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Kintex-7 series power module

Kintex-7 Series Power Module

Overview

This fully tested reference design provides a complete power-supply solution for powering a typical Xilinx Kintex-7 series field-programmable gate array (FPGA) using Maxim's power-supply solutions. The Kintex-7 (7K325T FPGA application) requires eight distinct power supply rails as follows:

FPGA Rail	Input Voltage	Output Voltage	Current	Maxim Solution
Design Description
VCCINT, VCCBRAM	12V	1V	6A	MAX8686
VCCAUX, VCCAUX_IO, VCCO, VCCADC, MGTAVCCAUX	12V	1.8V	6A	MAX8686
MGTAVCC	12V	1V	6A	MAX8686
VCC0	12V	3.3V	8A	MAX8686
VCC0	12V	2.5V	8A	MAX8686
VCC0	12V	1.5V/1.35V	4A	MAX8654
MGTAVTT, MGTAVTTRCAL	12V	1.2V	4A	MAX8654
VCCAUX_IO	12V	2V	2A	MAX15041

This reference design provides the required eight power rails using five MAX8686 synchronous pulse-width modulation (PWM) step-down regulators, two MAX8654 high-efficiency switching regulators, and the MAX15041 low-cost synchronous DC-DC converter with internal switches. These devices can be sequenced at power-up, as indicated in Figure 1.

Figure 1. Block diagram of the Kintex 7-power module.

Documentation

Application Note

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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