UCC2581DTRG4

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The UCC2581DTRG4 is a DC-DC switching controller designed for harsh operating conditions provided by Texas Instruments. This device is one of the many DC-DC switch controllers part of the Texas Instruments’ PMIC line of products and is part of the voltage regulators family, aimed at providing power solutions to demanding applications.

This switch controller integrates many functional blocks, such as a high-performance Pulse Width Modulation (PWM) control circuit, an adjustable pre-biased phase-shift oscillator, an I2C interface and an over-temperature shutdown circuit. These functional blocks are designed to provide solutions for applications in extreme environments that use robust power supplies with higher power density, higher efficiency and improved thermal performance.

UCC2581DTRG4 can be applied to a variety of applications, including smart phone power supplies, car instrument panels, automotive mainstream infotainment systems, workplace computers, notebook computers and industrial power supplies. This device offers the advantages of maximum duty cycle of 100%, maximum duty cycle duty rate of 50%, low standby power, adjustable output voltage range of 0.8V to 13V, adjustable output current limit of up to 12A, and 100MHz maximum operating frequency.

The device’s PWM control circuit is designed to provide a smooth and synchronous output, with protection from overcurrent, overvoltage and short circuit faults. Its high operating frequency provides a low switching noise, reduced EMI and higher efficiency of power conversion, which is suitable for both AC/DC and DC/DC applications.

The adjustable pre-biased phase-shift oscillator provides excellent PWM operation, fast transient response time and enhanced noise immunity for low-noise applications. It also allows for fine-tune current limit and output voltage, using parameters such as operating frequency, peak current limit and voltage setting.

In addition, the dual status flag pins enable efficient checking of the system’s health, such as undervoltage lockout, overcurrent protect, output voltage protection and controller status. The I2C interface and over-temperature shutdown circuit also provide improved system performance and reliability.

UCC2581DTRG4 requires an evaluated reference voltage with an optional 10µA current source and a soft-start capacitor with a minimum soft-start time of 8ms. The device also features Thermal Protection, Over Output Protect and Input Over Voltage Protection for enhanced safety and reliability. This device is housed in WSpin or DPAK package, making it compatible with both through-hole and surface-mount applications.

UCC2581DTRG4 is a versatile DC-DC switching controller that offers many advantages for applications in extreme environments. Through its advanced features such as PWM control, adjustable pre-biased phase-shift oscillator, dual status flag pins and I2C interface, the device provides robust power solutions in harsh operating conditions with higher power density, higher efficiency and improved thermal performance.

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