W83627DHG-AC TR

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W83627DHG-AC TR is a fan controller and system monitoring IC from Winbond, a world leading Data Storage, Ultrasound Imaging, and Semiconductor Memory Solutions provider. This integrated circuit offers multi-function monitoring capabilities for fan, temperature and voltage control in a single package. It is a highly integrated, robust low power solution for fan control in embedded systems.

Application Field

W83627DHG-AC TR is primarily used for fan control, temperature monitoring and overload protection in a variety of embedded system applications. As fan control is essential to ensure the proper cooling of microcontrollers and other IC components, the W83627DHG-AC TR integrated circuit provides a highly efficient and cost-effective solution. The built-in temperature sensors can be used to detect critical temperature thresholds and turn off the fan or system, therefore providing additional protection against malfunctions. Additionally, other applications such as system monitoring, voltage and temperature measurement may also be implemented within the controller\'s capabilities.

Working Principle

At its core, the W83627DHG-AC TR features two 16-bit fan controllers which operate either in full speed or pulse width modulation (PWM) modes for precise fan speed control. It includes a 4MHz external oscillator, a pulse-width modulation signal generating circuit, a SVID interface, an I2C bus, a Low Voltage Detect (LVD) circuit and can accommodate up to 8 temperature sensing points. For current monitoring, the IC has 8 current sensing pins with 0 to 3.3V reference voltage that can measure up to 3.3Amps of average current.

When using PWM mode, the W83627DHG-AC TR can control both voltage and current, allowing users to control the fan speed and monitor fan status such as revolutions per minute (RPM). The IC also features a temperature compensation system to ensure that the fan speed remains constant at various operating temperature levels. Furthermore, the fan controller also supports a variety of commands such as setting the locked fan speed, setting the fan power-on delay, adjust the fan duty cycle, and achieve fan speed hysteresis.

The W83627DHG-AC TR also features an adjustable voltage overload detection system that can be used to detect an over-current condition, thereby preventing system failure due to fluctuations in current. In addition, the monitoring IC includes built-in voltage regulators for supplying VCC and VIO voltages. The IC\'s in-built watchdog timer (WDT) can be used to signal system reset or shut down if a critical temperature threshold is reached, thereby providing additional protection for the system. The W83627DHG-AC TR is a highly efficient and cost-effective solution for fan control and system monitoring in embedded systems.

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