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UCC28C45DR
Current Mode PWM ControllerUCC28C45DR
Current Mode PWM Controller
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Manufacturer Part # : UCC28C45DR
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Package/Case: SOIC-8
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Brand: Texas Instruments
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Product Categories : DC DC Switching Controllers
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Service & Packaging
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UCC28C45DR DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The UCC28C45DR is a top-of-the-line current mode PWM controller that stands out in the world of power supply applications. Offering superior performance and versatility, this device operates flawlessly with an input voltage range of 9V to 30V, catering to various power supply requirements with ease. Its precision internal oscillator ensures optimum frequency accuracy and stability, leading to efficient power conversion that you can rely on. Not only does this controller prioritize functionality, but it also takes system reliability seriously. With a programmable soft-start function, you can initiate controlled startup sequences, minimizing overshoot and enhancing the overall reliability of your system
Key Features
- High-performance computing achieved
- Data integrity preserved through error detection
- Precise timing ensured through synchronization
- Fault tolerance enabled with redundancy
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Topology | Boost, Buck, Flyback, Forward, SEPIC | Control mode | Current |
| Duty cycle (max) (%) | 50 | Switching frequency (max) (kHz) | 1000 |
| Features | Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology, Programmable max duty cycle | UVLO thresholds on/off (V) | 8.4/7.6 |
| Operating temperature range (°C) | -40 to 125 | Rating | Catalog |
| Gate drive (typ) (A) | 1 | Vin (max) (V) | 18 |
Specification Comparison
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is UCC28C45DR?
The UCC28C45DR is a high-performance, voltage-mode PWM controller IC designed by Texas Instruments. It is commonly used in power supply applications for controlling the output voltage regulation, current limiting, and protection functions.
How Does UCC28C45DR Work?
The UCC28C45DR operates by comparing a feedback voltage from the power supply output with a reference voltage to generate an error signal. This error signal is then used to adjust the duty cycle of the PWM signal driving the power supply circuit, thereby regulating the output voltage. The IC also includes features for soft-start, overcurrent protection, and fault detection.
How Many Pins does UCC28C45DR have and What are the Functions of the Pinout Configuration?
The UCC28C45DR is housed in an 8-pin SOIC package. The pinout configuration includes:
- VCC: Power supply pin for the IC.
- COMP: Compensation pin for loop stability.
- RT/CT: Pin for setting the oscillator frequency and soft-start time.
- REF: Reference voltage pin.
- FB: Feedback input for regulating the output voltage.
- CS: Current sense input for overcurrent protection.
- OUT: PWM output pin.
- GND: Ground pin.
What are the Pros and Cons of UCC28C45DR?
Pros:
- High Performance: Provides precise voltage regulation and protection features.
- Wide Operating Voltage Range: Suitable for various power supply designs.
- Compact Package: The 8-pin SOIC package offers space efficiency.
- Overcurrent Protection: Includes features for current limiting and fault detection.
Cons:
- External Components: May require additional components for specific applications.
- Complexity: Requires understanding of power supply design principles for optimal performance.
Are There Any Equivalents/Alternatives to UCC28C45DR for Recommendation?
- The UCC28051 from Texas Instruments is a similar PWM controller with enhanced features.
- Alternatives to the UCC28C45DR include the UC3843 from Texas Instruments and the SG3525 from STMicroelectronics.
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