TPS40192
Controlador reductor síncrono de 4.5 V a 18 V, 20 A y 600 kHz con buena potencia
Se encuentra disponible una versión más nueva de este producto
Funcionalidad similar a la del dispositivo comparado
TPS40192
- Input Operating Voltage Range: 4.5 V to 18 V
- Up to 20-A Output Currents
- Supports Pre-Biased Outputs
- 0.5%, 591-mV Reference
- Switching Frequency
- TPS40192: 600 kHz
- TPS40193: 300 kHz
- Three Selectable Thermally Compensated Short-Circuit Protection Levels
- Hiccup Restart from Faults
- Internal 5-V Regulator
- High-Side and Low-Side MOSFET ON-resistance (RDS(on)) Current Sensing
- 10-Pin 3 mm × 3 mm SON Package
- Internal 4-ms Soft-Start Time
- Thermal Shutdown Protection at 145°C
TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltage-mode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs.
Short circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external resistor connected from COMP to GND. This resistor is sensed at startup and the selected threshold is latched. Pulse-by-pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This behavior provides limited power dissipation in the event of a sustained fault.
Documentación técnica
Tipo | Título | Fecha | ||
---|---|---|---|---|
* | Data sheet | TPS4019x 4.5-V to 18-V Input, Voltage-Mode, Synchronous Buck Controller With Power Good datasheet (Rev. H) | PDF | HTML | 23 may 2019 |
Selection guide | Power Management Guide 2018 (Rev. R) | 25 jun 2018 | ||
Selection guide | DC/DC Buck Controller Solutions Selection Guide | 06 feb 2018 | ||
Application note | Not All Jitter Is Created Equal (Rev. A) | 04 jul 2015 | ||
Application note | Enabling Multiple TPS4019x Devices | 29 mar 2012 | ||
Application note | 'C6472 12Vin Flexible Pwr Design Using DCDC Controllers and LDOs (8x C6472) | 26 mar 2010 | ||
Application note | Power Reference Design for the 'C6472, 12V DCDC Controllers, and LDOs | 26 mar 2010 | ||
Application note | TMS320C6472 5V Input Pwr Design, Integrated FET DC/DC Converters and Controllers | 26 mar 2010 | ||
EVM User's guide | Using the TPS40192EVM-525 | 20 nov 2009 | ||
Application note | 5Vin DM643x Power using DC/DC Controllers and LDO | 09 oct 2008 | ||
EVM User's guide | Using the TPS40192EVM-001 | 29 ene 2007 |
Diseño y desarrollo
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TPS40192 TINA-TI Average Reference Design (Rev. A)
TPS40192 TINA-TI Transient Spice Model
Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
---|---|---|
VSON (DRC) | 10 | Ultra Librarian |
Pedidos y calidad
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
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