MicroRAM – Output Ripple Attenuator Module

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Input Voltage:

3 – 30 Vdc

Output Current:

µRAM2(xxx) 20 A
µRAM3(xxx) 30 A

Efficiency:

Up to 98%

Dimensions

(quarter brick):

2.28" x 1.45" x 0.5"
(57,9 x 36,8 x 12,7 mm)

>40 dB ripple attenuation from 60 Hz to 1 MHz
Integrated ORing diode supports N+1 redundancy
Significantly improves load transient response
User selectable performance optimization
Combined active and passive filtering
20 and 30 Ampere ratings

The MicroRAM output ripple attenuation module combines both active and passive filtering to achieve greater than 40 dB of noise attenuation from 60 Hz to 1 MHz. The MicroRAM operates over a range of 3 to 30 Vdc, is available in either 20 or 30 A models and is compatible with most manufacturers switching converters including Vicor's VI-200 / VI-J00 and Maxi, Mini and Micro series DC-DC converters.

The MicroRAM's closed loop architecture greatly improves load transient response and with dual-mode control, provides precise point-of-load voltage regulation. The MicroRAM supports redundant and parallel operation with its integrated ORing diode function.

Vicor's experienced Application Engineers are here to help.

Contact Customer Service:

For help with product selection and availability, placing an order and order status:

800-735-6200

Email: custserv@vicorpower.com

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Applications Engineering Support »

MicroRAM Application Note »

MicroRAM Data Sheet »

Download Entire Manual

Maxi, Mini, Micro Design Guide and Applications Manual »

Download Individual Chapters

Accessory Modules

Recommended Soldering Methods

Lead Free Pins (RoHS) »
Tin Lead Pins »

Mounting Options

These calculator programs allow users to determine values that help with accessory
component selection for power system design.

Thermal Calculators
Thermal impedance calculator »

Thermal data and heat sink selection tool »
This is a downloadable Excel file.

Drawing Number		Description				RoHS		Technical Drawing
25004		Outline Drawing for MicroRAM						PDF \| DXF

CE Marked – Low Voltage Directive (2006/95/EC)

Click img. to enlarge	Description	P/N	RoHS	Technical Drawing
	Micro-sized Shield for Slotted Baseplate	30141		PDF
	Micro-sized Shield for Threaded or Through-Hole Baseplate	30143		PDF

Click img.
to enlarge

SurfMates – Surface-mount Sockets

All SurfMates are RoHS Compatible

Board Thickness

Mounting

Converter Pin Style*

Module Style

Input
P/N**

Output P/N**

5 In/Out Sets P/N

Technical Drawing

All

surface

View
SurfMate
Application »

Micro

22103

22104

16025

PDF | DXF

For PCB layouts see the mechanical drawings section.

Click img.
to enlarge

InMates – Through-hole

All InMates are RoHS Compatible

All sockets are supplied on InMate headers to assure proper alignment during installation.

Board Thickness (nominal)

Board Thickness
(min / max)

Mounting

Converter Pin Style*

Module Style

Input P/N**

Output P/N**

5 In/Out Sets P/N

Technical Drawing

0.063"

0.055" / 0.071"

inboard

View Inboard Mounting Options »

Micro

18376

18386

18370

PDF | DXF

0.063"

0.055" / 0.071"

onboard

Micro

18380

18392

18372

PDF | DXF

0.094"

0.084" / 0.104"

inboard

Micro

18377

18387

18371

PDF | DXF

0.094"

0.084" / 0.104"

onboard

View Onboard Mounting Options »

Micro

18381

18393

18373

PDF | DXF

0.125"

0.1125" / 0.1375"

onboard

Micro

21540

21545

21512

PDF | DXF

For PCB layouts see the mechanical drawings section.

   * F = Short Gold (RoHS), G = Long Gold (RoHS)
  ** For individual input / output purchases, a 35-piece minimum (and multiples) applies to Maxis / Minis and
        a 40-piece minimum (and multiples) for Micros.

Module Exchange Tools

Click img. to enlarge

Description

Module Style

P/N

Used to facilitate the proper extraction of Micro modules from InMate or SurfMate sockets.

Micro

22829

Heat sinks used with Vicor's Micro-size modules

Click img. to enlarge

Description

P/N

RoHS

Technical Drawing

0.40" longitudinal fins, threaded mounting*

32174

PDF | DXF

0.90" longitudinal fins, threaded mounting*

30190

PDF | DXF

0.40" longitudinal fins, thru-hole mounting

30719

PDF | DXF

0.90" longitudinal fins, thru-hole mounting

30183

PDF | DXF

0.40" transverse fins, threaded mounting*

32173

PDF | DXF

0.90" transverse fins, threaded mounting*

30270

PDF | DXF

0.40" transverse fins, thru-hole mounting

30722

PDF | DXF

0.90" transverse fins, thru-hole mounting

30725

PDF | DXF

* NOT for use with threaded baseplates

Heat Sink Thermal Data and Calculator »

Low-Profile Side-Fin Heat Sinks (Height only 0.125" above module baseplate)

Click img. to enlarge

Description

P/N

RoHS

Technical Drawing

0.55" Side-Fin Heat Sink for Micro-Sized Modules

30095

PDF

Heat Sink Thermal Data and Calculator »

ThermMate Thermal Pads (10 pieces per package)

Click img. to enlarge

Description

P/N

Thickness

RoHS

Technical Drawing

For use with Vicor Micro-size modules

20265

0.007"

PDF | DXF