UCC2895PW

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UCC2895PW

IC OFFLINE SW FULL-BRG 20TSSOP

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規格

Part Status Active
Output Type PWM
Output Configuration Positive
Topology Phase-Shifted Full-Bridge
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 10V ~ 16.5V
Frequency - Switching 1MHz
Duty Cycle (Max) 100%
Clock Sync Yes
Control Features Frequency Control, Soft Start, Sync
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-TSSOP
Base Product Number UCC2895

概述

Description

The UCC2895PW is a high-performance, digital controller designed for isolated power supply applications, particularly in systems requiring high efficiency and precision. It supports various topologies, including flyback and forward converters, and is particularly suited for high-voltage applications. The controller features a robust PWM (Pulse Width Modulation) control scheme that optimizes efficiency across a wide load range.
Key features include advanced voltage regulation, programmable switching frequency, and integrated protection mechanisms such as over-voltage, under-voltage, and over-temperature protection. The UCC2895PW also incorporates digital control capabilities, allowing for precise management of output voltage and current.
Designed for ease of use, the UCC2895PW can be configured with minimal external components, making it ideal for compact power supply designs. Its compatibility with various feedback methods, such as voltage mode and current mode control, enhances its versatility in different applications. Overall, the UCC2895PW is an efficient solution for modern power supply needs, particularly in telecommunications, industrial, and consumer electronics.

Features

The UCC2895PW is a high-performance, high-frequency, average current mode PWM (Pulse Width Modulation) controller designed for isolated and non-isolated DC-DC converters. Key features include:
1. Adaptive Voltage Positioning: Enhances transient response by adjusting output voltage during load changes.
2. Average Current Mode Control: Provides improved line and load regulation, enhancing stability and robustness.
3. Programmable Switching Frequency: Offers flexibility in frequency settings, typically ranging from 50 kHz to 1 MHz.
4. Soft-Start Function: Reduces inrush current by controlling the startup sequence.
5. Integrated Drivers: Includes high-side and low-side MOSFET drivers for efficient power stage control.
6. Protection Features: Incorporates multiple protection mechanisms, such as over-voltage, under-voltage, and thermal shutdown.
7. Power Good Indicator: Provides a signal indicating the health of the output voltage.
8. Compact Package: Available in a 20-pin HTQFP package for space-constrained designs.
These features make the UCC2895PW suitable for applications in power supplies for telecom, industrial, and consumer electronics.

Package

The UCC2895PW is packaged in a TSSOP (Thin Shrink Small Outline Package) with 20 pins. This surface-mount package is designed for compact applications, offering a small footprint while providing efficient thermal performance.

Pinout

The UCC2895PW is a controller for resonant converters and has a total of 28 pins. Its key functions include:
1. Power Regulation: It regulates output voltage and current in resonant power supplies.
2. Control Signals: Provides PWM control signals to drive power switches.
3. Feedback and Compensation: Implements feedback compensation for stable operation.
4. Soft Start: Offers soft-start functionality to minimize inrush current.
5. Protection Features: Includes over-voltage, under-voltage, and over-current protection.
6. Timing and Frequency Control: Allows programmable switching frequency and timing adjustments.
The UCC2895 is suited for high-efficiency applications like power adapters and battery chargers. For specific pin functions, please refer to the device's datasheet.

Manufacturer

The UCC2895PW is manufactured by Texas Instruments, Inc. Texas Instruments is a global semiconductor company known for designing and manufacturing a range of analog and embedded processing products. Founded in 1930, the company is headquartered in Dallas, Texas, and serves various sectors, including automotive, industrial, communications, and consumer electronics. Texas Instruments is particularly recognized for its innovations in analog technology, signal processing, and microcontrollers. The UCC2895PW is a specific device used in power supply applications, showcasing the company's expertise in power management solutions.

Application

The UCC2895PW is a digital power controller primarily used in applications such as AC-DC power supplies, isolated DC-DC converters, and power factor correction (PFC) circuits. Its high efficiency, advanced control algorithms, and fault protection features make it suitable for industrial power supplies, telecommunications, and battery chargers, enhancing performance in renewable energy systems and electric vehicle charging as well.

Equivalent

The UCC2895PW is a PWM controller for power supply applications. Equivalent products include the UCC28910, UCC28911, and UCC28912, which offer similar functionalities with variations in features like frequency, current limit, and control type. Other alternatives might include the LM5118 and LM5119 from Texas Instruments, as well as the MAX5002 from Maxim Integrated. Always check specific datasheets for compatibility and performance characteristics.

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