Mikroelektronika d.o.o.
MIC24045 Click-Platine
MIC24045 Click-Platine
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Das MIC24045 Click Board™ basiert auf dem I2C-programmierbaren, hocheffizienten 5A-Synchron -Abwärtsregler MIC24045 von Microchip mit großem Eingangsbereich.
Das MIC24045 Click Board™ ist für den Betrieb mit 3,3 V oder 5 V Stromversorgung ausgelegt. Es kommuniziert mit dem Zielmikrocontroller über die I2C-Schnittstelle mit zusätzlicher Funktionalität, die durch die folgenden Pins auf der MikroBUS-Leitung bereitgestellt wird: RST, INT.
The MIC24045 Click Board™ carries MIC24045 I2C-programmable, high-efficiency, wide input range, 5A synchronous step-down regulator from Microchip. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over I2C interface with additional functionality provided by the following pins on the mikroBUS™ line: RST, INT.
MIC24045 REGULATOR FEATURES
The MIC24045 is a digitally programmable, 5A valley current-mode controlled regulator featuring an input voltage range from 4.5V to 19V.
The MIC24045 is perfectly suited for multiple voltage rail application environments, typically found in computing and telecommunication systems.
THERMAL WARNING AND THERMAL SHUTDOWN
The MIC24045 has a thermal shutdown protection that prevents operation at excessive temperature. The thermal shutdown threshold is typically set at +160°C with a hysteresis of +25°C.
The MIC24045 features a Thermal Warning flag that is readable through the I2C interface (register polling is needed). The Thermal Warning flag signals the approaching of thermal shutdown, so that appropriate system-level countermeasures can be undertaken.
How Does The MIC24045 Click Board™ Work?
The MIC24045 Click Board™ is designed to lower the voltage on the input from 4.5V-19V to 0.64V-5.25V. The same voltage is used for powering the MCP24045 IC (TB1 and TB2 connectors).
The voltage on the mikroBUS™ I2C pin can be either 3.3V or 5V, depending on the jumper position. The selected mikroBUS™ power supply is used only for the pull-ups on I2C lines.
SPECIFICATIONS
| Type | Boost |
| Applications | Servers, Data Storage, Routers and Base Stations, FPGAs, DSP and Low-Voltage ASIC Power |
| On-board modules | MIC24045 I2C-programmable, high-efficiency, wide input range, 5A synchronous step-down regulator |
| Key Features | 4.5V to 19V Input Voltage Range, 5A (maximum) Output Current, Switching Frequency: 310 kHz, 400 kHz, 500 kHz, 570 kHz, 660 kHz, 780 kHz, 1 MHz, 1.2 MHz |
| Interface | GPIO,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 MIC24045 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 | ||
| Precision Enable Input Pin | ENABLE | 2 | RST | INT | 15 | PG | Power Good Open-Drain Output Pin |
| NC | 3 | CS | TX | 14 | NC | ||
| NC | 4 | SCK | RX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | I2C SCL | I2C Clock Input Pin | |
| NC | 6 | MOSI | SDA | 11 | I2C SDA | I2C Data Input/Output Pin | |
| Power supply | +3.3V | 7 | 3.3V | 5V | 10 | +5V | Power supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
MAXIMUM RATINGS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Range | 4.5 | 19 | V | |
| Externally Applied Analog and Drivers Supply Voltage | 4.5 | 5.5 | V | |
| Enable Voltage (VEN) | VDDA | V | ||
| Power-Good (PG) Pull-up Voltage (VPU_PG) | 0 | 5.5 | V | |
| Output Current | 5 | A | ||
| Junction Temperature | -40 | 120 | °C |
Software Support
Code examples for the MIC24045 Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.
CODE SNIPPET
The following code snippet calls initialization functions, and then slowly decrements the voltage from maximum value down to the minimum.
01 void main()
02 {
03 system_init();
04 mic_24045_init(0x50);
05 Delay_ms (100);
06 i = 21;
07 while (i)
08 {
09 write_1 = i*0.25;
10 mic_24045_write_vout (write_1);
11 GPIOC_ODR = 0x04; /* Sets EN pin to 1 */
12 Delay_ms (1000);
13
14 read_2 = mic_24045_read_vout ();
15 FloatToStr (read_2, &uart_text);
16
17 if (read_2 > 1)
18 uart_text [5] = 0;
19
20 UART_Write_Text ("rn");
21 UART_Write_Text (uart_text);
22
23 GPIOC_ODR = 0x00;
24 Delay_ms (1000);
25 i--;
26 }
27 }
MIC24045 Click-Platine
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