MIKROE-2708

MIKROE-2708 Datasheet

PID MIKROE-2708

Part	Datasheet
MIKROE-2708	MIKROE-2708 (pdf)

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Fan 2 click PID MIKROE-2708 Fan 2 click carries the MAX31760 precision controller. It can measure temperature and adjust the fan speed to keep the temperature at the same level. Fan 2 click can also control two fans at the same time. 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 INT, AN, RST, CS. For example, you can set the limit at 25°C and if the temperature goes over that the click will activate the fan it will keep working until the temperature is 25°C again. MAX31760 controller features The MAX31760 integrates temperature sensing along with precision PWM fan control. It accurately measures its local die temperature and the remote temperature of a discrete diodeconnected transistor, such as a 2N3906, or a thermal diode commonly found on CPUs, graphics processor units GPUs , and other ASICs. Multiple temperature thresholds, such as local high/overtemperature OT and remote high/overtemperature, can be set by an I2C-compatible interface. Fan speed is controlled based on the temperature reading as an index to a 48-byte lookup table LUT containing user-programmed PWM values. The flexible LUT-based architecture enables the user to program a smooth nonlinear fan speed vs. temperature transfer function to minimize acoustic fan noise. Two tachometer inputs allow measuring the speeds of two fans independently. See the datasheet for more information. How it works The click carries a 10-pole terminal block, that allows easy connection for pairs of two, three or four wire DC fans, on the standard way of connection via PWM, TACH, GND, VFAN lines. A single onboard jumper setting enables 2 or 3 wire fan connection. In addition, there are two points DXP, DXN on the same terminal for external temperature sensor connection. The click communicates with the MCU over data interface voltage level of 3.3V only. Specifications Type For speed control of DC fans 5/12 VDC than could be found on PCs, servers, network equipment, and devices, and many other consumer electronics, or storage containers like RAID systems etc. modules MAX31760 precision controller Key Benefits Temperature sensor Interface Input Voltage 3.3V or 5V Click board size M x mm Pinout diagram This table shows how the pinout on Fan 2 click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns . Notes Notes #ALERT, active low, local/remote overtemperature fault ALR 1 AN PWM 16 NC #SHDN, active low overtemperature shutdown fault 2 RST 15 INT #INT, active low, at least one of the three faults has occurred #FANFAULT, active low, fan speed fault 14 NC NC 4 SCK RX 13 NC NC 5 MISO SCL 12 SCL I2C line NC 6 MOSI SDA 11 SDA I2C line Power supply +3.3V 7 3.3V 5V 10 +5V Power supply Ground GND 8 GND 9 GND Ground

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Fan 2 click

PID MIKROE-2708

Fan 2 click carries the MAX31760 precision controller. It can measure temperature and adjust the fan speed to keep the temperature at the same level. Fan 2 click can also control two fans at the same time.

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 INT, AN, RST, CS.

For example, you can set the limit at 25°C and if the temperature goes over that the click will activate the fan it will keep working until the temperature is 25°C again.

MAX31760 controller features

The MAX31760 integrates temperature sensing along with precision PWM fan control. It accurately measures its local die temperature and the remote temperature of a discrete diodeconnected transistor, such as a 2N3906, or a thermal diode commonly found on CPUs, graphics processor units GPUs , and other ASICs. Multiple temperature thresholds, such as local high/overtemperature OT and remote high/overtemperature, can be set by an I2C-compatible interface.

Fan speed is controlled based on the temperature reading as an index to a 48-byte lookup table LUT containing user-programmed PWM values. The flexible LUT-based architecture enables the user to program a smooth nonlinear fan speed vs. temperature transfer function to minimize acoustic fan noise. Two tachometer inputs allow measuring the speeds of two fans independently.

See the datasheet for more information.

How it works

The click carries a 10-pole terminal block, that allows easy connection for pairs of two, three or four wire DC fans, on the standard way of connection via PWM, TACH, GND, VFAN lines.

A single onboard jumper setting enables 2 or 3 wire fan connection. In addition, there are two points DXP, DXN on the same terminal for external temperature sensor connection. The click communicates with the MCU over data interface voltage level of 3.3V only.

Specifications

Type

For speed control of DC fans 5/12 VDC than could be found on PCs, servers, network equipment, and devices, and many other consumer electronics, or storage containers like RAID systems etc.
modules

MAX31760 precision controller

Key Benefits Temperature sensor

Interface

Input Voltage 3.3V or 5V

Click board size

M x mm

Pinout diagram

This table shows how the pinout on Fan 2 click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns .

Notes

Notes
#ALERT, active low, local/remote overtemperature fault

ALR 1 AN PWM 16 NC
#SHDN, active low overtemperature shutdown fault
2 RST
15 INT
#INT, active low, at least one of the three faults has occurred
#FANFAULT, active low, fan speed fault
14 NC

NC 4 SCK RX 13 NC

NC 5 MISO SCL 12 SCL I2C line

NC 6 MOSI SDA 11 SDA I2C line

Power supply
+3.3V 7 3.3V 5V 10 +5V Power supply

Ground

GND 8 GND 9 GND Ground

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Datasheet ID: MIKROE-2708 649402