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.
Placa de evaluación
TPS2121EVM-023 — Módulo de evaluación TPS2121 para aplicaciones de multiplexor de potencia prioritaria
The TPS212x EVM is an evaluation module for TI's TPS212x family of two-input, one-output power multiplexers. This device automatically detects, selects, and seamlessly transitions between two power supplies, each operating from 2.7 V to 22 V. The TPS2121 device, the VSON hot-rod package, can (...)
Guía del usuario: PDF
Modelo de simulación
TPS2121 Unencrypted PSpice Transient Model Package (Rev. A)
SLVMCO8A.ZIP (133 KB) - PSpice Model
Herramienta de simulación
PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Diseños de referencia
TIDA-010046 — Diseño de referencia de PHY Ethernet de 10/100 Mbps compatible con EMC con PoE-PD de IEEE802.3at de
This reference design is optimized for 10 to 100 Mbps using the low-power Ethernet physical layer (PHY) DP83825 supporting 150-m reach over CAT5e cable which is beyond the standard Ethernet distance limitation of 100 m (328 feet). This design has power delivery over Ethernet cable along with data (...)
Diseños de referencia
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This reference design is for 4-cell battery charging applications such as vacuum robot or robotic lawn mower, etc. It employs the buck battery charger BQ25672 with a wide input and output range for 1-4 cell battery charging. External ship FET is introduced to minimize the battery leakage current (...)
Test report: PDF
Diseños de referencia
TIDA-010070 — Diseño de referencia de fuente de alimentación de control y alimentación de entrada de bus de CC pro
This reference design uses an ORing controller, the LM5050-1 to provide protection against reverse polarity and reverse current. In conjunction, the LM5069 hot swap controller is used for overcurrent, over voltage, under voltage protection, and inrush current limitation. The design also features (...)
Diseños de referencia
TIDA-010008 — Diseño de referencia basado en TVS de abrazadera plana para protección contra transitorios para apli
This reference design features multiple approaches for protecting AC or DC analog input, DC analog output, AC or DC binary input, digital output with a high side or low side driver, LCD bias supply, USB interfaces (power and data) and onboard power supplies with 24, 12 or 5V input used in (...)
Diseños de referencia
TIDA-010034 — Diseño de referencia de entrada de adaptador de 12 V PoE de tipo 1 IEEE802.3at para el punto de carg
Power over Ethernet (PoE) enables power to be delivered over the same ethernet cable as data with no danger of cross-talk, interference, or corruption of the data streams. This reference design showcases end-to-end power tree for an IP network camera powered using PoE or 12-V adapter based on the (...)
Diseños de referencia
TIDA-01638 — Diseño de referencia de conmutación sin problemas para la alimentación de reserva
The TIDA-01638 referencedesign showcases Power MUXing with redundant power. If one power source fails, the system needs to switchover to a backup power source and provide an uninterrupted source of power to downstream loads. Therefore, power redundancy ensures that if one power supply were to fail, (...)
| Paquete | Pasadores | Descargar |
|---|---|---|
| VQFN-HR (RUX) | 12 | Ver opciones |
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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Soporte y capacitación
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