UCC27323DRG4

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The UCC27323DRG4 is a monolithic gate driver integrated circuit (IC) designed for driving a power gate switch. It is part of Texas Instruments Power Management and System Solutions portfolio and is included in the Gate Drivers section of its PMIC (Power Management Integrated Circuit) series. This gate driver is designed to guarantee a high level of performance while offering low-side gate driving capabilities, an extended operating temperature range, and small packages with exposed pads.

Features

• High-side and low-side gate drive output.
• Hysteretic drive capability.
• Programmable overcurrent protection.
• Programmable shoot-through protection.
• Pre-biased start-up.
• Output voltage range up to ±15V.
• Operating temperature range from -40°C to +85°C.
• Small packages available with exposed pads.

Applications

The UCC27323DRG4 is suitable for a wide range of applications, including automotive, industrial, consumer, and medical equipment. It can be used to power synchronized and non-synchronized switches, providing cost-effective solutions for low voltage, low current, and high current applications. The UCC27323DRG4 is especially suitable for use in applications requiring high-side and/or low-side gate drive capabilities, such as:

• DC-DC converters.
• Power over Ethernet.
• Power supplies.
• Motor control systems.
• Battery chargers.

Working Principle

The UCC27323DRG4 monolithic gate driver is designed to provide efficient, low-cost gate driving for both high-side and low-side power MOSFETs and IGBTs. It has two independent gate drive pairs; one for the high side and one for the low side. The drive pairs are protected by pre-biased start-up and programmable overcurrent protection. The gate driver is also capable of hysteretic drive, which helps reduce the switching losses associated with the MOSFETs and IGBTs.

The UCC27323DRG4 works by controlling the current through the gates of the MOSFETs or IGBTs. When the enable input is high, the UCC27323DRG4 will turn on the power switch, activating the circuit. The current that passes through the gates can be adjusted using the slew rate control inputs. The slew rate controls the rate at which the voltage at the gates is increased or decreased, allowing the user to adjust the switching speed to increase efficiency and reduce noise.

The UCC27323DRG4 provides protection against shoot-through current and overcurrent events. The shoot-through protection prevents current from flowing through both channels at the same time, reducing the risk of damage to the MOSFETs or IGBTs. The overcurrent protection limits the amount of current that passes through the gates, further protecting them from damage due to high currents. The UCC27323DRG4 also has an adjustable dead time, which helps to further prevent shoot-through current and reduce electromagnetic interference (EMI).

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