TOP244G-TL

Product Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: High efficiency, low standby power, compact size
Package: TO-220-7L
Essence: Switching Power Supply Controller
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Input Voltage Range: 85VAC to 265VAC
Output Power: Up to 45W
Frequency Range: 50Hz to 60Hz
Operating Temperature Range: -40°C to +150°C
Efficiency: Up to 89%
Standby Power: Less than 100mW

Detailed Pin Configuration

VSENSE: Voltage Feedback Input
FB: Feedback Input
GND: Ground
DRAIN: Power MOSFET Drain Connection
SOURCE: Power MOSFET Source Connection
VCC: Supply Voltage Input
COMP: Compensation Pin for Loop Stability

Functional Features

Primary-Side Regulation (PSR) Control
Built-in Overload Protection
Auto-restart After Fault Condition
Frequency Jittering for EMI Reduction
Cycle-by-Cycle Current Limiting
Accurate Constant Output Voltage

Advantages

High Efficiency Leads to Energy Savings
Low Standby Power Reduces Power Consumption
Compact Size Enables Space-Saving Designs
Wide Input Voltage Range for Universal Compatibility
Robust Overload Protection Ensures System Safety

Disadvantages

Limited Output Power (Up to 45W)
Relatively High Operating Temperature Range
Requires External Components for Complete Power Supply Design

Working Principles

The TOP244G-TL is a switching power supply controller that utilizes primary-side regulation (PSR) control. It operates by modulating the duty cycle of the power MOSFET to regulate the output voltage. The controller continuously monitors the feedback voltage and adjusts the duty cycle accordingly to maintain a constant output voltage. This approach eliminates the need for an optocoupler or secondary-side feedback circuit, simplifying the design and reducing costs.

Detailed Application Field Plans

The TOP244G-TL is commonly used in various applications, including:

AC/DC Power Supplies
LED Lighting Systems
Home Appliances
Industrial Equipment
Consumer Electronics

Detailed and Complete Alternative Models

TOP243G-TL
TOP245G-TL
TOP246G-TL
TOP247G-TL

These alternative models offer similar functionality and performance characteristics, providing designers with flexibility in choosing the most suitable option for their specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TOP244G-TL v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TOP244G-TL in technical solutions:

Q: What is TOP244G-TL? A: TOP244G-TL is a highly integrated offline switcher IC designed for low-power applications, offering high efficiency and excellent performance.
Q: What are the typical applications of TOP244G-TL? A: TOP244G-TL is commonly used in various applications such as power supplies for set-top boxes, DVD players, audio amplifiers, and other consumer electronics.
Q: What is the maximum output power that TOP244G-TL can handle? A: TOP244G-TL can handle up to 90W of output power, making it suitable for many low-power applications.
Q: Does TOP244G-TL require an external MOSFET? A: No, TOP244G-TL integrates a high-voltage power MOSFET, eliminating the need for an external MOSFET.
Q: What is the input voltage range supported by TOP244G-TL? A: TOP244G-TL supports a wide input voltage range from 85VAC to 265VAC, making it compatible with different mains voltages worldwide.
Q: Can TOP244G-TL operate in continuous or discontinuous conduction mode? A: TOP244G-TL can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), providing flexibility in various load conditions.
Q: Does TOP244G-TL have built-in protection features? A: Yes, TOP244G-TL incorporates various protection features like overvoltage protection (OVP), overload protection (OLP), and thermal shutdown to ensure safe operation.
Q: What is the efficiency of TOP244G-TL? A: TOP244G-TL offers high efficiency, typically above 85%, which helps to reduce power dissipation and improve overall system performance.
Q: Can TOP244G-TL be used in flyback or buck-boost converter topologies? A: Yes, TOP244G-TL can be used in both flyback and buck-boost converter topologies, providing flexibility in different power supply designs.
Q: Is there any reference design available for TOP244G-TL? A: Yes, Power Integrations provides reference designs and application notes that can help engineers in implementing TOP244G-TL in their technical solutions.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios.