Mikroelektronika d.o.o.
Strombegrenzung 5 Click Board
Strombegrenzung 5 Click Board
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Key Features
Overview
Das Current Limit 5 Click Board™ ist eine kompakte Zusatzplatine, die eine Strombegrenzungslösung darstellt. Diese Platine verfügt über den MIC2099, einen Strombegrenzungs-Stromverteilungsschalter von Microchip Technology. Dieses Click Board™ stellt eine programmierbare Strombegrenzungslösung mit verschiedenen Schutzfunktionen und Fehleranzeige dar, die in einem Eingangsspannungsbereich von 2,5 V bis 5,5 V betrieben wird. Außerdem ist die Strombegrenzung von 100 mA bis 1,05 A einstellbar und über das digitale Potentiometer MCP4561 programmiert. Dieses Click Board™ ist für Anwendungen in tragbaren Geräten und Zustandsüberwachung oder Stromversorgungen geeignet und schützt diese bei Kurzschlüssen oder anderen Überlastbedingungen.
Das Current Limit 5 Click Board™ wird von einer mikroSDK-kompatiblen Bibliothek unterstützt, die Funktionen enthält, die die Softwareentwicklung vereinfachen. Dieses Click Board™ wird als vollständig getestetes Produkt geliefert und ist bereit für den Einsatz auf einem System, das mit der mikroBUS™-Buchse ausgestattet ist.
| General Information | |
|---|---|
Part Number (SKU) |
MIKROE-4999
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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 |
8606027389115
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Warranty |
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How Does The Current Limit 5 Click Board™ Work?
The Current Limit 5 Click Board™ is based on the MIC2099, a current-limiting device with an adjustable overcurrent protection feature from Microchip Technology. The MIC2099 offers flexible protection boundaries for systems against input voltage ranging from 2.5V to 5.5V and limits the output load current to a programmed level (up to 1.05A). Additional safety features include thermal shutdown protection to prevent overheating, under-voltage lock-out, a soft start that prevents large current inrush, as well as automatic-on output after a fault condition.
The current-limit switch is virtually ubiquitous in system control and provides a safe means for regulating the current delivered to a load circuit. It allows the load current to increase to a programmed limit but no higher. Typically, the current limit is a function of the voltage across an external resistor, and this voltage serves as the reference for an internal current-limiting amplifier. By replacing the resistor with a digital potentiometer, you can easily program the current limit as performed on this Click board™. For this purpose, the digital potentiometer MCP4561 from Microchip Technology which communicates with the MCU via 2-Wire I2C serial interface, is used to set the resistance on the MIC2099 LIMIT pin, adjusting the current limit for the switch between 0.1A to 1.05A.
The Current Limit 5 Click Board™ can be enabled or disabled through the EN pin routed to the CS pin of the mikroBUS™ socket; hence, offering a switch operation to turn ON/OFF power delivery to the connected load. It also provides a fault status indication signal, labelled as FLT and routed to the INT pin of the mikroBUS™ socket, alongside its LED indicator marked as FAULT to indicate different fault conditions such as current limit and thermal shutdown.
The Current Limit 5 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. It allows for both 3.3V and 5V capable MCUs to use the communication lines properly. Additionally, there is a possibility for the MIC2099 power supply selection via jumper labelled as VIN SEL to supply the MIC2099 from an external power supply VEXT terminal in the range from 2.5V to 5.5V or with VCC voltage levels from mikroBUS™ power rails. 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 | The Current Limit 5 Click Board™ can be used for applications in portable equipment and condition monitoring or power supplies, protecting them in short circuits or other overload conditions |
| On-board modules | MIC2099 - current-limiting device with an adjustable overcurrent protection feature from Microchip Technology |
| Key Features | Integrated protection features, programmable current limiting up to 1.05A, soft start that prevents large current inrush, enable feature, automatic-on output after fault, and more |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | M (42.9 x 25.4 mm) |
| Input Voltage | 3.3V or 5V,External |
PINOUT DIAGRAM
This table shows how the pinout of the Current Limit 5 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 | FLT | Fault Indication | |
| Enable | EN | 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 |
| LD2 | FAULT | - | Fault Status LED Indicator |
| JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
| JP2 | VIN SEL | Left | MIC2099 Power Supply Selection INT/EXT: Left position INT, Right position EXT |
CURRENT LIMIT 5 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage VCC | 3.3 | - | 5 | V |
| External Supply Voltage VEXT | 2.5 | - | 5.5 | V |
| Current Limit Range | 0.1 | - | 1.05 | A |
| Operating Temperature Range | -40 | +25 | +85 | °C |
Frequently Asked Questions
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