Herramienta de diseño
PMUX-SWITCHOVER-CALC — Calculate fast switchover parameters for power mux devices
Calculate fast switchover parameters for power mux devices
TPS2121
Multiplexor de potencia de 2.7 V a 22 V, 56 mΩ, 4.5 A, conmutación sin problemas
Hoja de datos
TPS2121
- Wide operating range: 2.8 V to 22 V
- Absolute maximum input voltage of 24 V
- Low RON resistance:
- TPS2120: 62 mΩ (typical)
- TPS2121: 56 mΩ (typical)
- Adjustable overvoltage supervisor (OVx):
- Accuracy < ±5%
- Adjustable priority supervisor (PR1):
- Accuracy < ±5%
- TPS2121 Supports external voltage reference (CP2) with an accuracy of <1%
- Output current limit (ILM):
- TPS2120: 1 A – 3 A
- TPS2121: 1 A – 4.5 A
- Channel status indication (ST)
- Adjustable input settling time (SS)
- Adjustable output soft start time (SS)
- TPS2121 Fast output switchover (tSW): 5 µs (typical)
- Low Iq from enabled input: 200 µA (typical)
- Low Iq from disabled input: 10 µA (Typical)
- Manual input source selection (OVx)
- Over temperature protection (OTP)
The TPS212x devices are Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) that are well suited for a variety of systems having multiple power sources. The devices will Automatically Detect, Select, and Seamlessly Transition between available inputs.
Priority can be automatically given to the highest input voltage or manually assigned to a lower voltage input to support both ORing and Source Selection operations. A priority voltage supervisor is used to select an input source.
An Ideal Diode operation is used to seamlessly transition between input sources. During switchover, the voltage drop is controlled to block reverse current before it happens and provide uninterrupted power to the load with minimal hold-up capacitance.
Current limiting is used during startup and switchover to protect against overcurrent events, and also protects the device during normal operation. The output current limit can be adjusted with a single external resistor.
The TPS212x devices are available in WCSP and small VQFN-HR package options characterized for operation for a temperature range of –40°C to 125°C.
Documentación técnica
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Ver todo 5 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | TPS212x 2.8-V to 22-V Priority Power MUX with Seamless Switchover datasheet (Rev. F) | 28 ago 2020 | |
| Application note | Design Example to Implement Automatic Switchover for Backup Power Using TPS2121 | PDF | HTML | 24 feb 2023 | |
| Application note | Basics of Power MUX (Rev. A) | PDF | HTML | 20 oct 2020 | |
| E-book | 11 Ways to Protect Your Power Path | 03 jul 2019 | ||
| EVM User's guide | TPS212x Evaluation Module User's Guide (Rev. A) | 15 ene 2019 |
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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Placa de evaluación
TPS2121EVM-023 — Módulo de evaluación TPS2121 para aplicaciones de multiplexor de potencia prioritaria
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Guía del usuario: PDF
Modelo de simulación
TPS2121 Unencrypted PSpice Transient Model Package (Rev. A)
SLVMCO8A.ZIP (133 KB) - PSpice Model
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Test report: PDF
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| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| VQFN-HR (RUX) | 12 | 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
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