UCC2893DR

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UCC2893DR

IC REG CTRLR MULT TOP 16SOIC

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputType Transistor Driver
Function Step-Up/Step-Down
OutputConfiguration Positive, Isolation Capable
Topology Flyback, Forward Converter
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 8.5V ~ 16V
Frequency-Switching 250kHz
DutyCycle(Max) 70%
SynchronousRectifier No
ClockSync Yes
ControlFeatures Current Limit, Enable, On Time Control, Ramp, Soft Start
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 16-SOIC (0.154, 3.90mm Width)

概述

Description

The UCC2893DR is a synchronous pulse width modulation (PWM) controller developed by Texas Instruments, designed primarily for high-efficiency power supply applications. It is part of the UCC2893 series, known for its utility in managing full-bridge and push-pull power converters. This controller offers advanced features such as peak current mode control, which enhances transient response and simplifies loop compensation.
Key features of the UCC2893DR include programmable maximum duty cycle, adjustable switching frequency, and slope compensation. It supports high efficiency due to its synchronous rectification capabilities and includes a high-precision voltage reference for accurate output regulation. The part is packaged in a small, thermally efficient SOIC-8 (small-outline integrated circuit) package, making it suitable for compact power supply designs.
Additionally, the UCC2893DR includes protection features like overcurrent protection to enhance the reliability of the power supply. It is widely used in telecommunication equipment, server power supplies, and distributed power systems, where efficient power management is crucial. Its robust functionality and ease of use make it a popular choice for designers looking to develop energy-efficient power solutions.

Features

The UCC2893DR is a versatile active clamp PWM controller from Texas Instruments, designed for high-efficiency power supply applications. It features a programmable maximum duty cycle, allowing flexibility in design. This controller supports both voltage and current mode control, enhancing its adaptability to various power supply designs. It includes an integrated high-voltage start-up circuit that reduces standby power consumption and improves efficiency.
The UCC2893DR offers programmable soft-start and slope compensation, which helps in controlling inrush currents and stabilizing the system. It also includes cycle-by-cycle current limiting and overcurrent protection, ensuring the safety and reliability of the power supply.
With an operating frequency range of up to 1 MHz, it supports high-frequency applications, providing compact power supply solutions. The device comes in an 8-pin SOIC package, making it suitable for compact designs. It also features an adjustable dead time, which aids in optimizing the power supply efficiency by minimizing switching losses. Overall, the UCC2893DR is ideal for designing efficient and reliable power supplies in various electronic applications.

Package

The UCC2893DR is a current-mode PWM controller by Texas Instruments, typically available in an 8-pin SOIC (Small Outline Integrated Circuit) package. The "DR" suffix indicates a tape and reel packaging for automated assembly processes.

Pinout

The UCC2893DR is a peak current mode PWM controller designed for high-efficiency synchronous buck converters. It is typically used in power supply applications. The device comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here’s a brief overview of its pin functions:
1. VIN: Supply voltage input.
2. VREF: Reference voltage output.
3. RT/CT: Sets the oscillator frequency.
4. CS: Current sense input.
5. COMP: Output of the error amplifier and input to the PWM comparator.
6. GATE: Drives the gate of the external MOSFET.
7. GND: Ground.
8. SS/ENA: Soft start and enable pin.
These pins facilitate the control and operation of the power converter, allowing for functions like frequency setting, current sensing, and soft start, which are essential for efficient power management in electronic devices.

Manufacturer

The UCC2893DR is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company that specializes in designing and manufacturing semiconductors and various integrated circuits, which they sell to electronics designers and manufacturers globally. TI is known for its focus on developing analog chips and embedded processors and has a strong presence in the electronics industry. The company supplies a broad range of products that are used in various applications, including industrial, automotive, personal electronics, communications equipment, and enterprise systems.

Application

The UCC2893DR is a PWM controller commonly used in power supply applications. Its primary application areas include isolated and non-isolated DC-DC converters, telecom power supplies, and industrial power management systems. It excels in applications requiring high efficiency and precise voltage regulation, such as in server power supplies, telecom infrastructure, and battery management systems. The UCC2893DR is also utilized in renewable energy systems and automotive power systems due to its ability to manage power effectively in various loading conditions.

Equivalent

The UCC2893DR is a PWM controller from Texas Instruments used in active clamp forward converters. Equivalent products include:
1. UCC2891: Another active clamp PWM controller from TI, similar in functionality.
2. NCP1562: ON Semiconductor's PWM controller for active clamp or standard forward topologies.
3. LM5025: A PWM controller from Texas Instruments for active clamp forward converters.
These alternatives may vary in specific features and should be checked for compatibility with your design requirements.

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