UC3875DWPTR

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UC3875DWPTR

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IC OFFLINE SW FULL-BRDG 28SOIC

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規格

屬性 價值
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputIsolation Non-Isolated
Topology Full-Bridge
Voltage-StartUp 10.75 V
Voltage-Supply(Vcc/Vdd) 9.5V ~ 20V
DutyCycle 100%
Frequency-Switching 1MHz
FaultProtection Current Limiting
ControlFeatures Frequency Control, Soft Start, Sync
OperatingTemperature 0°C ~ 70°C (TA)
Package/Case 28-SOIC (0.295, 7.50mm Width)
SupplierDevicePackage 28-SOIC

概述

Description

The UC3875DWPTR is a high-performance pulse-width modulation (PWM) controller from Texas Instruments, designed primarily for switch-mode power supply (SMPS) applications. It is part of the UC3875 series, known for its high precision and capability to handle complex power management tasks. This device offers advanced control features such as programmable maximum duty cycle, current limiting, and soft-start capabilities, which ensure efficient and reliable power conversion. The "DWPTR" suffix typically indicates a specific package type and tape-and-reel packaging for automated manufacturing processes. The UC3875DWPTR is suitable for applications requiring precise power regulation and is often used in computing, telecommunications, and industrial power systems. Its comprehensive set of features makes it ideal for demanding applications where efficiency and reliability are paramount.

Equivalent

The UC3875DWPTR is a phase-shifted full-bridge PWM controller. Equivalent or similar products include:
1. TI's UCC3895 - a phase-shifted full-bridge PWM controller.
2. LM5035 from Texas Instruments - offers integrated features for phase-shifted full-bridge topologies.
3. LTC3722 from Analog Devices - a dual-phase-shifted PWM controller.
4. NCP1562 from ON Semiconductor - a similar PWM controller for power conversion applications.
These components may vary slightly in specifications, so reviewing datasheets for compatibility is recommended.

Features

The UC3875DWPTR is a high-performance integrated circuit designed for power supply control applications. Key features include:
1. PWM Controller: It incorporates pulse-width modulation for efficient power management.
2. Synchronization: Allows for synchronized operation with multiple units or external clocks.
3. Error Amplifier: Includes a high-gain error amplifier for precise voltage regulation.
4. Soft-Start: Soft-start feature reduces inrush current during power-up.
5. Protection Features: Offers built-in protection mechanisms such as over-current protection and thermal shutdown.
6. High Frequency Operation: Capable of operating at high frequencies to support compact designs.
7. Programmable Dead Time: Allows for the adjustment of dead time to optimize performance for specific applications.
8. Low Power Consumption: Designed to minimize power usage in standby and active modes.
9. Output Control: Allows for precise control of power delivery to the load.
These features make the UC3875DWPTR suitable for use in a variety of power supply applications, including DC-DC converters and other power management systems.

Pinout

The UC3875DWPTR is a current-mode PWM controller used primarily in power supply applications. It typically comes in a 20-pin SOIC (Small Outline Integrated Circuit) package. The main functions of the UC3875DWPTR include providing accurate control of power supply systems by regulating the duty cycle of the PWM signal in response to changes in load conditions. It helps improve efficiency and performance in power conversion systems.
Key functionalities include current sensing, error amplification, and providing a precise reference voltage for system stability. The specific pin functions usually include power supply input, ground, output for PWM signal, current sense input, voltage feedback, and other ancillary functions to support its operation. Always refer to the specific datasheet for detailed pin configuration and functionalities, as variations can exist between manufacturers.

Manufacturer

The UC3875DWPTR is manufactured by Texas Instruments (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits, which are used in electronics across a wide range of applications including industrial, automotive, personal electronics, and communications equipment. TI is known for its innovation in analog and embedded processing products, contributing significantly to advancements in electronics technology.

Application

The UC3875DWPTR is a high-performance phase shift resonant controller designed for power supply applications. It is primarily used in areas requiring efficient power conversion and management, including:
1. Switch Mode Power Supplies (SMPS): For efficient DC-to-DC conversion with minimal power loss.
2. Telecommunications: Provides reliable power management for telecommunication systems.
3. Servers and Data Centers: Ensures energy-efficient power conversion in high-performance computing environments.
4. Industrial Power Systems: Suitable for controlling power in industrial equipment.
5. Consumer Electronics: Used in devices requiring efficient power management.
Its phase-shift PWM control reduces electromagnetic interference and enhances efficiency, making it suitable for applications demanding high power density and reliability.

Package

The UC3875DWPTR is a Texas Instruments integrated circuit with a package type of SOIC (Small Outline Integrated Circuit) with 20 pins. The "DWP" indicates a wide-body version of the SOIC package, while the "TR" suffix signifies that the product is supplied in tape and reel packaging for automated assembly processes.