UCC28084D

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The UCC28084D integrated circuit is a high-precision integrated device that is designed to switch DC/DC converters. It is a member of the Voltage Regulators family, within the broad Power Management IC (PMIC) category. It offers a host of features to enhance system performance and protection, such as a maximum duty cycle of 100% and integrated short-circuit and overtemperature protections. This device is ideal for applications such as point-of-load (POL) systems and high-current, high-voltage DC/DC converters.

The UCC28084D is built on the company\'s triple-channel, high-side, low-side, and synchronous MOSFET drivers. An integrated high-speed digital Demultiplexer allows for easy implementation of deadtime control, and the thermal and short-circuit protection features offer complete overcurrent and overtemperature protection. The device is suitable for driving both floating and grounded sources, and it can be used in both synchronous and non-synchronous mode.

The UCC28084D features an open-loop gain of 120 dB, a high-side current sink drive of ±125 mA, and a low-side current source drive of ±400 mA. It also has a fast switching frequency of 25 MHz, programmable deadtime of 1 to 8 μs, and a highly regulated output voltage range of 0 to ±8 V. Additionally, the device comes with an integrated bootstrap diode to provide power to the high-side gates, and a temperature range of -40 to +85°C.

The UCC28084D is designed for use in high-power and precision digital-controlled DC/DC converters. These converters are typically used for powering high-end microprocessors, FPGAs, DSPs, and ASICs, as well as other high-power, high-efficiency applications. The device works by providing an input regulated voltage from the DC/DC converter, which is then regulated and translated into a new voltage. The input voltage is regulated by the device\'s internal error amplifier and its internal voltage reference. This regulated voltage is then used to drive the MOSFET switches, which allow current to pass through the output inductor. This, in turn, generates the desired output voltage.

In addition to its DC/DC converter applications, the UCC28084D can also be used in motor control systems, motor drive systems, and injection-molded motor control systems. In these applications, it can provide the necessary voltage to drive the motor and its control board. The device also features built-in overload protection and soft start circuitry to help protect the motor and system effectively.

The UCC28084D is an ideal solution for high-power, precision digital-controlled DC/DC converters. Its robust feature set, wide range of applications, and high level of integration make it a great choice for power management systems. With an integrated digital Demultiplexer, fast switching frequency, programmable dead time, and low-side current source drive, it is an excellent choice for a variety of demanding applications.

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