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UCC28632DR
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Power Management
- Characteristics: High-performance, low-power, primary-side regulation (PSR) controller
- Package: SOIC-8
- Essence: Efficient power management solution for various applications
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Input Voltage Range: 4.5V to 25V
- Output Voltage Range: 3.3V to 24V
- Maximum Switching Frequency: 100 kHz to 1 MHz
- Operating Temperature Range: -40°C to +125°C
- Quiescent Current: 80 µA (typical)
Detailed Pin Configuration
The UCC28632DR IC has the following pin configuration:
- VDD: Power supply input
- GND: Ground reference
- FB: Feedback voltage input
- COMP: Compensation node for loop stability
- CS: Current sense input
- SS/EN: Soft-start or enable control
- DRAIN: Power MOSFET drain connection
- VREF: Reference voltage output
Functional Features
- Primary-side regulation (PSR) control for improved efficiency
- Adaptive on-time control for enhanced transient response
- Cycle-by-cycle peak current limit protection
- Programmable soft-start and shutdown delay
- Overvoltage and undervoltage protection
- Frequency jittering for reduced EMI emissions
Advantages and Disadvantages
Advantages: - High-performance power management solution - Efficient primary-side regulation - Enhanced transient response - Comprehensive protection features - Reduced EMI emissions
Disadvantages: - Limited input voltage range (4.5V to 25V) - Relatively low maximum switching frequency (100 kHz to 1 MHz)
Working Principles
The UCC28632DR is a primary-side regulation (PSR) controller that operates by sensing the output voltage through the feedback pin (FB). It uses an adaptive on-time control scheme to regulate the output voltage accurately. The device continuously adjusts the on-time of the power MOSFET switch based on the load conditions, ensuring efficient power transfer.
The IC incorporates cycle-by-cycle peak current limit protection, preventing excessive current flow and enhancing system reliability. It also features programmable soft-start and shutdown delay functions, allowing controlled startup and shutdown sequences.
To reduce electromagnetic interference (EMI) emissions, the UCC28632DR utilizes frequency jittering techniques, which spread the switching frequency spectrum and minimize the impact on nearby sensitive components.
Detailed Application Field Plans
The UCC28632DR is suitable for various power management applications, including but not limited to: - AC/DC power supplies - LED lighting systems - Industrial controls - Consumer electronics - Telecommunications equipment
Its primary-side regulation capability, combined with comprehensive protection features, makes it an ideal choice for applications where efficiency, reliability, and compact design are crucial.
Detailed and Complete Alternative Models
Some alternative models to the UCC28632DR include: - UCC28630DR: Similar PSR controller with a different package (SOIC-8) - UCC28631DR: PSR controller with extended input voltage range (4.5V to 42V) - UCC28633DR: PSR controller with higher maximum switching frequency (100 kHz to 2 MHz) - UCC28634DR: PSR controller with additional features such as adjustable line under-voltage lockout (UVLO)
These alternative models provide flexibility in selecting the most suitable PSR controller based on specific application requirements.
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Καταγράψτε 10 συνήθεις ερωτήσεις και απαντήσεις που σχετίζονται με την εφαρμογή του UCC28632DR σε τεχνικές λύσεις
Sure! Here are 10 common questions and answers related to the application of UCC28632DR in technical solutions:
Q: What is UCC28632DR? A: UCC28632DR is a high-performance, synchronous flyback controller IC used in power supply applications.
Q: What is the input voltage range supported by UCC28632DR? A: UCC28632DR supports an input voltage range from 4.5V to 30V.
Q: What is the maximum output power that can be achieved using UCC28632DR? A: UCC28632DR can support output powers up to 100W.
Q: Can UCC28632DR operate in continuous conduction mode (CCM)? A: Yes, UCC28632DR can operate in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM).
Q: What is the frequency range of operation for UCC28632DR? A: UCC28632DR operates at a fixed frequency of 100 kHz.
Q: Does UCC28632DR have built-in protection features? A: Yes, UCC28632DR has various built-in protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.
Q: Can UCC28632DR be used in offline power supplies? A: Yes, UCC28632DR is suitable for offline power supplies as it supports wide input voltage range and provides excellent line and load regulation.
Q: What type of feedback control does UCC28632DR use? A: UCC28632DR uses voltage-mode control for regulating the output voltage.
Q: Is UCC28632DR compatible with primary-side regulation (PSR) applications? A: Yes, UCC28632DR is designed for primary-side regulation and eliminates the need for an optocoupler.
Q: What are the typical applications of UCC28632DR? A: UCC28632DR is commonly used in power adapters, chargers, LED lighting, and other low-power applications where high efficiency and compact size are required.
Please note that these answers are general and may vary depending on specific design considerations and requirements.