QHL750300S15

Current - Output (Max):	50A
Supplier Device Package:	Full Brick
Size / Dimension:	4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
Package / Case:	Full Brick
Mounting Type:	Through Hole
Efficiency:	89%
Operating Temperature:	-40°C ~ 85°C
Features:	Remote On/Off, OCP, OTP, OVP, SCP, UVLO
Applications:	ITE (Commercial)
Voltage - Isolation:	3kV
Power (Watts):	750W
Series:	QHL750
Voltage - Output 4:	--
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	15V
Voltage - Input (Max):	425V
Voltage - Input (Min):	200V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active

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DC DC Converters: QHL750300S15 Application Field and Working Principle

DC-DC converters refer to electronic devices that convert direct current (DC) from one voltage level to another. The QHL750300S15 DC-DC converter is a high power, non-isolated step-down converter designed to provide regulated voltage levels from a wide input range. It is capable of providing up to an impressive 150 Amps of output current.This high power, synchronous step-down DC-DC converter is widely used in various types of applications, such as automotive, LED lighting, battery management, test and measurement and industrial applications. It is an ideal choice for power conversion applications that require high-current output capacity and reliable performance.The QHL750300S15 employs advanced super-junction technology and is equipped with several features, including programmable current limit, soft start, and over temperature protection. In order to ensure efficient and reliable power conversion, the input voltage range can be adjusted over a large range, and a regulated output voltage can be achieved by controlling the on-time of the integrated MOSFET switch.The operating principle of the QHL750300S15 DC-DC converter is based on a voltage source inverter (VSI). The VSI is a type of switched-mode power supply (SMPS) that enables efficient conversion between a DC input voltage and an AC output voltage. The SMPS topology used in the QHL750300S15 DC-DC converter includes an input rectifier, an energy storage inductor, an output filter, and a pulse width modulation (PWM) controller.The converter operates by converting the input voltage to an AC voltage across the inductor. The PWM controller then switches the MOSFETs on and off to generate high frequency pulses, which are filtered by the output filter to produce a DC output voltage. The pulse width is used to control the output voltage, and hence, the input-output conversion is achieved.The key features of the QHL750300S15 DC-DC converter are its wide input voltage range, adjustable output voltage, high efficiency of up to 95%, and low EMI levels. Furthermore, since the device has no output ripple voltage, it is capable of providing stable power output with minimal fluctuations across the output voltage range.In conclusion, the QHL750300S15 DC-DC converter is an impressive device that provides reliable and efficient power conversion. The adjustable input voltage range, adjustable output voltage and wide range of current capacity make it an ideal choice for a variety of applications. Its advanced features and performance can effectively reduce system size and cost while increasing overall system reliability.

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