DS1780E

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DS1780E Application Field and Working Principle

The inherent variability of thermal issues can make effective management difficult, particularly in densely packed circuit boards. The DS1780E ultra-low power multi-channel digital temperature sensor system-on-chip (SOC) from Maxim Integrated provides advanced power monitoring and thermal management solutions for automotive systems and high-density industrial applications. The DS1780E is a breakthrough solution for PCB thermal management.

Features Of DS1780E

The DS1780E has several features and capabilities enabling it to configure, monitor, and manage thermal management solutions. The chief characteristic of the chip is its ultra-low power operation. This is achieved by employing a highly optimized design, advanced Zener voltage regulator, proprietary temperature sensor technologies, and an adjustable output configuration. The DS1780E also offers an 8-bit resolution on all four available channels. The device offers up to four separate channels for temperature sensing, as well as over temperature and open/connect detection to provide reliable thermal monitoring and management.

Accuracy and Precision of DS1780E

The DS1780E achieves better accuracy and precision through advanced temperature sensing technology and adjustable output configurations. The chip provides ±0.1°C typical accuracy across a temperature range of -40°C to +150°C, enabling accurate temperature readings in densely packed applications with limited airflow. Output resolutions of 0.5°C and 0.25°C are also available. Additionally, the proprietary temperature sensing technology enables precision measurement and eliminates the need for external temperature sensors in many applications.

Multiple Channel Configuration Settings

The DS1780E provides a total of four temperature sensing channels that can be configured for a variety of power management and thermal management applications. The device supports a minimum channel spacing of 0.45°C and features programmable channel output resolutions of 0.5°C and 0.25°C for precision temperature readings. Additionally, the device supports up to two open connections and two over-temperature warnings per channel when used in an open/connect temperature sensing application. The device is also equipped with a reset and LockDetect pin for monitoring the health of the temperature sensing channel network.

External Fan Control

The DS1780E offers external fan control to aid in cooling applications. This is accomplished by using a single MOSFET to drive the fan, which can be configured to operate in PWM or constant speed mode. Additionally, the device provides adjustable fan speed control, enabling optimal fan operation by setting a minimum, maximum, and temperature step width. The temperature step width can also be set individually for each channel.

Web-Based GUI Monitoring

The DS1780E offers a web-based graphical user interface (GUI) to provide a visual representation of the temperature sensors and fan control. The GUI is available on any web-enabled PC, and includes several features for easy monitoring and control. The GUI includes a dashboard for displaying temperature readings, a temperature graph for plotting the temperature data, a temperature table for displaying temperature highs and lows, and several other features for configuring and controlling the environment. The GUI also supports remote monitoring and control over a LAN or WAN using the device’s onboard Ethernet port.

Conclusion

The DS1780E is a breakthrough solution for PCB thermal management. The device offers the industry-leading accuracy and precision required for reliable temperature sensing, as well as external fan control for cooling applications. The device also includes a web-based GUI for easy monitoring and control, and supports remote monitoring and control over a LAN or WAN. The DS1780E provides a comprehensive solution for automotive systems and high-density industrial applications.

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