BD9045FV-E2

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Output Type:	Transistor Driver
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Number of Outputs:	2
Output Phases:	1
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 18 V
Frequency - Switching:	200kHz ~ 750kHz
Duty Cycle (Max):	--
Synchronous Rectifier:	Yes
Clock Sync:	No
Serial Interfaces:	--
Control Features:	Enable, Frequency Control, Soft Start
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	28-LSSOP (0.220", 5.60mm Width)
Supplier Device Package:	28-SSOPB
Base Part Number:	BD9045

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Introduction

The BD9045FV-E2 is a DC/DC Switching Controller designed to convert any voltage at a wide range of operating conditions with high accuracy and fast response time. Utilizing its integrated features such as low voltage drop, low ripple noise and short-circuit protection, the BD9045FV-E2 is ideal for a variety of automotive, industrial and consumer applications. This article will discuss the application field and working principles of the BD9045FV-E2.

Application Field

The BD9045FV-E2 is a highly efficient DC-DC switching controller that provides the foundation for a wide variety of voltage regulation needs. The BD9045FV-E2 is suitable for applications such as buck converters, dc-dc boost converters, and buck-boost converters. This power conversion can be used in automotive, industrial and consumer applications such as mobile phone chargers, battery-powered devices, and laptop chargers.The BD9045FV-E2 is also suitable for applications requiring fast response times and low voltage/current drops. The BD9045FV-E2 has an integrated short circuit protection and significantly reduces costs by enabling a single-chip solution. The BD9045FV-E2 is also equipped with protection features such as over-current protection and over-voltage protection.

Working Principle

The BD9045FV-E2 is a DC-DC switching controller which operates by modulating the on/off frequency of a switch to regulate the output voltage. This switching rate is determined by both the input voltage and output voltage.The BD9045FV-E2 utilizes pulse width modulation (PWM) to control the switching frequency and regulation of output voltage. When the input voltage is greater than the output voltage, the BD9045FV-E2 will increase the frequency to avoid overshoots and perform fast dynamic voltage regulation. When the input voltage is lower than the output voltage, the BD9045FV-E2 will decrease the frequency to avoid overshoots and maintain proper output regulation.The BD9045FV-E2 also includes an array of protection features such as over-voltage protection, over-temperature protection, over-current protection and short-circuit protection for added safety and performance.

Conclusion

The BD9045FV-E2 is a highly efficient DC-DC switching controller designed for a wide range of applications. It provides accurate and fast regulation of output voltage and features integrated protection features such as over-voltage and over-current protection. Its integrated features and short-circuit protection make the BD9045FV-E2 an ideal choice for automotive, industrial and consumer applications.

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