TOP255PN

Duty Cycle:	78%
Mounting Type:	Through Hole
Supplier Device Package:	DIP-8C
Package / Case:	8-DIP (0.300", 7.62mm), 7 Leads
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	--
Fault Protection:	Current Limiting, Over Temperature, Over Voltage
Power (Watts):	30W
Frequency - Switching:	66kHz
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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PMIC - AC DC Converters, Offline Switchers

AC DC converters are widely applied in many areas, such as industrial control, appliances, computing equipment and medical instrument applications. When it comes to the AC DC power supply design, it is essential to select the right technology in order to ensure reliable and high efficiency performance. TOP255PN is one of the popular AC DC converters, working in the offline forward converter circuit. This article would discuss the application fields and working principle of TOP255PN.

Application Fields of TOP255PN

TOP255PN is made from the company Power Integrations and it is used in various applications. For example, it can be applied in the field of LED lighting, industrial appliances, telecommunications, IT equipment, healthcare equipment and home appliances. It is featured in its high efficiency, low power demage, small size and high performances.

Working Principle of TOP255PN

TOP255PN is an offline switcher that can be applied to a wide range of AC input voltages, for both AC and DC ports. It is a type of power supply overvoltage protection device. The schematic diagram below shows the operating principle of TOP255PN.The fundamental operation of TOP255PN is to convert AC input voltage to DC output, thereby providing efficient and reliable power servicing. The process of AC to DC conversion occurs as follows: first, TOP255PN rectifies AC voltage into DC voltage; then, a power switch turns on and off to switch the voltage through an inductor. The combination of the rectified voltage and the inductor\'s current creates power breaking and averaging, which results in a smoothed voltage output. All the components of the circuit influence each other in the process of energy conversion, and the presence of control logic makes the system adjustable.Another advantage of the chip is its built-in thermal shutdown protection. TOP255PN will shut down automatically when the temperature gets too high, but it will still keep going in a low temperature.Overall, TOP255PN can offer reliable and excellent performance for AC DC converters and offline switchers. It is applicable to various applications and its outstanding features, high efficiency and reliability make it a top choice for AC DC power supply design.

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