Zc706 Board Power System; Ucd90120A Description; Lmz31500 And Lmz31700 Family Regulator Description - Xilinx ZC706 User Manual

ZC706 Board Power System

The ZC706 board hosts a power system based on the Texas Instruments (TI) UCD90120A
power supply sequencer and monitor, and the LMZ31500 and LMZ31700 family voltage
regulators.

UCD90120A Description

The UCD90120A is a 12-rail PMBus/I
The device integrates a 12-bit ADC for monitoring up to 12 power-supply voltage inputs.
Twenty-six GPIO pins can be used for power supply enables, power-on reset signals,
external interrupts, cascading, or other system functions. Twelve of these pins offer pulse
width modulation (PWM) functionality. Using these pins, the UCD90120A offers support for
margining and general purpose PWM functions.
The TI Fusion Digital Power™ designer software is provided for device configuration. This
PC-based graphical user interface (GUI) offers an intuitive interface for configuring, storing,
and monitoring all system operating parameters.

LMZ31500 and LMZ31700 Family Regulator Description

The LMZ31520 SIMPLE SWITCHER® power module is a step-down DC-DC solution capable
of driving up to 20A load. The LMZ31520 module can accept an input voltage rail between
3V and 14.5V and deliver an adjustable and highly accurate output voltage as low as 0.6V.
The LMZ31506 SIMPLE SWITCHER® power module is a step-down DC-DC solution capable
of driving up to 6A load. The LMZ31506 module can accept an input voltage rail between 3V
and 14.5V and deliver an adjustable and highly accurate output voltage as low as 0.6V. In
older documentation this regulator was known as the TI TPS84621.
The LMZ31710 SIMPLE SWITCHER® power module is a step-down DC-DC solution capable
of driving up to 10A load. The LMZ31710 module can accept an input voltage rail between
4.5V and 17V and deliver an adjustable and highly accurate output voltage as low as 0.6V.
These modules only requires two external resistors plus external capacitors to provide a
complete power solution. These modules offer the following protection features: thermal
shutdown, programmable input under-voltage lockout, output over-voltage protection,
short-circuits protection, output current limit, and each allows startup into a pre-biased
output.
The LMZ31710 sync input allows synchronization over the 200 kHz to 1,200 kHz switching
frequency range and up to six modules can be connected in parallel for higher load
currents.
ZC706 Evaluation Board User Guide
UG954 (v1.5) September 10, 2015
2
C addressable power-supply sequencer and monitor.
www.xilinx.com
Feature Descriptions
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