NTA0505MEC-R

Current - Output (Max):	100mA, 100mA
Control Features:	--
Size / Dimension:	0.60" L x 0.30" W x 0.26" H (15.2mm x 7.6mm x 6.6mm)
Package / Case:	18-SMD Module, 10 Leads
Mounting Type:	Surface Mount
Efficiency:	80%
Operating Temperature:	-40°C ~ 85°C
Features:	--
Applications:	ITE (Commercial)
Voltage - Isolation:	1kV
Power (Watts):	1W
Series:	NTA
Voltage - Output 3:	--
Voltage - Output 2:	-5V
Voltage - Output 1:	5V
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	4.5V
Number of Outputs:	2
Type:	Isolated Module
Part Status:	Active
Packaging:	Tape & Reel (TR)

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DC-DC Converter –NTA0505MEC-R Application Field and Working Principle

DC-DC converters are electric power converters that convert one source of direct current voltage (DC) to another. DC-DC converters are widely used in many applications and devices, ranging from automotive accessories to solar power systems, and from portable electronic systems to large enterprise systems. The NTA0505MEC-R is a highly efficient non-isolated step-down DC-DC converter designed for various discrete and integrated applications. This paper aims to discuss the application fields and working principles of the NTA0505MEC-R.

Application Field

The NTA0505MEC-R is an ideal DC-DC converter for a wide range of applications, including but not limited to automotive, industrial, datacom, telecom, consumer electronics, and medical systems. Because of its high level of efficiency, it is also suitable for power conversion applications requiring very little power dissipation. Its features and specifications further enrich its application field.

Features

The NTA0505MEC-R features integrated FETs, current mode control, an adjustable switching frequency of up to 1MHz, and output voltage accuracies of ±2%. With its wide input range of 4.5V to 60V, it can be used in various applications from 5V to 36V. In addition, it has an integrated soft-start and an adjustable over-current limiting circuit. This allows for efficient and robust protection for the connected load. The NTA0505MEC-R has low ground current, a low quiescent current of 2mA, and high efficiency of up to 93%. It is further protected against short-circuit, over-temperature and over-voltage conditions. With its high level of integration, the NTA0505MEC-R is extremely small, measuring only 3.5 x 2.5 x 0.6mm, making it ideal for high density applications.

Specifications

The NTA0505MEC-R offers very high power density of up to 3.6W/mm³. It operates over a temperature range of -40 to +85°C and has a maximum output current of 1.5A. It is also guaranteed to maintain its designed characteristics over wide temperature and input voltage variations,and is capable of operating in either discontinuous or continuous conduction modes.

Working Principle

The NTA0505MEC-R adopts a synchronous rectification method to maximize the efficiency of the converter. This approach is based on the principle of a buck converter, with a High-side and a Low-side power transistor each with opposite active region. When the power switch is turned on, the high-side transistor will draw current from the input source, while the low-side transistor will draw current from the output load. This circuit operation creates an output voltage regulated at the desired level. In addition, an internal oscillator is used to trigger the operation of the power switches. This oscillator creates frequencies between 200 kHz up to 1MHz depending on the input voltage and regulation voltage requirements. The frequency of the oscillator is adjustable, allowing the NTA0505MEC-R to be fine-tuned for a wide range of applications.

Conclusion

The NTA0505MEC-R is a highly efficient and compact DC-DC converter suitable for many applications including automotive, industrial, datacom, telecom, consumer electronics, and medical systems. It features an adjustable switching frequency of up to 1MHz and an output voltage accuracy of ±2%, as well as integrated FETs, current mode control, an adjustable over-current limiting circuit, and a soft-start function. The NTA0505MEC-R also adopts a synchronous rectification method to maximize the efficiency of the converter.

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