TOP242R-TL

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
• Package: TO-220-7C
• Essence: Offline Switcher
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 85 VAC to 265 VAC
• Output Power: Up to 45 W
• Frequency Range: 50 Hz to 60 Hz
• Operating Temperature Range: -40°C to +150°C
• Maximum Duty Cycle: 78%
• Maximum Output Voltage: 30 V
• Maximum Output Current: 1.5 A
• Maximum Switching Frequency: 132 kHz

Detailed Pin Configuration

1. Drain (D)
2. Source (S)
3. Feedback (FB)
4. Ground (GND)
5. Control (CTL)
6. Output (OUT)
7. Bias (BIAS)

Functional Features

• Integrated 700 V MOSFET
• Built-in frequency jittering for reduced EMI
• Auto-restart protection for overvoltage and open-loop faults
• Cycle-by-cycle current limit
• Line undervoltage lockout with hysteresis
• Overtemperature protection
• Soft-start for controlled startup

Advantages

• High efficiency leading to energy savings
• Low standby power consumption
• Wide input voltage range for universal compatibility
• Compact package size for space-constrained applications
• Robust protection features for enhanced reliability

Disadvantages

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

Working Principles

The TOP242R-TL is an offline switcher that utilizes a flyback topology to convert the input AC voltage to a regulated DC output. It operates by controlling the switching of an integrated MOSFET, which allows energy transfer from the primary side to the secondary side of the transformer. The feedback pin monitors the output voltage and adjusts the duty cycle accordingly to maintain a stable output.

Detailed Application Field Plans

The TOP242R-TL is commonly used in various power management applications, including:

1. AC-DC Adapters
2. LED Lighting
3. Set-Top Boxes
4. Audio Amplifiers
5. Industrial Power Supplies

Detailed and Complete Alternative Models

1. TOP243R-TL
2. TOP244R-TL
3. TOP245R-TL
4. TOP246R-TL

These alternative models offer similar functionality and specifications, providing flexibility for different design requirements.

In conclusion, the TOP242R-TL is a highly efficient offline switcher designed for power management applications. With its compact package, wide input voltage range, and robust protection features, it offers advantages such as energy savings and reliability. However, it has limitations in terms of maximum output power and requires external components for a complete power supply design. Its working principle involves flyback topology and control of the integrated MOSFET. It finds applications in AC-DC adapters, LED lighting, set-top boxes, audio amplifiers, and industrial power supplies. Additionally, alternative models like TOP243R-TL, TOP244R-TL, TOP245R-TL, and TOP246R-TL provide options for different design needs.