UCC2894DRG4 - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High-performance synchronous rectifier controller - Designed for use in switch-mode power supplies - Provides high efficiency and low power dissipation

Package: SOIC-16

Essence: The UCC2894DRG4 is a highly efficient synchronous rectifier controller that is commonly used in switch-mode power supplies. It offers improved performance, reduced power dissipation, and increased overall efficiency.

Packaging/Quantity: The UCC2894DRG4 is typically sold in reels or tubes containing 250 units per package.

Specifications

Input Voltage Range: 3V to 20V
Output Voltage Range: 0V to VCC
Operating Temperature Range: -40°C to 125°C
Maximum Duty Cycle: 100%
Switching Frequency Range: 50kHz to 1MHz
Output Current: Up to 10A

Detailed Pin Configuration

The UCC2894DRG4 has a total of 16 pins arranged as follows:

VIN: Input voltage pin
GND: Ground pin
COMP: Compensation pin
FB: Feedback pin
CS: Current sense pin
SS/TR: Soft-start/Tracking pin
RT/CT: Timing resistor/capacitor pin
VREF: Reference voltage pin
VCC: Supply voltage pin
SYNC: Synchronization pin
DRVH: High-side driver output pin
DRVL: Low-side driver output pin
BOOT: Bootstrap capacitor pin
HO: High-side MOSFET gate drive pin
LO: Low-side MOSFET gate drive pin
NC: No connection pin

Functional Features

High-performance synchronous rectifier control
Adaptive dead-time control for improved efficiency
Programmable soft-start and tracking functions
Overcurrent protection with adjustable threshold
Undervoltage lockout (UVLO) protection
Synchronization capability for multi-phase operation

Advantages and Disadvantages

Advantages: - Improved power efficiency - Reduced power dissipation - Enhanced overall performance - Wide input voltage range - Adjustable features for customization

Disadvantages: - Limited output current capacity (up to 10A) - Requires external components for complete functionality - Relatively high cost compared to non-synchronous rectifier controllers

Working Principles

The UCC2894DRG4 operates by controlling the switching of synchronous rectifiers in a switch-mode power supply. It utilizes adaptive dead-time control, which optimizes the timing between the high-side and low-side MOSFETs to minimize power losses. The controller also incorporates various protection features such as overcurrent protection and undervoltage lockout to ensure safe and reliable operation.

Detailed Application Field Plans

The UCC2894DRG4 is widely used in various applications that require efficient power management, including: - DC-DC converters - AC-DC converters - LED lighting systems - Telecom power supplies - Industrial power supplies

Detailed and Complete Alternative Models

Some alternative models to the UCC2894DRG4 that offer similar functionality include: - UCC2895DRG4 - UCC2896DRG4 - UCC2897DRG4 - UCC2898DRG4

These alternative models provide comparable features and can be considered as substitutes depending on specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací UCC2894DRG4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of UCC2894DRG4 in technical solutions:

Q: What is UCC2894DRG4? A: UCC2894DRG4 is a high-performance, synchronous rectifier controller IC used in power supply applications.
Q: What are the key features of UCC2894DRG4? A: Some key features include high efficiency, low standby power consumption, adjustable dead-time control, and protection features like overcurrent and overvoltage protection.
Q: How does UCC2894DRG4 improve power supply efficiency? A: UCC2894DRG4 utilizes synchronous rectification, which reduces power losses compared to traditional diode rectification, resulting in higher overall efficiency.
Q: Can UCC2894DRG4 be used in both buck and boost converter topologies? A: Yes, UCC2894DRG4 can be used in both buck and boost converter topologies, making it versatile for various power supply designs.
Q: What is dead-time control, and why is it important? A: Dead-time control refers to the time delay between turning off one switch and turning on the other in a synchronous rectifier configuration. It is important to prevent shoot-through current and maximize efficiency.
Q: Does UCC2894DRG4 have any built-in protection features? A: Yes, UCC2894DRG4 has built-in protection features such as overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown.
Q: Can UCC2894DRG4 operate at high switching frequencies? A: Yes, UCC2894DRG4 is designed to operate at high switching frequencies, making it suitable for applications that require fast response and compact designs.
Q: What is the maximum input voltage range supported by UCC2894DRG4? A: The maximum input voltage range supported by UCC2894DRG4 is typically up to 100V.
Q: Can UCC2894DRG4 be used in automotive applications? A: Yes, UCC2894DRG4 is qualified for automotive applications and can be used in various automotive power supply designs.
Q: Are there any evaluation boards or reference designs available for UCC2894DRG4? A: Yes, Texas Instruments provides evaluation boards and reference designs for UCC2894DRG4, which can help users quickly prototype and implement their power supply solutions.

Please note that the answers provided here are general and may vary depending on specific application requirements and datasheet specifications.