TOP256PG

Product Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
Package: TO-220-7L
Essence: Offline Switcher
Packaging/Quantity: Tube/50 pieces

Specifications

Input Voltage Range: 85VAC to 265VAC
Output Power: Up to 45W
Frequency Range: 50kHz to 300kHz
Operating Temperature Range: -40°C to +150°C
Maximum Duty Cycle: 75%
Maximum Output Voltage: 30V
Maximum Output Current: 1.5A

Detailed Pin Configuration

Drain
Source
Feedback
Ground
VCC
Sync
Control

Functional Features

Integrated 700V MOSFET
Built-in frequency jittering for EMI reduction
Auto-restart protection for overvoltage and overcurrent faults
Accurate current limit and hysteretic thermal shutdown protection
Frequency foldback for improved efficiency at light load conditions

Advantages

High efficiency conversion
Low standby power consumption
Wide input voltage range allows for global compatibility
Compact TO-220-7L package for easy integration
Robust protection features ensure system reliability

Disadvantages

Limited maximum output voltage and current
Requires external components for complete power supply design
Relatively high operating temperature range

Working Principles

The TOP256PG is an offline switcher IC that utilizes a flyback topology to convert high-voltage AC input into low-voltage DC output. It integrates a 700V MOSFET, which enables efficient power conversion. The IC operates by controlling the duty cycle of the switching transistor based on the feedback signal received from the output voltage. This feedback loop ensures stable and regulated output voltage.

Detailed Application Field Plans

The TOP256PG is commonly used in various power management applications, including:

AC-DC Adapters
LED Lighting
Set-Top Boxes
Audio/Video Equipment
Industrial Power Supplies

Detailed and Complete Alternative Models

TOP257PN: Similar specifications, different package (DIP-8)
TOP258PN: Higher output power (up to 65W), similar specifications, different package (DIP-8)
TOP255PN: Lower output power (up to 30W), similar specifications, different package (DIP-8)

(Note: The above alternative models are provided for reference and may have slight variations in features and performance.)

In conclusion, the TOP256PG is a highly efficient offline switcher IC designed for power management applications. Its compact package, wide input voltage range, and robust protection features make it suitable for various industries. However, its limited maximum output voltage and current should be considered when selecting the appropriate model for specific applications.

Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van TOP256PG in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of TOP256PG in technical solutions:

Q: What is TOP256PG? A: TOP256PG is a high-performance integrated switcher IC (integrated circuit) designed for offline power supplies.
Q: What are the typical applications of TOP256PG? A: TOP256PG is commonly used in various applications such as LED lighting, industrial power supplies, consumer electronics, and telecommunication equipment.
Q: What is the maximum output power that TOP256PG can handle? A: TOP256PG can handle output power up to 100 watts, making it suitable for a wide range of power supply requirements.
Q: Can TOP256PG operate with both AC and DC input voltages? A: No, TOP256PG is specifically designed for AC input voltages ranging from 85VAC to 265VAC.
Q: Does TOP256PG have built-in protection features? A: Yes, TOP256PG incorporates various protection features like overvoltage protection (OVP), overload protection (OLP), and thermal shutdown.
Q: What is the efficiency of TOP256PG? A: TOP256PG offers high efficiency, typically above 90%, which helps in reducing power losses and improving overall system performance.
Q: Can TOP256PG be used in dimmable lighting applications? A: Yes, TOP256PG can be used in dimmable lighting applications by integrating external components like a dimming controller.
Q: Is TOP256PG suitable for universal input voltage applications? A: Yes, TOP256PG is designed to work with a wide input voltage range, making it suitable for universal input voltage applications.
Q: Can TOP256PG be used in battery-powered applications? A: No, TOP256PG is not suitable for battery-powered applications as it requires an AC input voltage.
Q: Are there any reference designs available for TOP256PG? A: Yes, the manufacturer provides reference designs and application notes that can help in implementing TOP256PG in various technical solutions.

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