CBS2004828-F4

Current - Output (Max):	7.2A
Supplier Device Package:	Half Brick
Size / Dimension:	2.44" L x 2.34" W x 1.54" H (62.0mm x 59.5mm x 39.2mm)
Package / Case:	Half Brick
Mounting Type:	Through Hole
Efficiency:	88%
Operating Temperature:	-40°C ~ 100°C (With Derating)
Features:	Remote On/Off, OCP, OVP
Applications:	ITE (Commercial)
Voltage - Isolation:	1.5kV
Power (Watts):	202W
Series:	CBS
Voltage - Output 4:	--
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	28V
Voltage - Input (Max):	76V
Voltage - Input (Min):	36V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active

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DC DC Converters

DC-DC converters are electronic components that convert an input direct current (DC) into a different output DC voltage or current. They are widely used in a variety of applications, including aerospace, automotive, telecommunications, consumer electronics, renewable energy, and more. The CBS2004828-F4 is a type of non-isolated DC-DC converter, which utilizes an advanced switching circuit to convert a DC input voltage into a regulated DC output voltage. This converters feature low on-resistance, low no-load power consumption, and excellent efficiency.

CBS2004828-F4 Application Field

The CBS2004828-F4 DC-DC converter module is widely applicable in power supply circuits, such as in tablet computers, automotive applications, cameras, power bank, drones, medical equipment, telecommunications, and much more. It is especially effective when powering sensitive loads that require high precision voltage regulation.

CBS2004828-F4 Working Principle

The CBS2004828-F4 is based on a non-isolated, step-down DC-DC converter circuit. It uses an external power MOSFET and an external inductor to transform the input voltage. The switching operation of the MOSFET is driven by a control circuit, which will convert the input voltage to a desired regulated and adjustable output voltage.The whole circuit is composed of three parts, namely an INTVCC power supply, a regulating chip, and an external power MOSFET. The INTVCC charges the internal capacitance via a capacitor to ensure that the internal power supply is stable. The regulating chip consists of an oscillator, a comparator, a latch, a driver circuit, and a constant-current and over-protected circuit. The oscillator receives a rectangular wave from an external one-shot circuit and starts the switching operation by driving the comparator and the latch. The driver circuit then suppresses oscillation of the power MOSFET, while also meeting the demands for higher efficiency and lower EMI levels.Finally, the external power MOSFET converts the input voltage to the required voltage value based on the duty cycle of the input signal from the driver circuit. The switching of the power MOSFET will produce a continuous pulse signal, and the output of the power MOSFET will be an analog current with a smooth transition. The rectification and filtering of the output current will form the desired output voltage.

Conclusion

The CBS2004828-F4 is a non-isolated DC-DC converter with high efficiency and excellent output regulation that is capable of handling a wide range of input voltages. It is extensively used for a variety of applications such as medical equipment, cameras, power bank, tablets, automotive systems, and much more. Its Advanced switching circuit and low on-resistance allow for outstanding conversion performances.

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