TNY263G

Duty Cycle:	65%
Mounting Type:	Surface Mount
Supplier Device Package:	SMD-8B
Package / Case:	8-SMD (7 Leads), Gull Wing
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	EN
Fault Protection:	Current Limiting, Open Loop, Over Temperature, Short Circuit
Power (Watts):	7.5W
Frequency - Switching:	132kHz
Series:	TinySwitch®-II
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Part Status:	Obsolete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 TNY263G is an offline switcher power integrated circuit (PMIC) designed for efficient operation using any universal input voltage. It is designed to be able to handle the universal AC input voltage range from 100 V to 305 V while providing a regulated output voltage and current. The output voltage can be selected between 9.6 V and 24 V with a power rating up to 6 W. This PMIC can be used in a variety of applications such as a printer, a set-top box, or even as a wall adapter.

Application Field

This PMIC is used in cost effective applications such as low power printers, set-top boxes, computers, networking equipment, personal electronics, and other applications that require an efficient and reliable offline switcher power solution. The TNY263G is well suited for applications that require high efficiency, low standby power consumption, and the ability to work with universal input voltages. It is also capable of operating in various temperature environments ranging from 0°C~85°C.

Working Principle

The TNY263G uses a primary-side regulation control scheme to regulate the output voltage and current. In this type of control scheme, no secondary-side feedback circuitry is necessary, allowing for a smaller and cheaper solution while increasing the efficiency of the converter. In addition, it uses active-clamp reset winding technology to reduce the power losses, improve the transient response, and allows for operating in the zero-voltage-switching boundary.The TNY263G incorporates a voltage reference, current limit operational amplifier, under-voltage protection, over-voltage protection, over-current protection, and output overvoltage protection as a protective feature. It also contains a Flyback control circuit to regulate the output voltage and current within an acceptable range, as well as reducing flux-switching losses and improving the electromagnetic interference (EMI) noise performance. In addition, it has a pulse frequency modulation (PFM) built in to reduce the power consumption during light and no-load applications. To ensure the converter’s safe operation, a line monitoring function and a thermal shutdown circuit are also provided.

Conclusion

The TNY263G is an offline switcher power integrated circuit (PMIC) that is designed for low power applications such as printers and set-top boxes. It uses a primary-side control scheme to regulate the output voltage and current while providing an efficient and reliable power solution. It comes equipped with protection features such as a voltage reference, current limit operational amplifier, under-voltage protection, over-voltage protection, over-current protection, output overvoltage protection, Flyback control circuit, line monitoring function, and thermal shutdown circuit.

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