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TOP253GN
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TOP253GN

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High efficiency, low power consumption
  • Package: DIP-8 (Dual In-line Package)
  • Essence: Switching Power Supply Controller
  • Packaging/Quantity: Tray, 250 pieces per tray

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 30W
  • Switching Frequency: 132 kHz
  • Operating Temperature Range: -40°C to +125°C
  • Protection Features: Overload protection, overvoltage protection, thermal shutdown

Detailed Pin Configuration

The TOP253GN IC has the following pin configuration:

  1. VCC: Power supply voltage input
  2. FB: Feedback pin for regulating output voltage
  3. GND: Ground reference
  4. COMP: Compensation pin for loop stability
  5. RT/CT: Timing resistor and capacitor connection for setting switching frequency
  6. DRAIN: High-voltage power MOSFET drain connection
  7. SOURCE: High-voltage power MOSFET source connection
  8. BYPASS: Bypass pin for reducing EMI emissions

Functional Features

  • Integrated high-voltage power MOSFET
  • Primary-side control eliminates optocoupler and secondary-side feedback components
  • Auto-restart protection for fault conditions
  • Frequency jittering for reduced EMI emissions
  • Built-in soft-start for controlled startup

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Simplified circuit design with primary-side control - Compact package size - Wide input voltage range

Disadvantages: - Limited output power compared to higher-rated controllers - Requires external components for complete power supply implementation

Working Principles

The TOP253GN is a primary-side regulated switcher IC that operates in a flyback topology. It uses a high-voltage power MOSFET to switch the input voltage across the primary winding of the transformer. The feedback mechanism adjusts the duty cycle of the switching waveform to regulate the output voltage. The integrated control circuitry provides various protection features and ensures stable operation.

Detailed Application Field Plans

The TOP253GN is commonly used in various applications, including:

  1. AC-DC power supplies for consumer electronics
  2. LED lighting drivers
  3. Industrial power systems
  4. Telecom power supplies
  5. Offline battery chargers

Detailed and Complete Alternative Models

Some alternative models to TOP253GN include:

  1. TOP254GN: Similar specifications with enhanced protection features
  2. TOP256EN: Higher output power capability
  3. TOP257YN: Lower cost variant with reduced features
  4. TOP249YN: Higher output power and wider input voltage range

These alternative models provide flexibility in choosing the right IC based on specific requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af TOP253GN i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of TOP253GN in technical solutions:

  1. Q: What is TOP253GN? A: TOP253GN is a high-performance integrated switcher IC (integrated circuit) designed for offline power supplies.

  2. Q: What are the typical applications of TOP253GN? A: TOP253GN is commonly used in various technical solutions such as AC/DC power supplies, LED lighting, industrial controls, and consumer electronics.

  3. Q: What is the input voltage range supported by TOP253GN? A: TOP253GN supports a wide input voltage range from 85VAC to 265VAC.

  4. Q: What is the output power range that TOP253GN can handle? A: TOP253GN can handle output power ranging from a few watts up to approximately 100 watts.

  5. Q: Does TOP253GN require an external MOSFET? A: Yes, TOP253GN requires an external MOSFET to control the switching operation.

  6. Q: Can TOP253GN operate in a flyback topology? A: Yes, TOP253GN is specifically designed for flyback converter topologies.

  7. Q: What are the key features of TOP253GN? A: Some key features of TOP253GN include primary-side regulation, frequency jittering for low EMI, built-in protection features, and high efficiency.

  8. Q: Is TOP253GN suitable for universal input voltage designs? A: Yes, TOP253GN is well-suited for universal input voltage designs due to its wide input voltage range.

  9. Q: Does TOP253GN have built-in overvoltage protection? A: Yes, TOP253GN incorporates built-in overvoltage protection to safeguard the system from voltage spikes.

  10. Q: Are there any reference designs available for TOP253GN? A: Yes, Power Integrations, the manufacturer of TOP253GN, provides various reference designs and application notes to assist in implementing the IC in different technical solutions.

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