TOP257YN
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 Regulator Controller
- Packaging/Quantity: Tube/50 pieces
Specifications
- Input Voltage Range: 85V to 265V AC
- Output Power: Up to 45W
- Frequency Range: 50Hz to 400Hz
- Operating Temperature Range: -40°C to +125°C
- Efficiency: Up to 90%
- Standby Power: Less than 100mW
Detailed Pin Configuration
- VCC: Supply voltage input
- FB: Feedback pin for output voltage regulation
- COMP: Compensation pin for loop stability
- CS: Current sense pin for current limit protection
- DRAIN: High-voltage power MOSFET drain connection
- SOURCE: High-voltage power MOSFET source connection
- GND: Ground reference
Functional Features
- Primary-Side Regulation (PSR) Control
- Auto-restart Protection
- Overload and Short-Circuit Protection
- Line and Load Regulation
- Soft Start and Frequency Jittering
- Built-in Thermal Shutdown
Advantages and Disadvantages
Advantages: - High efficiency leads to energy savings - Wide input voltage range allows for universal compatibility - Compact package size enables space-saving designs - Comprehensive protection features ensure system reliability
Disadvantages: - Requires external components for complete power supply design - Limited output power compared to higher-end models - Not suitable for high-frequency applications
Working Principles
The TOP257YN is a primary-side regulated switcher IC that utilizes the flyback topology to convert high-voltage AC input into low-voltage DC output. It operates by controlling the duty cycle of an internal power MOSFET to regulate the output voltage. The PSR control eliminates the need for an optocoupler, reducing cost and complexity. The IC also incorporates various protection mechanisms to safeguard against faults and ensure safe operation.
Detailed Application Field Plans
The TOP257YN is widely used in various applications, including but not limited to: - Power Adapters - LED Lighting - Set-Top Boxes - Audio/Video Equipment - Industrial Power Supplies
Detailed and Complete Alternative Models
- TOP258PN: Similar specifications and features, different package (DIP-8)
- TOP256EN: Higher output power capability, similar specifications and features
- TOP259GN: Lower standby power consumption, similar specifications and features
These alternative models provide flexibility in design and cater to specific application requirements.
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10 pirs û bersivên hevpar ên têkildarî sepana TOP257YN di çareseriyên teknîkî de navnîş bikin
Sure! Here are 10 common questions and answers related to the application of TOP257YN in technical solutions:
Q: What is TOP257YN?
- A: TOP257YN is a highly integrated offline switcher IC (integrated circuit) designed for low-power applications.
Q: What are the typical applications of TOP257YN?
- A: TOP257YN is commonly used in applications such as power supplies, LED lighting, battery chargers, and industrial control systems.
Q: What is the maximum input voltage supported by TOP257YN?
- A: The maximum input voltage supported by TOP257YN is typically around 265V AC.
Q: What is the maximum output power that can be achieved with TOP257YN?
- A: The maximum output power depends on the specific design and external components used, but it can typically reach up to 60W.
Q: Does TOP257YN require an external MOSFET?
- A: No, TOP257YN integrates a high-voltage power MOSFET internally, eliminating the need for an external MOSFET.
Q: Can TOP257YN operate in a wide range of input voltages?
- A: Yes, TOP257YN is designed to operate in a wide input voltage range, typically from 85V AC to 265V AC.
Q: Is TOP257YN suitable for flyback converter designs?
- A: Yes, TOP257YN is specifically designed for flyback converter topologies and provides excellent performance in such applications.
Q: Does TOP257YN have built-in protection features?
- A: Yes, TOP257YN incorporates various protection features like overvoltage protection (OVP), overload protection (OLP), and thermal shutdown.
Q: Can TOP257YN be used in high-temperature environments?
- A: Yes, TOP257YN has a wide operating temperature range and can operate reliably in high-temperature environments, typically up to 150°C.
Q: Are there any reference designs available for TOP257YN?
- A: Yes, the manufacturer of TOP257YN provides application notes and reference designs that can help in implementing the IC in various technical solutions.
Please note that the answers provided here are general and may vary depending on specific design considerations and requirements. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for accurate information.