TPS40195
Controlador reductor síncrono de 4.5 V a 20 V, 20 A con buena potencia y sincronización
TPS40195
- Input Operating Voltage Range: 4.5 V to 20 V
- Output Voltage as Low as 0.591 V ±0.5%
- 180° Bi-Directional Out-of-Phase Synchronization
- Internal 5-V Regulator
- High and Low MOSFET Sense Overcurrent
- 100-kHz to 600-kHz Switching Frequency
- Enable and Power Good
- Programmable UVLO and Hysteresis
- Thermal Shutdown at 150°C
- Selectable Soft Start
- Prebias Output Safe
The TPS40195 is a flexible synchronous buck controller that operates from a nominal 4.5-V to 20-V supply. This controller implements voltage mode control with the switching frequency adjustable from 100 kHz to 600 kHz. Flexible features found on this device include selectable soft-start time, programmable short-circuit limit, programmable undervoltage lockout (UVLO) and synchronization capability. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Overcurrent detection is done by sensing the voltage drop across the low-side MOSFET when it is on, and comparing it with a user-programmable threshold.
The threshold is set with a single external resistor connected from ILIM to GND. 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 provides limited power dissipation in the event of a sustained fault. Synchronization on this device is bi-directional. Devices can be synchronized 180° out of phase to a chosen master TPS40195 running at a fixed 250 kHz or 500 kHz, or can be synchronized to an outside clock source anywhere in the 100 kHz to 600 kHz range.
Documentación técnica
Tipo | Título | Fecha | ||
---|---|---|---|---|
* | Data sheet | TPS40195 4.5-V to 20-V Synchronous Buck Controller With Synchronization and Power Good datasheet (Rev. F) | PDF | HTML | 07 jun 2019 |
User guide | TPS40195 Buck Controller Evaluation Module User's Guide (Rev. B) | PDF | HTML | 10 ene 2022 | |
Selection guide | Power Management Guide 2018 (Rev. R) | 25 jun 2018 | ||
Application note | Enabling Multiple TPS4019x Devices | 29 mar 2012 | ||
More literature | TPS40195RGY Test Report | 15 feb 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.
TPS40195EVM-001 — Módulo de evaluación de 20 A, salida de 3.3 V, entrada de 20 V TPS40195
TPS40195 TINA-TI Average Reference Design
TPS40195 TINA-TI Transient Reference Design (Rev. B)
TPS40195 TINA-TI Transient Spice Model
TPS40195 Unencrypted PSpice Average and Transient Model Package (Rev. B)
Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
---|---|---|
TSSOP (PW) | 16 | Ultra Librarian |
VQFN (RGY) | 16 | 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
Foros de TI E2E™ con asistencia técnica de los ingenieros de TI
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.