UCC2895DWTR

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UCC2895DWTR

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IC OFFLINE SW FULL-BRDG 20SOIC

  • Nhà sản xuấtTexas Dụng cụ

  • Ông. Phần #UCC2895DWTR

  • Gói SOIC (DW)-20

  • Có sẵn7657

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Thông số kỹ thuật

thuộc tính Giá trị
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 -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 20-SOIC (0.295, 7.50mm Width)

Tổng quan

Description

The UCC2895DWTR is a pulse width modulation (PWM) controller from Texas Instruments, primarily used in power electronics for managing power supply and conversion applications. It is designed to support both isolated and non-isolated power supply topologies, making it versatile for various applications. Key features include current mode control, which ensures stability and fast transient response, and programmable slope compensation to optimize performance in different configurations. The device operates over a wide frequency range, allowing it to be utilized in high-frequency applications, and includes features like soft start to prevent inrush currents, over-current protection to guard against short circuits, and synchronization capabilities for multi-phase designs. The UCC2895DWTR's thermal shutdown feature also ensures protection against overheating. Its compact surface-mount package type (SOIC - Small Outline Integrated Circuit) facilitates integration into PCB (Printed Circuit Board) designs, contributing to efficient space utilization. Overall, the UCC2895DWTR is suitable for implementing efficient and reliable power management solutions in industrial, telecommunications, and consumer electronics applications.

Equivalent

The UCC2895DWTR is a phase-shifted full-bridge PWM controller by Texas Instruments. Equivalent products include:
1. UCC28950 – An advanced phase-shifted full-bridge controller from Texas Instruments with improved features.
2. UC3875 – A similar PWM controller from Texas Instruments.
3. LTC3723 – A phase-shifted full-bridge controller from Analog Devices (formerly Linear Technology).
4. NCP5392 – A phase-shifted PWM controller by ON Semiconductor.
Each alternative varies slightly in terms of features and specifications, so reviewing datasheets for compatibility is recommended.

Features

The UCC2895DWTR is a phase-shifted full-bridge PWM controller designed for efficient DC-DC power conversion. Key features include:
1. Phase-Shift Control: Provides zero-voltage switching (ZVS) to minimize switching losses and improve efficiency.
2. Wide Input Voltage Range: Supports a broad range of input voltages, making it versatile for various applications.
3. Programmable Dead Time: Allows customization of the dead time between switching transitions to optimize performance.
4. Integrated Current Sense Amplifier: Facilitates current mode control for enhanced transient response and stability.
5. Synchronization Capability: Supports synchronization with an external clock for multiple controller operation.
6. Soft-Start Function: Gradually increases output to prevent inrush current during startup.
7. Overcurrent Protection: Protects the system from excessive current, ensuring reliability.
8. Adjustable Output: Offers flexibility in setting output voltage levels to meet specific application needs.
9. Compact SOIC-20 Package: Provides a space-saving solution suitable for compact designs.
These features make the UCC2895DWTR ideal for applications requiring high efficiency, reliability, and flexibility in power management.

Pinout

The UCC2895DWTR is a pulse-width modulation (PWM) controller IC designed for use in high-performance power supply applications. It is typically used to implement phase-shifted full-bridge converters among other topologies.
This IC comes in a 20-pin SOIC (DW) package. Here is a concise overview of its pin functions:
1. VREF: Reference voltage output.
2. VDD: Supply voltage input.
3. RT: Timing resistor for setting the frequency.
4. CT: Timing capacitor for the oscillator.
5. SYNC: Synchronization input/output for clock signals.
6. CS: Current sense input for overcurrent protection.
7. EA+ and EA-: Error amplifier non-inverting and inverting inputs.
8. COMP: Compensation for the error amplifier.
9. SS: Soft start control.
10. ILIM: Current limit setting.
11. OUTA, OUTB, OUTC, OUTD: PWM output drive signals.
12. PGND: Power ground.
13. AGND: Analog ground.
14. DELAY: Sets delay for phase shifting.
15. SYNC_OUT: Synchronization output.
16. RAMP: Voltage ramp input for PWM modulation.
17. NC: No connection or not internally connected.
This concise summary outlines the essential pin functions for the UCC2895DWTR PWM controller.

Manufacturer

The UCC2895DWTR is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is an American technology company headquartered in Dallas, Texas. It is one of the largest semiconductor companies in the world, known for designing and manufacturing semiconductors and various integrated circuits, which are used in a wide array of electronic devices. The company primarily focuses on developing analog chips and embedded processors, but its products also span digital light processing technology, calculators, and education technology. Texas Instruments serves various industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. Its reputation for innovation and reliability has made it a key player in the semiconductor industry.

Application

The UCC2895DWTR is a versatile high-performance pulse width modulator (PWM) controller primarily used in power electronics applications. Its main application areas include isolated DC-DC converters, such as those found in telecommunications, server power supplies, and industrial power systems. The device is suitable for designing high-efficiency, high-frequency power converters, often used in applications requiring tight regulation and high power density. Additionally, due to its advanced features like programmable switching frequencies, soft-start capability, and adaptable dead-time control, it can be effectively utilized in synchronous rectification and phase-shifted full-bridge converters. Overall, the UCC2895DWTR is ideal for applications demanding efficient power conversion and precise control.

Package

The UCC2895DWTR is a pulse width modulation (PWM) controller IC from Texas Instruments. It comes in a 20-pin SOIC (Small Outline Integrated Circuit) package, denoted by the "DW" in the part number. The "T" indicates it is a tape and reel version for automated assembly.

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