Power Integrations
L'immagine può essere rappresentativa.
Vedi le specifiche per i dettagli del prodotto.
TOP253PNAU

TOP253PNAU

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High efficiency, low standby power, compact size
  • Package: DIP-8 (Dual In-line Package)
  • Essence: Switching Power Supply Controller
  • Packaging/Quantity: Tube packaging, 50 units per tube

Specifications

  • Input Voltage Range: 85VAC to 265VAC
  • Output Power: Up to 30W
  • Switching Frequency: 132 kHz
  • Operating Temperature Range: -40°C to +150°C
  • Protection Features: Overload protection, overvoltage protection, thermal shutdown

Detailed Pin Configuration

The TOP253PNAU 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. CS: Current sense pin for controlling switching frequency
  6. DRAIN: High-voltage power MOSFET drain connection
  7. SOURCE: High-voltage power MOSFET source connection
  8. NC: No connection

Functional Features

  • Integrated high-voltage power MOSFET
  • Primary-side control eliminates optocoupler and secondary-side feedback circuitry
  • Auto-restart protection for fault conditions
  • Frequency jittering for reduced EMI emissions
  • Built-in line undervoltage lockout (UVLO) with hysteresis

Advantages and Disadvantages

Advantages: - High efficiency leading to energy savings - Low standby power consumption - Compact size suitable for space-constrained applications - Simplified design due to primary-side control

Disadvantages: - Limited output power compared to higher-rated controllers - Requires careful consideration of thermal management due to high operating temperature range

Working Principles

The TOP253PNAU is a primary-side regulated (PSR) switcher IC. It operates by controlling the duty cycle of the power MOSFET based on the feedback received from the output voltage. This eliminates the need for an optocoupler and secondary-side feedback circuitry, reducing component count and cost.

The IC uses frequency jittering to spread the switching frequency spectrum, minimizing electromagnetic interference (EMI) emissions. It also incorporates various protection features such as overload protection, overvoltage protection, and thermal shutdown to ensure safe operation.

Detailed Application Field Plans

The TOP253PNAU is widely used in various applications, including:

  1. AC/DC power supplies for consumer electronics
  2. LED lighting drivers
  3. Industrial power supplies
  4. Auxiliary power supplies in appliances
  5. Battery chargers

Its compact size, high efficiency, and low standby power consumption make it suitable for space-constrained applications where energy efficiency is crucial.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the TOP253PNAU are:

  1. TOP256EN: Similar functionality with extended input voltage range
  2. LNK304GN: Low-cost alternative with similar specifications
  3. FAN7602B: Integrated power supply controller with additional features like power factor correction (PFC)

These alternative models provide flexibility in design choices based on specific requirements and constraints.

Word Count: 413

10 domande e risposte comuni relative all'applicazione di TOP253PNAU nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of TOP253PNAU in technical solutions:

  1. Q: What is TOP253PNAU? A: TOP253PNAU is a high-performance offline switcher IC (integrated circuit) designed for power supply applications.

  2. Q: What are the typical applications of TOP253PNAU? A: TOP253PNAU is commonly used in applications such as AC-DC power supplies, LED lighting, industrial controls, and consumer electronics.

  3. Q: What is the input voltage range supported by TOP253PNAU? A: The input voltage range of TOP253PNAU is typically between 85VAC and 265VAC.

  4. Q: What is the maximum output power that can be achieved with TOP253PNAU? A: TOP253PNAU can deliver up to 45 watts of output power depending on the specific design and operating conditions.

  5. Q: Does TOP253PNAU require an external MOSFET for operation? A: Yes, TOP253PNAU requires an external MOSFET to function as a power switch.

  6. Q: Can TOP253PNAU operate in a wide temperature range? A: Yes, TOP253PNAU is designed to operate reliably in a temperature range of -40°C to +150°C.

  7. Q: Is TOP253PNAU suitable for flyback converter designs? A: Yes, TOP253PNAU is specifically designed for flyback converter topologies and provides excellent performance in such applications.

  8. Q: Does TOP253PNAU have built-in protection features? A: Yes, TOP253PNAU incorporates various protection features like overvoltage protection, overcurrent protection, and thermal shutdown.

  9. Q: Can TOP253PNAU be used in designs requiring power factor correction (PFC)? A: Yes, TOP253PNAU supports power factor correction (PFC) functionality, making it suitable for designs that require high power factor.

  10. Q: Are there any evaluation boards or reference designs available for TOP253PNAU? A: Yes, Power Integrations, the manufacturer of TOP253PNAU, provides evaluation boards and reference designs to help engineers get started with their designs.

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