/2018
Artículo técnico Power Tips: Simple PSRR measurement with a frequency analyzer PDF | HTML 25/05/2016
Nota sobre la aplicación Power for V5’s Transceiver using DC/DC Controllers using External FETs 4/09/2007
EVM User's guide A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter 10/04/2006

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.

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SLVJ009 (334 KB) - Diseño de referencia TINA-TI
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Herramienta de cálculo

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