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Carte de commande LED 17 Click
Carte de commande LED 17 Click
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Key Features:
- Pilote LED en mode abaisseur, 500 mA, gradation PWM, large tension d'alimentation d'entrée, tension de sortie adaptée aux LED haute puissance 16 V, fonctions de protection, fréquence de commutation réglable, détection et indication de défaut, etc.
- Basé sur le contrôleur DC/DC LTR3755 d'Analog Devices
- Peut être utilisé pour des applications qui nécessitent une puissance de sortie élevée, telles que l'éclairage commercial et industriel
- mikroBUS : interface PWM
Présentation du LED Driver 17 Click Board™ - La solution ultime pour le contrôle des LED
Découvrez le LED Driver 17 Click Board™, une carte complémentaire compacte et polyvalente qui offre une solution simple mais puissante pour contrôler plusieurs LED dans diverses applications. Que vous travailliez sur l'éclairage architectural, l'éclairage général ou que vous exploriez simplement votre créativité avec les LED, c'est le choix parfait pour vous !
Présentant le LTR3755 - Un contrôleur CC/CC à haute efficacité d'Analog Devices
Au cœur de cette carte remarquable se trouve le LTR3755, un contrôleur DC/DC hautement efficace conçu pour fonctionner comme une source de courant constant. Avec la possibilité de piloter facilement des LED à courant élevé et des MOSFET de puissance à canal N externes côté bas intégrés, la LED Driver 17 Click Board™ assure un fonctionnement stable sur une large plage d'alimentation.
Fonctions complètes de protection des LED
Conçu pour la sécurité de l'utilisateur, le LED Driver 17 Click Board™ offre plusieurs fonctions de protection essentielles pour vos LED, notamment une protection contre les surtensions et les surintensités. De plus, la broche de réglage de fréquence vous permet de programmer la fréquence de commutation de 100 kHz à 1 MHz, optimisant ainsi l'efficacité et les performances en fonction de vos besoins.
Prise en charge par mikroSDK - Simplification du développement logiciel
En matière de développement logiciel, le LED Driver 17 Click Board™ est fait pour vous. Il est pris en charge par une bibliothèque compatible mikroSDK, qui comprend des fonctions qui facilitent le développement logiciel. Ce Click board™ est un produit entièrement testé, prêt à être intégré dans n'importe quel système équipé de la prise mikroBUS™.
Un choix polyvalent pour les amateurs et les professionnels
Que vous soyez amateur ou professionnel, le LED Driver 17 Click Board™ est le choix idéal pour contrôler plusieurs LED dans différents environnements. Avec ses fonctionnalités complètes, sa facilité d'utilisation et ses performances fiables, ce Click board™ améliorera sans aucun doute vos projets et applications LED.
How Does The LED Driver 17 Click Board™ Work?
The LED Driver 17 Click Board™ is based on the LT3755, a highly efficient DC/DC controller from Analog Devices. This Click board™ is designed as a Buck mode LED driver with the ability to output 500mA, offering, in addition, PWM dimming functionality. The LTR3755, a highly efficient DC/DC controller, operates as a constant-current source, features onboard low-side external N-channel power MOSFETs, which are driven from an internal regulated supply, and it is capable of driving high-power 16V LEDs. Due to its high efficiency and reliable protection features, this board can be used in applications that require consistent and precise LED lighting control. It can also be used in applications that demand high power output, such as commercial and industrial lighting.
In terms of connectivity, this solution is designed to be controlled via the PWM pin of the mikroBUS™ socket to provide LED dimming control with ratios of up to 3000:1. In addition, the LT3755 also has a frequency adjust pin that allows the user to program the switching frequency from 100kHz to 1MHz. This feature is performed via an onboard R5 resistor, with the 800kHz set as the default value to optimize efficiency and performance.
Besides the PWM pin, this Click board™ also features a fault pin labelled FLT, which is routed to the default interrupt INT position of the mikroBUS™ socket. This fault pin indicates any fault conditions to an external system, including overvoltage and overcurrent protection. Besides information via the mikroBUS™ socket, the fault signal is visually indicated via a red LED labelled LD2. This LED Driver 17 Click supports an external power supply for the driver, which can be connected to the input terminal labelled VIN and should be within the range of 22V to 36V.
The LED Driver 17 Click Board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. 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 | LED Drivers |
| Applications | It can be used for applications that demand high power output, such as commercial and industrial lighting |
| On-board modules | LTR3755 - DC/DC controller from Analog Devices |
| Key Features | Buck mode LED driver, 500mA, PWM dimming, wide input voltage supply, output voltage suitable for 16V high power LEDs, protection features, adjustable switching frequency, fault detection and indication, and more |
| Interface | PWM |
| Compatibility | mikroBUS |
| Click board size | L (57.15 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the LED Driver 17 Click Board™ pinout corresponds to the pinout on the mikroBUS™ socket (the latter is shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | PWM | PWM Signal | |
| NC | 2 | RST | INT | 15 | FLT | Fault Signal | |
| NC | 3 | CS | RX | 14 | NC | ||
| NC | 4 | SCK | TX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | NC | ||
| NC | 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 |
| LD2 | LD2 | - | Fault LED Indicator |
| JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
LED DRIVER 17 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 5 | V |
| Input Voltage Range | 22 | - | 36 | V |
| Output Current | - | 500 | - | mA |
Software Support
We provide a library for the LED Driver 17 Click Board™ and a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on the MikroE Github account.
Library Description
This library contains API for the LED Driver 17 Click Board™ driver.
Key functions
-
leddriver17_get_fault_pinThis function returns the fault (FLT) pin logic state. -
leddriver17_set_duty_cycleThis function sets the PWM duty cycle in percentages ( Range[ 0..1 ] ).
Example Description
This example demonstrates the use of LED Driver 17 Click board™ by changing the LED dimming level.
void application_task ( void )
{
static int8_t duty_cnt = 1;
static int8_t duty_inc = 1;
float duty = duty_cnt / 10.0;
if ( !leddriver17_get_fault_pin ( &leddriver17 ) )
{
log_printf( &logger, " Fault detected!rn" );
}
leddriver17_set_duty_cycle ( &leddriver17, duty );
log_printf( &logger, " Duty: %u%%rnn", ( uint16_t ) ( duty_cnt * 10 ) );
Delay_ms( 500 );
if ( 10 == duty_cnt )
{
duty_inc = -1;
}
else if ( 0 == duty_cnt )
{
duty_inc = 1;
}
duty_cnt += duty_inc;
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.LEDDriver17
Additional Notes and Information
Depending on the development board you are using, you may need USB UART Click Board™, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MIKROE compilers.
MIKROSDK
The LED Driver 17 Click Board™ is supported with the mikroSDK - MIKROE Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
Carte de commande LED 17 Click
Frequently Asked Questions
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