TOP245Y

Duty Cycle:	66.5%
Mounting Type:	Through Hole
Supplier Device Package:	TO-220-7C
Package / Case:	TO-220-7 (Formed Leads), 6 Leads
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	Frequency Control
Fault Protection:	Current Limiting, Over Temperature, Over Voltage
Power (Watts):	85W
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Part Status:	Obsolete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: TOP245Y Application Field and Working Principle

The TOP245Y is a high voltage integrated Power Management IC (PMIC) designed for use in AC/DC or offline switchers, especially in power supplies up to 330W. It is used to regulate and monitor various operating conditions in various types of power electronics, such as AC/DC converters and offline switchers. It is an integrated PMIC that has a wide range of features, including a high voltage MOSFET with overvoltage protection and an overcurrent shutdown, as well as current and voltage regulation.

Applications

The TOP245Y is designed for use in a variety of applications, including in AC/DC converters and offline switchers. These applications include:

• Power supplies up to 330W
• Switched-mode power supplies (SMPS)
• AC-DC converters and adapters
• DC-DC converters and adapters
• Offline power supplies and mobile power sources
• Adapter, charger and power supply modules
• Medical, industrial and consumer electronics

The TOP245Y is also suitable for a variety of applications in automotive and industrial applications, including:

• Automotive, transportation and solar inverters
• DC/DC converter modules
• Adaptive and unregulated chargers
• DC/DC high-side controllers
• LED drivers

Features

The TOP245Y has a range of features that make it suitable for use in a variety of applications. These features include:

• High voltage MOSFET – The TOP245Y provides a high-voltage MOSFET that allows the device to operate in a variety of switching applications. It has a maximum voltage rating of 500V and is suitable for applications up to 330W.
• Overvoltage protection – The TOP245Y features overvoltage protection that can be enabled or disabled as required. When enabled, the device will detect and protect against any output voltage exceeding a predetermined threshold.
• Overcurrent shutdown – The device also features an overcurrent shutdown, which is designed to protect the device from any excessive current loads. An external resistor is used to set the trip level for overcurrent protection.
• Current and voltage regulation – The TOP245Y features both current and voltage regulation, which allows for precise control of the power device. This is used to ensure that the output voltage remains within tolerance, even when load and line variations occur.

Working Principle

The TOP245Y works by regulating the output voltage and current of a power device using a combination of voltage regulation and current regulation. When the device is powered on, the output current is sensed and compared to a predetermined setpoint. If the measured current exceeds the setpoint, the device increases the output voltage to reduce the current and bring it back to the setpoint.The TOP245Y also has a high-voltage MOSFET, which can be used to switch on and off the power device. When the device is switched on, the switching frequency is set by an internal oscillator. Depending on the application and the output power requirements, the switching frequency can range from 10 kHz up to 600 kHz. The device also has a protection circuit designed to protect the device from any overvoltage or overcurrent conditions. In summary, the TOP245Y is a high power, high voltage integrated Power Management IC designed for use in AC/DC and offline switchers. It is suitable for a variety of applications, such as power supplies, DC/DC converters, LED drivers and more. It has a wide range of features, including a high voltage MOSFET, overvoltage protection, overcurrent shutdown and current/voltage regulation. It also works by regulating and controlling the output voltage and current of the power device, using a combination of voltage and current regulation.

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