TOP261LN
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: Tube/50 pieces
Specifications
- Input Voltage Range: 85VAC to 265VAC
- Output Power: Up to 25W
- Frequency Range: 50Hz to 60Hz
- Operating Temperature Range: -40°C to +125°C
- Maximum Duty Cycle: 75%
- Maximum Output Voltage: 700V
- Maximum Output Current: 1.5A
- Maximum Switching Frequency: 132kHz
Detailed Pin Configuration
- VCC: Power supply input
- GND: Ground reference
- FB: Feedback pin for voltage regulation
- COMP: Compensation pin for loop stability
- DRAIN: High-voltage power MOSFET drain connection
- SOURCE: High-voltage power MOSFET source connection
- CS: Current sense pin for overcurrent protection
Functional Features
- Primary-Side Regulation (PSR) control technique
- Built-in high-voltage power MOSFET
- Auto-restart protection for fault conditions
- Frequency jittering for reduced EMI emissions
- Over-temperature protection
- Overvoltage protection
- Undervoltage lockout
- Adjustable output voltage
Advantages and Disadvantages
Advantages: - High efficiency - Low standby power consumption - Wide input voltage range - Compact package size - Comprehensive protection features
Disadvantages: - Limited maximum output power - Requires external components for complete power supply design
Working Principles
The TOP261LN is a switching power supply controller that utilizes the PSR control technique. It operates by regulating the output voltage through feedback received from the FB pin. The controller generates a PWM signal that controls the high-voltage power MOSFET, allowing efficient power conversion. The frequency jittering feature reduces electromagnetic interference (EMI) emissions. The device also incorporates various protection mechanisms to ensure safe operation.
Detailed Application Field Plans
The TOP261LN is commonly used in various applications, including: - AC/DC power supplies - LED lighting systems - Consumer electronics - Industrial equipment - Telecommunications
Detailed and Complete Alternative Models
- TOP258PN: Similar specifications and features, different package (DIP-8)
- TOP249YN: Similar specifications and features, higher maximum output power (up to 50W)
- TOP255PN: Similar specifications and features, lower maximum output voltage (500V)
Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's datasheet for a complete list.
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技術ソリューションにおける TOP261LN の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of TOP261LN in technical solutions:
Q: What is TOP261LN? A: TOP261LN is a high-performance offline switcher IC (integrated circuit) designed for power supply applications.
Q: What are the key features of TOP261LN? A: The key features of TOP261LN include high efficiency, low standby power consumption, integrated protection features, and wide input voltage range.
Q: What are the typical applications of TOP261LN? A: TOP261LN is commonly used in various applications such as AC/DC power supplies, LED lighting, battery chargers, and industrial control systems.
Q: What is the maximum output power that TOP261LN can handle? A: TOP261LN can handle output power up to 65 watts, depending on the specific design and operating conditions.
Q: How does TOP261LN achieve high efficiency? A: TOP261LN achieves high efficiency through its advanced control algorithms, low-loss MOSFET technology, and optimized power management techniques.
Q: Does TOP261LN have built-in protection features? A: Yes, TOP261LN incorporates various protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown protection.
Q: Can TOP261LN operate with a wide range of input voltages? A: Yes, TOP261LN has a wide input voltage range of typically 85VAC to 265VAC, making it suitable for global applications.
Q: Is TOP261LN compatible with both flyback and forward converter topologies? A: Yes, TOP261LN is compatible with both flyback and forward converter topologies, providing flexibility in design choices.
Q: Does TOP261LN require external components for operation? A: Yes, TOP261LN requires a few external components such as an input filter, output rectifier, and feedback network for proper operation.
Q: Are there any reference designs or application notes available for TOP261LN? A: Yes, the manufacturer of TOP261LN provides reference designs and application notes that can help designers in implementing the IC effectively in their technical solutions.
Please note that the answers provided here are general and may vary depending on specific design requirements and operating conditions.