UCC3895DWTR

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UCC3895DWTR

IC OFFLINE SW FULL-BRDG 20SOIC

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規格

Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
OutputType PWM
OutputConfiguration Positive
Topology Phase-Shifted Full-Bridge
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 10V ~ 16.5V
Frequency-Switching 1MHz
DutyCycle(Max) 100%
ClockSync Yes
ControlFeatures Frequency Control, Soft Start, Sync
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 20-SOIC (0.295, 7.50mm Width)

概述

Description

The UCC3895DWTR is a phase-shifted PWM (Pulse Width Modulation) controller from Texas Instruments, designed for high-efficiency DC-DC power supply applications. It is particularly suitable for full-bridge power converters, where it provides precise control over the phase shifts between the power switches to optimize efficiency and performance.
Key features include adaptive delay set controls, which minimize the body diode conduction losses in the power switches, and a wide input voltage range for flexibility in different applications. The controller also incorporates protection features such as overcurrent protection and soft-start capability to prevent inrush currents during start-up.
The UCC3895DWTR typically comes in a 16-pin SOIC package, denoted by the "DW" in its part number, and the "TR" suffix indicates that it is shipped in a tape and reel format, suitable for automated assembly processes.
This controller is widely used in applications such as telecom power systems, server power supplies, and industrial power converters, where reliable and efficient power conversion is critical.

Features

The UCC3895DWTR is a synchronous PWM (Pulse Width Modulation) controller designed for managing high-efficiency power conversion in full-bridge topologies. Key features include:
1. Phase-Shifted PWM Control: It minimizes switching losses by providing precise control over the timing of the power MOSFETs in the bridge.
2. Programmable Dead Time: Allows for customization of dead time to optimize efficiency and reduce switching losses.
3. Adaptive Delays: It compensates for varying load and input voltage conditions, enhancing performance and efficiency.
4. Current-Mode Control: Provides fast transient response and inherent overcurrent protection.
5. Soft Start Capability: This feature helps to limit inrush current during startup.
6. Synchronization Capability: It can synchronize with an external clock, making it suitable for parallel operation.
7. Fault Protection: Includes features such as undervoltage lockout (UVLO) and overcurrent protection to ensure robust operation.
8. Temperature Compensation: Ensures stable operation across a wide range of temperatures.
The UCC3895DWTR is typically used in applications requiring high efficiency and precise control, such as in telecom and server power supplies. Its features are tailored to optimize performance in complex power systems.

Package

The UCC3895DWTR is a Texas Instruments PWM controller IC commonly used in power supply designs. Its package type is a 20-pin SOIC (Small Outline Integrated Circuit) with a TSSOP (Thin-Shrink Small Outline Package) form factor. The "DW" refers to the SOIC package, while the "TR" indicates that it is supplied in tape and reel packaging for automated assembly processes.

Pinout

The UCC3895DWTR is a phase-shifted PWM controller IC used primarily for power supply applications. It is typically housed in a 20-pin SOIC (Small Outline Integrated Circuit) package. The key functions of the UCC3895DWTR include managing phase-shifted full-bridge power converters, ensuring zero-voltage switching (ZVS), and controlling power MOSFETs in a power supply system.
The main features include:
1. Phase-Shifted PWM Control: Enables efficient power conversion by controlling the timing of switches.
2. Zero-Voltage Switching (ZVS): Reduces switching losses and electromagnetic interference (EMI).
3. Programmable Dead Time: Allows for fine-tuning the delay between switching transitions.
4. Synchronizable Oscillator: Facilitates synchronization with external systems.
5. Adjustable Soft Start: Helps in reducing inrush current during startup.
6. Protection Features: Includes overcurrent protection and under-voltage lockout to enhance system reliability.
Each pin usually serves a specific purpose, including inputs for feedback, outputs for driving MOSFETs, and other support functions like synchronization and protection. For detailed pin configurations, it is best to refer to the manufacturer's datasheet.

Manufacturer

The UCC3895DWTR is a product manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and systems. They are well-known for their analog and embedded processing products, which serve a variety of industries such as consumer electronics, automotive, industrial, and communications equipment.

Application

The UCC3895DWTR is primarily used in applications requiring high-performance, phase-shifted full-bridge PWM power conversion systems. It is suitable for high-efficiency DC-DC converters, uninterruptible power supplies (UPS), telecom power systems, and distributed power architectures. Its features, such as adaptive delay set, programmable switching frequency, and synchronous rectification control, make it ideal for enhancing efficiency and performance in these applications.

Equivalent

The UCC3895DWTR is a Phase-Shifted Full-Bridge PWM Controller by Texas Instruments. Equivalent products from other manufacturers include the LM5035 from Texas Instruments, the UC3875 and NCP1568 from ON Semiconductor, and the LTC3722 from Analog Devices. These alternatives offer similar phase-shifted PWM control features but check datasheets for detailed differences.

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