Herramienta de cálculo
TPS40040
Controlador reductor síncrono de entrada de 2.25 a 5.5 V, 300 kHz, con recuento de pines bajo
Hoja de datos
TPS40040
- 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.
Documentación técnica
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Ver todo 7 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller datasheet (Rev. D) | 12 dic 2007 | |
| Analog Design Journal | Control-Mode Quick Reference Guide (Rev. B) | PDF | HTML | 29 ago 2023 | |
| 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 | Analysis and Design of Input Filter for DC-DC Circuit | 27 nov 2017 | ||
| EVM User's guide | Using the TPS40040-EVM-001 | 29 ene 2007 | ||
| User guide | A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter | 10 abr 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.
Placa de evaluación
TPS40040EVM-001 — Módulo de evaluación de reductor síncrono de 10 A, de entrada de 5 V, salida de 1.8 V
The TPS40040EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 10 A from a 5 V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for startup. The module uses the TPS40040 (...)
Guía del usuario: PDF
Placa de evaluación
TPS40041EVM-001 — Módulo de evaluación de 6 A, salida de 1.8 V, entrada de 5 V TPS40041
The TPS40041EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 6 A from a 5 V input bus or 3 A from a 3.3 V input. The EVM is designed to start up from a single supply, so no additional bias voltage is required for (...)
Guía del usuario: PDF
Modelo de simulación
TPS40040 TINA-TI Average Reference Design (Rev. A)
SLVJ009A.TSC (566 KB) - TINA-TI Reference Design
Modelo de simulación
TPS40040 TINA-TI Transient Reference Design
SLVM028.TSC (753 KB) - TINA-TI Reference Design
Modelo de simulación
TPS40040 TINA-TI Transient Spice Model
SLVM029.TSM (21 KB) - TINA-TI Spice Model
Modelo de simulación
TPS40040 Unencrypted PSpice Transient Model Package (Rev. A)
SLVM032A.ZIP (67 KB) - PSpice Model
Modelo de simulación
TPS40040/1 Unencrypted PSpice Average Model Package (Rev. A)
SLVJ008A.ZIP (108 KB) - PSpice Model
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
Pedidos y calidad
Información incluida:
- 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
Información incluida:
- 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.
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