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UC28025DWR
Affordable dual-purpose PWM controller
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製造商零件號 # : UC28025DWR
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包裝/封裝: SOIC (DW)-16
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製造商: Texas Instruments
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產品分類 : DC DC Switching Controllers
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UC28025DWR 數據表
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詳細說明
The UC28025DWR is a versatile DC to DC switching controller designed for use in various power supply applications. With a fast 60ns response time and a 200mA output current capability, this controller provides efficient power conversion for a wide range of electronics. Whether used in a boost, flyback, forward converter, full-bridge, half-bridge, or push-pull configuration, the UC28025DWR delivers reliable and stable performance
主要特徵
- Ultra-Low Power Consumption and Extended Battery Life
- Compact Packaging with High Integration Density
- Advanced Thermal Management and Cooling Systems
應用
- Top features and benefits
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Topology | Boost, Flyback, Forward, Full bridge, Half bridge, Push pull | Control mode | Current, Feedforward, Voltage |
| Duty cycle (max) (%) | 45 | Switching frequency (max) (kHz) | 1000 |
| Features | Adjustable switching frequency, Current limiting, Error amplifier, Multi-topology, Programmable max duty cycle, Soft start, Synchronization pin | UVLO thresholds on/off (V) | 9.2/8.4 |
| Operating temperature range (°C) | -40 to 105 | Rating | Catalog |
| Gate drive (typ) (A) | 1.5 | Vin (max) (V) | 12 |
常見問題解答
What is UC28025DWR?
The UC28025DWR is a high-performance synchronous buck controller designed by Texas Instruments. It is suitable for use in high-efficiency step-down DC-DC converter applications in various electronic devices, including servers, telecom equipment, and industrial systems.
How Does UC28025DWR Work?
The UC28025DWR works by regulating the output voltage of a DC-DC converter through a synchronous buck topology. It utilizes a control loop to monitor and adjust the output voltage based on the input supply, ensuring efficient power conversion. The controller features programmable frequency and voltage feed-forward, allowing flexibility in optimizing performance.
How Many Pins does UC28025DWR have and What are the Functions of the Pinout Configuration?
The UC28025DWR is housed in a 16-lead SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- PH, PL: High-side and low-side MOSFET gate drivers.
- RT, CT: Timing resistor and capacitor connections for frequency setting.
- SS, FB: Soft start and feedback control pins.
- COMP, VCC, AGND, PGND: Compensation, supply, analog ground, and power ground connections.
- VCNTL, VCCB: Voltage control and bias supply connections.
- DRVPO, DRVNO, SW: High-side drive positive, high-side drive negative, and switch node connections.
What are the Pros and Cons of UC28025DWR?
Pros:
- High Performance: Provides efficient and reliable control for synchronous buck converters.
- Programmable Features: Offers programmable frequency and voltage feed-forward for performance optimization.
- Protection Features: Includes overcurrent protection and thermal shutdown for enhanced system safety.
- Flexible Application: Suitable for a wide range of electronic devices requiring high-efficiency power conversion.
- Compact Package: The 16-lead SOIC package offers a space-efficient solution for compact designs.
Cons:
- External Components: May require additional external components for specific application requirements.
- Complexity: Synchronous buck converters may require careful layout consideration for optimal performance.
Are There Any Equivalents/Alternatives to UC28025DWR for Recommendation?
- The LM5117 from Texas Instruments is a similar synchronous buck controller with a different feature set.
- Alternatives to the UC28025DWR include the MAX20075 from Maxim Integrated and the TPS548A20 from Texas Instruments.
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