UCC27323DGNRG4

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The UCC27323DGNRG4 is a part of Texas Instruments’ high-performance Gate Driver product series. It is designed for driving a wide range of loads, ranging from logic-level to high current MOSFETs, IGBTs and other high-side switches. This Gate Driver is based on an advanced low-voltage logic and PWM control technology with features of extreme flexibility and ultra-low quiescent current. Its primarily application field exists in dc-dc converter, and its working principle can be explained as follows.

Application Field of UCC27323DGNRG4

The UCC27323DGNRG4 has been designed for driving a wide range of loads, ranging from logic-level to high current MOSFETs, IGBTs and other high-side switches. It offers flexibility to the gate drive designs of dc-dc converters, allowing to connect multiple loads in parallel up to a total of 1000mA. Some of its key features include low quiescent current, adjustable dead-time, adjustable soft-start and active clamping. It is also available in surface-mounted and through-hole packages.

The UCC27323DGNRG4 is highly beneficial in dc-dc converters. In a typical dc-dc converter, an inductor is used to store energy between the input and output in order to pass it to the load efficiently. Generally, these converters use MOSFETs or IGBTs as switches to direct the current flow. The UCC27323DGNRG4 is commonly used to drive the MOSFETs/IGBTs efficiently, optimizing overall efficiency and enhanced system performance. It also helps to reduce EMI and ripple in the output.

Working Principle of UCC27323DGNRG4

The UCC27323DGNRG4 works by driving a high side switch using a PWM system. This system consists of two parts: the low side (LS) driver and the high side (HS) driver. The LS driver is used to switch the low-side MOSFET on or off, while the HS driver is used to switch the high-side MOSFET on or off. This is achieved by applying a high voltage signal to the high side gate of the MOSFET while the low side gate remains at zero volts.

The UCC27323DGNRG4 is able to provide fast switching times and a very low quiescent current. This makes it ideal for power-sensitive applications, as it helps to reduce the overall power dissipation requirements. The UCC27323DGNRG4 also features adjustable soft-start and active clamping, which helps to reduce inrush current and start-up time. It also features adjustable dead-time, which helps to minimize power dissipation and optimize efficiency.

Conclusion

The UCC27323DGNRG4 is an advanced Gate Driver from Texas Instruments, designed specifically for driving a wide range of loads, ranging from logic-level to high current MOSFETs, IGBTs and other high-side switching devices. Its primarily application field exists in dc-dc converter, and its working principle lies in driving a high side switch using a PWM system, consisting of two parts, the low side (LS) driver and the high side (HS) driver. The UCC27323DGNRG4 is able to provide fast switching times and a very low quiescent current, while features of adjustable soft-start and adjustable dead-time help to reduce power dissipation and optimize efficiency.

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