Part Number: UCC28089DR

Manufacturer: Texas Instruments


Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us

Technical Specifications of UCC28089DR

Datasheet  UCC28089DR datasheet
Category Integrated Circuits (ICs)
Family PMIC – Voltage Regulators – DC DC Switching Controllers
Manufacturer Texas Instruments
Packaging Tape & Reel (TR)
Part Status Active
Output Type Transistor Driver
Function Step-Up/Step-Down
Output Configuration Positive, Isolation Capable
Topology Push-Pull
Number of Outputs 2
Output Phases 1
Voltage – Supply (Vcc/Vdd) 8.5 V ~ 14 V
Frequency – Switching Up to 1MHz
Duty Cycle (Max) 50%
Synchronous Rectifier No
Clock Sync Yes
Serial Interfaces
Control Features Dead Time Control, Frequency Control
Operating Temperature -40°C ~ 105°C (TA)
Package / Case 8-SOIC (0.154″, 3.90mm Width)
Supplier Device Package 8-SOIC


The UCC28089DR is a revolutionary BiCMOS controller for power supply systems. It seamlessly integrates into complex installations with a dual output stage for improved efficiency and fault recovery. Versatile and reliable, it’s safeguarded against under-voltage, over-current, and other hazards. The UCC28089DR sets the benchmark for the future of power management.

This article is your comprehensive guide to understanding the UCC28089DR. Explore its features, applications, and benefits to grasp how this controller transforms power supply technology. Whether you’re an enthusiast or a professional, this tutorial equips you with the knowledge to effectively harness the potential of the UCC28089DR.

Demystifying the UCC28089DR

● Dual-Alternating Push-Pull Configuration

The UCC28089DR’s revolutionary design is centered on its dual-alternating push-pull configuration. This clever configuration orchestrates two alternating output stages, resulting in a harmonic ballet of power flow. Both of these outputs are set to switch at half the frequency of the oscillator, ensuring perfect synchronization.

● Toggle Flip-Flop Mechanism

The toggle flip-flop mechanism is an important factor in achieving synchronization. The alternating action of the output stages is orchestrated by this system, allowing for a smooth transition between them. As one stage shuts down, the other comes on, resulting in a balanced and consistent power output rhythm.

● Efficiency Through Duty Cycle Management

The importance of keeping the duty cycle below 50% cannot be emphasized. This constraint guarantees that each output stage runs within an ideal range, reducing energy loss and increasing total efficiency. The UCC28089DR avoids power waste and maximizes the usefulness of the energy generated by methodically controlling the duty cycle.

In essence, the UCC28089DR’s dual-alternating push-pull design, along with the toggle flip-flop mechanism, creates a power conversion symphony. It orchestrates effective energy management by keeping the duty cycle below 50%, making every watt count in the pursuit of power supply perfection.

Unlocking Versatility: UCC28089DR in Power Supply Applications

● Primary-Side Companion Controller

The UCC28089DR thrives as a primary-side companion controller for cascaded converters with secondary-side control, rather than in traditional functions. This optimization demonstrates its versatility and intelligence, which makes it an excellent choice for complex power supply infrastructures. It streamlines coordination between several converter stages by smoothly integrating into such setups, fostering a coordinated power flow that enhances performance.

● Benefits of Complex Power Supply Setups

The interoperability of the UCC28089DR in complex power supply setups provides numerous major advantages. It reduces the burden of handling many converter stages by simplifying control topologies. This improves efficiency while simultaneously lowering the possibility of errors, resulting in a more reliable and resilient power supply system. Its capacity to thrive in various environments demonstrates its skill in handling diverse and demanding power supply requirements.

Mastering Coordination: UCC28089DR’s Dead-Time Programming

● Understanding Dead-Time Programming

Dead-time programming is essential in the field of power supply regulation. It refers to the deliberate pause between turning off one switch and turning on another. This delay prevents cross-conduction and reduces the likelihood of short circuits or energy waste, improving the system’s overall efficiency and safety.

● Enhancing Functionality and Coordination

The UCC28089DR takes dead-time programming to the next level by making it a core feature. The controller improves power flow by intelligently regulating dead time, ensuring that switches operate in harmony without generating disturbances. Because of this sophisticated coordination, the UCC28089DR improves system functionality, dependability, and safety, making it a vital asset in achieving flawless power supply performance.

In conclusion, the UCC28089DR’s primary-side companion controller role and comprehensive dead-time programming features highlight its adaptability and versatility. It sets a new standard for power supply control by effortlessly integrating into intricate setups and optimizing power flow coordination, adapting to the demands of modern power supply applications.

Enhanced Performance Fault Recovery

● Navigating Challenges: Faults in Power Supply Systems

Faults are a constant source of concern in the world of power supply systems. These errors might occur as a result of voltage variations, current surges, or transient events, disturbing the system’s smooth operation. The consequences of such disruptions might range from inefficiency and decreased performance to system shutdown. It is critical to adequately address these difficulties in order to preserve dependability and performance.

● Intelligent Scaling for Fault Recovery: UCC28089DR’s Approach

The UCC28089DR raises to the problem of fault recovery with a high-performance method based on intelligent scaling. When a fault is discovered, the controller does not just restart the system; it adapts to the situation dynamically. One of the most important things it changes is the retry and soft-start periods.

This adaption is based on the oscillator clock frequency. The UCC28089DR tailors its reaction to the system’s peculiarities by scaling retry and soft-start durations based on this frequency. This approach assures that fault recovery is not only quick but also exact. It decreases downtime, reduces the likelihood of recurring errors, and aids in maintaining stability in the face of unplanned interruptions.

In summary, the UCC28089DR’s adaptive scaling of retry and soft-start periods demonstrates its responsiveness and adaptability. It adds greatly to the robustness of power supply systems, improving reliability and limiting the impact of interruptions by treating problems with accuracy and efficiency.

Built-in Protections

In power supply applications, dependability is critical. The UCC28089DR meets this requirement by providing primary-side under-voltage and over-current protection. These built-in safeguards ensure that the system runs within safe boundaries, reducing the danger of harm caused by voltage fluctuations or high currents. This extra layer of security adds to the longevity and reliability of your power supply system.

Optimized UVLO Thresholds

The turn-on/off UVLO thresholds of 10.5 V and 8.0 V illustrate the UCC28089DR’s versatility in a wide range of operational conditions. Because of its wide range of thresholds, it is appropriate for a variety of power supply scenarios, accommodating a wide range of voltage requirements while maintaining consistent and efficient performance.


The UCC28089DR is a cutting-edge power supply controller. Its dual-alternating push-pull design, flexible programming, and powerful protections make it excellent for demanding applications. The UCC28089DR excels at optimizing cascaded converters and increasing fault resilience.

As technology evolves, it remains a reliable and efficient solution. Its versatility and protective properties place it as a crucial participant in cutting-edge power supply systems. When efficiency, versatility, and dependability are important, the UCC28089DR shines out.

Ready to experience the future of power supply? Contact ICRFQ, a leading electronic component distributor in China, to order the UCC28089DR today. Elevate your systems with this groundbreaking technology and embrace a new era of excellence.

4.8/5 - (397 votes)
Kevin Chen