AXH003A0X

Current - Output (Max):	3A
Control Features:	Enable, Active Low
Size / Dimension:	0.90" L x 0.26" W x 0.40" H (22.9mm x 6.6mm x 10.2mm)
Package / Case:	5-SIP Module
Mounting Type:	Through Hole
Efficiency:	94%
Operating Temperature:	-40°C ~ 85°C
Features:	Remote On/Off, OCP, OTP, UVLO
Applications:	ITE (Commercial)
Power (Watts):	10W
Series:	Austin MiniLynx™
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	0.8 ~ 3.6 V
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.4V
Number of Outputs:	1
Type:	Non-Isolated PoL Module
Part Status:	Obsolete
Packaging:	Bulk

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DC-DC converters are widely used in modern industry, particularly in system designs that require a more efficient power conversion. The AXH003A0X DC-DC converter is one such example of an efficient and reliable power supply solution. It provides the high voltage levels and accurate power required for a variety of modern applications, and its wide range of input and output voltages makes it appropriate for most any design requirement. As such, this article will first provide a brief overview of the AXH003A0X’s applications and then explain its working principle.

Firstly, the AXH003A0X is most suitably applied to components with high power requirements such as Peltier cooling elements, communications and telecom equipment, and high-end industrial processes. Due to its stable, low fluctuations in the output current, and its output voltage’s high accuracy, the AXH003A0X is able to handle sensitive electronic circuits and components often found in the aforementioned applications. Moreover, its wide input voltage range and its input protection make it suitable for designs with a variety of hostile environment factors, such as shock, vibration, or varying temperatures.

Secondly, the AXH003A0X is a general purpose DC-DC converter which utilizes a buck-converter topology to convert a higher DC voltage to a lower DC voltage, while also simultaneously providing a constant-current output. It converts a direct current or alternating current (DC) input from an external supply into a direct current set to a lower or higher constant voltage level. This is accomplished by an arrangement of various components including a transformer, rectifier, diode, transformer, buck converter, and an integrated circuit controller.

The transformer, which is the component that enables the step-down voltage conversion, comprises a primary coil and a secondary coil separated by an insulator. The primary coil receives a DC voltage from the external supply which is then converted into an alternating current. This current is passed through the secondary coil, which inductively reduces the AC voltage level and provides isolated output power. The rectifier then converts the AC voltage output from the transformer to a DC voltage having a defined voltage level.

This DC voltage is then used to control the buck-converter, which consists of three main components: a power transistor, an integrated circuit, and an inductor. The power transistor is responsible for controlling the current flow from the input to the output of the system, while the integrated circuit regulates this current, ensuring an accurate output voltage level is achieved. Finally, the inductor then filters the output voltage ensuring a smooth DC surface voltage is provided.

In addition to this, the AXH003A0X DC-DC converter uses various methods to regulate the current output. For example, pulse-width modulation (PWM) is one method used, whereby a series of on/off cycles are modulated to smooth the current supply and maintain a constant output voltage. The second method is current-mode control which employs a third-party sensing wire to measure the current and then modulate the frequency of the cycle to ensure the correct level of output voltage is provided.

Overall, the AXH003A0X DC-DC converter is an efficient and reliable system designed for a variety of applications, especially those requiring a highly precise output voltage. Its wide input range and advanced regulating techniques provide it with the versatility to suit almost any design need. Furthermore, its simple and robust architecture ensure its long working life and its safety for the components that it is connected to.

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