Mikroelektronika d.o.o.
Carte Power MUX 2 Click
Carte Power MUX 2 Click
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Overview
Le Power MUX 2 Click Board™ est une carte complémentaire compacte dotée d'un multiplexeur de puissance hautement configurable. Cette carte est équipée du TPS2120, un multiplexeur de puissance à double entrée et sortie unique avec une fonction de commutation automatique de Texas Instruments. Cette carte Click Board™ donne la priorité à l'alimentation principale lorsqu'elle est présente et bascule rapidement vers l'alimentation auxiliaire lorsque l'alimentation principale chute. Pendant la commutation, la chute de tension est contrôlée pour bloquer le courant inverse avant qu'il ne se produise et fournir une alimentation ininterrompue à la charge avec une capacité de maintien minimale. Cette carte Click Board™ convient aux applications d'alimentation de secours et de veille, à la sélection de la source d'entrée et à divers systèmes dotés de plusieurs sources d'alimentation.
La carte Power MUX 2 Click Board™ est pris en charge par une bibliothèque compatible mikroSDK, qui comprend des fonctions qui simplifient le développement logiciel. Cette Click Board™ est un produit entièrement testé, prêt à être utilisé sur un système équipé du socket mikroBUS™.
| General Information | |
|---|---|
Part Number (SKU) |
MIKROE-4575
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Manufacturer |
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| Physical and Mechanical | |
Weight |
0.019 kg
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| Other | |
Country of Origin |
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HS Code Customs Tariff code
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EAN |
8606027382246
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Warranty |
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How Does The Power MUX 2 Click Board™ Work?
The Power MUX 2 Click Board™ as its foundation uses the TPS2120, a highly configurable power mux with an automatic switchover feature from Texas Instruments. This dual-input single-output power multiplexer prioritizes the main supply of 12V when present and quickly switches to an auxiliary supply of 5 V when the main supply drops. A priority voltage supervisor is used to select an input source. 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.
If one of the input power supplies were to fail, the system needs to automatically switchover to a backup power source without interrupting regular operation. When the 12V supply on IN1 drops below 7.6V, the device will automatically switch to the 5V auxiliary supply on IN2. When the 12V supply returns, it will become the output supply again. Furthermore, the voltage drop on the output should be minimal, providing the output with uninterrupted redundant power.
The Power MUX 2 Click Board™ communicates with MCU through the 3-Wire SPI serial interface using the TPL0501, an onboard 256-taps digital potentiometer from Texas Instruments. This way, the TPL0501 serves a current limiter that adjusts the output current of the TPS2120 instead of an external resistor. Current limiting can be used during Startup and switchover to protect against overcurrent events and protect the device during regular operation.
As an additional feature, this Click board™ also has two red LED indicators labelled as IN1 and IN2, which visually indicate to the user the fact which one of the two power supplies, IN1 or IN2, is located on the output more precisely on the output connector of the Click board, labelled as OUT. The Power MUX 2 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to properly use the SPI communication lines. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | Power Switch |
| Applications | Can be used for applications as a backup and standby power, input source selection, and various systems having multiple power sources. |
| On-board modules | TPS2120 - highly configurable power mux with an automatic switchover feature from Texas Instruments TPL0501 - 256-taps digital potentiometer from Texas Instruments |
| Key Features | Low power consumption, automatic switchover, output current limit, uninterrupted power solution, and more. |
| Interface | SPI |
| Compatibility | mikroBUS |
| Click board size | M (42.9 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the Power MUX 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | NC | ||
| NC | 2 | RST | INT | 15 | NC | ||
| SPI Chip Select | CS | 3 | CS | RX | 14 | NC | |
| SPI Clock | SCK | 4 | SCK | TX | 13 | NC | |
| NC | 5 | MISO | SCL | 12 | NC | ||
| SPI Data IN | SDI | 6 | MOSI | SDA | 11 | NC | |
| Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | 5V | Power Supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| LD3 | IN1 | - | Primary Power Switch LED Indicator |
| LD2 | IN2 | - | Secondary Power Switch LED Indicator |
| JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
POWER MUX 2 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage VCC | 3.3 | - | 5 | V |
| Supply Voltage IN1 | 7.6 | - | 12 | V |
| Supply Voltage IN2 | - | 5 | - | V |
| Output Voltage OUT | 5 | - | 12 | V |
| Output Current Limit | 1 | - | 4 | A |
| Current Limit Resistance | 18 | - | 100 | kΩ |
| Operating Temperature Range | -40 | +25 | +85 | °C |
Frequently Asked Questions
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