Voltage - Output 3:	--
Approvals:	EN, IEC
Size / Dimension:	2.99" L x 1.24" W x 0.99" H (76.0mm x 31.5mm x 25.1mm)
Mounting Type:	Chassis Mount
Operating Temperature:	-40°C ~ 85°C
Efficiency:	89%
Applications:	--
Power (Watts):	20W
Current - Output (Max):	1.67A
Voltage - Output 4:	--
Series:	PYB20-T
Voltage - Output 2:	--
Voltage - Output 1:	12V
Number of Outputs:	1
Voltage - Input (Max):	75V
Voltage - Input (Min):	18V
Type:	Isolated
Part Status:	Active
Packaging:	Bulk

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DC DC Converters

Introduction

A DC to DC converter (also known as a DC-DC converter) is a type of electronic circuit which converts direct current (DC) from one source of DC to another. Generally, DC to DC converters are used to control voltage levels and are employed in a variety of applications, ranging from telecommunications to automotive components. DC to DC converters can be divided into three broad categories - step-down converters, step-up converters, and isolated converters.

PYB20-Q48-S12-H-T Application Field and Working Principle

The PYB20-Q48-S12-H-T is a step-down converter, which is used to reduce the voltage of the input power source to match the target device. It is an H-bridge type DC to DC converter, which is particularly suitable for applications in automotive electronics. The two main components of the circuit are a buck converter and an H-bridge driver.The buck converter is composed of an inductor, a diode, and a transistor, and operates by converting the voltage of the input power source into a lower voltage. In the buck converter, electrons are passed through the diode in one direction, during which time energy is stored in the inductor coil. When the transistor turns on, the stored energy is released back into the circuit as a voltage which is lower than the original input voltage. The H-bridge driver, meanwhile, is used to drive the buck converter and to control the direction of the current. An H-bridge driver is an electrical circuit which uses two transistors connected in parallel to control the direction of current flow. The two transistors, when connected in parallel, can be used to control the direction of the current by supplying the input voltage in different directions across the two transistors. The H-bridge driver of the PYB20-Q48-S12-H-T works by receiving an input voltage from the buck converter, and then controlling to two transistors in order to reverse the direction of the current. By repeatedly switching between the two transistors in rapid succession, the current direction can be managed. This is known as pulse-width modulation, and it allows the H-bridge driver to control the voltage and current of the buck converter so that it can output a consistent, reliable voltage level. The PYB20-Q48-S12-H-T is a commonly used DC to DC converter, particularly among automotive electronics applications. Due to its reliable performance, efficient operation, and compact size, the PYB20-Q48-S12-H-T can be used to power any electrical system which requires a consistent voltage supply.

Conclusion

DC to DC converters are essential components in automotive electronics and telecommunications applications. There are several types of DC to DC converters, including step-down converters, step-up converters, and isolated converters. The PYB20-Q48-S12-H-T is a step-down DC to DC converter which is particularly suitable for automotive electronics applications due to its efficient performance, reliable operation, and compact size.

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