TOP243PN

Product Overview

Category: Integrated Circuit
Use: Power Management
Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
Package: DIP-7 (Dual In-line Package)
Essence: Offline Switcher
Packaging/Quantity: Tube/50 pieces

Specifications

Input Voltage Range: 85VAC to 265VAC
Output Power: Up to 45W
Switching Frequency: 132 kHz to 150 kHz
Operating Temperature Range: -40°C to +150°C
Protection Features: Overload Protection, Overvoltage Protection, Overtemperature Protection

Detailed Pin Configuration

VCC: Supply Voltage
GND: Ground
FB: Feedback Pin
COMP: Compensation Pin
DRAIN: Drain Pin
SOURCE: Source Pin
CONTROL: Control Pin

Functional Features

Primary-Side Regulation (PSR): Eliminates the need for an optocoupler and secondary-side feedback components.
Frequency Jittering: Reduces EMI emissions and improves system reliability.
Auto-Restart Protection: Ensures continuous operation by automatically restarting after a fault condition is removed.
Cycle-by-Cycle Current Limiting: Provides accurate current limiting for improved system protection.

Advantages

High efficiency and low standby power consumption.
Wide input voltage range allows for worldwide compatibility.
Integrated protection features enhance system reliability.
Simplified design due to primary-side regulation.

Disadvantages

Limited output power compared to higher-rated devices.
Requires external components for proper operation.
Not suitable for high-power applications.

Working Principles

The TOP243PN is an offline switcher that operates in a flyback topology. It uses primary-side regulation (PSR) to control the output voltage without the need for an optocoupler or secondary-side feedback components. The device incorporates a high-voltage power MOSFET, which enables it to handle a wide input voltage range. By utilizing frequency jittering and cycle-by-cycle current limiting techniques, the TOP243PN achieves high efficiency and reliable operation.

Detailed Application Field Plans

The TOP243PN is commonly used in various power management applications, including:

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

Detailed and Complete Alternative Models

TOP242PN: Similar specifications and features, but with a lower output power rating.
TOP244PN: Higher output power rating compared to TOP243PN.
TOP245PN: Offers additional protection features such as brownout protection.

Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's datasheet for a complete list.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TOP243PN v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TOP243PN in technical solutions:

Q: What is TOP243PN? A: TOP243PN is a highly integrated offline switcher IC (integrated circuit) that provides high efficiency, low standby power, and excellent EMI performance for various power supply applications.
Q: What are the typical applications of TOP243PN? A: TOP243PN is commonly used in applications such as power adapters, chargers, set-top boxes, LED lighting, industrial controls, and other low-power systems.
Q: What is the input voltage range supported by TOP243PN? A: TOP243PN supports a wide input voltage range from 85VAC to 265VAC, making it suitable for worldwide use.
Q: What is the maximum output power that can be achieved with TOP243PN? A: The maximum output power depends on the specific design and thermal considerations, but typically ranges from 15W to 50W.
Q: Does TOP243PN require an external MOSFET? A: No, TOP243PN integrates a high-voltage power MOSFET, eliminating the need for an external MOSFET in most applications.
Q: How does TOP243PN achieve high efficiency? A: TOP243PN utilizes advanced control techniques like frequency jittering and frequency foldback to achieve high efficiency across a wide load range.
Q: Can TOP243PN operate in a continuous or discontinuous mode? A: TOP243PN can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), depending on the load conditions.
Q: Is TOP243PN capable of providing protection features? A: Yes, TOP243PN incorporates various protection features such as overvoltage protection (OVP), overload protection (OLP), and thermal shutdown to ensure safe operation.
Q: What is the typical operating frequency of TOP243PN? A: The typical operating frequency of TOP243PN is around 100 kHz, but it can be externally adjusted to meet specific requirements.
Q: Are there any reference designs available for TOP243PN? A: Yes, Power Integrations, the manufacturer of TOP243PN, provides a range of reference designs and application notes that can help in implementing the IC effectively in different applications.

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