Voir les spécifications pour les détails du produit.
UCC3975PWG4
Product Overview
- Category: Integrated Circuit (IC)
- Use: Power Management
- Characteristics: High-performance synchronous buck controller
- Package: PowerPAD HTSSOP-20
- Essence: Efficient power conversion and management
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Input Voltage Range: 4.5V to 60V
- Output Voltage Range: 0.8V to 55V
- Switching Frequency: Up to 1MHz
- Operating Temperature Range: -40°C to +125°C
- Features: Adjustable output voltage, adjustable soft-start, overcurrent protection, thermal shutdown, synchronization capability
Detailed Pin Configuration
The UCC3975PWG4 has a total of 20 pins. The pin configuration is as follows:
- VIN: Input voltage pin
- VSENSE: Current sense input pin
- COMP: Compensation pin for loop stability
- FB: Feedback pin for output voltage regulation
- SS/TR: Soft-start/Tracking pin
- SYNC: Synchronization input pin
- GND: Ground pin
- PGND: Power ground pin
- AGND: Analog ground pin
- EN: Enable pin
- RT/CT: Timing resistor/capacitor selection pin
- BOOT: Bootstrap capacitor connection pin
- SW: Switch node pin
- LX: Inductor connection pin
- BST: Boost capacitor connection pin
- VREF: Reference voltage output pin
- VCC: Supply voltage input pin
- NC: No connect pin
- NC: No connect pin
- NC: No connect pin
Functional Features
- Adjustable Output Voltage: The UCC3975PWG4 allows the user to adjust the output voltage according to their requirements.
- Adjustable Soft-Start: The soft-start feature enables a controlled and gradual increase in the output voltage during startup, reducing stress on the system components.
- Overcurrent Protection: The IC incorporates overcurrent protection to safeguard against excessive current flow, preventing damage to the circuit.
- Thermal Shutdown: In case of excessive temperature rise, the thermal shutdown feature activates, protecting the IC from overheating.
- Synchronization Capability: The synchronization input allows for synchronization with an external clock source, enabling precise timing control.
Advantages and Disadvantages
Advantages: - Wide input voltage range - High switching frequency capability - Adjustable output voltage and soft-start - Overcurrent protection and thermal shutdown features ensure system safety - Synchronization capability for precise timing control
Disadvantages: - Limited number of pins for additional functionalities - Requires external components for complete power management solution
Working Principles
The UCC3975PWG4 is a high-performance synchronous buck controller. It operates by converting a higher input voltage to a lower output voltage efficiently. The controller uses pulse-width modulation (PWM) techniques to regulate the output voltage. By adjusting the duty cycle of the PWM signal, the desired output voltage can be achieved. The feedback mechanism continuously monitors the output voltage and adjusts the duty cycle accordingly to maintain a stable output.
Detailed Application Field Plans
The UCC3975PWG4 finds applications in various fields, including:
- Power supplies for industrial equipment
- Automotive electronics
- Telecommunications infrastructure
- Renewable energy systems
- Consumer electronics
Detailed and Complete Alternative Models
- LM2596SX-ADJ: Adjustable Buck Converter IC
- TPS54332DDAR: Synchronous Step-Down Converter IC
- LT8610EMSE#PBF: High-Efficiency Synchronous Buck Converter IC
- MAX15062ATB+T: Integrated Power Management IC
- MP2307DN-LF-Z: DC-DC Buck Converter IC
These alternative models offer similar functionalities and can be considered as alternatives to the UCC3975PWG4.
Word count: 511 words
Énumérez 10 questions et réponses courantes liées à l'application de UCC3975PWG4 dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of UCC3975PWG4 in technical solutions:
Q: What is UCC3975PWG4? A: UCC3975PWG4 is a voltage mode PWM controller IC used for regulating power supplies.
Q: What are the key features of UCC3975PWG4? A: Some key features include adjustable frequency, soft-start capability, current limiting, and overvoltage protection.
Q: What is the typical input voltage range for UCC3975PWG4? A: The typical input voltage range is between 8V and 16V.
Q: How does UCC3975PWG4 regulate the output voltage? A: UCC3975PWG4 uses a feedback loop to compare the output voltage with a reference voltage and adjusts the duty cycle of the PWM signal accordingly.
Q: Can UCC3975PWG4 be used in both step-up and step-down applications? A: Yes, UCC3975PWG4 can be used in both step-up (boost) and step-down (buck) applications.
Q: What is the maximum switching frequency supported by UCC3975PWG4? A: The maximum switching frequency supported is typically around 500kHz.
Q: Does UCC3975PWG4 have built-in protection features? A: Yes, UCC3975PWG4 has built-in protection features such as overcurrent protection and thermal shutdown.
Q: Can UCC3975PWG4 operate in a wide temperature range? A: Yes, UCC3975PWG4 can operate in a temperature range of -40°C to 125°C.
Q: What is the maximum output current that UCC3975PWG4 can handle? A: The maximum output current depends on the external components used, but it can typically handle currents up to a few amps.
Q: Are there any application notes or reference designs available for UCC3975PWG4? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing UCC3975PWG4 in various technical solutions.
Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios. It is always recommended to refer to the datasheet and relevant documentation for accurate information.