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High density dc-dc converter technology, 7,3 w/cm – Vicor Micro Family of DC-DC Converter User Manual

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Design Guide & Applications Manual

For Maxi, Mini, Micro Family DC-DC Converters and Configurable Power Supplies

Maxi, Mini, Micro Design Guide

Rev 4.9

vicorpower.com

Page 2 of 88

Apps. Eng. 800 927.9474

800 735.6200

1. High Density DC-DC Converter Technology

AC-DC Products

DC-DC Products

Universal
85 – 264 Vac

Autoranging
90 – 132 Vac
180 – 264 Vac

Autoranging
90 – 132 Vac
180 – 264 Vac

Autoranging
115 – 230 Vac
Input

Nominal Input
18 – 425 Vdc

28 Vdc, 48 Vdc,
270 Vdc

24 Vdc, 28 Vdc,
48 Vdc

Harmonic Attenuator Module
Unity Power Factor

Up to 675 W
per module

Filter / Autoranging Rectifier Module

Up to 1,000 W

Autoranging Rectifier Module

Up to 1,500 W

Front-end System
for EN Compliance
Up to 550 W

Transient Protection,
Inrush Current Limiting EMI Filter
Up to 25 A

Active EMI Filter
Up to 576 W @ 48 V

DC-DC Converter

Up to 600 W per module
1 – 54 Vdc

MINIHAM

FARM3

QPI

DC-DC Converter

Up to 300 W per module
1 – 48 Vdc

DC-DC Converter

Up to 150 W per module
1 – 48 Vdc

Single wire paralleling for
high power, fault tolerant arrays.

Output Ripple Attenuation Module
combines active and passive filtering.

QPO provides active filtering to
achieve differential noise attenuation.

QPO

DC-DC Products

High Boost

HAM

The Maxi, Mini, Micro Family of DC-DC converters are an
integral part of the company’s overall component power
solution strategy, (Figure 1–1), which includes advanced
factory and design automation. The modules are available
in an unlimited variety of standard versions, to the extent
that the line between custom and standard DC-DC
converter bricks becomes almost indistinguishable.

The design of the control, magnetic, switching, and
packaging elements of the module resulted in a
component with a power density of up to 120 W/in

3

(7,3 W/cm

3

) in three package sizes:

Maxi 4.6" x 2.2" x 0.5" (117 x 55,9 x 12,7 mm)
Mini 2.28" x 2.2" x 0.5"(57,9 x 55,9 x 12,7 mm)
Micro 2.28" x 1.45" x 0.5"(57,9 x 36,8 x 12,7 mm)

The modules have one-third the number of parts of their
predecessors.

While the natural by-products of this reduction in parts
count has improved reliability and lower cost, the extra
space also means that the bulk of the converter can now

be devoted almost exclusively to the power train (i.e., the
magnetic and switching elements at the core of the design).

Resistors can be used to trim the output voltage up or
down, if necessary. Six pin styles, three baseplate options,
and a variety of data collection and reporting options are
available. The devices have an operating temperature
range of –55°C to 100°C and come in five product
grades – E, C, T, H, and M.

Other specifications include a typical no-load to full-load
regulation of ±0.5%, a programmable output of 10% to
110%, conversion efficiencies of up to 92% depending
on the voltage combination and power level chosen, and
an input-to-output isolation test voltage of 3,000 Vrms
(4,242 Vdc). All models are parallelable with N+M fault
tolerance and current sharing. Paralleling architectures
feature DC or AC-coupled interface.

Figure 1–1 — Component power solutions with the Maxi, Mini, Micro Family

This manual is related to the following products: