PI3301-21-LGIZ

Voltage - Output 2:	--
Supplier Device Package:	123-LGA (14x10)
Size / Dimension:	0.55" L x 0.39" W x 0.10" H (14.0mm x 10.0mm x 2.6mm)
Package / Case:	123-BLGA Module
Mounting Type:	Surface Mount
Efficiency:	92.2%
Operating Temperature:	-40°C ~ 125°C
Features:	Remote On/Off, OCP, OTP, OVP, SCP, UVLO
Applications:	ITE (Commercial)
Current - Output (Max):	15A
Voltage - Output 3:	--
Series:	Cool-Power®
Voltage - Output 1:	3.3V
Voltage - Input (Max):	36V
Voltage - Input (Min):	8V
Number of Outputs:	1
Type:	Non-Isolated PoL Module, Digital
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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DC DC converters, also known as DC-to-DC converters, are devices used in electronics to convert electricity from the direct current (DC) of one voltage to a different voltage of direct current. The PI3301-21-LGiz is a fixed ratio step-down (down converters) DC DC converter. This article will provide an overview of the application field and working principle of the PI3301-21-LGIZ.ApplicationsThe PI3301-21-LGIZ features a fixed-ratio reduced switching frequency, making it convenient for applications where space is of particular importance. Its feature set allows it to be used in various different forms, including in automotive, avionics and aerospace applications. In automotive, it is used to convert varying vehicle battery voltages into a constant 12v which is used to power the vehicle’s auxiliary and secondary electronics.In avionics, it’s used to provide power to various avionics equipment, including transponders, navigation, communication and standby computers. In aerospace applications, the unit is often used in power systems that require enhanced isolation levels and fault protection.Working PrincipleThe PI3301-21-LGIZ makes use of a buck switching topology, a form of switching converter. This buck topology uses a single transistor as a switch, along with a magnetising inductor and a couple of capacitors and a flyback transformer. As a result, it is able to provide isolation from the input voltage and reduce the size of the switching circuit, which helps to increase efficiency.The switching transistor cycles on and off to create a pulse width modulation of the input voltage. This pulse width modulation is controlled by a feedback circuit which regulates the output voltage. It is based on the variation of the voltage across the inductor , which then results in the output voltage having a nearly constant magnitude.The output can be further set according to the user’s preference and can either be set for constant voltage or constant current operation. The PI3301-21-LGIZ is also capable of operating in discontinuous conduction mode, where the output current is detected to decrease to zero. This typically allows for higher output voltages and a higher power efficiency rating.In summary, the PI3301-21-LGIZ is a fixed ratio step-down DC DC converter. It is suitable for a range of different applications, which require a power supply of different voltages, including automotive, avionics and aerospace. The device uses a switching topology, which consists of a single transistor, inductor, capacitors and a flyback transformer. This helps provide isolation from the input voltage, as well as reducing the size of the switching circuit and increasing the efficiency of the unit. The output can either be set based on either constant voltage or constant current operation, with the option of operating in discontinuous conduction mode for higher output voltages.

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