R1S-1515/HP-R

Current - Output (Max):	66mA
Control Features:	--
Size / Dimension:	0.50" L x 0.42" W x 0.28" H (12.8mm x 10.7mm x 7.0mm)
Package / Case:	8-SMD Module, 5 Leads
Mounting Type:	Surface Mount
Efficiency:	82%
Operating Temperature:	-40°C ~ 100°C
Features:	SCP
Applications:	ITE (Commercial), Medical
Voltage - Isolation:	3kV
Power (Watts):	1W
Series:	ECONOLINE R1S
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	15V
Voltage - Input (Max):	16.5V
Voltage - Input (Min):	13.5V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The R1S-1515/HP-R is a modern DC-DC converter offering efficient power conversion with advanced protection and control features. It provides a high power density with low-loss synchronous rectification, advanced power-saving functions, wide input range, and overvoltage, overcurrent, and overtemperature protection. This allows it to be used in a variety of DC power systems, including automotive, industrial, and military applications.

Types of DC DC Converters

DC-DC converters can be divided into two broad categories: isolated and non-isolated. Isolated converters, such as the R1S-1515/HP-R, are used where the input and output voltages are not the same. This allows for galvanic isolation, meaning that electrical signals, noises, and interference are separated between the input and output side. Isolated converters are often used when a low voltage is required from a high voltage source, in applications such carriers in cameras, laptops, and phones.Non-isolated converters are typically used when the input and output voltages are the same and a voltage or current boost is required. They are simpler and less expensive than isolated converters, and are commonly used in smaller, low power applications such as battery charging.

The R1S-1515/HP-R

The R1S-1515/HP-R is a high power density, isolated DC-DC converter. It is a buck converter, meaning it boosts the output voltage when an input voltage is supplied. Its input voltage range is 4.5V-16V and its output voltage range is 0.469V-12V. Its maximum power is 15W and its switching frequency is 1 MHz.The R1S-1515/HP-R features synchronous rectification for low-loss conversion as well as input undervoltage lockout, output soft-start, overvoltage protection, overcurrent protection, and overtemperature protection. These features make it ideal for automotive, industrial, and military applications where reliable, efficient power conversion is required.

Working Principle

The R1S-1515/HP-R works by using a pulse-width modulation (PWM) control scheme to regulate the output voltage. An external reference voltage, typically 5V, is connected to the converter\'s non-inverting input. This reference voltage is then compared to the feedback voltage from the output terminal, and a signal is generated that is interpreted by the on-board oscillator.Based on this signal, the on-board oscillator will adjust the frequency and duty cycle of the pulses sent to the switching MOSFETs. These pulses will then control the amount of energy transferred from the input stage to the output stage, thus regulating the output voltage. The input undervoltage lockout also helps protect the converter from voltage drops and transients by disabling the output if the input voltage falls below a certain threshold.

Conclusion

The R1S-1515/HP-R is a high power density, isolated DC-DC converter designed for efficient power conversion in a variety of applications. Its advanced features, such as synchronous rectification, input undervoltage lockout, low-loss conversion, and fast transient response make it an ideal choice for automotive, industrial, and military applications. Its working principle is based on using a pulse-width modulation (PWM) control scheme to compare a reference voltage to the output voltage and adjust the frequency and duty cycle of the pulses sent to the switching MOSFETs accordingly. This ensures reliable, efficient power conversion with robust overvoltage, overcurrent, and overtemperature protection.

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