Voltage - Output (Min/Fixed):	1.5V
Base Part Number:	ADP2102
Supplier Device Package:	8-LFCSP (3x3)
Package / Case:	8-VFDFN Exposed Pad, CSP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	3MHz
Current - Output:	600mA
Voltage - Output (Max):	1.88V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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ADP2102YCPZ-3-R7 Application Field and Working Principle

Introduction

The ADP2102YCPZ-3-R7 is a dual buck synchronous DC-DC step-down power converter, combining a buck-regulated power supply topology with industry-leading MOSFET technology. It operates from a 4.5 V to 36 V input voltage range, providing up to 6 A of continuous output current. The principal advantages of this product are no requirement of a heat sink and extremely low power consumption. Furthermore, this device can operate with a power efficiency of up to 95% with a very low output voltage range of 0.6 V to 5.0 V.

Features

ADP2102YCPZ-3-R7 has many features which makes it suitable for a wide range of applications in different fields. It has a wide input voltage range which makes it extremely suitable for isolated systems or for worst case conditions such as a dead short or overloaded line. Furthermore, it has an adjustable switching frequency from 300 kHz to 2.2 MHz, allowing for an optimized power supply design for all types of printed circuit boards (PCBs). On top of all this, the internal circuitry can handle an output power capability of up to 30 W with no additional circuitry.

Application Field

The ADP2102YCPZ-3-R7 is widely used in various applications with different requirements concerning output power, switching frequency, thermal output and power efficiency. This power converter is most commonly used in wireless communication systems such as sensor system, WLAN and WiMAX applications. Additionally, it can be used in car-power systems, LED backlighting and portable device applications.

Working Principle

The ADP2102YCPZ-3-R7 DC-DC step-down power converter uses a synchronous buck regulator topology to provide a regulated output voltage. Internally it consists of two independent switching regulators. Each regulator has two MOSFETs, an inductor and a capacitor which create an output from the input voltage. This is achieved by switching the MOSFETs rapidly on and off at a set duty cycle, creating a sinusoidal waveform at the output. The duty cycle of the MOSFETs is controlled by an internal pulse width modulation (PWM) controller which checks the difference between the output voltage and the reference voltage. Whenever the difference becomes too large, the duty cycle of the MOSFET drivers is adjusted to regulate the output voltage.

Conclusion

In conclusion, the ADP2102YCPZ-3-R7 is a commonly used DC-DC step-down power converter, distinguished by its high efficiency and its wide input voltage range. It is suitable for a wide range of applications including wireless communication systems, car-power systems, LED backlighting and portable device applications. It works by using an internal PWM controller which checks the difference between the output voltage and the reference voltage. Whenever the difference becomes too large, the duty cycle of the MOSFETs is adjusted in order to regulate the output voltage.

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