Microchip Technology Microchip EMC2301 RPM-Based PWM Fan Controller
Microchip EMC2301 RPM-Based PWM Fan Controller is an SMBus-compliant fan controller with a PWM fan driver. The fan driver is controlled by a programmable frequency PWM driver and Fan Speed Control algorithm that operates in either a closed-loop fashion or as a directly PWM-controlled device. Each closed loop Fan Speed Control algorithm is able to detect aging fans and alert the system. The algorithm can also detect stalled or locked fans and trigger an interrupt. Microchip EMC2301 also offers a clock output so that multiple devices may be chained and slaved to the same clock source for optimal performance in large distributed systems.
EMC2301 is featured on the MikroElektronika MIKROE-2004 click board.
Features
- Programmable Fan Control circuit
- 4-wire fan compatible
- 3.0V to 3.6V voltage range
- -40°C to +125°C operating temperature range
- High-speed PWM (26kHz)
- Low-speed PWM (9.5Hz to 2240Hz)
- Optional detection of aging fans
- Fan Spin Up Control and Ramp Rate Control
- Alert on Fan Stall
- Watchdog Timer
- RPM-based fan control algorithm
- 0.5% accuracy from 500RPM to 16kRPM (external crystal oscillator)
- 1% accuracy from 500RPM to 16kRPM (internal clock)
- SMBus 2.0 Compliant
- SMBus Alert compatible
- CLK Pin can provide a clock source output
Applications
- Servers
- Projectors
- Industrial and Networking Equipment
- Notebook Computers
Development Tools
Mikroe MIKROE-2004 Fan click
Features the EMC2301 controller for powering and regulating the operation of 5V four-wire fans.
Block Diagram
Published: 2016-01-04
| Updated: 2022-03-11