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AMC6821-Q1

現行

車用遠端和本機溫度感測器，具自動風扇速度控制和故障偵測功能

立即訂購
產品規格表

AMC6821-Q1

現行
產品規格表 立即訂購

產品詳細資料

Local sensor accuracy (max) 2 Type Fan Controller Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type SMBus Supply voltage (max) (V) 5.5 Features PWM output, Tachometer Supply current (max) (µA) 2000 Temp resolution (max) (Bits) 11 Remote channels (#) 1 Addresses 9 Rating Automotive TI functional safety category Functional Safety-Capable
Local sensor accuracy (max) 2 Type Fan Controller Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type SMBus Supply voltage (max) (V) 5.5 Features PWM output, Tachometer Supply current (max) (µA) 2000 Temp resolution (max) (Bits) 11 Remote channels (#) 1 Addresses 9 Rating Automotive TI functional safety category Functional Safety-Capable
SSOP (DBQ) 16 29.4 mm² 4.9 x 6
  • Qualified for automotive applications:
    • Junction temperature: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Remote temperature sensor: ±3°C accuracy, 0.250°C resolution
  • Local temperature sensor: ±3°C accuracy, 0.250°C resolution
  • PWM controller
  • PWM frequency: 10 Hz to 40 kHz
  • Duty cycle: 0% to 100%, 8 bits
  • Automatic fan speed control loops
  • SMBus interface
  • Power: 2.7 V to 5.5 V
  • Package (green): SSOP-16 (4mm × 5mm)
  • RoHS-compliant
  • Latch-up exceeds 100 mA per JESD78B - class I
  • Qualified for automotive applications:
    • Junction temperature: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Remote temperature sensor: ±3°C accuracy, 0.250°C resolution
  • Local temperature sensor: ±3°C accuracy, 0.250°C resolution
  • PWM controller
  • PWM frequency: 10 Hz to 40 kHz
  • Duty cycle: 0% to 100%, 8 bits
  • Automatic fan speed control loops
  • SMBus interface
  • Power: 2.7 V to 5.5 V
  • Package (green): SSOP-16 (4mm × 5mm)
  • RoHS-compliant
  • Latch-up exceeds 100 mA per JESD78B - class I

The AMC6821-Q1 is an intelligent temperature monitor and pulse-width modulation (PWM) fan controller. It is designed for noise-sensitive or power-sensitive applications that require active system cooling. Using either a low-frequency or a high-frequency PWM signal, this device can simultaneously drive a fan, monitor remote sensor diode temperatures, and measure and control the fan speed so that it operates with minimal acoustic noise at the lowest possible speed.

The AMC6821-Q1 has three fan control modes: Auto Temperature-Fan mode, Software-RPM mode, and Software-DCY mode. Each mode controls the fan speed by changing the duty cycle of a PWM output. Auto Temperature-Fan mode is an intelligent, closed-loop control that optimizes fan speed according to user-defined parameters. This mode allows the AMC6821-Q1 to run as a stand-alone device without CPU intervention; the fan can continue to be controlled (based on temperature measurements) even if the CPU or system locks up. Software-RPM mode is a second closed-loop control. In this mode, the AMC6821-Q1 adjusts the PWM output to maintain a consistent fan speed at a user-specified target value; that is, the device functions as a fan speed regulator. Software-RPM mode can also be used to allow the AMC6821-Q1 to operate as a stand-alone device. The third mode, Software-DCY, is open-loop. In Software-DCY mode, the PWM duty cycle is set directly by the value written to the device.

The AMC6821-Q1 has a programmable SMBALERT output to indicate error conditions and a dedicated FAN-FAULT output to indicate fan failure. The THERM pin is a fail-safe output for over-temperature conditions that can be used to throttle a CPU clock. Additionally, the OVR pin indicates the over-temperature limit as well. All of the alarm thresholds are set through the device registers. The AMC6821-Q1 is available in a SSOP-16 package.

The AMC6821-Q1 is an intelligent temperature monitor and pulse-width modulation (PWM) fan controller. It is designed for noise-sensitive or power-sensitive applications that require active system cooling. Using either a low-frequency or a high-frequency PWM signal, this device can simultaneously drive a fan, monitor remote sensor diode temperatures, and measure and control the fan speed so that it operates with minimal acoustic noise at the lowest possible speed.

The AMC6821-Q1 has three fan control modes: Auto Temperature-Fan mode, Software-RPM mode, and Software-DCY mode. Each mode controls the fan speed by changing the duty cycle of a PWM output. Auto Temperature-Fan mode is an intelligent, closed-loop control that optimizes fan speed according to user-defined parameters. This mode allows the AMC6821-Q1 to run as a stand-alone device without CPU intervention; the fan can continue to be controlled (based on temperature measurements) even if the CPU or system locks up. Software-RPM mode is a second closed-loop control. In this mode, the AMC6821-Q1 adjusts the PWM output to maintain a consistent fan speed at a user-specified target value; that is, the device functions as a fan speed regulator. Software-RPM mode can also be used to allow the AMC6821-Q1 to operate as a stand-alone device. The third mode, Software-DCY, is open-loop. In Software-DCY mode, the PWM duty cycle is set directly by the value written to the device.

The AMC6821-Q1 has a programmable SMBALERT output to indicate error conditions and a dedicated FAN-FAULT output to indicate fan failure. The THERM pin is a fail-safe output for over-temperature conditions that can be used to throttle a CPU clock. Additionally, the OVR pin indicates the over-temperature limit as well. All of the alarm thresholds are set through the device registers. The AMC6821-Q1 is available in a SSOP-16 package.
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類型 標題 日期
* Data sheet AMC6821-Q1 Intelligent Temperature Monitor and PWM Fan Controller datasheet (Rev. A) PDF | HTML 2023年 1月 4日
Functional safety information AMC6821-Q1 Functional Safety FIT Rate and FMD PDF | HTML 2023年 1月 4日
Technical article How to maximize powertrain efficiency and reliability with high-accuracy temperatu PDF | HTML 2021年 5月 10日

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