MAX1997ETJ+

Series:	--
Packaging:	Tube
Part Status:	Active
Applications:	Controller, TFT LCD
Voltage - Input:	2.7 V ~ 5.5 V
Number of Outputs:	5
Voltage - Output:	2.7 V ~ 13 V
Operating Temperature:	0°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	32-WFQFN Exposed Pad
Supplier Device Package:	32-TQFN-EP (5x5)
Base Part Number:	MAX1997

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Introduction

The MAX1997ETJ+ is a highly integrated single-phase high current power supply. It has been designed with a number of features that make it unique in its field. The chip includes an input synchronous rectification circuit, a bidirectional flyback converter, variable duty cycle control logic, dynamic on-time control, and a Phase-Locked Loop (PLL). These features make the MAX1997ETJ+ ideal for applications such as server, enterprise storage, and networking applications, where high current output is needed in a small package.

Application Field

The MAX1997ETJ+ is suitable for a wide range of applications. It can be used in computer power supplies, DC-DC converters, motor drive controllers, and uninterruptible power supplies (UPS). It is also suitable for power management in industrial, automotive and consumer applications. The chip offers a flexible solution for many applications, including high-end server power supplies, motor drive controllers, and power management systems.

Working Principle

The MAX1997ETJ+ operates using a synchronous rectification circuit, combined with the bidirectional flyback converter and variable duty cycle control logic. This allows the chip to provide a high power factor, low total harmonic distortion (THD), and optimal efficiency. When the chip is operating in power saving mode, the flyback converter is disconnected and the input synchronous rectification is disabled. This results in a low power mode with reduced power consumption. The power output is controlled using the on-time control and Phase-Locked Loop (PLL). The PLL adjusts the on-time of the power cycles to maintain the output voltage within a predefined voltage range.

Conclusion

The MAX1997ETJ+ is a highly integrated single-phase high current power supply, which is designed for a variety of applications. The chip includes an input synchronous rectification circuit, a bidirectional flyback converter, variable duty cycle control logic, and dynamic on-time control. This allows the chip to provide a high power factor, low total harmonic distortion, and optimal efficiency. The MAX1997ETJ+ is suitable for a wide range of applications, including computer power supplies, DC-DC converters, motor drive controllers, and uninterruptible power supplies (UPS). The chip is a flexible and efficient solution for power management in industrial, automotive and consumer applications.

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