UCC27527DSDT

PMIC - Gate Drivers

This article will introduce and explain the application field and working principle of the UCC27527DSDT.

Overview

The UCC27527DSDT is a monolithic dual power MOSFET driver designed for high-power applications. It is designed to drive two booster configured power MOSFET half-bridges simultaneously, providing significant performance benefits for a wide range of applications. The UCC27527DSDT is ideal for high-power system start-up, modulation and for supplying inrush current pulses up to 400 Amps.

Key Features

• Low Startup Voltage
• Low Quiescent Current
• Low Peak Current
• High Output Current
• Soft Start

Application Fields and Working Principles

The UCC27527DSDT is mainly used in power management applications such as automotive motor drives and power supplies. It can also be used in high-power switching applications, including high-power DC-DC converters, multi-output power supplies and motor speed control.

The UCC27527DSDT works by providing high-current output signals that drive two power MOSFETs of the same type in a half-bridge configuration. The driver employs a low-voltage start-up technique for efficient and reliable operation. When the voltage supply is first applied to the driver, the current is limited until a certain level is reached. Once the current reaches this level, the output signals are activated and the MOSFETs are driven.

The UCC27527DSDT also provides protection features such as an over-temperature switch-off and a current-limit feature. The device also has an internal pre-drive delay for controlling the timing of the switch-on. This ensures that the boost capacitor charges fully before the power MOSFETs are turned on, thus avoiding inrush current events.

Advantages

The UCC27527DSDT offers various benefits, including:

• Fast transient response
• Low quiescent current
• High output current
• Negligible overshoot
• Soft-start capability

Conclusion

The UCC27527DSDT driver is an ideal solution for a wide range of power management applications, particularly those where high-power switching and current pulses are required. Through a combination of efficient operation, high current output, and a host of protective features, the UCC27527DSDT provides an exceptionally reliable power solution.