MAX15026BATD+T

Frequency - Switching:	200kHz ~ 2MHz
Base Part Number:	MAX15026
Supplier Device Package:	14-TDFN-EP (3x3)
Package / Case:	14-WFDFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Current Limit, Enable, Frequency Control, Power Good
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	88%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 28 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The MAX15026BATD+T is an advanced power monitor and DC–DC controller IC from Maxim Integrated. It is part of Maxim’s T-Series of power monitoring and DC-DC switching controllers and is ideal for high-performance, multi-phase power monitoring and control. The MAX15026BATD+T features a single-voltage input supply and provides intelligent control of up to 8 phases of buck regulators, and the maximum switchable current is 127A. This device provides full support for both current sensing and voltage sensing in power delivery applications, such as notebooks and computing for both stationary and mobile applications.

Features

This device offers several features to support a wide variety of applications, including:1. Wide 5.5 V to 30 V voltage range with an operating temperature range from -40 °C to 125 °C.2. Adjustable switching frequency up to 5 MHz.3. 2-wire or 4-wire fan-speed control.4. Programmable under-voltage lockout (UVLO) threshold.5. Programmable over-voltage protection.6. Clock-synchronizable switching frequency.7. Programmable soft-start.8. Programmable OCP/UVP protection.9. Built-in reverse voltage protection.

Applications

The MAX15026BATD+T DC–DC controller IC is designed to meet the increasing power efficiency and scalability needs of a wide range of applications. Some of the common applications include: 1. Notebooks and computing systems.2. High-end graphics cards.3. Mobile and stationary telecom, computing and embedded systems.4. Industrial control systems and motor drives.5. Server, storage and data center systems.

Working Principle

The primary function of the MAX15026BATD+T is to monitor and control the on-state and off-state currents of up to 8 phases of synchronous and non-synchronous buck regulators. The device monitors the voltage and current at the output of the buck regulators and turns each phase of the buck regulator on and off via a high-speed, low-threshold 4-organization Digital to Analog Converter (DAC). The DAC output is then fed to the appropriate gate drivers which switch the buck regulator’s power devices at a rate determined by the configured switching frequency.The MAX15026BATD+T also features integrated line and load regulation. The user is able to configure the minimum on-time and phase current via pin settings. The device is able to detect the output voltage drops and phase current drops below a predetermined thresholds and trigger the appropriate actions.Furthermore, the device features a programmable Under-Voltage Lockout (UVLO) threshold, over-voltage protection, soft start, programmable OCP/UVP protection, clock-synchronizable switching frequency and 2-wire or 4-wire fan-speed control. All these features ensure reliable operation and performance.

Conclusion

The MAX15026BATD+T is an advanced power monitor and DC–DC controller IC from Maxim Integrated. It provides full support for both current sensing and voltage sensing in power delivery applications and is suitable for a wide range of applications such as notebooks and computing, high-end graphics cards, mobile and stationary telecom, computing, industrial control systems and motor drives, server, storage and data center systems. The device features a wide voltage range, adjustable switching frequency, integrated line and load regulation and programmable features like UVLO, over-voltage protection, soft start, clock-synchronizable switching frequency and fan-speed control.

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