WS2512 4 X 4 Power Amplifier Module

The WSH412 is designed to integrate a Hall sensor with complementary output drivers and a frequency generator on a single chip. It is suitable for applications such as speed measurement, revolution counting, positioning, and DC brushless motors. The device includes a temperature-compensated voltage regulator, a differential amplifier, a hysteresis controller, two open-collector output drivers capable of sinking a 600 mA current load, and an open-collector frequency generator capable of sinking a 10 mA current load. An on-chip protection diode is implemented to prevent reverse power faults. Additionally, it features built-in thermal lock protection and an auto-restart function, making it suitable for high-speed fan applications. The device can replace the functions of lock protection and auto-restart. Power will automatically shut down at 130°C to prevent damage to the coils and will auto-restart after cooling down. This product is manufactured by Winson Semiconductor Corp.

The WSH412 integrates multiple functionalities essential for efficient motor control and sensing applications within a compact design. The Hall sensor provides accurate detection of magnetic fields, enabling precise speed and position measurements. The complementary output drivers are designed to handle significant current loads, making them suitable for driving larger loads in various applications, including DC brushless motors.

The temperature-compensated voltage regulator ensures stable operation across varying temperature conditions, which is critical in applications where temperature fluctuations may affect performance. The differential amplifier enhances signal integrity by amplifying the Hall sensor output while reducing noise, thus improving overall system reliability.

The hysteresis controller is crucial for preventing false triggering in noisy environments, thereby ensuring that the output signals remain stable and accurate. The open-collector output drivers facilitate easy interfacing with other components in a circuit, allowing for flexible design choices.

The implementation of an on-chip protection diode is a significant feature that safeguards the device against reverse polarity, which can occur in various circuit configurations. The built-in thermal lock protection mechanism is vital for high-speed operations, as it prevents overheating by shutting down the device when temperatures exceed 130°C. This feature not only protects the WSH412 itself but also prevents damage to connected components, such as motor coils.

The auto-restart function enhances the reliability of the system by automatically reactivating the device once it has cooled down, minimizing downtime and maintaining operational efficiency. The WSH412's design and features make it an ideal choice for applications requiring robust performance, such as in high-speed fans and other motor-driven systems, ensuring long-term reliability and functionality.WSH412 is designed to integrate Hall Sensor with complementary output drivers and frequency generator together on the same chip, it is suitable for speed measurement, revolution counting, positioning, and DC brushless motors. It includes a temperature compensated voltage Regulator a Differential Amplifier a Hysteresis controller, two open-collecto

r output drivers capable of sinking 600mA current load and an open-collector frequency generator capable of sinking 10mA current load. An on-chip Protection Diode is implemented to prevent reverse power fault. And built-in thermal lock protection and auto-restart function is suitable for super high speed fan. It CAN replace the function of lock protection and auto restart function. The power will be shutdown automatically at 130C to prevent the coils be damaged and atuo-restart after cooling down.

By Winson Semiconductor Corp. 🔗 External reference