UC3708DWTRG4

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The UC3708DWTRG4 is a type of gate driver, a product of Texas Instruments. It is a monolithic high-side and low-side gate driver compatible with N-channel MOSFETs and IGBTs with a maximum switching speed of 25MHz. It is especially useful for capacitor-free startup applications with higher voltage rails.The UC3708DWTRG4’s main application is driving the gates of high-voltage MOSFETs with efficient power delivery. It can also be used in switching power supplies and voltage regulators, as well as for high-speed communications, such as high-speed digital video and radio frequency applications, where high switching speed is desired. It also offers fast turn-on and turn-off, fewer bottom-side ringing, and a richer feature set.The UC3708DWTRG4 has an integrated 0.65A low-side gate drive that combines two separate N-channel MOSFETs with a logic high-side gate driver, thus providing an ESD protection circuit. It also features an “overload protection” circuit that allows it to keep managing hot current in the event of a short-circuit failure. Furthermore, an “automatic turn-off” circuit will automatically stop the driver’s operation once one of the voltage or temperature features becomes at risk. The UC3708DWTRG4 can safely drive up to 33V DC, the load current at either side being 0.65A. A pull-down resistor ensures proper logic-level compatibility with either 3.3V or 5V logic input signals and the gate turning off for valid logic 0. Furthermore, a Built-in reverse current blocking diode prevents the MOSFET from being damaged by the reverse current during turn-off.The interface between the logic signal and the actual gate drive is achieved through a high-speed amplifier. This amplifier provides an input common mode voltage range of 0V to 3.0V in single-supply applications, thus it simplifies circuit design. The high-side and low-side drivers work in perfect synchrony, thus providing a fast transistor turn-on and turn-off regardless of the voltage level or process.In conclusion, the UC3708DWTRG4provides a safe, efficient and reliable way of powering high-power MOSFETs and IGBTs. Its integrated features make it a great choice for switching power supplies, voltage regulators and other high-speed applications.

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