X5083V8-2.7

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	--
Reset:	Active Low
Reset Timeout:	100 ms Minimum
Voltage - Threshold:	2.63V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	8-TSSOP
Base Part Number:	X5083

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Introduction

The X5083V8-2.7 is a polyphase pulse-width modulation (PWM) synchronous buck controller specifically designed for cascaded multiphase voltage regulation. It is optimized for applications such as advanced graphics cards, high speed networking equipment, and industrial applications such as data warehousing, telecommunications, and medical imaging. This advanced device integrates a variety of features to reduce external components resulting in a simplified and more reliable system design.

Application Fields

The X5083V8-2.7 is ideally suited for a variety of power supply design needs. It is designed to provide high resolution DC/DC regulation of large, high current loads of up to 12A, with efficiency greater than 85%. The device also offers protections against overload and over temperature conditions providing system safety and reliability. The device offers a mobile friendly Power-On Reset (POR)/Brown-out Reset (BOR) and programmable soft start and enable functions. The X5083V8-2.7 is the optimal device for low power, high efficiency multi-phase voltage regulation applications.

Working Principle

The X5083V8-2.7 integrates three independent PWM control and output stages into one device. This device features a 32-bit delta-sigma based voltage regulator with a programmable low voltage dropout (LVD) warning and shutdown/latchoff protection. The device is configured to operate in a synchronous buck, two-phase PWM mode, which provides a significant increase in conversion efficiency for large, high current, multi-phase applications. The X5083V8-2.7 detects the incoming supply voltage and adjusts the PWM frequency accordingly. It provides a 1V resolution control over the voltage adjust range of 1.00V to 3.50V, allowing for precision regulation of the supply voltage. The PWM controller can set the on-time of each phase in order to achieve optimal efficiency while staying within the thermal constraints. Once the voltage has been adjusted, bandgap technology is used to detect the output voltage and maintain a tight load regulation.

Features and Benefits

The X5083V8-2.7 provides a robust set of features and benefits. The integrated synchronous buck controllers provide high efficiency, even at lower load currents. The device also offers other benefits including:• Programmable switching frequency of up to 1MHz• On-chip voltage loop compensation with external offset adjustment• Multi-layer gate drive circuit to drive the power switches with minimal power losses• Accurate 1V resolution with protective overvoltage and undervoltage circuitry• on-chip soft-start and programmable enable• Fully integrated temperature monitoring circuitThe X5083V8-2.7 also has a variety of added assets to improve system design. For example, the device can be configured using a variety of external components for primary side, secondary side, and diode OR-ing operations. In addition, an on-board delay function can be used to ensure that the switching signals of different phases from the processor synchronize and are not skipped or delayed.

Conclusion

The X5083V8-2.7 is a valuable device for systems requiring high resolution voltage regulation with power savings. The integrated features and support for multiple operation scenarios make it an ideal choice for developers wishing to reduce component count and deliver efficient power control solutions. The X5083V8-2.7 is an essential component proper supervision of voltage levels, temperatures and other power related parameters.

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