Allicdata Part #: | 596-1321-5-ND |
Manufacturer Part#: |
TOP252EG |
Price: | $ 0.83 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Power Integrations |
Short Description: | IC OFFLINE SWIT PROG OVP 7ESIP |
More Detail: | Converter Offline Flyback Topology 66kHz, 132kHz e... |
DataSheet: | TOP252EG Datasheet/PDF |
Quantity: | 1000 |
432 +: | $ 0.75084 |
Duty Cycle: | 78% |
Mounting Type: | Through Hole |
Supplier Device Package: | eSIP-7C |
Package / Case: | 7-SIP, 6 Leads, Exposed Pad, Formed Leads |
Operating Temperature: | -40°C ~ 150°C (TJ) |
Control Features: | -- |
Fault Protection: | Current Limiting, Over Temperature, Over Voltage |
Power (Watts): | 21W |
Frequency - Switching: | 66kHz, 132kHz |
Series: | TOPSwitch®-HX |
Voltage - Supply (Vcc/Vdd): | -- |
Topology: | Flyback |
Voltage - Breakdown: | 700V |
Internal Switch(s): | Yes |
Output Isolation: | Isolated |
Part Status: | Active |
Packaging: | Tube |
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TOP252EG is a high performance off-line switcher integrated circuit with high efficiency, low component count and low component cost. It is intended for universal non-isolated power supply designs in both fixed and adjustable output voltage applications. TOP252EG is part of a family of off-line switchers from Power Integrations designed to minimize component cost while maximizing performance and reliability.
The TOP252EG integrates an N-channel MOSFET power switch and an advanced peak current-mode PWM controller in a 4mm by 5mm package. It provides protection features such as thermal shutdown, output overvoltage protection, and adjustable constant frequency current-mode control. The TOP252EG can be used in both self-oscillating flyback and quasi-resonant flyback configurations. The TOP252EG is suitable for a wide range of AC/DC power supplies, such as chargers, adapters, and POE (Power Over Ethernet).
The working principle of TOP252EG is quite simple and straightforward; it works by converting the AC mains power into DC power by rectifying it, which means that the voltage pulses obtained by rectification are full-wave and the current pulses obtained are half-wave. Once the voltage and current are in DC form, they can be converted to the required output voltage by a switching regulator circuit, called a flyback converter. The flyback converter works by repeatedly switching on and off an N-channel MOSFET, which is integrated in the TOP252EG, at a specific frequency, in order to store energy in the form of an inductive flyback, and unwind and discharge it at the required output voltage. This ensures a smooth output voltage with minimal ripples and noise, as well as efficient power conversion.
The TOP252EG, being part of a family of off-line switchers from Power Integrations, has a very low component count and cost, making it ideal for use in universal non-isolated power supplies. It provides protection features such as thermal shutdown, output overvoltage protection and adjustable constant frequency current-mode control, and is suitable for a wide range of AC/DC power supplies such as chargers and adapters. In addition, it has a very simple and straightforward working principle, making it easy to use and maintain.
The specific data is subject to PDF, and the above content is for reference
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