UCC37323D

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PMIC Gate Drivers

For those looking to maximize power management efficiency and performance, a PMIC gate driver, such as the UCC37323D from Texas Instruments, can provide an effective solution. This article explains the application fields of and the working principle behind UCC37323D PMIC gate drivers.

Application Field

UCC37323D gate drivers are ideal for driving synchronous rectifier MOSFETs or inductives for redundant and N+1 systems in applications such as servers, converters, UPS, and telecom systems. They feature high switching energy efficiency, low shoot-through current, and good EMC performance, as well as a wide control and operating range.

The drivers are packaged in a compact 8-pin SOIC, with a wide 4.5-36V VCC range, making them well-suited for low-input voltage, high-current applications in which efficiency and reliability are paramount. The UCC37323D drivers feature robust ESD protection, making them suitable for a variety of electrical environments.

Working Principle

UCC37323D gate drivers are designed to switch synchronous rectifier MOSFETs with a minimum of shoot through current. The drivers feature a low propagation delay of 12-nS (typ.), and a rise and fall time of 1.7-uS (typ.), allowing for fast switching, and avoiding both overheating and power loss. They are also designed for low electromagnetic interference (EMI) to ensure that the environment surrounding the driver is protected from any electric or magnetic disturbance.

The UCC37323D drivers are capable of a wide range of operational frequencies, reaching up to 1MHz. This allows for a variety of applications, especially where high frequencies are necessary for high-current efficiency. In addition, the drivers feature a maximum noise immunity of 8-kVHBM on the control input. This ensures that the driver performs reliably even in electrically noisy environments.

The UCC37323D drivers also feature a split-gate topology, which reduces shoot-through current and increases robustness. This feature helps prevent overcurrents, which can occur when the current circuits in the device malfunction. Additionally, the device is also designed to provide a logic enable/disable function to allow for dynamic control of the device. Furthermore, the UCC37323D features a built-in soft-start circuit to reduce the surge current that is drawn initially. This reduces the stress on the power supply, helping increase the overall system efficiency.

Conclusion

UCC37323D PMIC gate drivers are designed for maximum power management efficiency and performance. They feature a variety of advantageous features such as a wide voltage range, high current capabilities, low propagation delay, low EMI, robust ESD protection, and a logic enable/disable function. These features make the UCC37323D gate driver ideal for applications such as servers, converters, UPS, and telecom systems.

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