UCC3888N - English Editing Encyclopedia Entry

Product Overview

Use

This IC is commonly used in power management applications.

Characteristics

UCC3888N is a high-performance voltage mode 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 provides protection features such as overvoltage, undervoltage, and overcurrent protection.
UCC3888N has a low startup current, enabling efficient power management.

Package and Quantity

The UCC3888N IC is available in a standard 16-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a quantity of 250 units.

Specifications

Input Voltage Range: 4.5V to 75V
Output Voltage Range: 0.8V to 60V
Operating Temperature Range: -40°C to 85°C
Switching Frequency: Adjustable up to 1MHz
Maximum Duty Cycle: 90%
Quiescent Current: 2.5mA

Pin Configuration

The UCC3888N IC has the following pin configuration:

Pin 1: VFB - Feedback Voltage Input Pin 2: COMP - Compensation Node Pin 3: CS - Current Sense Input Pin 4: GND - Ground Pin 5: RT/CT - Timing Components Connection Pin 6: SS/TR - Soft Start/Tracking Control Pin 7: VCC - Supply Voltage Input Pin 8: DRVH - High-Side Gate Drive Output Pin 9: DRVL - Low-Side Gate Drive Output Pin 10: SYNC - Synchronization Input Pin 11: FB/SD - Feedback/Sleep Mode Control Pin 12: VSENSE - Voltage Sense Input Pin 13: UVLO - Undervoltage Lockout Input Pin 14: OVLO - Overvoltage Lockout Input Pin 15: EN/UV - Enable/Undervoltage Lockout Output Pin 16: VIN - Input Voltage

Functional Features

Voltage mode PWM control for precise regulation.
Adjustable switching frequency for optimization.
Soft start and tracking control for smooth startup.
Comprehensive protection features ensure system reliability.
High-side and low-side gate drive outputs for efficient power delivery.
Synchronization input for multi-phase operation.

Advantages and Disadvantages

Advantages

Wide input voltage range allows versatile applications.
Excellent line and load regulation for stable output voltages.
Protection features enhance system safety and reliability.
Low startup current enables efficient power management.

Disadvantages

Limited maximum duty cycle may restrict certain applications.
Requires external timing components for operation.

Working Principles

The UCC3888N operates on the principle of voltage mode pulse-width modulation (PWM) control. It compares the feedback voltage with a reference voltage to generate an error signal, which is then used to adjust the duty cycle of the PWM waveform. By regulating the duty cycle, the IC controls the output voltage to maintain it at the desired level. The soft start feature gradually ramps up the output voltage during startup, preventing excessive inrush current. The various protection features ensure the system remains safe under abnormal operating conditions.

Application Field Plans

The UCC3888N IC finds extensive use in various power management applications, including: - DC-DC converters - Power supplies - Battery charging systems - LED drivers - Industrial automation equipment

Alternative Models

For those seeking alternatives to the UCC3888N, the following ICs offer similar functionality: - LM5117 - LT3845 - TPS54332

These alternative models can be considered based on specific application requirements and availability.

In conclusion, the UCC3888N is a high-performance voltage mode PWM controller widely used in power management applications. Its excellent regulation, protection features, and wide input voltage range make it suitable for diverse design requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av UCC3888N i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of UCC3888N in technical solutions:

Q: What is UCC3888N? A: UCC3888N is a high-performance synchronous buck controller IC used for voltage regulation in power supply applications.
Q: What is the input voltage range supported by UCC3888N? A: UCC3888N supports an input voltage range from 4.5V to 60V.
Q: What is the output voltage range that can be achieved using UCC3888N? A: The output voltage range achievable with UCC3888N is typically from 0.6V to 55V.
Q: Can UCC3888N handle high current loads? A: Yes, UCC3888N is designed to handle high current loads with its integrated MOSFET drivers and external MOSFETs.
Q: What is the maximum switching frequency supported by UCC3888N? A: UCC3888N supports a maximum switching frequency of up to 2MHz.
Q: Does UCC3888N have any protection features? A: Yes, UCC3888N includes various protection features such as overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown.
Q: Can UCC3888N operate in a wide temperature range? A: Yes, UCC3888N is designed to operate in a wide temperature range, typically from -40°C to 125°C.
Q: Is UCC3888N suitable for battery-powered applications? A: Yes, UCC3888N is suitable for battery-powered applications due to its low quiescent current and high efficiency.
Q: Can UCC3888N be used in both step-up and step-down voltage regulation applications? A: No, UCC3888N is specifically designed for step-down (buck) voltage regulation applications.
Q: What are the typical applications of UCC3888N? A: UCC3888N is commonly used in various power supply applications such as telecom equipment, industrial automation, and automotive electronics.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios.