UC3706DWTR

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The UC3706DWTR is an integrated gate driver for high-voltage power devices. This application note will review the application field and working principle of the UC3706DWTR.

Applications

The UC3706DWTR is designed to drive a wide range of high voltage power devices. These include: MOSFETs, IGBTs, metal-oxide semiconductor field-effect transistors (MOSFETs), insulated-gate bipolar transistors (IGBTs), thyristors, and high side switches. It is well-suited for a variety of high voltage applications such as motor control, industrial automation, switching power supplies, UPS, and the like. It can fit in a small form factor, and is compliant with both RoHS and REACH standards.

The UC3706DWTR features a low supply voltage operation, which enables operation in both dead-time and PWM modes. It features a wide operating temperature range from -40°C to +105°C. Additionally, it has built-in ESD protection and a low electrical noise for maximum protection for sensitive devices. It can be used in a variety of configurations, including dual and quad channel devices.

Working Principle

The UC3706DWTR integrates a MOSFET driver and a high side driver into the same device. When driven by a suitable control signal, it will generate an output signal which is used to drive the MOSFET or high side switch. The driver incorporates an output buffer with monitoring and protection circuitry, which will protect the load in case of over-current or over-temperature. It also has a low reverse current leakage capability, enabling low quiescent current operation. In addition, the driver has a low junction temperature, allowing it to function optimally in high temperature applications.

The driver features a built-in input buffer, enabling it to receive signals from a wide range of source including a microcontroller or digital circuit. The output can be configured to operate in either the linear or switching mode by changing the input circuitry. In addition, the output can be split into a ‘H’ and ‘L’ sink, enabling it to drive both the MOSFET and the high side switch independently.

The UC3706DWTR integrates several additional features. These include hysteretic behavior, over-current protection, temperature sensing, supply voltage sensing, high side current sensing, and adjustable slew rate. All of these features are aimed at improving the overall performance of the driver, and allowing it to work in the most challenging applications.

Conclusion

The UC3706DWTR is a highly integrated gate driver for high voltage power devices. It features a low supply voltage operating range, a wide operating temperature range, and several features which improve the overall performance. The driver can be used to drive both MOSFETs and high side switches, and is ideal for a variety of applications including motor control, industrial automation, and switching power supplies.

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