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EMC2112

Status: In Production

Features:

  • 1% accuracy with external clock input
  • 3% accuracy with internal clock
  • Internal clock can be used as a source
  • Aging fan detection
  • 600mA drive capability
  • 1°C incremental set points for thermal shutdown
  • Cannot be disabled by software
  • Provides Reset Function (RESET#) On 5V Supply
  • ±1°C accuracy (60°C to 100°C)
  • 0.125°C resolution
  • Designed to support 45nm, 65nm, and 90nm CPU Diodes using BJT and transistor model
  • Eliminates temperature offset due to series resistance from PCB traces and thermal ''Diode''
  • 5V supply for linear fan driver and reset generator
  • User selectable SMBus address using pull-up resistor on ADDR_SEL pin
  • Supports Block Read and Write functionality
  • Available in 20-pin, 4x4 QFN RoHS Compliant package
  • Notebook Computers
  • Desktop Computers
  • Embedded Applications
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The EMC2112 is an SMBus, closed-loop, RPM-based fan driver with hardware (HW) thermal shutdown and reset controller. The EMC2112 offers a single High Side fan driver capable of sourcing up to 600mA from a 5V supply.

The EMC2112 utilizes Beta Compensation (an implementation of the BJT or transistor model for thermal diodes) and Resistance Error Correction (REC) to accurately monitor up to three (3) external temperature zones. These features allow great accuracy for CPU substrate thermal diodes on multiple process geometries as well as with discrete diode-connected transistors. Both Beta Compensation and REC can be disabled on the EMC2112 to maintain accuracy when monitoring AMD thermal diodes.

The EMC2112 provides a stand-alone HW thermal shutdown block. The HW thermal shutdown logic can be configured for a few common configurations based on the strapping level of the SHDN_SEL pin on the PCB. The HW thermal shutdown point can be set in 1°C increments by using a discrete resistor connected to the TRIP_SET pin.

The EMC2112 also provides 5V supply 'power good' function with a threshold of 4.5V. This function is provided on the RESET# pin.

Additional Features

    Features

    • Closed-Loop RPM-Based Fan Controller
      • 1% accuracy with external clock input
      • 3% accuracy with internal clock
      • Internal clock can be used as a source
      • Aging fan detection
    • Integrated Linear Fan Driver
      • 600mA drive capability
    • HW Thermal Shutdown (SYS_SHDN#)
      • 1°C incremental set points for thermal shutdown
      • Cannot be disabled by software
    • Provides Reset Function (RESET#) On 5V Supply
    • Up to Three (3) Remote Thermal Zones
      • ±1°C accuracy (60°C to 100°C)
      • 0.125°C resolution
      • Designed to support 45nm, 65nm, and 90nm CPU Diodes using BJT and transistor model
      • Eliminates temperature offset due to series resistance from PCB traces and thermal 'Diode'
    • Operates From Single 3.0 - 3.6V Supply
      • 5V supply for linear fan driver and reset generator
    • SMBus 2.0 and I2C™ compatible
      • User selectable SMBus address using pull-up resistor on ADDR_SEL pin
      • Supports Block Read and Write functionality
    • Available in 20-pin, 4x4 QFN RoHS Compliant package

     

    Applications

    • Notebook Computers
    • Desktop Computers
    • Embedded Applications
Parametrics
Name
Value
comments
Fan Controller with Thermal Mgt
# Fans Drivers
1
PWM/Linear Control
Linear
# Remote Temperature Monitors
3
Ambient Temperature Sensor
1
Typical Accuracy
±0.25
Max Accuracy
±1.0
Maximum Temperature Range
0 to 85
Vcc Range (V)
3.3 to 5.0
SMBus Alert
Yes
System Shutdown
Yes

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
EMC2112-BP-TR
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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