Mikroelektronika d.o.o.
Tableau de 3 clics actuel
Tableau de 3 clics actuel
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Overview
La carte Click Board™ Current 3 est une carte complémentaire compacte destinée aux applications telles que la détection de courant et la surveillance de la température. Cette carte est équipée de l'EMC1702, une combinaison du dispositif de détection de courant côté haut avec une fonction de mesure de température de Microchip. L'EMC1702 mesure la tension développée à travers une résistance de détection pour représenter le courant côté haut d'une batterie ou d'un régulateur de tension, contient un circuit de détection de crête bidirectionnel pour signaler les pics de courant avec une durée et un seuil d'amplitude programmables, et un canal pour la mesure de la température externe. Cette carte Click Board™ convient aux applications embarquées, industrielles et de systèmes de gestion de l'alimentation.
La carte Click Board Current 3™ est prise en charge par une bibliothèque compatible mikroSDK, qui comprend des fonctions qui simplifient le développement logiciel. Cette carte Click Board™ est un produit entièrement testé, prêt à être utilisé sur un système équipé du socket mikroBUS™.
| General Information | |
|---|---|
Part Number (SKU) |
MIKROE-4203
|
Manufacturer |
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| Physical and Mechanical | |
Weight |
0.02 kg
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| Other | |
Country of Origin |
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HS Code Customs Tariff code
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EAN |
8606027380884
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Warranty |
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How Does The Current 3 Click Board™ Work?
The Current 3 Click Board™ is based on the EMC1702, a combination of the high-side current sensing device with a precision voltage and temperature measurement capabilities from Microchip. It measures the voltage developed across an external sense resistor to represent the high-side current of a battery or voltage regulator, and also measures the source voltage and uses these measured values to present a proportional power calculation. The EMC1702 contains additional bi-directional peak detection circuitry to flag instantaneous current spikes with programmable time duration and magnitude threshold. Also, it possesses an external diode channel for temperature measurement as well as an internal diode for ambient temperature measurements.
The EMC1702 current-sense measurement converts differential input voltage measured across an external sense resistor to a proportional output voltage. This voltage is digitized using a variable resolution (13-bit to 15-bit) Sigma-Delta ADC and I2C protocol. The current range allows for large variations in measured current with high accuracy and a low voltage drop across the resistor.
The Current 3 Click Board™ communicates with MCU using the standard I2C 2-Wire interface with a maximum frequency of 400kHz. The EMC1702 slave address is determined by a resistor connected R6 (0Ω) between the ground and the ADDR_SEL pin. Various values of this resistor also provide different slave addresses (0Ω is equal to 1001_100(r/w)).
The EMC1702 has two levels of monitoring and contains user-programmable bipolar Full-Scale Sense Ranges (FSSR). Each VSENSE measurement is averaged over a user-programmable time. If VSENSE exceeds (or drops below) the respective limits, the ALERT pin, routed on the INT pin of the mikroBUS™ socket labelled as ALT, may be asserted. It also contains user-programmable current peak detection circuitry on DUR_SEL and TH_SEL pins that will assert the THERM pin, routed on the RST pin of the mikroBUS™ socket labelled as TRM, if a current spike is detected larger than the programmed threshold and of longer duration than the programmed time (threshold and duration selected by resistors R7 and R8).
The Current 3 Click Board™ is designed to be operated with both 3.3V and 5V logic voltage levels that can be selected via VCC SEL jumper. This allows for both 3.3V and 5V capable MCUs to use the I2C communication lines properly.
SPECIFICATIONS
| Type | Measurements |
| Applications | Can be used for embedded, industrial, and power management systems applications. |
| On-board modules | The Current 3 Click Board™ is based on the EMC1702, a combination of the high-side current sensing device with a precision voltage and temperature measurement capabilities from Microchip. |
| Key Features | High-side current sensor, temperature monitoring, hardware set peak detector, accuracy, and more. |
| Interface | I2C |
| 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 Current 3 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 | ||
| Current Peak Duration Detection | TRM | 2 | RST | INT | 15 | ALR | Interrupt |
| NC | 3 | CS | RX | 14 | NC | ||
| NC | 4 | SCK | TX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | SCL | I2C Clock | |
| NC | 6 | MOSI | SDA | 11 | SDA | I2C Data | |
| 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 |
| JP1 | VCC SEL | Left | Logic Voltage Level Selection 3V3/5V: Left position 3V3, Right position 5V |
CURRENT 3 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | -0.3 | - | 26 | V |
| Voltage on SENSE terminal | -0.3 | - | 26 | V |
| Peak Detector Threshold Range | - | 80 | - | mV |
| Peak Detector Duration Range | - | 3072 | - | ms |
| Operating Temperature Range | -40 | - | +85 | °C |
Frequently Asked Questions
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