TOP253EN

Product Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
Package: DIP-8, SO-8
Essence: Offline Switcher
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Input Voltage Range: 85VAC to 265VAC
Output Power: Up to 30W
Frequency Range: 50Hz to 60Hz
Output Voltage: 5V to 48V
Efficiency: Up to 88%
Standby Power: Less than 100mW

Detailed Pin Configuration

VDD: Power Supply
FB: Feedback Pin
GND: Ground
CS: Current Sense Pin
DRAIN: Power MOSFET Drain Pin
SOURCE: Power MOSFET Source Pin
VSENSE: Voltage Sense Pin
COMP: Compensation Pin

Functional Features

Integrated 700V MOSFET
Built-in Frequency Jittering for EMI Reduction
Auto-restart Protection for Overload and Open Loop Faults
Cycle-by-Cycle Current Limiting
Line Under-Voltage Lockout with Hysteresis
Over-Temperature Protection

Advantages and Disadvantages

Advantages: - High Efficiency - Low Standby Power Consumption - Wide Input Voltage Range - Compact Size - Cost-effective Solution

Disadvantages: - Requires External Components for Operation - Limited Output Power (Up to 30W)

Working Principles

The TOP253EN is an offline switcher IC that operates in a flyback topology. It provides high-efficiency power conversion by integrating a 700V MOSFET and various protection features. The IC uses frequency jittering to reduce electromagnetic interference (EMI) emissions. It also incorporates auto-restart protection, cycle-by-cycle current limiting, and over-temperature protection for enhanced reliability.

Detailed Application Field Plans

The TOP253EN is widely used in various power management applications, including:

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

Detailed and Complete Alternative Models

TOP250YN: Similar specifications and features, different package (PDIP-8)
TOP254EN: Higher output power capability (up to 50W), similar pin configuration
TOP257EN: Higher input voltage range (up to 305VAC), similar characteristics and package

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TOP253EN v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TOP253EN in technical solutions:

Q: What is TOP253EN?
A: TOP253EN is a high-performance offline switcher IC designed for low-power applications.
Q: What are the typical applications of TOP253EN?
A: TOP253EN is commonly used in power supplies, LED lighting, industrial controls, and consumer electronics.
Q: What is the input voltage range supported by TOP253EN?
A: TOP253EN supports an input voltage range of 85VAC to 265VAC.
Q: What is the maximum output power that can be achieved with TOP253EN?
A: The maximum output power depends on the specific design and external components used, but it can typically reach up to 30W.
Q: Does TOP253EN require an external MOSFET?
A: Yes, TOP253EN requires an external MOSFET to handle the switching operation.
Q: Can TOP253EN operate in a wide temperature range?
A: Yes, TOP253EN has a wide operating temperature range of -40°C to +150°C.
Q: Is TOP253EN suitable for flyback converter designs?
A: Yes, TOP253EN is specifically designed for flyback converter applications.
Q: Does TOP253EN have built-in protection features?
A: Yes, TOP253EN includes various protection features such as overvoltage protection, overload protection, and thermal shutdown.
Q: Can TOP253EN be used in both isolated and non-isolated power supply designs?
A: Yes, TOP253EN can be used in both isolated and non-isolated power supply configurations.
Q: Are there any evaluation boards available for TOP253EN?
A: Yes, Power Integrations provides evaluation boards and reference designs to help with the development and testing of TOP253EN-based solutions.

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