MCP1640T-I/MC

Voltage - Output (Min/Fixed):	2V
Base Part Number:	MCP1640
Supplier Device Package:	8-DFN (3x2)
Package / Case:	8-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	500kHz
Current - Output:	350mA
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	0.8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MCP1640T-I/MC Application Field and Working Principle

Introduction

The MCP1640T-I/MC, developed by Microchip Technology Inc., is designed as an Energy Efficient, Synchronous Buck converter for various DC-DC conversion applications. It is classified as a PMIC (Power Management Integrated Circuit), Voltage Regulators, and DC-DC Switching Regulators. This converter is available in a variety of packages and runs with input voltages ranging from 2.5 to 14V and can achieve an output power of up to 4.0 W.

Features

The MCP1640T-I/MC features many useful features which allow the converter to stand out from the competition. These features include a wide input range (2.5V to 14V), low quiescent current, adjustable switching frequency (200 kHz to 500 kHz), high efficiency (up to 95%), soft-start mode and cycle-skip mode. The converter also has a high switching frequency of up to 500 kHz, which allows for faster regulation time and higher current densities. A low ripple, fast transient response and small solution size are some of the other benefits. With its high efficiency, the converter can reduce power dissipation and heat loss by up to 15%.The MCP1640T-I/MC also features a Cycle-skip mode, which allows the converter to operate in a low current mode. This results in higher efficiency and reduced power consumption in light load applications.

Applications

The MCP1640T-I/MC’s wide input range makes it well-suited for a variety of applications, such as: • Portable DC-DC converters• Automotive power supplies• Battery-powered systems• Industrial control systems• Low power lighting systems and Electronics

Working Principle

The MCP1640T-I/MC is a synchronous buck converter, designed for high efficiency and low power dissipation. It works by using a switch to draw current from the input source, which is then rectified and filtered to produce a DC voltage. This DC voltage is then used to drive an inductor, supplying the output voltage with current. As the inductor increases the current, a diode is used to allow the current to flow, completing the cycle.This switch is then turned off, at which point, the inductor reverses its magnetic field, allowing the current to flow in the opposite direction, producing a pulsed output current. The rectified voltage is then filtered and regulated, providing the output voltage.The cycle is then repeated, allowing continuous current flow and maintaining constant output voltage at the desired level. The duty cycle (on-time) of the switch defines the output voltage. Higher duty cycles produce higher output voltages and vice versa.The current mode control of the MCP1640T-I/MC allows the converter to respond to input or load fluctuations quickly and accurately. The MCP1640T-I/MC\'s low ripple, fast transient response and high efficiencies are a result of the high switching frequency and current mode control.

Conclusion

In conclusion, the MCP1640T-I/MC is a highly efficient, synchronous buck converter designed for various DC-DC conversion applications. Its wide input range and high switching frequency designs make it well-suited for applications such as portable DC-DC converters, automotive power supplies, and low power lighting systems. Its Current mode control, Cycle-skip mode, and other features allow the converter to provide low ripple, high efficiency, and fast transient response.

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