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What is TOP224YN
The TOP224YN is a member of the second-generation TOPSwitch™-II family, known for its cost-effectiveness and improvements over its predecessor. This particular IC extends its power range from 100W to 150W for 100/115/230 VAC inputs and from 50W to 90W for 85-265 VAC universal inputs. It's designed to cater to various applications such as TVs, monitors, and audio amplifiers, leveraging the advantages of TOPSwitch technology.
What sets the TOP224YN apart are its enhancements that reduce sensitivity to board layout and line transients, making the design process more straightforward. Its standard 8L PDIP package option is particularly useful in lower power, high-efficiency applications, reducing costs while ensuring effective heat dissipation. This package cleverly uses six of its pins to transfer heat directly from the chip to the board, eliminating the need for a separate heat sink.
The TOP224YN integrates all the necessary functions for a switched-mode control system into a single three-terminal monolithic IC. This includes a power MOSFET, PWM controller, high-voltage start-up circuit, loop compensation, and fault protection circuitry. Overall, it's a versatile and efficient component designed to simplify circuit design and improve performance in various power supply applications.
TOP224YN Pinout
Pin configuration
|
Pin |
Description |
|
DRAIN |
Output MOSFET drain connection. Provides internal bias current during start-up via a switched high-voltage current source. Internal current sense point. |
|
CONTROL |
Error amplifier and feedback current input for duty cycle control. Internal shunt regulator connection for bias current during normal operation. Connection point for supply bypass, auto-restart, and compensation capacitor. |
|
SOURCE (YN) |
Output MOSFET source connection for high-voltage power return. Primary side circuit common and reference point. |
|
SOURCE (HV RTN) (P/GN) |
Output MOSFET source connection for high-voltage power return. Primary-side control circuit common and reference point. (P and GN package only) |
TOP224YN Specification
|
Parameter |
Specification |
|
Type |
SWITCHING REGULATOR |
|
Mounting Type |
Through Hole |
|
Package / Case |
TO-220-3 |
|
Number of Pins |
3 |
|
Operating Temperature |
-40°C~150°C TJ |
|
Packaging |
Tube |
|
Series |
TOPSwitch®-II |
|
Pbfree Code |
Yes |
|
Part Status |
Not For New Designs |
|
Moisture Sensitivity Level |
1 (Unlimited) |
|
ECCN Code |
EAR99 |
|
Terminal Finish |
Matte Tin (Sn) |
|
Max Power Dissipation |
75W |
|
Terminal Position |
SINGLE |
|
Frequency |
100kHz |
|
Number of Outputs |
1 |
|
Output Voltage |
700V |
|
Output Type |
Adjustable |
|
Max Supply Voltage |
36V |
|
Nominal Supply Current |
1.2mA |
|
Output Current |
150mA |
|
Topology |
Boost, Buck, Flyback, Forward |
|
Control Mode |
VOLTAGE-MODE |
|
Control Technique |
PULSE WIDTH MODULATION |
|
Nominal Input Voltage |
265V |
|
Internal Switch(s) |
Yes |
|
Fault Protection |
Current Limiting, Over Temperature |
|
Max Duty Cycle |
70% |
|
Max Supply Voltage (AC) |
265V |
|
Duty Cycle |
67% |
|
Output Isolation |
Isolated |
|
Min Supply Voltage (AC) |
85V |
Features of TOP224YN
- Low-cost, minimal component solution
- Cost competitiveness with 5W+ linear alternatives
- High efficiency, up to 90% AC/DC conversion
- Built-in auto-restart and current limiting
- Latching thermal shutdown for system protection
- Supports various topologies: Flyback, Forward, Boost, or Buck
- Compatible with primary or opto feedback
- Stable in both discontinuous and continuous conduction modes
- Source-connected tab reduces EMI
- Simplified circuitry and design tools for faster implementation
TOP224YN Applications
The applications of TOP224YN include,
- Consumer Electronics: Used in TVs, monitors, audio amplifiers, and other consumer electronic devices requiring efficient power supply solutions.
- Industrial Equipment: Employed in industrial machinery, control systems, and instrumentation due to its reliability and versatility.
- Telecommunications: Utilized in telecom infrastructure, base stations, and networking equipment for power management.
- LED Lighting: Used in LED drivers and lighting systems, benefiting from its high efficiency and compact design.
- Home Appliances: Integrated into power supplies for appliances like refrigerators, washing machines, and air conditioners.
- Power Adapters and Chargers: Found in various adapters and chargers for mobile devices, laptops, and other gadgets due to its efficiency and cost-effectiveness.
- Automotive: Applied in automotive electronics, providing power solutions for various vehicle systems.
- Renewable Energy: Used in power supplies for renewable energy systems such as solar inverters and wind turbines due to its efficiency and versatility.
TOP224YN Circuit Diagram
Here’s a video about Top224Y smps circuit diagram explained with practical,
In a typical flyback application utilizing a switch-mode power supply (SMPS) like the TOP224Y, several components come together to efficiently convert and regulate electrical power.
Typical flyback application.
Functional block diagram
This 4W standby supply, depicted in the following pictures, supports appliances needing standby functions even when the main power is off. It utilizes a 5V secondary for standby and a non-isolated 12V output for primary side operations, accommodating input from 100V to 380V DC (universal AC input range). Managed by the TOP221 in an 8-pin power DIP package, it regulates the 5V output via a Zener diode (VR1) and an optocoupler (U2), with C5 controlling loop compensation and restart frequency. It handles transformer spikes through R3, C1, and diode D1, providing a non-isolated 12V output using rectified bias winding (D3, C4). The isolated 5V output comes from rectification (D2) and filtering (C2, L1, C3).
4 W Standby Supply using 8 Lead PDIP
The photo below showcases a 12V, 20W flyback power supply using the TOP224P in an 8-lead PDIP package, compatible with 85-265VAC input. It leverages the package's heat transfer design, eliminating the need for a heatsink. The output voltage is determined by VR2, optocoupler U2, and R1. Components like D1, VR1 handle voltage spikes, while rectification and filtering (D2, C2, L1, C3) create the 12V output. C5 filters internal MOSFET spikes, aiding in control loop compensation and auto-restart frequency setting, alongside R1 and R3.
20 W Universal Supply using 8 Lead PDIP
TOP224YN Equivalent Part
TOP221P, TOP225YN, TOPSwitch-GX series
TOP224YN Package
TOP224YN Datasheet PDF
Download TOP224YN datasheet pdf here>>
Manufacturer
The TOP224YN is a power integrated circuit manufactured by Power Integrations. It's commonly used in power supply applications, offering features like over-temperature protection, overvoltage protection, and more to ensure reliable power management.
Power Integrations is a pioneering semiconductor company specializing in high-voltage power conversion. They're known for developing innovative integrated circuits (ICs) used in power supplies and other energy-efficient applications. The company focuses on creating solutions that enhance energy efficiency, reliability, and safety across various industries.
Their ICs, such as the TOPSwitch and other series like LinkSwitch, TinySwitch, and InnoSwitch, are widely adopted in power supply designs due to their high performance, integration of multiple functions, and built-in safety features. These ICs cater to diverse markets including consumer electronics, industrial, automotive, and renewable energy systems.
One of Power Integrations' standout features is their focus on green technologies. Their products are engineered to meet stringent energy efficiency standards and reduce standby power consumption, aligning with global energy-saving initiatives.
Moreover, Power Integrations promotes the use of gallium nitride (GaN) technology in power conversion, aiming to further enhance efficiency and reduce the size of power supplies. GaN-based solutions offer advantages in high-frequency operation and power density, making them appealing for next-generation power applications.
Overall, Power Integrations remains a key player in the power electronics industry, continuously innovating to meet the growing demands for energy-efficient and reliable power solutions across various sectors.
FAQ
-
Are there any design considerations when using the TOP224YN?
Proper layout and component selection are critical for reliable operation and performance. Following the manufacturer's recommended application notes and guidelines is essential.
-
What are the advantages of using the TOP224YN in power supply designs?
It simplifies the design of offline power supplies, offering built-in protections, high-voltage startup, and integration of essential functions, reducing the need for external components.
-
Can the TOP224YN be used in flyback converter applications?
Yes, it is suitable for use in flyback converter designs, often used in isolated power supply applications.
-
What is the pin configuration of the TOP224YN?
The TOP224YN comes in a PDIP-8 or SOP-8 package. The pinout includes pins for input voltage, ground, feedback, output voltage, and other control and protection features.
-
What is the maximum power capability of the TOP224YN?
The power capability depends on the external components used and the application circuit, but the TOP224YN can handle power levels typically up to a few watts.
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