TOP245P

Duty Cycle:	66.5%
Mounting Type:	Through Hole
Supplier Device Package:	DIP-8B
Package / Case:	8-DIP (0.300", 7.62mm), 7 Leads
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	Frequency Control
Fault Protection:	Current Limiting, Over Temperature, Over Voltage
Power (Watts):	30W
Frequency - Switching:	66kHz ~ 132kHz
Series:	TOPSwitch®-GX
Voltage - Supply (Vcc/Vdd):	--
Topology:	Flyback
Voltage - Breakdown:	700V
Internal Switch(s):	Yes
Output Isolation:	Isolated
Part Status:	Obsolete
Packaging:	Tube

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PMIC - AC DC Converters, Offline Switchers

The TOP245P AC/DC converter and offline switcher (TOP245P) is an integrated circuit developed by power semiconductor company Power Integrations for use in commercial, industrial, and home electrical equipment. It has the unique characteristics of offering both AC and DC power in a single package. It offers low output voltage and high efficiency at low cost.The TOP245P is a primary regulator, which requires an external transformer to reduce the voltage to the specified output level. The converter circuit is made up of two power MOSFETs with an onboard high voltage sense circuit. A two-stage linear regulator provides the desired output voltage.The input voltage range of the TOP245P is 125 V to 250 V AC, and the output voltage range is 3.3 V to 50 V. It has a maximum current of 8 A. The device can switch up to 400 kHz, and its power conversion efficiency is up to 92%.To control the switching times, the TOP245P has an overcurrent protection circuit, a short circuit protection circuit, and a cycle-by-cycle current limit.The TOP245P has a unified passive components package, with a built-in shield transformer to reduce EMI and electrical interference. It also features a device temperature monitor that issues a warning when the temperature rises too high.The TOP245P is a cost-effective solution for applications including AC/DC power supplies, off-line adapter, laptop power supplies, uninterruptible power supplies (UPS), telecom switching systems, home appliances, consumer electronics, etc.The work principle of the device is very simple. When the input voltage is applied, the two sense MOSFETs establish the topology of the converter. The two-stage linear regulator further lowers the voltage to the desired output voltage.The TOP245P has protection from short-circuiting, overcurrent protection, and phase-shift control which prevents the output from overloading. The operating frequency of the device is programmed by the user.In conclusion, the TOP245P is a highly efficient, cost-effective AC/DC power supply and off-line switch. It is ideal for a variety of applications across commercial, industrial and home settings. Its low cost and high efficiency make it perfect for many different applications, including AC/DC power supplies, off-line adapter, laptop power supplies, uninterruptible power supplies (UPS), telecom switching systems, home appliances, consumer electronics, etc.

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