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TPS2112APWG4
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TPS2112APWG4

Overview

Product Category

The TPS2112APWG4 belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This IC is primarily used for power multiplexing applications, where it enables seamless switching between two power sources.

Characteristics

  • Power multiplexer with low on-resistance
  • Supports input voltages ranging from 1.8V to 5.5V
  • Can handle continuous output currents up to 2A
  • Provides reverse current blocking to prevent backflow
  • Low quiescent current consumption
  • Fast switching speed for efficient power source selection

Package

The TPS2112APWG4 comes in a small-sized package known as PowerPAD™ MSOP-10. This package offers excellent thermal performance and ease of soldering.

Essence

The essence of the TPS2112APWG4 lies in its ability to seamlessly switch between two power sources, ensuring uninterrupted power supply to the load.

Packaging/Quantity

The TPS2112APWG4 is typically available in reels containing 2500 units per reel.

Specifications

  • Input Voltage Range: 1.8V to 5.5V
  • Continuous Output Current: Up to 2A
  • On-Resistance (Rdson): Typically 50mΩ
  • Quiescent Current: Typically 20µA
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS2112APWG4 has a total of 10 pins, which are assigned specific functions:

  1. EN: Enable pin for controlling the IC's operation.
  2. IN1: Input 1 pin for connecting the primary power source.
  3. IN2: Input 2 pin for connecting the secondary power source.
  4. GND: Ground pin for reference potential.
  5. VOUT: Output pin for supplying power to the load.
  6. FLT: Fault indicator pin for signaling any abnormal conditions.
  7. NC: No connection pin.
  8. NC: No connection pin.
  9. NC: No connection pin.
  10. NC: No connection pin.

Functional Features

  • Automatic power source selection based on availability and priority.
  • Fast switching speed ensures minimal disruption during power source transitions.
  • Reverse current blocking prevents backflow from the output to the input sources.
  • Low on-resistance minimizes power losses and heat dissipation.
  • Fault indicator pin provides status information for easy troubleshooting.

Advantages and Disadvantages

Advantages

  • Seamless power source switching ensures uninterrupted power supply.
  • Low quiescent current consumption prolongs battery life in portable applications.
  • Fast switching speed minimizes downtime during power source transitions.
  • Reverse current blocking protects the power sources from damage.

Disadvantages

  • Limited to two power sources, may not be suitable for applications requiring more than two sources.
  • Relatively small continuous output current limit of 2A may restrict usage in high-power applications.

Working Principles

The TPS2112APWG4 operates by continuously monitoring the input voltage levels of both power sources. It automatically selects the power source with the highest voltage as the primary source. If the primary source voltage drops below a certain threshold, it swiftly switches to the secondary source to ensure uninterrupted power supply to the load. The IC also incorporates reverse current blocking to prevent any backflow from the output to the input sources.

Detailed Application Field Plans

The TPS2112APWG4 finds applications in various fields, including:

  1. Portable electronic devices: Enables seamless power source switching between batteries and external power adapters, ensuring uninterrupted operation.
  2. Automotive systems: Facilitates smooth transition between the vehicle's battery and an auxiliary power source, such as a generator or a supercapacitor.
  3. Industrial automation: Provides reliable power source selection for critical control systems, preventing downtime due to power source failures.
  4. Telecommunications: Enables efficient power management in telecom equipment, allowing seamless switching between primary and backup power sources.

Detailed and Complete Alternative Models

  1. TPS2110APWG4: Similar to TPS2112APWG4 but with a lower continuous output current rating of 1A.
  2. TPS2113APWG4: Similar to TPS2112APWG4 but with an extended input voltage range of 1.8V to 6.5V.
  3. TPS2114APWG4: Similar to TPS2112APWG4 but with a higher continuous output current rating of 3A.

These alternative models offer similar functionality with slight variations in specifications to cater to different application requirements.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät TPS2112APWG4 :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of TPS2112APWG4 in technical solutions:

  1. Q: What is TPS2112APWG4? A: TPS2112APWG4 is a dual-channel power multiplexer IC designed for switching between two power sources in electronic systems.

  2. Q: What are the key features of TPS2112APWG4? A: Some key features of TPS2112APWG4 include low on-resistance, wide input voltage range, overcurrent protection, and thermal shutdown.

  3. Q: How does TPS2112APWG4 work? A: TPS2112APWG4 works by monitoring the input voltage levels and automatically selecting the higher voltage source to power the load.

  4. Q: What are the typical applications of TPS2112APWG4? A: TPS2112APWG4 is commonly used in battery-powered devices, portable electronics, USB-powered devices, and other systems requiring power source selection.

  5. Q: Can TPS2112APWG4 handle high currents? A: Yes, TPS2112APWG4 can handle currents up to a certain limit, typically mentioned in the datasheet. It is important to ensure that the load current does not exceed this limit.

  6. Q: Does TPS2112APWG4 require external components for operation? A: Yes, TPS2112APWG4 requires external capacitors and resistors for proper operation. The datasheet provides guidelines for selecting these components.

  7. Q: Is TPS2112APWG4 compatible with different power supply voltages? A: Yes, TPS2112APWG4 has a wide input voltage range, making it compatible with various power supply voltages commonly used in electronic systems.

  8. Q: Can TPS2112APWG4 handle reverse voltage protection? A: No, TPS2112APWG4 does not provide reverse voltage protection. Additional circuitry or external components may be required for reverse voltage protection.

  9. Q: How can I control the power source selection in TPS2112APWG4? A: TPS2112APWG4 has control pins that can be connected to a microcontroller or other digital logic to manually control the power source selection.

  10. Q: Are there any recommended layout guidelines for using TPS2112APWG4? A: Yes, the datasheet of TPS2112APWG4 provides layout guidelines to minimize noise, ensure proper thermal dissipation, and optimize performance.

Please note that these answers are general and it is always recommended to refer to the specific datasheet and application notes provided by the manufacturer for accurate information and guidelines.