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UCC3895N
Product Overview
Category
UCC3895N belongs to the category of integrated circuits (ICs) specifically designed for power management applications.
Use
This IC is commonly used in power supply systems to regulate and control the flow of electrical energy.
Characteristics
- UCC3895N is a high-performance voltage mode pulse width modulation (PWM) controller.
- It operates at a wide input voltage range, making it suitable for various power supply designs.
- The IC offers excellent line and load regulation, ensuring stable output voltages.
- It incorporates protection features such as overvoltage and overcurrent protection, enhancing system reliability.
Package
UCC3895N is available in a standard 16-pin dual in-line package (DIP), which facilitates easy integration into circuit boards.
Essence
The essence of UCC3895N lies in its ability to efficiently regulate and control power supply systems, ensuring stable and reliable operation.
Packaging/Quantity
UCC3895N is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.
Specifications
- Input Voltage Range: 10V - 30V
- Output Voltage Range: 0V - 5V
- Maximum Output Current: 2A
- Operating Temperature Range: -40°C to 85°C
- Switching Frequency: 200kHz - 1MHz
Detailed Pin Configuration
- VCC: Power supply input
- GND: Ground reference
- COMP: Compensation pin for feedback loop
- RT/CT: Timing components connection
- CT: Timing capacitor connection
- RT: Timing resistor connection
- OSC: Oscillator timing capacitor connection
- SYNC: Synchronization input
- SS/TR: Soft-start and tracking control
- FB: Feedback voltage input
- INV: Inverting input for error amplifier
- VREF: Reference voltage output
- CS: Current sense input
- DRVH: High-side gate driver output
- DRVL: Low-side gate driver output
- VDD: Power supply input for gate drivers
Functional Features
- Voltage mode PWM control for precise regulation
- Adjustable soft-start and tracking control for smooth power-up
- Overvoltage protection to prevent damage to the system
- Overcurrent protection for enhanced safety
- Synchronization input for multi-phase operation
- Error amplifier with high gain for accurate feedback control
Advantages and Disadvantages
Advantages
- Wide input voltage range allows for versatile applications
- Excellent line and load regulation ensure stable output voltages
- Integrated protection features enhance system reliability
- Compact DIP package facilitates easy integration into circuit boards
Disadvantages
- Limited maximum output current may restrict usage in high-power applications
- Operating temperature range may not be suitable for extreme environments
Working Principles
UCC3895N operates based on the voltage mode pulse width modulation (PWM) technique. It compares the feedback voltage from the output with a reference voltage and adjusts the duty cycle of the PWM signal accordingly. This regulates the output voltage and ensures it remains within the desired range.
The IC also incorporates various protection mechanisms such as overvoltage and overcurrent protection. These features monitor the output voltage and current, respectively, and take appropriate actions to prevent any potential damage to the system.
Detailed Application Field Plans
UCC3895N finds extensive application in various power supply systems, including but not limited to: - DC-DC converters - AC-DC converters - Uninterruptible power supplies (UPS) - Battery charging systems - LED lighting drivers
Detailed and Complete Alternative Models
- UCC3895M: Similar to UCC3895N but available in a surface mount package (SMD)
- UCC3809: Low-power version with reduced input voltage range
- UCC28019: High-power version with increased maximum output current
These alternative models offer similar functionality and can be considered as substitutes for UCC3895N depending on specific requirements.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de UCC3895N en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of UCC3895N in technical solutions:
Q: What is UCC3895N? A: UCC3895N is a high-performance pulse width modulation (PWM) controller IC used in power supply applications.
Q: What are the key features of UCC3895N? A: Some key features of UCC3895N include adjustable frequency, soft-start capability, cycle-by-cycle current limiting, and protection against overvoltage and undervoltage conditions.
Q: What is the maximum operating voltage for UCC3895N? A: The maximum operating voltage for UCC3895N is typically around 20V.
Q: Can UCC3895N be used in both buck and boost converter topologies? A: Yes, UCC3895N can be used in both buck and boost converter topologies, as well as in other power supply configurations.
Q: How does UCC3895N achieve cycle-by-cycle current limiting? A: UCC3895N achieves cycle-by-cycle current limiting by monitoring the voltage across the sense resistor in the power stage and adjusting the duty cycle accordingly.
Q: Does UCC3895N have any built-in protection features? A: Yes, UCC3895N has built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
Q: Can UCC3895N operate at high switching frequencies? A: Yes, UCC3895N is designed to operate at high switching frequencies, typically up to several hundred kilohertz.
Q: Is UCC3895N suitable for low-power applications? A: UCC3895N is primarily designed for medium to high-power applications and may not be the most suitable choice for low-power applications.
Q: What are the typical applications of UCC3895N? A: UCC3895N is commonly used in power supplies for industrial equipment, motor drives, telecom systems, and other high-power applications.
Q: Are there any evaluation boards or reference designs available for UCC3895N? A: Yes, Texas Instruments provides evaluation boards and reference designs that can help users get started with implementing UCC3895N in their applications.
Please note that these answers are general and may vary depending on specific application requirements and design considerations.