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EMC6W201

EMC6W201 3 Channel Fan Controller with 5 tach inputs, 6 temperature monitors, 6 voltage monitors, and 2 proc hot channel

Status: End of Life

Features:

  • 3.3 Volt Operation (5 Volt Tolerant Input Buffers)
  • SMBus Address Change Pin
  • SMBus Address Enable Pin
  • PWM (Pulse Width Modulation) Outputs (3)
  • Low Frequency and High Frequency PWM Options (15kHz up to 30kHz)
  • Fan Tachometer or Lock Rotor Inputs (4)
  • Programmable Automatic Fan Control Based on Temperature
  • Acoustic Enhancement Mode
  • ProcHot Pins Modulate Tmin
  • Fan RPM Is a Function of Up to Three Temperatures and ProcHot Signals
  • Piecewise Linear Fan Control Algorithm Option
  • Monitoring of Up to Five Remote Thermal Diodes (+/- 3 Deg C Accuracy)
  • Internal Ambient Temperature Measurement
  • Limit Comparison of All Monitored Values
  • Interrupt Pin for Out-of-Limit Temperature Indication
  • Configurable Offset for Internal or External Temperature Channels
  • Monitor Power Supplies (+1.5V, +2.5V, +5V, VCC and Two 1.5V VCCP)
  • Limit Comparison of All Monitored Values
  • Interrupt Pin for Out-of-Limit Voltage Indication
  • Selectable Pins Dedicated As Input or Input/Output
  • Separate ProcHot Output Pin (FORCED_PR#)
  • Power Good Output
  • SMBus Alert Interrupt Output
  • Individual Enables/Disables for Each Input
  • Two ISRs for Each Alert
  • XOR Tree Test Mode
  • Mechanical Package: 36-pin QFN; RoHS Compliant
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The EMC6W201 is an environmental monitoring device with automatic fan control capability and enhanced system acoustics for noise suppression. This ACPI compliant device provides hardware monitoring for up to six voltages (including its own VCC) and five external thermal sensors, measures the speed of up to five fans, and controls the speed of multiple DC fans using three Pulse Width Modulator (PWM) outputs. Note that it is possible to control more than three fans by connecting two fans to one PWM output. The EMC6W201 will be available in a 36-pin QFN package.

The EMC6W201 includes support for monitoring six thermal sensors: five external and one internal. The external temperatures are measured via thermal diode inputs capable of monitoring remote devices. In addition, it is equipped with an ambient temperature sensor for measuring the internal temperature.

The EMC6W201 hardware monitor provides analog inputs for monitoring external voltages of +1.5V, +2.5V, +5V, and two Vccp voltages. This device has the capability to monitor its own internal VCC power supply, which may be connected to either main power (VCC) or the suspend power well (VTR). External components are not required for voltage scaling or similar treatment.

Pulse Width Modulators (PWM) will control the speed of the fans by varying the output duty cycle of the PWM. The Ramp Rate Control feature controls the rate of change of the PWM output, thereby reducing system noise created by changing the fan speed. The speed of each fan is monitored by a Fan Tachometer input. The measured values are compared to values stored in Limit Registers to detect if a fan has stalled or seized.

Fan speed may be under host software control or automatic. In host control mode, the host software continuously monitors temperature and fan speed registers, makes decisions as to desired fan speed and sets each PWM to drive the required fan speed. The PWM frequency is adjustable up to 30kHz. The EMC6W201 device offers an interrupt output signal (INT#), which may be used to interrupt the host on out-of-limit temperature or voltage condition enabling an ACPI response as opposed to the host software continuously monitoring status.

In auto "zone" mode, the EMC6W201 logic continuously monitors the temperature and fan speeds and adjusts speeds without intervention from the host CPU. Fan speed is adjusted according to an algorithm using the temperature measured in the selected zone, the high and low limits set by the user, and the current fan speed. The part can automatically adjust its operation based on its environment for improved acoustic behavior.

Additional Features

    Note: The EMC6W201 is not recommended for new designs.

    Features

    • 3.3 Volt Operation (5 Volt Tolerant Input Buffers)
    • SMBus 2.0 Compliant Interface (Fixed, Not Discoverable) with Three Slave Address Options
      • SMBus Address Change Pin
      • SMBus Address Enable Pin
    • Auto-Fan Control with ProcHot Features
      • PWM (Pulse Width Modulation) Outputs (3)
      • Low Frequency and High Frequency PWM Options (15kHz up to 30kHz)
      • Fan Tachometer or Lock Rotor Inputs (4)
      • Programmable Automatic Fan Control Based on Temperature
      • Acoustic Enhancement Mode
      • ProcHot Pins Modulate Tmin
      • Fan RPM Is a Function of Up to Three Temperatures and ProcHot Signals
      • Piecewise Linear Fan Control Algorithm Option
    • Temperature Monitor
      • Monitoring of Up to Five Remote Thermal Diodes (+/- 3 Deg C Accuracy)
      • Internal Ambient Temperature Measurement
      • Limit Comparison of All Monitored Values
      • Interrupt Pin for Out-of-Limit Temperature Indication
      • Configurable Offset for Internal or External Temperature Channels
    • Voltage Monitor
      • Monitor Power Supplies (+1.5V, +2.5V, +5V, VCC and Two 1.5V VCCP)
      • Limit Comparison of All Monitored Values
      • Interrupt Pin for Out-of-Limit Voltage Indication
    • ProcHot Input/Bi-Directional Pins (2)
      • Selectable Pins Dedicated As Input or Input/Output
      • Separate ProcHot Output Pin (FORCED_PR#)
    • Power Good Output
    • SMBus Alert Interrupt Output
    • Register Characteristics
      • Individual Enables/Disables for Each Input
      • Two ISRs for Each Alert
    • XOR Tree Test Mode
    • Mechanical Package: 36-pin QFN; RoHS Compliant
Parametrics
Name
Value
Device Description
Programmable Triple Fan Manager
Typical Accuracy (°C)
±0.25
Over Temp Alert
yes
SM Bus
yes
Predictive Fan Fault
yes
Max. Accuracy @ 25°C (°C)
±3.0
Integrated Temp Sensor
Yes
External Temp Input
Yes
Auto Shutdown
Yes
High/Low PWM Freq
High & Low
Fan Speed Table
Yes
Temp Range (°C)
0 to 70
Vcc Range (V)
+3.0 to +3.6

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
EMC6W201-AEZG
0.150600
0.959184
36
VQFN
6x6x1.0mm
Matte Tin
e3
EMC6W201-AEZG-TR
0.150600
0.236667
36
VQFN
6x6x1.0mm
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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