Power Integrations
Das Bild kann eine Darstellung sein.
Siehe Spezifikationen für Produktdetails.
TOP256EG
Im Detail sehen Datenblätter

TOP256EG

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
  • Package: TO-220-7L
  • Essence: Switching Power Supply Controller
  • Packaging/Quantity: Tray, 500 units per tray

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 100W
  • Switching Frequency: 132 kHz to 150 kHz
  • Operating Temperature Range: -40°C to +125°C
  • Protection Features: Overvoltage Protection, Overcurrent Protection, Thermal Shutdown

Detailed Pin Configuration

  1. VCC: Power supply voltage input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. COMP: Compensation pin for loop stability
  5. DRAIN: High-voltage power MOSFET drain connection
  6. SOURCE: High-voltage power MOSFET source connection
  7. CS: Current sense pin for current limit and overcurrent protection

Functional Features

  • Integrated high-voltage power MOSFET
  • Auto-restart protection for short-circuit and open-loop faults
  • Frequency jittering for reduced EMI
  • Built-in soft-start for controlled startup
  • Cycle-by-cycle current limit

Advantages

  • High efficiency leading to energy savings
  • Low standby power consumption
  • Wide input voltage range for versatile applications
  • Comprehensive protection features ensure system reliability
  • Compact TO-220-7L package for easy integration

Disadvantages

  • Requires external components for complete power supply design
  • Limited output power compared to higher-rated models
  • Not suitable for high-frequency applications

Working Principles

The TOP256EG is a switching power supply controller that regulates the output voltage by controlling the duty cycle of the internal power MOSFET. It operates in a flyback topology, where energy is stored in the transformer during the switch-on time and transferred to the output during the switch-off time. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle accordingly to maintain a stable output.

Detailed Application Field Plans

The TOP256EG is widely used in various applications requiring efficient power management. Some common application fields include:

  1. Consumer Electronics: Power adapters for laptops, gaming consoles, and set-top boxes.
  2. Industrial Equipment: LED lighting, motor drives, and industrial control systems.
  3. Telecommunications: Power supplies for routers, switches, and base stations.
  4. Automotive: On-board chargers for electric vehicles and battery management systems.

Detailed and Complete Alternative Models

  • TOP257EN: Similar specifications with enhanced features for higher power applications.
  • TOP258PN: Higher power capability with additional protection features.
  • TOP259GN: Wide input voltage range and extended temperature range for rugged environments.

Note: This is not an exhaustive list, and there are several other alternative models available from various manufacturers.

Word count: 443 words

Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von TOP256EG in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of TOP256EG in technical solutions:

  1. Q: What is TOP256EG? A: TOP256EG is a highly integrated offline switcher IC (integrated circuit) designed for low-power applications.

  2. Q: What are the typical applications of TOP256EG? A: TOP256EG is commonly used in power supplies for appliances, industrial controls, LED lighting, and other low-power systems.

  3. Q: What is the maximum output power that TOP256EG can handle? A: TOP256EG can handle up to 94W of output power, making it suitable for various low-power applications.

  4. Q: Does TOP256EG require an external MOSFET? A: No, TOP256EG integrates a high-voltage power MOSFET, eliminating the need for an external MOSFET.

  5. Q: Can TOP256EG operate in a wide input voltage range? A: Yes, TOP256EG can operate in a wide input voltage range, typically from 85VAC to 265VAC.

  6. Q: Is TOP256EG suitable for universal input power supplies? A: Yes, TOP256EG is designed for universal input power supplies, making it compatible with different mains voltages worldwide.

  7. Q: Does TOP256EG have built-in protection features? A: Yes, TOP256EG incorporates various protection features like overvoltage protection, overload protection, and thermal shutdown.

  8. Q: Can TOP256EG provide constant current output for LED lighting? A: Yes, TOP256EG supports constant current control, making it suitable for driving LED lighting applications.

  9. Q: Does TOP256EG offer feedback options for voltage regulation? A: Yes, TOP256EG provides options for voltage feedback regulation, allowing precise control over the output voltage.

  10. Q: Is TOP256EG available in different package options? A: Yes, TOP256EG is available in various package options, including TO-220, TO-263, and eSIP-7F, providing flexibility for different designs.

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